./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe027_pso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_9e533d80-1c77-4f10-90f6-9cef1caed983/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_9e533d80-1c77-4f10-90f6-9cef1caed983/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_9e533d80-1c77-4f10-90f6-9cef1caed983/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_9e533d80-1c77-4f10-90f6-9cef1caed983/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe027_pso.opt.i -s /tmp/vcloud-vcloud-master/worker/working_dir_9e533d80-1c77-4f10-90f6-9cef1caed983/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_9e533d80-1c77-4f10-90f6-9cef1caed983/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 4fb883ca4056dbe60b1f6789cf152033a9c2ff9c ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:26:50,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:26:50,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:26:50,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:26:50,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:26:50,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:26:50,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:26:50,154 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:26:50,155 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:26:50,156 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:26:50,157 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:26:50,158 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:26:50,158 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:26:50,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:26:50,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:26:50,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:26:50,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:26:50,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:26:50,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:26:50,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:26:50,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:26:50,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:26:50,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:26:50,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:26:50,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:26:50,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:26:50,169 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:26:50,170 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:26:50,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:26:50,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:26:50,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:26:50,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:26:50,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:26:50,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:26:50,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:26:50,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:26:50,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:26:50,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:26:50,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:26:50,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:26:50,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:26:50,181 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_9e533d80-1c77-4f10-90f6-9cef1caed983/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:26:50,194 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:26:50,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:26:50,195 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:26:50,195 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:26:50,195 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:26:50,196 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:26:50,196 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:26:50,196 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:26:50,196 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:26:50,196 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:26:50,196 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:26:50,196 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:26:50,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:26:50,197 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:26:50,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:26:50,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:26:50,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:26:50,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:26:50,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:26:50,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:26:50,198 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:26:50,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:26:50,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:26:50,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:26:50,199 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:26:50,199 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:26:50,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:26:50,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:26:50,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:26:50,200 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:26:50,200 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:26:50,200 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:26:50,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:26:50,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:26:50,200 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:26:50,200 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/working_dir_9e533d80-1c77-4f10-90f6-9cef1caed983/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 -> 4fb883ca4056dbe60b1f6789cf152033a9c2ff9c [2019-10-22 11:26:50,229 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:26:50,240 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:26:50,242 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:26:50,243 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:26:50,244 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:26:50,244 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_9e533d80-1c77-4f10-90f6-9cef1caed983/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe027_pso.opt.i [2019-10-22 11:26:50,286 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9e533d80-1c77-4f10-90f6-9cef1caed983/bin/utaipan/data/42ddd27a6/b124862e49404a2e8584ce7afeb9b23d/FLAGcfe4aff00 [2019-10-22 11:26:50,690 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:26:50,691 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_9e533d80-1c77-4f10-90f6-9cef1caed983/sv-benchmarks/c/pthread-wmm/safe027_pso.opt.i [2019-10-22 11:26:50,702 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9e533d80-1c77-4f10-90f6-9cef1caed983/bin/utaipan/data/42ddd27a6/b124862e49404a2e8584ce7afeb9b23d/FLAGcfe4aff00 [2019-10-22 11:26:50,712 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_9e533d80-1c77-4f10-90f6-9cef1caed983/bin/utaipan/data/42ddd27a6/b124862e49404a2e8584ce7afeb9b23d [2019-10-22 11:26:50,714 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:26:50,715 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:26:50,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:50,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:26:50,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:26:50,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:50" (1/1) ... [2019-10-22 11:26:50,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e4e9f6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:50, skipping insertion in model container [2019-10-22 11:26:50,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:50" (1/1) ... [2019-10-22 11:26:50,728 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:26:50,764 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:26:51,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:51,154 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:26:51,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:51,259 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:26:51,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:51 WrapperNode [2019-10-22 11:26:51,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:51,261 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:51,261 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:26:51,261 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:26:51,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:51" (1/1) ... [2019-10-22 11:26:51,281 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:51" (1/1) ... [2019-10-22 11:26:51,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:51,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:26:51,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:26:51,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:26:51,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:51" (1/1) ... [2019-10-22 11:26:51,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:51" (1/1) ... [2019-10-22 11:26:51,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:51" (1/1) ... [2019-10-22 11:26:51,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:51" (1/1) ... [2019-10-22 11:26:51,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:51" (1/1) ... [2019-10-22 11:26:51,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:51" (1/1) ... [2019-10-22 11:26:51,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:51" (1/1) ... [2019-10-22 11:26:51,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:26:51,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:26:51,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:26:51,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:26:51,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9e533d80-1c77-4f10-90f6-9cef1caed983/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 [2019-10-22 11:26:51,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:26:51,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-10-22 11:26:51,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:26:51,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:26:51,400 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-10-22 11:26:51,400 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-10-22 11:26:51,401 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-10-22 11:26:51,401 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-10-22 11:26:51,401 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-10-22 11:26:51,401 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-10-22 11:26:51,401 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-10-22 11:26:51,401 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-10-22 11:26:51,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-10-22 11:26:51,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:26:51,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:26:51,403 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-10-22 11:26:51,736 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:26:51,736 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 11:26:51,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:51 BoogieIcfgContainer [2019-10-22 11:26:51,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:26:51,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:26:51,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:26:51,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:26:51,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:26:50" (1/3) ... [2019-10-22 11:26:51,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c89765f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:51, skipping insertion in model container [2019-10-22 11:26:51,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:51" (2/3) ... [2019-10-22 11:26:51,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c89765f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:51, skipping insertion in model container [2019-10-22 11:26:51,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:51" (3/3) ... [2019-10-22 11:26:51,744 INFO L109 eAbstractionObserver]: Analyzing ICFG safe027_pso.opt.i [2019-10-22 11:26:51,773 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,774 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,774 WARN L315 ript$VariableManager]: TermVariabe Thread0_P0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,774 WARN L315 ript$VariableManager]: TermVariabe Thread0_P0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,774 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,774 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,774 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,775 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,775 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,775 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,776 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,776 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,776 WARN L315 ript$VariableManager]: TermVariabe Thread1_P1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,776 WARN L315 ript$VariableManager]: TermVariabe Thread1_P1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,776 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,776 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,777 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,777 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,777 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,777 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,777 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,778 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,778 WARN L315 ript$VariableManager]: TermVariabe Thread2_P2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,778 WARN L315 ript$VariableManager]: TermVariabe Thread2_P2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,778 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,778 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,778 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,779 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,779 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,779 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,779 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,779 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,779 WARN L315 ript$VariableManager]: TermVariabe Thread3_P3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,780 WARN L315 ript$VariableManager]: TermVariabe Thread3_P3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,780 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,780 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,780 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,780 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,780 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,781 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:26:51,790 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-10-22 11:26:51,790 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:26:51,797 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:26:51,807 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:26:51,823 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:26:51,823 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:26:51,823 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:26:51,823 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:26:51,823 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:26:51,823 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:26:51,823 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:26:51,823 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:26:51,831 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 68 places, 64 transitions [2019-10-22 11:26:52,882 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 13136 states. [2019-10-22 11:26:52,884 INFO L276 IsEmpty]: Start isEmpty. Operand 13136 states. [2019-10-22 11:26:52,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-22 11:26:52,916 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:52,918 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:52,920 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:52,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:52,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1293881623, now seen corresponding path program 1 times [2019-10-22 11:26:52,935 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:52,936 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349878305] [2019-10-22 11:26:52,936 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:52,936 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:52,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:53,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:53,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:53,302 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349878305] [2019-10-22 11:26:53,303 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:53,303 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:26:53,303 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131246466] [2019-10-22 11:26:53,307 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:26:53,309 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:53,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:26:53,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:26:53,326 INFO L87 Difference]: Start difference. First operand 13136 states. Second operand 4 states. [2019-10-22 11:26:53,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:53,669 INFO L93 Difference]: Finished difference Result 13742 states and 55793 transitions. [2019-10-22 11:26:53,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:26:53,671 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2019-10-22 11:26:53,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:53,723 INFO L225 Difference]: With dead ends: 13742 [2019-10-22 11:26:53,723 INFO L226 Difference]: Without dead ends: 5629 [2019-10-22 11:26:53,724 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:53,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5629 states. [2019-10-22 11:26:53,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5629 to 5629. [2019-10-22 11:26:53,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5629 states. [2019-10-22 11:26:53,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5629 states to 5629 states and 22352 transitions. [2019-10-22 11:26:53,993 INFO L78 Accepts]: Start accepts. Automaton has 5629 states and 22352 transitions. Word has length 35 [2019-10-22 11:26:53,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:53,995 INFO L462 AbstractCegarLoop]: Abstraction has 5629 states and 22352 transitions. [2019-10-22 11:26:53,995 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:26:53,995 INFO L276 IsEmpty]: Start isEmpty. Operand 5629 states and 22352 transitions. [2019-10-22 11:26:54,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-22 11:26:54,001 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:54,001 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:54,001 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:54,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:54,002 INFO L82 PathProgramCache]: Analyzing trace with hash -882813431, now seen corresponding path program 1 times [2019-10-22 11:26:54,002 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:54,002 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819429779] [2019-10-22 11:26:54,002 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:54,002 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:54,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:54,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:54,117 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819429779] [2019-10-22 11:26:54,118 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:54,118 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:26:54,118 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744164735] [2019-10-22 11:26:54,119 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:26:54,120 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:54,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:26:54,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:54,120 INFO L87 Difference]: Start difference. First operand 5629 states and 22352 transitions. Second operand 5 states. [2019-10-22 11:26:54,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:54,223 INFO L93 Difference]: Finished difference Result 6141 states and 23832 transitions. [2019-10-22 11:26:54,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:26:54,224 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2019-10-22 11:26:54,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:54,254 INFO L225 Difference]: With dead ends: 6141 [2019-10-22 11:26:54,255 INFO L226 Difference]: Without dead ends: 5517 [2019-10-22 11:26:54,255 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:26:54,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5517 states. [2019-10-22 11:26:54,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5517 to 5517. [2019-10-22 11:26:54,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5517 states. [2019-10-22 11:26:54,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5517 states to 5517 states and 21820 transitions. [2019-10-22 11:26:54,527 INFO L78 Accepts]: Start accepts. Automaton has 5517 states and 21820 transitions. Word has length 36 [2019-10-22 11:26:54,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:54,527 INFO L462 AbstractCegarLoop]: Abstraction has 5517 states and 21820 transitions. [2019-10-22 11:26:54,527 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:26:54,527 INFO L276 IsEmpty]: Start isEmpty. Operand 5517 states and 21820 transitions. [2019-10-22 11:26:54,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-22 11:26:54,533 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:54,533 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:54,534 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:54,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:54,534 INFO L82 PathProgramCache]: Analyzing trace with hash -912070317, now seen corresponding path program 1 times [2019-10-22 11:26:54,534 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:54,534 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283513521] [2019-10-22 11:26:54,535 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:54,535 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:54,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:54,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:54,653 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283513521] [2019-10-22 11:26:54,654 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:54,654 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 11:26:54,654 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299973341] [2019-10-22 11:26:54,654 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:26:54,654 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:54,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:26:54,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:26:54,655 INFO L87 Difference]: Start difference. First operand 5517 states and 21820 transitions. Second operand 6 states. [2019-10-22 11:26:54,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:54,816 INFO L93 Difference]: Finished difference Result 5453 states and 20828 transitions. [2019-10-22 11:26:54,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 11:26:54,816 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2019-10-22 11:26:54,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:54,856 INFO L225 Difference]: With dead ends: 5453 [2019-10-22 11:26:54,856 INFO L226 Difference]: Without dead ends: 4845 [2019-10-22 11:26:54,856 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-10-22 11:26:54,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4845 states. [2019-10-22 11:26:54,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4845 to 4845. [2019-10-22 11:26:54,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4845 states. [2019-10-22 11:26:55,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4845 states to 4845 states and 18796 transitions. [2019-10-22 11:26:55,005 INFO L78 Accepts]: Start accepts. Automaton has 4845 states and 18796 transitions. Word has length 37 [2019-10-22 11:26:55,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:55,005 INFO L462 AbstractCegarLoop]: Abstraction has 4845 states and 18796 transitions. [2019-10-22 11:26:55,005 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:26:55,005 INFO L276 IsEmpty]: Start isEmpty. Operand 4845 states and 18796 transitions. [2019-10-22 11:26:55,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 11:26:55,011 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:55,011 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:55,012 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:55,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:55,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1959602637, now seen corresponding path program 1 times [2019-10-22 11:26:55,012 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:55,013 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490755957] [2019-10-22 11:26:55,013 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:55,013 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:55,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:55,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:55,147 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490755957] [2019-10-22 11:26:55,148 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:55,148 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 11:26:55,148 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525467168] [2019-10-22 11:26:55,148 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 11:26:55,148 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:55,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 11:26:55,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:26:55,149 INFO L87 Difference]: Start difference. First operand 4845 states and 18796 transitions. Second operand 7 states. [2019-10-22 11:26:55,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:55,297 INFO L93 Difference]: Finished difference Result 3565 states and 13036 transitions. [2019-10-22 11:26:55,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 11:26:55,298 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2019-10-22 11:26:55,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:55,314 INFO L225 Difference]: With dead ends: 3565 [2019-10-22 11:26:55,315 INFO L226 Difference]: Without dead ends: 3053 [2019-10-22 11:26:55,315 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-10-22 11:26:55,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3053 states. [2019-10-22 11:26:55,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3053 to 3053. [2019-10-22 11:26:55,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3053 states. [2019-10-22 11:26:55,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3053 states to 3053 states and 11180 transitions. [2019-10-22 11:26:55,403 INFO L78 Accepts]: Start accepts. Automaton has 3053 states and 11180 transitions. Word has length 38 [2019-10-22 11:26:55,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:55,405 INFO L462 AbstractCegarLoop]: Abstraction has 3053 states and 11180 transitions. [2019-10-22 11:26:55,405 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 11:26:55,405 INFO L276 IsEmpty]: Start isEmpty. Operand 3053 states and 11180 transitions. [2019-10-22 11:26:55,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 11:26:55,412 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:55,412 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:55,412 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:55,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:55,412 INFO L82 PathProgramCache]: Analyzing trace with hash -894059009, now seen corresponding path program 1 times [2019-10-22 11:26:55,413 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:55,416 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38785599] [2019-10-22 11:26:55,417 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:55,418 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:55,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:55,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:55,561 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38785599] [2019-10-22 11:26:55,561 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:55,561 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 11:26:55,561 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862709548] [2019-10-22 11:26:55,562 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 11:26:55,562 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:55,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 11:26:55,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:26:55,562 INFO L87 Difference]: Start difference. First operand 3053 states and 11180 transitions. Second operand 7 states. [2019-10-22 11:26:55,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:55,739 INFO L93 Difference]: Finished difference Result 5197 states and 19084 transitions. [2019-10-22 11:26:55,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 11:26:55,744 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2019-10-22 11:26:55,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:55,760 INFO L225 Difference]: With dead ends: 5197 [2019-10-22 11:26:55,760 INFO L226 Difference]: Without dead ends: 3197 [2019-10-22 11:26:55,760 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-22 11:26:55,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3197 states. [2019-10-22 11:26:55,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3197 to 3053. [2019-10-22 11:26:55,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3053 states. [2019-10-22 11:26:55,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3053 states to 3053 states and 11144 transitions. [2019-10-22 11:26:55,891 INFO L78 Accepts]: Start accepts. Automaton has 3053 states and 11144 transitions. Word has length 39 [2019-10-22 11:26:55,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:55,891 INFO L462 AbstractCegarLoop]: Abstraction has 3053 states and 11144 transitions. [2019-10-22 11:26:55,891 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 11:26:55,891 INFO L276 IsEmpty]: Start isEmpty. Operand 3053 states and 11144 transitions. [2019-10-22 11:26:55,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 11:26:55,896 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:55,897 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:55,897 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:55,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:55,897 INFO L82 PathProgramCache]: Analyzing trace with hash -45436537, now seen corresponding path program 2 times [2019-10-22 11:26:55,897 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:55,898 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360344546] [2019-10-22 11:26:55,898 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:55,898 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:55,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:55,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:56,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:56,016 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360344546] [2019-10-22 11:26:56,016 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:56,017 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 11:26:56,017 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036672877] [2019-10-22 11:26:56,018 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:26:56,018 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:56,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:26:56,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:26:56,018 INFO L87 Difference]: Start difference. First operand 3053 states and 11144 transitions. Second operand 8 states. [2019-10-22 11:26:56,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:56,129 INFO L93 Difference]: Finished difference Result 4733 states and 17488 transitions. [2019-10-22 11:26:56,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 11:26:56,129 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2019-10-22 11:26:56,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:56,139 INFO L225 Difference]: With dead ends: 4733 [2019-10-22 11:26:56,140 INFO L226 Difference]: Without dead ends: 2457 [2019-10-22 11:26:56,140 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-22 11:26:56,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457 states. [2019-10-22 11:26:56,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457 to 2457. [2019-10-22 11:26:56,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2457 states. [2019-10-22 11:26:56,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2457 states to 2457 states and 9108 transitions. [2019-10-22 11:26:56,203 INFO L78 Accepts]: Start accepts. Automaton has 2457 states and 9108 transitions. Word has length 39 [2019-10-22 11:26:56,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:56,203 INFO L462 AbstractCegarLoop]: Abstraction has 2457 states and 9108 transitions. [2019-10-22 11:26:56,203 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:26:56,203 INFO L276 IsEmpty]: Start isEmpty. Operand 2457 states and 9108 transitions. [2019-10-22 11:26:56,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 11:26:56,207 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:56,207 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:56,208 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:56,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:56,209 INFO L82 PathProgramCache]: Analyzing trace with hash -845562247, now seen corresponding path program 3 times [2019-10-22 11:26:56,209 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:56,209 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002474266] [2019-10-22 11:26:56,209 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:56,209 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:56,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:56,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:56,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:56,333 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002474266] [2019-10-22 11:26:56,333 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:56,333 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 11:26:56,333 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540544689] [2019-10-22 11:26:56,334 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:26:56,334 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:56,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:26:56,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:26:56,334 INFO L87 Difference]: Start difference. First operand 2457 states and 9108 transitions. Second operand 8 states. [2019-10-22 11:26:56,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:56,448 INFO L93 Difference]: Finished difference Result 4137 states and 15404 transitions. [2019-10-22 11:26:56,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 11:26:56,448 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2019-10-22 11:26:56,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:56,458 INFO L225 Difference]: With dead ends: 4137 [2019-10-22 11:26:56,458 INFO L226 Difference]: Without dead ends: 2357 [2019-10-22 11:26:56,458 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-22 11:26:56,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2357 states. [2019-10-22 11:26:56,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2357 to 2357. [2019-10-22 11:26:56,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2357 states. [2019-10-22 11:26:56,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2357 states to 2357 states and 8780 transitions. [2019-10-22 11:26:56,513 INFO L78 Accepts]: Start accepts. Automaton has 2357 states and 8780 transitions. Word has length 39 [2019-10-22 11:26:56,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:56,513 INFO L462 AbstractCegarLoop]: Abstraction has 2357 states and 8780 transitions. [2019-10-22 11:26:56,513 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:26:56,514 INFO L276 IsEmpty]: Start isEmpty. Operand 2357 states and 8780 transitions. [2019-10-22 11:26:56,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 11:26:56,516 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:56,516 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:56,516 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:56,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:56,516 INFO L82 PathProgramCache]: Analyzing trace with hash -308069391, now seen corresponding path program 4 times [2019-10-22 11:26:56,517 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:56,517 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310282581] [2019-10-22 11:26:56,517 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:56,517 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:56,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:56,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:56,643 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310282581] [2019-10-22 11:26:56,643 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:56,644 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 11:26:56,644 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301275391] [2019-10-22 11:26:56,644 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 11:26:56,644 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:56,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 11:26:56,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:26:56,645 INFO L87 Difference]: Start difference. First operand 2357 states and 8780 transitions. Second operand 7 states. [2019-10-22 11:26:56,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:56,778 INFO L93 Difference]: Finished difference Result 3957 states and 14876 transitions. [2019-10-22 11:26:56,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 11:26:56,779 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2019-10-22 11:26:56,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:56,788 INFO L225 Difference]: With dead ends: 3957 [2019-10-22 11:26:56,788 INFO L226 Difference]: Without dead ends: 2277 [2019-10-22 11:26:56,788 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-10-22 11:26:56,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2277 states. [2019-10-22 11:26:56,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2277 to 2213. [2019-10-22 11:26:56,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2213 states. [2019-10-22 11:26:56,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2213 states to 2213 states and 8336 transitions. [2019-10-22 11:26:56,841 INFO L78 Accepts]: Start accepts. Automaton has 2213 states and 8336 transitions. Word has length 39 [2019-10-22 11:26:56,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:56,841 INFO L462 AbstractCegarLoop]: Abstraction has 2213 states and 8336 transitions. [2019-10-22 11:26:56,841 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 11:26:56,841 INFO L276 IsEmpty]: Start isEmpty. Operand 2213 states and 8336 transitions. [2019-10-22 11:26:56,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 11:26:56,843 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:56,843 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:56,843 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:56,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:56,844 INFO L82 PathProgramCache]: Analyzing trace with hash -2043714867, now seen corresponding path program 5 times [2019-10-22 11:26:56,844 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:56,844 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548758448] [2019-10-22 11:26:56,844 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:56,845 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:56,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:56,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:56,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:56,936 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548758448] [2019-10-22 11:26:56,936 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:56,936 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 11:26:56,936 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53086182] [2019-10-22 11:26:56,936 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 11:26:56,937 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:56,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 11:26:56,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:26:56,937 INFO L87 Difference]: Start difference. First operand 2213 states and 8336 transitions. Second operand 7 states. [2019-10-22 11:26:57,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:57,045 INFO L93 Difference]: Finished difference Result 1701 states and 6288 transitions. [2019-10-22 11:26:57,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 11:26:57,045 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2019-10-22 11:26:57,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:57,046 INFO L225 Difference]: With dead ends: 1701 [2019-10-22 11:26:57,046 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 11:26:57,046 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-10-22 11:26:57,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 11:26:57,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 11:26:57,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 11:26:57,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 11:26:57,046 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2019-10-22 11:26:57,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:57,047 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 11:26:57,047 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 11:26:57,047 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 11:26:57,047 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 11:26:57,050 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-10-22 11:26:57,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:26:57 BasicIcfg [2019-10-22 11:26:57,051 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:26:57,051 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:26:57,052 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:26:57,052 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:26:57,052 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:51" (3/4) ... [2019-10-22 11:26:57,055 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 11:26:57,062 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-10-22 11:26:57,066 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-10-22 11:26:57,066 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-10-22 11:26:57,066 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2019-10-22 11:26:57,070 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-10-22 11:26:57,070 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 11:26:57,115 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_9e533d80-1c77-4f10-90f6-9cef1caed983/bin/utaipan/witness.graphml [2019-10-22 11:26:57,117 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:26:57,119 INFO L168 Benchmark]: Toolchain (without parser) took 6403.83 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 224.9 MB). Free memory was 938.3 MB in the beginning and 836.9 MB in the end (delta: 101.4 MB). Peak memory consumption was 326.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:57,120 INFO L168 Benchmark]: CDTParser took 2.19 ms. Allocated memory is still 1.0 GB. Free memory is still 957.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:57,121 INFO L168 Benchmark]: CACSL2BoogieTranslator took 545.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 938.3 MB in the beginning and 1.1 GB in the end (delta: -173.0 MB). Peak memory consumption was 23.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:57,124 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.63 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:57,125 INFO L168 Benchmark]: Boogie Preprocessor took 22.49 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:57,125 INFO L168 Benchmark]: RCFGBuilder took 410.13 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: 29.3 MB). Peak memory consumption was 29.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:57,126 INFO L168 Benchmark]: TraceAbstraction took 5313.01 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 78.6 MB). Free memory was 1.1 GB in the beginning and 844.8 MB in the end (delta: 233.1 MB). Peak memory consumption was 311.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:57,126 INFO L168 Benchmark]: Witness Printer took 65.75 ms. Allocated memory is still 1.3 GB. Free memory was 844.8 MB in the beginning and 836.9 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:57,128 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.19 ms. Allocated memory is still 1.0 GB. Free memory is still 957.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 545.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 938.3 MB in the beginning and 1.1 GB in the end (delta: -173.0 MB). Peak memory consumption was 23.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 43.63 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.49 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 410.13 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: 29.3 MB). Peak memory consumption was 29.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5313.01 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 78.6 MB). Free memory was 1.1 GB in the beginning and 844.8 MB in the end (delta: 233.1 MB). Peak memory consumption was 311.7 MB. Max. memory is 11.5 GB. * Witness Printer took 65.75 ms. Allocated memory is still 1.3 GB. Free memory was 844.8 MB in the beginning and 836.9 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 88 locations, 1 error locations. Result: SAFE, OverallTime: 5.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 657 SDtfs, 1055 SDslu, 1895 SDs, 0 SdLazy, 236 SolverSat, 92 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13136occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 208 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 341 NumberOfCodeBlocks, 341 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 332 ConstructedInterpolants, 0 QuantifiedInterpolants, 45142 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...