./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe027_tso.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_c9565d02-dded-43bb-9547-15260acacaa0/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c9565d02-dded-43bb-9547-15260acacaa0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c9565d02-dded-43bb-9547-15260acacaa0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c9565d02-dded-43bb-9547-15260acacaa0/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe027_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/working_dir_c9565d02-dded-43bb-9547-15260acacaa0/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c9565d02-dded-43bb-9547-15260acacaa0/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5ca8413da6392c1ff9c33d3cc27f8a0af6ab2ead ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 08:55:22,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:55:22,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:55:22,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:55:22,224 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:55:22,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:55:22,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:55:22,228 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:55:22,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:55:22,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:55:22,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:55:22,235 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:55:22,236 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:55:22,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:55:22,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:55:22,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:55:22,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:55:22,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:55:22,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:55:22,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:55:22,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:55:22,251 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:55:22,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:55:22,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:55:22,254 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:55:22,254 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:55:22,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:55:22,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:55:22,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:55:22,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:55:22,262 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:55:22,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:55:22,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:55:22,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:55:22,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:55:22,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:55:22,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:55:22,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:55:22,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:55:22,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:55:22,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:55:22,267 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c9565d02-dded-43bb-9547-15260acacaa0/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:55:22,288 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:55:22,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:55:22,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:55:22,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:55:22,289 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:55:22,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:55:22,289 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:55:22,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:55:22,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:55:22,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:55:22,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:55:22,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:55:22,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:55:22,290 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:55:22,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:55:22,290 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:55:22,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:55:22,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:55:22,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:55:22,291 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:55:22,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:55:22,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:55:22,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:55:22,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:55:22,294 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:55:22,294 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:55:22,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:55:22,295 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:55:22,295 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_c9565d02-dded-43bb-9547-15260acacaa0/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ca8413da6392c1ff9c33d3cc27f8a0af6ab2ead [2019-10-22 08:55:22,330 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:55:22,341 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:55:22,344 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:55:22,345 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:55:22,345 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:55:22,346 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c9565d02-dded-43bb-9547-15260acacaa0/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe027_tso.opt.i [2019-10-22 08:55:22,396 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c9565d02-dded-43bb-9547-15260acacaa0/bin/uautomizer/data/3a6b6e6d8/acc8d8850c6d4daba0261f479d34fda3/FLAG872828677 [2019-10-22 08:55:22,872 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:55:22,872 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c9565d02-dded-43bb-9547-15260acacaa0/sv-benchmarks/c/pthread-wmm/safe027_tso.opt.i [2019-10-22 08:55:22,888 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c9565d02-dded-43bb-9547-15260acacaa0/bin/uautomizer/data/3a6b6e6d8/acc8d8850c6d4daba0261f479d34fda3/FLAG872828677 [2019-10-22 08:55:23,186 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c9565d02-dded-43bb-9547-15260acacaa0/bin/uautomizer/data/3a6b6e6d8/acc8d8850c6d4daba0261f479d34fda3 [2019-10-22 08:55:23,188 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:55:23,189 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:55:23,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:23,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:55:23,193 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:55:23,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:23" (1/1) ... [2019-10-22 08:55:23,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55007c4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:23, skipping insertion in model container [2019-10-22 08:55:23,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:23" (1/1) ... [2019-10-22 08:55:23,203 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:55:23,244 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:55:23,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:23,612 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:55:23,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:23,725 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:55:23,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:23 WrapperNode [2019-10-22 08:55:23,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:23,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:23,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:55:23,727 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:55:23,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:23" (1/1) ... [2019-10-22 08:55:23,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:23" (1/1) ... [2019-10-22 08:55:23,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:23,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:55:23,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:55:23,766 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:55:23,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:23" (1/1) ... [2019-10-22 08:55:23,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:23" (1/1) ... [2019-10-22 08:55:23,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:23" (1/1) ... [2019-10-22 08:55:23,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:23" (1/1) ... [2019-10-22 08:55:23,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:23" (1/1) ... [2019-10-22 08:55:23,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:23" (1/1) ... [2019-10-22 08:55:23,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:23" (1/1) ... [2019-10-22 08:55:23,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:55:23,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:55:23,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:55:23,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:55:23,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c9565d02-dded-43bb-9547-15260acacaa0/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:55:23,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:55:23,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-10-22 08:55:23,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:55:23,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:55:23,854 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-10-22 08:55:23,854 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-10-22 08:55:23,854 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-10-22 08:55:23,854 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-10-22 08:55:23,854 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-10-22 08:55:23,854 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-10-22 08:55:23,855 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-10-22 08:55:23,855 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-10-22 08:55:23,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-10-22 08:55:23,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:55:23,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:55:23,857 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 08:55:24,178 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:55:24,179 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 08:55:24,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:24 BoogieIcfgContainer [2019-10-22 08:55:24,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:55:24,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:55:24,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:55:24,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:55:24,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:55:23" (1/3) ... [2019-10-22 08:55:24,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fdd6152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:55:24, skipping insertion in model container [2019-10-22 08:55:24,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:23" (2/3) ... [2019-10-22 08:55:24,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fdd6152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:55:24, skipping insertion in model container [2019-10-22 08:55:24,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:24" (3/3) ... [2019-10-22 08:55:24,187 INFO L109 eAbstractionObserver]: Analyzing ICFG safe027_tso.opt.i [2019-10-22 08:55:24,219 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,220 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,220 WARN L315 ript$VariableManager]: TermVariabe Thread0_P0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,220 WARN L315 ript$VariableManager]: TermVariabe Thread0_P0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,220 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,220 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,221 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,221 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,221 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,221 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,221 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,222 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,222 WARN L315 ript$VariableManager]: TermVariabe Thread1_P1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,222 WARN L315 ript$VariableManager]: TermVariabe Thread1_P1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,222 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,222 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,222 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,223 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,223 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,223 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,223 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,224 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,224 WARN L315 ript$VariableManager]: TermVariabe Thread2_P2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,224 WARN L315 ript$VariableManager]: TermVariabe Thread2_P2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,224 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,224 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,224 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,225 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,225 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,225 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,225 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,225 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,226 WARN L315 ript$VariableManager]: TermVariabe Thread3_P3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,226 WARN L315 ript$VariableManager]: TermVariabe Thread3_P3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,226 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,226 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,226 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,226 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,227 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,227 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:24,238 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-10-22 08:55:24,239 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:55:24,246 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 08:55:24,257 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 08:55:24,276 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:55:24,276 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:55:24,276 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:55:24,276 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:55:24,276 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:55:24,277 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:55:24,277 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:55:24,277 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:55:24,286 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 68 places, 64 transitions [2019-10-22 08:55:25,455 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 13136 states. [2019-10-22 08:55:25,457 INFO L276 IsEmpty]: Start isEmpty. Operand 13136 states. [2019-10-22 08:55:25,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-22 08:55:25,489 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:25,490 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 08:55:25,500 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:25,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:25,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1293881623, now seen corresponding path program 1 times [2019-10-22 08:55:25,516 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:25,516 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768568304] [2019-10-22 08:55:25,517 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:25,517 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:25,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:25,853 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 08:55:25,854 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768568304] [2019-10-22 08:55:25,855 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:25,855 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:55:25,855 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398195558] [2019-10-22 08:55:25,859 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:55:25,859 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:25,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:55:25,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:55:25,872 INFO L87 Difference]: Start difference. First operand 13136 states. Second operand 4 states. [2019-10-22 08:55:26,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:26,140 INFO L93 Difference]: Finished difference Result 13742 states and 55793 transitions. [2019-10-22 08:55:26,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:55:26,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2019-10-22 08:55:26,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:26,213 INFO L225 Difference]: With dead ends: 13742 [2019-10-22 08:55:26,217 INFO L226 Difference]: Without dead ends: 5629 [2019-10-22 08:55:26,218 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 08:55:26,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5629 states. [2019-10-22 08:55:26,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5629 to 5629. [2019-10-22 08:55:26,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5629 states. [2019-10-22 08:55:26,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5629 states to 5629 states and 22352 transitions. [2019-10-22 08:55:26,551 INFO L78 Accepts]: Start accepts. Automaton has 5629 states and 22352 transitions. Word has length 35 [2019-10-22 08:55:26,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:26,553 INFO L462 AbstractCegarLoop]: Abstraction has 5629 states and 22352 transitions. [2019-10-22 08:55:26,553 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:55:26,554 INFO L276 IsEmpty]: Start isEmpty. Operand 5629 states and 22352 transitions. [2019-10-22 08:55:26,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-22 08:55:26,561 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:26,561 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 08:55:26,561 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:26,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:26,562 INFO L82 PathProgramCache]: Analyzing trace with hash -882813431, now seen corresponding path program 1 times [2019-10-22 08:55:26,562 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:26,562 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094941448] [2019-10-22 08:55:26,562 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:26,562 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:26,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:26,730 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 08:55:26,730 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094941448] [2019-10-22 08:55:26,730 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:26,731 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:55:26,731 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661159038] [2019-10-22 08:55:26,732 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:55:26,732 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:26,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:55:26,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:55:26,733 INFO L87 Difference]: Start difference. First operand 5629 states and 22352 transitions. Second operand 5 states. [2019-10-22 08:55:26,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:26,893 INFO L93 Difference]: Finished difference Result 6141 states and 23832 transitions. [2019-10-22 08:55:26,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:55:26,894 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2019-10-22 08:55:26,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:26,927 INFO L225 Difference]: With dead ends: 6141 [2019-10-22 08:55:26,928 INFO L226 Difference]: Without dead ends: 5517 [2019-10-22 08:55:26,929 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 08:55:26,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5517 states. [2019-10-22 08:55:27,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5517 to 5517. [2019-10-22 08:55:27,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5517 states. [2019-10-22 08:55:27,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5517 states to 5517 states and 21820 transitions. [2019-10-22 08:55:27,251 INFO L78 Accepts]: Start accepts. Automaton has 5517 states and 21820 transitions. Word has length 36 [2019-10-22 08:55:27,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:27,252 INFO L462 AbstractCegarLoop]: Abstraction has 5517 states and 21820 transitions. [2019-10-22 08:55:27,252 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:55:27,252 INFO L276 IsEmpty]: Start isEmpty. Operand 5517 states and 21820 transitions. [2019-10-22 08:55:27,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-22 08:55:27,259 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:27,259 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 08:55:27,260 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:27,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:27,260 INFO L82 PathProgramCache]: Analyzing trace with hash -912070317, now seen corresponding path program 1 times [2019-10-22 08:55:27,260 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:27,261 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124769484] [2019-10-22 08:55:27,261 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:27,261 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:27,261 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:27,379 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 08:55:27,379 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124769484] [2019-10-22 08:55:27,380 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:27,380 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 08:55:27,380 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110593031] [2019-10-22 08:55:27,380 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:55:27,381 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:27,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:55:27,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:55:27,381 INFO L87 Difference]: Start difference. First operand 5517 states and 21820 transitions. Second operand 6 states. [2019-10-22 08:55:27,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:27,551 INFO L93 Difference]: Finished difference Result 5453 states and 20828 transitions. [2019-10-22 08:55:27,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:55:27,552 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2019-10-22 08:55:27,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:27,593 INFO L225 Difference]: With dead ends: 5453 [2019-10-22 08:55:27,593 INFO L226 Difference]: Without dead ends: 4845 [2019-10-22 08:55:27,593 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 08:55:27,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4845 states. [2019-10-22 08:55:27,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4845 to 4845. [2019-10-22 08:55:27,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4845 states. [2019-10-22 08:55:27,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4845 states to 4845 states and 18796 transitions. [2019-10-22 08:55:27,741 INFO L78 Accepts]: Start accepts. Automaton has 4845 states and 18796 transitions. Word has length 37 [2019-10-22 08:55:27,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:27,741 INFO L462 AbstractCegarLoop]: Abstraction has 4845 states and 18796 transitions. [2019-10-22 08:55:27,742 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:55:27,742 INFO L276 IsEmpty]: Start isEmpty. Operand 4845 states and 18796 transitions. [2019-10-22 08:55:27,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 08:55:27,749 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:27,749 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 08:55:27,750 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:27,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:27,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1959602637, now seen corresponding path program 1 times [2019-10-22 08:55:27,751 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:27,751 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132861060] [2019-10-22 08:55:27,751 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:27,752 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:27,752 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:27,848 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 08:55:27,848 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132861060] [2019-10-22 08:55:27,849 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:27,849 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 08:55:27,849 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017520568] [2019-10-22 08:55:27,849 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:55:27,849 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:27,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:55:27,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:55:27,850 INFO L87 Difference]: Start difference. First operand 4845 states and 18796 transitions. Second operand 7 states. [2019-10-22 08:55:27,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:27,975 INFO L93 Difference]: Finished difference Result 3565 states and 13036 transitions. [2019-10-22 08:55:27,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:55:27,976 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2019-10-22 08:55:27,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:27,987 INFO L225 Difference]: With dead ends: 3565 [2019-10-22 08:55:27,988 INFO L226 Difference]: Without dead ends: 3053 [2019-10-22 08:55:27,988 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:55:28,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3053 states. [2019-10-22 08:55:28,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3053 to 3053. [2019-10-22 08:55:28,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3053 states. [2019-10-22 08:55:28,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3053 states to 3053 states and 11180 transitions. [2019-10-22 08:55:28,078 INFO L78 Accepts]: Start accepts. Automaton has 3053 states and 11180 transitions. Word has length 38 [2019-10-22 08:55:28,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:28,078 INFO L462 AbstractCegarLoop]: Abstraction has 3053 states and 11180 transitions. [2019-10-22 08:55:28,078 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:55:28,078 INFO L276 IsEmpty]: Start isEmpty. Operand 3053 states and 11180 transitions. [2019-10-22 08:55:28,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 08:55:28,084 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:28,084 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 08:55:28,084 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:28,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:28,084 INFO L82 PathProgramCache]: Analyzing trace with hash -894059009, now seen corresponding path program 1 times [2019-10-22 08:55:28,084 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:28,085 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033967868] [2019-10-22 08:55:28,085 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:28,085 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:28,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:28,248 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 08:55:28,249 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033967868] [2019-10-22 08:55:28,249 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:28,249 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 08:55:28,249 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491992792] [2019-10-22 08:55:28,250 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:55:28,250 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:28,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:55:28,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:55:28,250 INFO L87 Difference]: Start difference. First operand 3053 states and 11180 transitions. Second operand 7 states. [2019-10-22 08:55:28,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:28,464 INFO L93 Difference]: Finished difference Result 5197 states and 19084 transitions. [2019-10-22 08:55:28,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:55:28,465 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2019-10-22 08:55:28,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:28,480 INFO L225 Difference]: With dead ends: 5197 [2019-10-22 08:55:28,481 INFO L226 Difference]: Without dead ends: 3197 [2019-10-22 08:55:28,481 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 08:55:28,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3197 states. [2019-10-22 08:55:28,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3197 to 3053. [2019-10-22 08:55:28,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3053 states. [2019-10-22 08:55:28,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3053 states to 3053 states and 11144 transitions. [2019-10-22 08:55:28,632 INFO L78 Accepts]: Start accepts. Automaton has 3053 states and 11144 transitions. Word has length 39 [2019-10-22 08:55:28,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:28,632 INFO L462 AbstractCegarLoop]: Abstraction has 3053 states and 11144 transitions. [2019-10-22 08:55:28,632 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:55:28,633 INFO L276 IsEmpty]: Start isEmpty. Operand 3053 states and 11144 transitions. [2019-10-22 08:55:28,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 08:55:28,638 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:28,638 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 08:55:28,638 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:28,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:28,638 INFO L82 PathProgramCache]: Analyzing trace with hash -45436537, now seen corresponding path program 2 times [2019-10-22 08:55:28,638 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:28,639 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083689867] [2019-10-22 08:55:28,639 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:28,639 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:28,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:28,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:28,767 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 08:55:28,767 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083689867] [2019-10-22 08:55:28,767 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:28,768 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 08:55:28,768 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835693582] [2019-10-22 08:55:28,768 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:55:28,768 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:28,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:55:28,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:55:28,769 INFO L87 Difference]: Start difference. First operand 3053 states and 11144 transitions. Second operand 8 states. [2019-10-22 08:55:28,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:28,894 INFO L93 Difference]: Finished difference Result 4733 states and 17488 transitions. [2019-10-22 08:55:28,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:55:28,895 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2019-10-22 08:55:28,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:28,905 INFO L225 Difference]: With dead ends: 4733 [2019-10-22 08:55:28,905 INFO L226 Difference]: Without dead ends: 2457 [2019-10-22 08:55:28,905 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 08:55:28,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457 states. [2019-10-22 08:55:28,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457 to 2457. [2019-10-22 08:55:28,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2457 states. [2019-10-22 08:55:28,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2457 states to 2457 states and 9108 transitions. [2019-10-22 08:55:28,969 INFO L78 Accepts]: Start accepts. Automaton has 2457 states and 9108 transitions. Word has length 39 [2019-10-22 08:55:28,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:28,970 INFO L462 AbstractCegarLoop]: Abstraction has 2457 states and 9108 transitions. [2019-10-22 08:55:28,970 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:55:28,970 INFO L276 IsEmpty]: Start isEmpty. Operand 2457 states and 9108 transitions. [2019-10-22 08:55:28,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 08:55:28,973 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:28,974 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 08:55:28,974 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:28,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:28,974 INFO L82 PathProgramCache]: Analyzing trace with hash -845562247, now seen corresponding path program 3 times [2019-10-22 08:55:28,974 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:28,974 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440344117] [2019-10-22 08:55:28,975 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:28,975 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:28,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:28,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:29,122 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 08:55:29,122 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440344117] [2019-10-22 08:55:29,122 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:29,122 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 08:55:29,122 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145553509] [2019-10-22 08:55:29,123 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:55:29,123 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:29,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:55:29,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:55:29,124 INFO L87 Difference]: Start difference. First operand 2457 states and 9108 transitions. Second operand 8 states. [2019-10-22 08:55:29,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:29,257 INFO L93 Difference]: Finished difference Result 4137 states and 15404 transitions. [2019-10-22 08:55:29,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:55:29,258 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2019-10-22 08:55:29,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:29,269 INFO L225 Difference]: With dead ends: 4137 [2019-10-22 08:55:29,269 INFO L226 Difference]: Without dead ends: 2357 [2019-10-22 08:55:29,269 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 08:55:29,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2357 states. [2019-10-22 08:55:29,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2357 to 2357. [2019-10-22 08:55:29,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2357 states. [2019-10-22 08:55:29,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2357 states to 2357 states and 8780 transitions. [2019-10-22 08:55:29,330 INFO L78 Accepts]: Start accepts. Automaton has 2357 states and 8780 transitions. Word has length 39 [2019-10-22 08:55:29,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:29,330 INFO L462 AbstractCegarLoop]: Abstraction has 2357 states and 8780 transitions. [2019-10-22 08:55:29,331 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:55:29,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2357 states and 8780 transitions. [2019-10-22 08:55:29,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 08:55:29,334 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:29,334 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 08:55:29,335 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:29,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:29,335 INFO L82 PathProgramCache]: Analyzing trace with hash -308069391, now seen corresponding path program 4 times [2019-10-22 08:55:29,335 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:29,335 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106156118] [2019-10-22 08:55:29,335 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:29,335 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:29,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:29,468 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 08:55:29,468 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106156118] [2019-10-22 08:55:29,469 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:29,469 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 08:55:29,469 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900135369] [2019-10-22 08:55:29,469 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:55:29,469 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:29,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:55:29,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:55:29,470 INFO L87 Difference]: Start difference. First operand 2357 states and 8780 transitions. Second operand 7 states. [2019-10-22 08:55:29,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:29,627 INFO L93 Difference]: Finished difference Result 3957 states and 14876 transitions. [2019-10-22 08:55:29,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:55:29,631 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2019-10-22 08:55:29,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:29,641 INFO L225 Difference]: With dead ends: 3957 [2019-10-22 08:55:29,641 INFO L226 Difference]: Without dead ends: 2277 [2019-10-22 08:55:29,641 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 08:55:29,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2277 states. [2019-10-22 08:55:29,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2277 to 2213. [2019-10-22 08:55:29,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2213 states. [2019-10-22 08:55:29,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2213 states to 2213 states and 8336 transitions. [2019-10-22 08:55:29,702 INFO L78 Accepts]: Start accepts. Automaton has 2213 states and 8336 transitions. Word has length 39 [2019-10-22 08:55:29,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:29,702 INFO L462 AbstractCegarLoop]: Abstraction has 2213 states and 8336 transitions. [2019-10-22 08:55:29,704 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:55:29,705 INFO L276 IsEmpty]: Start isEmpty. Operand 2213 states and 8336 transitions. [2019-10-22 08:55:29,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 08:55:29,707 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:29,707 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 08:55:29,707 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:29,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:29,708 INFO L82 PathProgramCache]: Analyzing trace with hash -2043714867, now seen corresponding path program 5 times [2019-10-22 08:55:29,708 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:29,708 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141525040] [2019-10-22 08:55:29,708 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:29,708 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:29,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:29,825 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 08:55:29,825 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141525040] [2019-10-22 08:55:29,825 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:29,826 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 08:55:29,826 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841390405] [2019-10-22 08:55:29,826 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:55:29,826 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:29,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:55:29,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:55:29,827 INFO L87 Difference]: Start difference. First operand 2213 states and 8336 transitions. Second operand 7 states. [2019-10-22 08:55:29,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:29,950 INFO L93 Difference]: Finished difference Result 1701 states and 6288 transitions. [2019-10-22 08:55:29,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:55:29,950 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2019-10-22 08:55:29,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:29,950 INFO L225 Difference]: With dead ends: 1701 [2019-10-22 08:55:29,950 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 08:55:29,951 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 08:55:29,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 08:55:29,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 08:55:29,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 08:55:29,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:55:29,952 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2019-10-22 08:55:29,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:29,952 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:55:29,952 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:55:29,952 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:55:29,952 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 08:55:29,955 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-10-22 08:55:29,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:55:29 BasicIcfg [2019-10-22 08:55:29,957 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:55:29,958 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:55:29,958 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:55:29,958 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:55:29,958 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:24" (3/4) ... [2019-10-22 08:55:29,962 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 08:55:29,969 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-10-22 08:55:29,970 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-10-22 08:55:29,970 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-10-22 08:55:29,970 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2019-10-22 08:55:29,975 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-10-22 08:55:29,975 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 08:55:30,033 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c9565d02-dded-43bb-9547-15260acacaa0/bin/uautomizer/witness.graphml [2019-10-22 08:55:30,036 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:55:30,038 INFO L168 Benchmark]: Toolchain (without parser) took 6848.58 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 228.1 MB). Free memory was 944.7 MB in the beginning and 832.5 MB in the end (delta: 112.2 MB). Peak memory consumption was 340.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:30,038 INFO L168 Benchmark]: CDTParser took 0.18 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. [2019-10-22 08:55:30,047 INFO L168 Benchmark]: CACSL2BoogieTranslator took 536.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -164.2 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:30,048 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.79 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. [2019-10-22 08:55:30,048 INFO L168 Benchmark]: Boogie Preprocessor took 29.02 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. [2019-10-22 08:55:30,048 INFO L168 Benchmark]: RCFGBuilder took 385.53 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: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:30,049 INFO L168 Benchmark]: TraceAbstraction took 5776.51 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 85.5 MB). Free memory was 1.1 GB in the beginning and 834.8 MB in the end (delta: 239.6 MB). Peak memory consumption was 325.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:30,049 INFO L168 Benchmark]: Witness Printer took 78.29 ms. Allocated memory is still 1.3 GB. Free memory was 834.8 MB in the beginning and 832.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:30,055 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 536.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -164.2 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.79 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. * Boogie Preprocessor took 29.02 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. * RCFGBuilder took 385.53 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: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5776.51 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 85.5 MB). Free memory was 1.1 GB in the beginning and 834.8 MB in the end (delta: 239.6 MB). Peak memory consumption was 325.1 MB. Max. memory is 11.5 GB. * Witness Printer took 78.29 ms. Allocated memory is still 1.3 GB. Free memory was 834.8 MB in the beginning and 832.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 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: 5.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 657 SDtfs, 1055 SDslu, 1895 SDs, 0 SdLazy, 236 SolverSat, 92 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s 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: 1.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 208 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s 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...