./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/pthread/triangular_true-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2e94e6aa Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/pthread/triangular_true-unreach-call.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 58249a19aaa2ca34edeb532954b326c7f760e66f ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-2e94e6a [2018-12-31 17:28:40,202 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-31 17:28:40,206 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-31 17:28:40,223 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-31 17:28:40,224 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-31 17:28:40,226 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-31 17:28:40,227 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-31 17:28:40,230 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-31 17:28:40,232 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-31 17:28:40,235 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-31 17:28:40,238 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-31 17:28:40,239 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-31 17:28:40,241 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-31 17:28:40,242 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-31 17:28:40,245 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-31 17:28:40,246 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-31 17:28:40,248 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-31 17:28:40,252 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-31 17:28:40,258 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-31 17:28:40,260 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-31 17:28:40,261 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-31 17:28:40,262 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-31 17:28:40,270 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-31 17:28:40,270 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 17:28:40,270 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 17:28:40,271 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 17:28:40,272 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 17:28:40,273 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 17:28:40,273 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 17:28:40,274 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 17:28:40,275 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 17:28:40,275 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 17:28:40,275 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 17:28:40,275 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 17:28:40,276 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 17:28:40,277 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 17:28:40,277 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-31 17:28:40,292 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 17:28:40,292 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 17:28:40,294 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 17:28:40,294 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 17:28:40,294 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 17:28:40,294 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 17:28:40,294 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 17:28:40,295 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-31 17:28:40,295 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 17:28:40,295 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 17:28:40,295 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 17:28:40,295 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 17:28:40,295 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 17:28:40,296 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 17:28:40,296 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 17:28:40,296 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 17:28:40,296 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 17:28:40,296 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 17:28:40,297 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 17:28:40,297 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 17:28:40,297 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 17:28:40,297 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 17:28:40,297 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 17:28:40,297 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 17:28:40,298 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 17:28:40,298 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-31 17:28:40,298 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 17:28:40,298 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-31 17:28:40,298 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> 58249a19aaa2ca34edeb532954b326c7f760e66f [2018-12-31 17:28:40,355 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 17:28:40,373 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 17:28:40,380 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 17:28:40,382 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 17:28:40,382 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 17:28:40,383 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/pthread/triangular_true-unreach-call.i [2018-12-31 17:28:40,456 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b4f62f9d/c5fe9d8610574c8392022ab5cbe42bc8/FLAG16d21ba01 [2018-12-31 17:28:41,039 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 17:28:41,040 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/pthread/triangular_true-unreach-call.i [2018-12-31 17:28:41,055 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b4f62f9d/c5fe9d8610574c8392022ab5cbe42bc8/FLAG16d21ba01 [2018-12-31 17:28:41,267 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b4f62f9d/c5fe9d8610574c8392022ab5cbe42bc8 [2018-12-31 17:28:41,271 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 17:28:41,273 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 17:28:41,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 17:28:41,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 17:28:41,279 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 17:28:41,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 05:28:41" (1/1) ... [2018-12-31 17:28:41,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5399a91e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:28:41, skipping insertion in model container [2018-12-31 17:28:41,285 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 05:28:41" (1/1) ... [2018-12-31 17:28:41,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 17:28:41,339 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 17:28:41,744 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 17:28:41,757 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 17:28:41,913 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 17:28:41,983 INFO L195 MainTranslator]: Completed translation [2018-12-31 17:28:41,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:28:41 WrapperNode [2018-12-31 17:28:41,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 17:28:41,985 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 17:28:41,985 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 17:28:41,985 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 17:28:41,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:28:41" (1/1) ... [2018-12-31 17:28:42,013 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:28:41" (1/1) ... [2018-12-31 17:28:42,037 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 17:28:42,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 17:28:42,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 17:28:42,038 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 17:28:42,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:28:41" (1/1) ... [2018-12-31 17:28:42,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:28:41" (1/1) ... [2018-12-31 17:28:42,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:28:41" (1/1) ... [2018-12-31 17:28:42,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:28:41" (1/1) ... [2018-12-31 17:28:42,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:28:41" (1/1) ... [2018-12-31 17:28:42,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:28:41" (1/1) ... [2018-12-31 17:28:42,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:28:41" (1/1) ... [2018-12-31 17:28:42,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 17:28:42,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 17:28:42,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 17:28:42,069 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 17:28:42,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:28:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-12-31 17:28:42,133 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2018-12-31 17:28:42,133 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2018-12-31 17:28:42,133 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2018-12-31 17:28:42,133 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2018-12-31 17:28:42,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-31 17:28:42,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2018-12-31 17:28:42,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2018-12-31 17:28:42,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-31 17:28:42,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2018-12-31 17:28:42,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 17:28:42,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 17:28:42,136 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-12-31 17:28:42,596 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 17:28:42,597 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-12-31 17:28:42,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 05:28:42 BoogieIcfgContainer [2018-12-31 17:28:42,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 17:28:42,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 17:28:42,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 17:28:42,603 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 17:28:42,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 05:28:41" (1/3) ... [2018-12-31 17:28:42,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55c6bc8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 05:28:42, skipping insertion in model container [2018-12-31 17:28:42,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 05:28:41" (2/3) ... [2018-12-31 17:28:42,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55c6bc8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 05:28:42, skipping insertion in model container [2018-12-31 17:28:42,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 05:28:42" (3/3) ... [2018-12-31 17:28:42,607 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular_true-unreach-call.i [2018-12-31 17:28:42,640 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:28:42,640 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:28:42,640 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:28:42,641 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:28:42,641 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:28:42,642 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:28:42,642 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:28:42,643 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:28:42,643 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:28:42,643 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:28:42,643 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:28:42,644 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:28:42,644 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:28:42,644 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:28:42,644 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:28:42,644 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:28:42,645 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:28:42,645 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:28:42,645 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:28:42,645 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:28:42,645 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:28:42,646 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:28:42,646 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:28:42,646 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:28:42,646 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:28:42,646 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:28:42,647 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:28:42,647 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-31 17:28:42,676 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-12-31 17:28:42,677 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 17:28:42,685 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-31 17:28:42,703 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-31 17:28:42,729 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 17:28:42,730 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 17:28:42,730 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 17:28:42,730 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 17:28:42,730 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 17:28:42,730 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 17:28:42,730 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 17:28:42,730 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 17:28:42,731 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 17:28:42,741 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46places, 48 transitions [2018-12-31 17:28:42,814 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1012 states. [2018-12-31 17:28:42,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states. [2018-12-31 17:28:42,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-31 17:28:42,831 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:28:42,833 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:28:42,836 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:28:42,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:28:42,843 INFO L82 PathProgramCache]: Analyzing trace with hash 573491188, now seen corresponding path program 1 times [2018-12-31 17:28:42,846 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:28:42,846 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:28:42,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:42,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 17:28:42,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:28:43,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:43,214 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 17:28:43,214 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-31 17:28:43,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-31 17:28:43,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-31 17:28:43,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-31 17:28:43,239 INFO L87 Difference]: Start difference. First operand 1012 states. Second operand 5 states. [2018-12-31 17:28:43,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:28:43,609 INFO L93 Difference]: Finished difference Result 1411 states and 4051 transitions. [2018-12-31 17:28:43,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-31 17:28:43,611 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-12-31 17:28:43,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:28:43,630 INFO L225 Difference]: With dead ends: 1411 [2018-12-31 17:28:43,630 INFO L226 Difference]: Without dead ends: 322 [2018-12-31 17:28:43,632 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-12-31 17:28:43,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2018-12-31 17:28:43,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2018-12-31 17:28:43,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2018-12-31 17:28:43,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 820 transitions. [2018-12-31 17:28:43,705 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 820 transitions. Word has length 19 [2018-12-31 17:28:43,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:28:43,705 INFO L480 AbstractCegarLoop]: Abstraction has 322 states and 820 transitions. [2018-12-31 17:28:43,705 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-31 17:28:43,705 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 820 transitions. [2018-12-31 17:28:43,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-31 17:28:43,708 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:28:43,708 INFO L402 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] [2018-12-31 17:28:43,709 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:28:43,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:28:43,709 INFO L82 PathProgramCache]: Analyzing trace with hash -143811728, now seen corresponding path program 1 times [2018-12-31 17:28:43,709 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:28:43,709 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:28:43,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:43,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 17:28:43,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:28:43,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:43,891 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 17:28:43,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-31 17:28:43,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-31 17:28:43,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-31 17:28:43,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-31 17:28:43,894 INFO L87 Difference]: Start difference. First operand 322 states and 820 transitions. Second operand 5 states. [2018-12-31 17:28:43,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:28:43,975 INFO L93 Difference]: Finished difference Result 411 states and 998 transitions. [2018-12-31 17:28:43,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-31 17:28:43,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-12-31 17:28:43,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:28:43,979 INFO L225 Difference]: With dead ends: 411 [2018-12-31 17:28:43,981 INFO L226 Difference]: Without dead ends: 290 [2018-12-31 17:28:43,982 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-12-31 17:28:43,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-12-31 17:28:44,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2018-12-31 17:28:44,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-12-31 17:28:44,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 714 transitions. [2018-12-31 17:28:44,022 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 714 transitions. Word has length 22 [2018-12-31 17:28:44,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:28:44,022 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 714 transitions. [2018-12-31 17:28:44,022 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-31 17:28:44,022 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 714 transitions. [2018-12-31 17:28:44,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-31 17:28:44,024 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:28:44,024 INFO L402 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] [2018-12-31 17:28:44,024 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:28:44,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:28:44,025 INFO L82 PathProgramCache]: Analyzing trace with hash 28324926, now seen corresponding path program 1 times [2018-12-31 17:28:44,025 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:28:44,025 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:28:44,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:44,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 17:28:44,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:44,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:28:44,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:44,146 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 17:28:44,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-31 17:28:44,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-31 17:28:44,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-31 17:28:44,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-31 17:28:44,147 INFO L87 Difference]: Start difference. First operand 290 states and 714 transitions. Second operand 6 states. [2018-12-31 17:28:44,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:28:44,375 INFO L93 Difference]: Finished difference Result 437 states and 1057 transitions. [2018-12-31 17:28:44,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-31 17:28:44,375 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-12-31 17:28:44,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:28:44,378 INFO L225 Difference]: With dead ends: 437 [2018-12-31 17:28:44,378 INFO L226 Difference]: Without dead ends: 309 [2018-12-31 17:28:44,379 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-12-31 17:28:44,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-12-31 17:28:44,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 299. [2018-12-31 17:28:44,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2018-12-31 17:28:44,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 732 transitions. [2018-12-31 17:28:44,394 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 732 transitions. Word has length 25 [2018-12-31 17:28:44,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:28:44,394 INFO L480 AbstractCegarLoop]: Abstraction has 299 states and 732 transitions. [2018-12-31 17:28:44,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-31 17:28:44,395 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 732 transitions. [2018-12-31 17:28:44,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-31 17:28:44,396 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:28:44,396 INFO L402 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] [2018-12-31 17:28:44,397 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:28:44,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:28:44,397 INFO L82 PathProgramCache]: Analyzing trace with hash 19387626, now seen corresponding path program 2 times [2018-12-31 17:28:44,397 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:28:44,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:28:44,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:44,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 17:28:44,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:44,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:28:44,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:44,542 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 17:28:44,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-31 17:28:44,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-31 17:28:44,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-31 17:28:44,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-31 17:28:44,544 INFO L87 Difference]: Start difference. First operand 299 states and 732 transitions. Second operand 6 states. [2018-12-31 17:28:44,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:28:44,797 INFO L93 Difference]: Finished difference Result 456 states and 1095 transitions. [2018-12-31 17:28:44,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-31 17:28:44,798 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-12-31 17:28:44,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:28:44,801 INFO L225 Difference]: With dead ends: 456 [2018-12-31 17:28:44,801 INFO L226 Difference]: Without dead ends: 319 [2018-12-31 17:28:44,802 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-12-31 17:28:44,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-12-31 17:28:44,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-12-31 17:28:44,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-12-31 17:28:44,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 772 transitions. [2018-12-31 17:28:44,815 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 772 transitions. Word has length 25 [2018-12-31 17:28:44,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:28:44,815 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 772 transitions. [2018-12-31 17:28:44,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-31 17:28:44,815 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 772 transitions. [2018-12-31 17:28:44,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-31 17:28:44,818 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:28:44,818 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:28:44,819 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:28:44,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:28:44,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1592611961, now seen corresponding path program 1 times [2018-12-31 17:28:44,819 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:28:44,819 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:28:44,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:44,825 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 17:28:44,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:44,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:28:45,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:45,314 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 17:28:45,314 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 17:28:45,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 17:28:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:28:45,391 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 17:28:45,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:45,469 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 17:28:45,470 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-12-31 17:28:45,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-31 17:28:45,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-31 17:28:45,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-12-31 17:28:45,471 INFO L87 Difference]: Start difference. First operand 319 states and 772 transitions. Second operand 8 states. [2018-12-31 17:28:45,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:28:45,785 INFO L93 Difference]: Finished difference Result 466 states and 1115 transitions. [2018-12-31 17:28:45,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-31 17:28:45,786 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2018-12-31 17:28:45,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:28:45,790 INFO L225 Difference]: With dead ends: 466 [2018-12-31 17:28:45,791 INFO L226 Difference]: Without dead ends: 335 [2018-12-31 17:28:45,791 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2018-12-31 17:28:45,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-12-31 17:28:45,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 300. [2018-12-31 17:28:45,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2018-12-31 17:28:45,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 734 transitions. [2018-12-31 17:28:45,804 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 734 transitions. Word has length 29 [2018-12-31 17:28:45,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:28:45,804 INFO L480 AbstractCegarLoop]: Abstraction has 300 states and 734 transitions. [2018-12-31 17:28:45,805 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-31 17:28:45,805 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 734 transitions. [2018-12-31 17:28:45,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-12-31 17:28:45,807 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:28:45,808 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:28:45,808 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:28:45,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:28:45,808 INFO L82 PathProgramCache]: Analyzing trace with hash 2035666861, now seen corresponding path program 1 times [2018-12-31 17:28:45,808 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:28:45,810 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:28:45,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:45,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 17:28:45,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:45,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:28:46,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:46,139 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 17:28:46,140 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 17:28:46,152 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 17:28:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:28:46,188 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 17:28:46,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:46,356 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 17:28:46,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-12-31 17:28:46,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-31 17:28:46,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-31 17:28:46,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-12-31 17:28:46,357 INFO L87 Difference]: Start difference. First operand 300 states and 734 transitions. Second operand 8 states. [2018-12-31 17:28:46,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:28:46,538 INFO L93 Difference]: Finished difference Result 482 states and 1147 transitions. [2018-12-31 17:28:46,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-31 17:28:46,539 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2018-12-31 17:28:46,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:28:46,543 INFO L225 Difference]: With dead ends: 482 [2018-12-31 17:28:46,543 INFO L226 Difference]: Without dead ends: 351 [2018-12-31 17:28:46,543 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2018-12-31 17:28:46,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-12-31 17:28:46,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2018-12-31 17:28:46,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-12-31 17:28:46,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 836 transitions. [2018-12-31 17:28:46,556 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 836 transitions. Word has length 29 [2018-12-31 17:28:46,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:28:46,556 INFO L480 AbstractCegarLoop]: Abstraction has 351 states and 836 transitions. [2018-12-31 17:28:46,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-31 17:28:46,557 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 836 transitions. [2018-12-31 17:28:46,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-31 17:28:46,559 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:28:46,559 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:28:46,559 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:28:46,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:28:46,559 INFO L82 PathProgramCache]: Analyzing trace with hash -460714038, now seen corresponding path program 1 times [2018-12-31 17:28:46,560 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:28:46,560 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:28:46,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:46,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 17:28:46,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:28:46,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:46,803 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 17:28:46,803 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 17:28:46,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 17:28:46,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:28:46,877 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 17:28:46,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:46,978 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 17:28:46,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-12-31 17:28:46,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-31 17:28:46,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-31 17:28:46,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-12-31 17:28:46,980 INFO L87 Difference]: Start difference. First operand 351 states and 836 transitions. Second operand 9 states. [2018-12-31 17:28:47,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:28:47,307 INFO L93 Difference]: Finished difference Result 498 states and 1179 transitions. [2018-12-31 17:28:47,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-31 17:28:47,308 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2018-12-31 17:28:47,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:28:47,310 INFO L225 Difference]: With dead ends: 498 [2018-12-31 17:28:47,310 INFO L226 Difference]: Without dead ends: 367 [2018-12-31 17:28:47,311 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-12-31 17:28:47,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-12-31 17:28:47,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 316. [2018-12-31 17:28:47,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2018-12-31 17:28:47,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 766 transitions. [2018-12-31 17:28:47,321 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 766 transitions. Word has length 33 [2018-12-31 17:28:47,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:28:47,322 INFO L480 AbstractCegarLoop]: Abstraction has 316 states and 766 transitions. [2018-12-31 17:28:47,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-31 17:28:47,322 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 766 transitions. [2018-12-31 17:28:47,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-31 17:28:47,323 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:28:47,323 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:28:47,323 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:28:47,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:28:47,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1110322378, now seen corresponding path program 2 times [2018-12-31 17:28:47,324 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:28:47,324 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:28:47,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:47,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 17:28:47,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:28:47,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:47,446 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 17:28:47,446 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 17:28:47,458 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-31 17:28:47,504 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-31 17:28:47,504 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 17:28:47,507 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 17:28:47,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:47,684 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 17:28:47,684 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-12-31 17:28:47,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-31 17:28:47,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-31 17:28:47,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-12-31 17:28:47,685 INFO L87 Difference]: Start difference. First operand 316 states and 766 transitions. Second operand 9 states. [2018-12-31 17:28:47,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:28:47,867 INFO L93 Difference]: Finished difference Result 514 states and 1211 transitions. [2018-12-31 17:28:47,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-31 17:28:47,875 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2018-12-31 17:28:47,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:28:47,878 INFO L225 Difference]: With dead ends: 514 [2018-12-31 17:28:47,878 INFO L226 Difference]: Without dead ends: 383 [2018-12-31 17:28:47,878 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-12-31 17:28:47,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-12-31 17:28:47,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2018-12-31 17:28:47,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-12-31 17:28:47,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 900 transitions. [2018-12-31 17:28:47,894 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 900 transitions. Word has length 33 [2018-12-31 17:28:47,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:28:47,895 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 900 transitions. [2018-12-31 17:28:47,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-31 17:28:47,895 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 900 transitions. [2018-12-31 17:28:47,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-12-31 17:28:47,896 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:28:47,896 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:28:47,896 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:28:47,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:28:47,900 INFO L82 PathProgramCache]: Analyzing trace with hash 2061178471, now seen corresponding path program 3 times [2018-12-31 17:28:47,900 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:28:47,900 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:28:47,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:47,905 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 17:28:47,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:47,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:28:48,545 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:48,545 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 17:28:48,546 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 17:28:48,559 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-31 17:28:48,587 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-12-31 17:28:48,587 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 17:28:48,590 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 17:28:48,633 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:48,653 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 17:28:48,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2018-12-31 17:28:48,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-31 17:28:48,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-31 17:28:48,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-12-31 17:28:48,654 INFO L87 Difference]: Start difference. First operand 383 states and 900 transitions. Second operand 10 states. [2018-12-31 17:28:48,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:28:48,889 INFO L93 Difference]: Finished difference Result 530 states and 1243 transitions. [2018-12-31 17:28:48,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-31 17:28:48,895 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2018-12-31 17:28:48,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:28:48,898 INFO L225 Difference]: With dead ends: 530 [2018-12-31 17:28:48,899 INFO L226 Difference]: Without dead ends: 399 [2018-12-31 17:28:48,899 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2018-12-31 17:28:48,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-12-31 17:28:48,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 332. [2018-12-31 17:28:48,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2018-12-31 17:28:48,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 798 transitions. [2018-12-31 17:28:48,908 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 798 transitions. Word has length 37 [2018-12-31 17:28:48,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:28:48,910 INFO L480 AbstractCegarLoop]: Abstraction has 332 states and 798 transitions. [2018-12-31 17:28:48,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-31 17:28:48,910 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 798 transitions. [2018-12-31 17:28:48,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-12-31 17:28:48,912 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:28:48,912 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:28:48,912 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:28:48,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:28:48,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1649592435, now seen corresponding path program 4 times [2018-12-31 17:28:48,912 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:28:48,913 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:28:48,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:48,917 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 17:28:48,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:28:49,075 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:49,075 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 17:28:49,075 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 17:28:49,086 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-31 17:28:49,108 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-31 17:28:49,109 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 17:28:49,111 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 17:28:49,139 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:49,160 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 17:28:49,160 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2018-12-31 17:28:49,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-31 17:28:49,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-31 17:28:49,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-12-31 17:28:49,161 INFO L87 Difference]: Start difference. First operand 332 states and 798 transitions. Second operand 10 states. [2018-12-31 17:28:49,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:28:49,292 INFO L93 Difference]: Finished difference Result 546 states and 1275 transitions. [2018-12-31 17:28:49,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-31 17:28:49,293 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2018-12-31 17:28:49,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:28:49,296 INFO L225 Difference]: With dead ends: 546 [2018-12-31 17:28:49,296 INFO L226 Difference]: Without dead ends: 415 [2018-12-31 17:28:49,297 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2018-12-31 17:28:49,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2018-12-31 17:28:49,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2018-12-31 17:28:49,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2018-12-31 17:28:49,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 964 transitions. [2018-12-31 17:28:49,306 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 964 transitions. Word has length 37 [2018-12-31 17:28:49,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:28:49,306 INFO L480 AbstractCegarLoop]: Abstraction has 415 states and 964 transitions. [2018-12-31 17:28:49,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-31 17:28:49,307 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 964 transitions. [2018-12-31 17:28:49,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-12-31 17:28:49,308 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:28:49,308 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:28:49,308 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:28:49,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:28:49,308 INFO L82 PathProgramCache]: Analyzing trace with hash 2086800042, now seen corresponding path program 5 times [2018-12-31 17:28:49,308 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:28:49,309 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:28:49,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:49,310 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 17:28:49,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:28:49,449 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:49,450 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 17:28:49,450 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 17:28:49,463 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-31 17:28:49,481 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2018-12-31 17:28:49,481 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 17:28:49,484 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 17:28:49,516 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:49,535 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 17:28:49,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2018-12-31 17:28:49,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-31 17:28:49,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-31 17:28:49,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-12-31 17:28:49,537 INFO L87 Difference]: Start difference. First operand 415 states and 964 transitions. Second operand 11 states. [2018-12-31 17:28:49,680 WARN L181 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-12-31 17:28:49,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:28:49,862 INFO L93 Difference]: Finished difference Result 562 states and 1307 transitions. [2018-12-31 17:28:49,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-31 17:28:49,862 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2018-12-31 17:28:49,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:28:49,865 INFO L225 Difference]: With dead ends: 562 [2018-12-31 17:28:49,865 INFO L226 Difference]: Without dead ends: 431 [2018-12-31 17:28:49,866 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2018-12-31 17:28:49,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2018-12-31 17:28:49,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 348. [2018-12-31 17:28:49,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2018-12-31 17:28:49,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 830 transitions. [2018-12-31 17:28:49,875 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 830 transitions. Word has length 41 [2018-12-31 17:28:49,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:28:49,875 INFO L480 AbstractCegarLoop]: Abstraction has 348 states and 830 transitions. [2018-12-31 17:28:49,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-31 17:28:49,875 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 830 transitions. [2018-12-31 17:28:49,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-12-31 17:28:49,876 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:28:49,876 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:28:49,876 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:28:49,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:28:49,877 INFO L82 PathProgramCache]: Analyzing trace with hash 449750186, now seen corresponding path program 6 times [2018-12-31 17:28:49,877 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:28:49,877 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:28:49,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:49,879 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 17:28:49,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:28:50,160 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:50,161 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 17:28:50,161 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 17:28:50,175 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-31 17:28:50,206 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2018-12-31 17:28:50,206 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 17:28:50,211 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 17:28:50,239 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:50,265 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 17:28:50,265 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2018-12-31 17:28:50,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-31 17:28:50,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-31 17:28:50,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-12-31 17:28:50,266 INFO L87 Difference]: Start difference. First operand 348 states and 830 transitions. Second operand 11 states. [2018-12-31 17:28:50,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:28:50,463 INFO L93 Difference]: Finished difference Result 578 states and 1339 transitions. [2018-12-31 17:28:50,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-31 17:28:50,464 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2018-12-31 17:28:50,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:28:50,467 INFO L225 Difference]: With dead ends: 578 [2018-12-31 17:28:50,467 INFO L226 Difference]: Without dead ends: 447 [2018-12-31 17:28:50,468 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2018-12-31 17:28:50,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2018-12-31 17:28:50,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2018-12-31 17:28:50,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2018-12-31 17:28:50,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1028 transitions. [2018-12-31 17:28:50,479 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1028 transitions. Word has length 41 [2018-12-31 17:28:50,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:28:50,480 INFO L480 AbstractCegarLoop]: Abstraction has 447 states and 1028 transitions. [2018-12-31 17:28:50,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-31 17:28:50,480 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1028 transitions. [2018-12-31 17:28:50,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-12-31 17:28:50,481 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:28:50,481 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:28:50,481 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:28:50,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:28:50,482 INFO L82 PathProgramCache]: Analyzing trace with hash 511353159, now seen corresponding path program 7 times [2018-12-31 17:28:50,482 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:28:50,482 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:28:50,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:50,487 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 17:28:50,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:50,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:28:51,668 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:51,668 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 17:28:51,668 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 17:28:51,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 17:28:51,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:28:51,712 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 17:28:51,746 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:51,765 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 17:28:51,765 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2018-12-31 17:28:51,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-31 17:28:51,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-31 17:28:51,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-12-31 17:28:51,766 INFO L87 Difference]: Start difference. First operand 447 states and 1028 transitions. Second operand 12 states. [2018-12-31 17:28:52,217 WARN L181 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-12-31 17:28:52,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:28:52,315 INFO L93 Difference]: Finished difference Result 594 states and 1371 transitions. [2018-12-31 17:28:52,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-31 17:28:52,316 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2018-12-31 17:28:52,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:28:52,318 INFO L225 Difference]: With dead ends: 594 [2018-12-31 17:28:52,319 INFO L226 Difference]: Without dead ends: 463 [2018-12-31 17:28:52,319 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2018-12-31 17:28:52,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2018-12-31 17:28:52,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 364. [2018-12-31 17:28:52,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2018-12-31 17:28:52,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 862 transitions. [2018-12-31 17:28:52,331 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 862 transitions. Word has length 45 [2018-12-31 17:28:52,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:28:52,331 INFO L480 AbstractCegarLoop]: Abstraction has 364 states and 862 transitions. [2018-12-31 17:28:52,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-31 17:28:52,331 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 862 transitions. [2018-12-31 17:28:52,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-12-31 17:28:52,332 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:28:52,332 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:28:52,333 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:28:52,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:28:52,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1081163923, now seen corresponding path program 8 times [2018-12-31 17:28:52,335 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:28:52,335 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:28:52,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:52,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 17:28:52,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:28:52,490 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:52,490 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 17:28:52,490 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 17:28:52,503 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-31 17:28:52,556 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-31 17:28:52,556 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 17:28:52,560 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 17:28:52,595 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:52,624 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 17:28:52,625 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2018-12-31 17:28:52,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-31 17:28:52,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-31 17:28:52,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-12-31 17:28:52,626 INFO L87 Difference]: Start difference. First operand 364 states and 862 transitions. Second operand 12 states. [2018-12-31 17:28:52,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:28:52,862 INFO L93 Difference]: Finished difference Result 610 states and 1403 transitions. [2018-12-31 17:28:52,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-31 17:28:52,863 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2018-12-31 17:28:52,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:28:52,865 INFO L225 Difference]: With dead ends: 610 [2018-12-31 17:28:52,865 INFO L226 Difference]: Without dead ends: 479 [2018-12-31 17:28:52,866 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2018-12-31 17:28:52,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2018-12-31 17:28:52,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2018-12-31 17:28:52,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-12-31 17:28:52,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 1092 transitions. [2018-12-31 17:28:52,876 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 1092 transitions. Word has length 45 [2018-12-31 17:28:52,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:28:52,877 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 1092 transitions. [2018-12-31 17:28:52,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-31 17:28:52,877 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 1092 transitions. [2018-12-31 17:28:52,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-12-31 17:28:52,880 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:28:52,880 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:28:52,881 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:28:52,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:28:52,881 INFO L82 PathProgramCache]: Analyzing trace with hash -578738806, now seen corresponding path program 9 times [2018-12-31 17:28:52,881 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:28:52,881 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:28:52,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:52,885 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 17:28:52,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:52,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:28:53,117 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:53,118 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 17:28:53,118 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 17:28:53,129 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-31 17:28:53,153 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-12-31 17:28:53,154 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 17:28:53,158 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 17:28:53,339 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:53,368 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 17:28:53,368 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2018-12-31 17:28:53,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-31 17:28:53,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-31 17:28:53,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-12-31 17:28:53,369 INFO L87 Difference]: Start difference. First operand 479 states and 1092 transitions. Second operand 13 states. [2018-12-31 17:28:53,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:28:53,728 INFO L93 Difference]: Finished difference Result 626 states and 1435 transitions. [2018-12-31 17:28:53,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-31 17:28:53,730 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2018-12-31 17:28:53,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:28:53,732 INFO L225 Difference]: With dead ends: 626 [2018-12-31 17:28:53,732 INFO L226 Difference]: Without dead ends: 495 [2018-12-31 17:28:53,735 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2018-12-31 17:28:53,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2018-12-31 17:28:53,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 380. [2018-12-31 17:28:53,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2018-12-31 17:28:53,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 894 transitions. [2018-12-31 17:28:53,746 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 894 transitions. Word has length 49 [2018-12-31 17:28:53,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:28:53,746 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 894 transitions. [2018-12-31 17:28:53,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-31 17:28:53,748 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 894 transitions. [2018-12-31 17:28:53,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-12-31 17:28:53,749 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:28:53,749 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:28:53,750 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:28:53,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:28:53,750 INFO L82 PathProgramCache]: Analyzing trace with hash -555139958, now seen corresponding path program 10 times [2018-12-31 17:28:53,750 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:28:53,750 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:28:53,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:53,755 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 17:28:53,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:53,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:28:53,952 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:53,952 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 17:28:53,952 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 17:28:53,965 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-31 17:28:54,006 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-31 17:28:54,006 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 17:28:54,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 17:28:54,046 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:54,065 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 17:28:54,065 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2018-12-31 17:28:54,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-31 17:28:54,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-31 17:28:54,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-12-31 17:28:54,066 INFO L87 Difference]: Start difference. First operand 380 states and 894 transitions. Second operand 13 states. [2018-12-31 17:28:54,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:28:54,285 INFO L93 Difference]: Finished difference Result 642 states and 1467 transitions. [2018-12-31 17:28:54,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-31 17:28:54,287 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2018-12-31 17:28:54,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:28:54,290 INFO L225 Difference]: With dead ends: 642 [2018-12-31 17:28:54,291 INFO L226 Difference]: Without dead ends: 511 [2018-12-31 17:28:54,291 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2018-12-31 17:28:54,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2018-12-31 17:28:54,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 511. [2018-12-31 17:28:54,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2018-12-31 17:28:54,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 1156 transitions. [2018-12-31 17:28:54,300 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 1156 transitions. Word has length 49 [2018-12-31 17:28:54,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:28:54,300 INFO L480 AbstractCegarLoop]: Abstraction has 511 states and 1156 transitions. [2018-12-31 17:28:54,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-31 17:28:54,301 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 1156 transitions. [2018-12-31 17:28:54,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-12-31 17:28:54,303 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:28:54,303 INFO L402 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:28:54,304 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:28:54,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:28:54,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1389448231, now seen corresponding path program 11 times [2018-12-31 17:28:54,304 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:28:54,304 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:28:54,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:54,308 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 17:28:54,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:28:54,671 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:54,672 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 17:28:54,672 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 17:28:54,684 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-31 17:28:54,755 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2018-12-31 17:28:54,755 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 17:28:54,758 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 17:28:54,816 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:54,837 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 17:28:54,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2018-12-31 17:28:54,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-31 17:28:54,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-31 17:28:54,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-12-31 17:28:54,839 INFO L87 Difference]: Start difference. First operand 511 states and 1156 transitions. Second operand 14 states. [2018-12-31 17:28:55,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:28:55,072 INFO L93 Difference]: Finished difference Result 658 states and 1499 transitions. [2018-12-31 17:28:55,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-31 17:28:55,074 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2018-12-31 17:28:55,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:28:55,077 INFO L225 Difference]: With dead ends: 658 [2018-12-31 17:28:55,077 INFO L226 Difference]: Without dead ends: 527 [2018-12-31 17:28:55,077 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2018-12-31 17:28:55,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2018-12-31 17:28:55,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 396. [2018-12-31 17:28:55,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2018-12-31 17:28:55,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 926 transitions. [2018-12-31 17:28:55,086 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 926 transitions. Word has length 53 [2018-12-31 17:28:55,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:28:55,088 INFO L480 AbstractCegarLoop]: Abstraction has 396 states and 926 transitions. [2018-12-31 17:28:55,088 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-31 17:28:55,088 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 926 transitions. [2018-12-31 17:28:55,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-12-31 17:28:55,089 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:28:55,089 INFO L402 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:28:55,089 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:28:55,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:28:55,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1121609549, now seen corresponding path program 12 times [2018-12-31 17:28:55,092 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:28:55,092 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:28:55,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:55,096 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 17:28:55,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:28:55,254 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:55,254 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 17:28:55,254 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 17:28:55,267 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-31 17:28:55,293 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2018-12-31 17:28:55,293 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 17:28:55,295 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 17:28:55,352 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:55,382 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 17:28:55,383 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2018-12-31 17:28:55,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-31 17:28:55,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-31 17:28:55,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-12-31 17:28:55,385 INFO L87 Difference]: Start difference. First operand 396 states and 926 transitions. Second operand 14 states. [2018-12-31 17:28:55,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:28:55,763 INFO L93 Difference]: Finished difference Result 674 states and 1531 transitions. [2018-12-31 17:28:55,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-12-31 17:28:55,764 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2018-12-31 17:28:55,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:28:55,768 INFO L225 Difference]: With dead ends: 674 [2018-12-31 17:28:55,768 INFO L226 Difference]: Without dead ends: 543 [2018-12-31 17:28:55,768 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2018-12-31 17:28:55,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2018-12-31 17:28:55,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 543. [2018-12-31 17:28:55,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2018-12-31 17:28:55,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 1220 transitions. [2018-12-31 17:28:55,777 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 1220 transitions. Word has length 53 [2018-12-31 17:28:55,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:28:55,778 INFO L480 AbstractCegarLoop]: Abstraction has 543 states and 1220 transitions. [2018-12-31 17:28:55,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-31 17:28:55,778 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 1220 transitions. [2018-12-31 17:28:55,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-12-31 17:28:55,780 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:28:55,781 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:28:55,781 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:28:55,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:28:55,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1590124650, now seen corresponding path program 13 times [2018-12-31 17:28:55,781 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:28:55,781 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:28:55,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:55,785 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 17:28:55,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:28:56,538 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:56,538 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 17:28:56,538 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 17:28:56,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 17:28:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:28:56,590 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 17:28:56,656 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:56,680 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 17:28:56,680 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2018-12-31 17:28:56,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-12-31 17:28:56,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-12-31 17:28:56,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2018-12-31 17:28:56,681 INFO L87 Difference]: Start difference. First operand 543 states and 1220 transitions. Second operand 15 states. [2018-12-31 17:28:56,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:28:56,972 INFO L93 Difference]: Finished difference Result 690 states and 1563 transitions. [2018-12-31 17:28:56,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-12-31 17:28:56,973 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2018-12-31 17:28:56,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:28:56,978 INFO L225 Difference]: With dead ends: 690 [2018-12-31 17:28:56,978 INFO L226 Difference]: Without dead ends: 559 [2018-12-31 17:28:56,979 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=203, Invalid=447, Unknown=0, NotChecked=0, Total=650 [2018-12-31 17:28:56,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2018-12-31 17:28:56,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 412. [2018-12-31 17:28:56,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2018-12-31 17:28:56,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 958 transitions. [2018-12-31 17:28:56,989 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 958 transitions. Word has length 57 [2018-12-31 17:28:56,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:28:56,989 INFO L480 AbstractCegarLoop]: Abstraction has 412 states and 958 transitions. [2018-12-31 17:28:56,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-12-31 17:28:56,989 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 958 transitions. [2018-12-31 17:28:56,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-12-31 17:28:56,990 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:28:56,993 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:28:56,993 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:28:56,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:28:56,994 INFO L82 PathProgramCache]: Analyzing trace with hash 39711850, now seen corresponding path program 14 times [2018-12-31 17:28:56,994 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:28:56,994 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:28:56,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:56,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 17:28:56,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:28:57,157 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:57,157 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 17:28:57,158 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 17:28:57,170 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-31 17:28:57,194 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-31 17:28:57,195 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 17:28:57,197 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 17:28:57,256 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:57,285 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 17:28:57,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2018-12-31 17:28:57,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-12-31 17:28:57,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-12-31 17:28:57,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2018-12-31 17:28:57,287 INFO L87 Difference]: Start difference. First operand 412 states and 958 transitions. Second operand 15 states. [2018-12-31 17:28:57,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:28:57,614 INFO L93 Difference]: Finished difference Result 706 states and 1595 transitions. [2018-12-31 17:28:57,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-12-31 17:28:57,615 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2018-12-31 17:28:57,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:28:57,618 INFO L225 Difference]: With dead ends: 706 [2018-12-31 17:28:57,619 INFO L226 Difference]: Without dead ends: 575 [2018-12-31 17:28:57,619 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=454, Unknown=0, NotChecked=0, Total=650 [2018-12-31 17:28:57,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2018-12-31 17:28:57,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 575. [2018-12-31 17:28:57,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 575 states. [2018-12-31 17:28:57,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 1284 transitions. [2018-12-31 17:28:57,628 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 1284 transitions. Word has length 57 [2018-12-31 17:28:57,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:28:57,628 INFO L480 AbstractCegarLoop]: Abstraction has 575 states and 1284 transitions. [2018-12-31 17:28:57,629 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-12-31 17:28:57,629 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 1284 transitions. [2018-12-31 17:28:57,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-12-31 17:28:57,630 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:28:57,630 INFO L402 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:28:57,630 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:28:57,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:28:57,631 INFO L82 PathProgramCache]: Analyzing trace with hash -21031161, now seen corresponding path program 15 times [2018-12-31 17:28:57,631 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:28:57,631 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:28:57,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:57,634 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 17:28:57,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:28:58,119 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 60 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:58,120 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 17:28:58,120 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 17:28:58,139 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-31 17:28:58,184 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-12-31 17:28:58,184 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 17:28:58,186 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 17:28:58,208 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:58,238 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-31 17:28:58,238 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 15 [2018-12-31 17:28:58,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-12-31 17:28:58,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-12-31 17:28:58,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2018-12-31 17:28:58,239 INFO L87 Difference]: Start difference. First operand 575 states and 1284 transitions. Second operand 15 states. [2018-12-31 17:28:58,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:28:58,429 INFO L93 Difference]: Finished difference Result 1199 states and 2426 transitions. [2018-12-31 17:28:58,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-12-31 17:28:58,432 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 61 [2018-12-31 17:28:58,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:28:58,434 INFO L225 Difference]: With dead ends: 1199 [2018-12-31 17:28:58,434 INFO L226 Difference]: Without dead ends: 407 [2018-12-31 17:28:58,436 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=430, Unknown=0, NotChecked=0, Total=600 [2018-12-31 17:28:58,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2018-12-31 17:28:58,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2018-12-31 17:28:58,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-12-31 17:28:58,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 897 transitions. [2018-12-31 17:28:58,442 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 897 transitions. Word has length 61 [2018-12-31 17:28:58,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:28:58,442 INFO L480 AbstractCegarLoop]: Abstraction has 407 states and 897 transitions. [2018-12-31 17:28:58,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-12-31 17:28:58,442 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 897 transitions. [2018-12-31 17:28:58,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-12-31 17:28:58,443 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 17:28:58,444 INFO L402 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 17:28:58,444 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 17:28:58,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 17:28:58,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1418711251, now seen corresponding path program 16 times [2018-12-31 17:28:58,444 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 17:28:58,444 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 17:28:58,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:58,448 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 17:28:58,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 17:28:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 17:28:58,795 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 47 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:58,795 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 17:28:58,795 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 17:28:58,809 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-31 17:28:58,846 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-31 17:28:58,846 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 17:28:58,849 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 17:28:58,952 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 17:28:58,982 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-31 17:28:58,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 15 [2018-12-31 17:28:58,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-12-31 17:28:58,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-12-31 17:28:58,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2018-12-31 17:28:58,983 INFO L87 Difference]: Start difference. First operand 407 states and 897 transitions. Second operand 15 states. [2018-12-31 17:28:59,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 17:28:59,211 INFO L93 Difference]: Finished difference Result 563 states and 1005 transitions. [2018-12-31 17:28:59,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-12-31 17:28:59,215 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 61 [2018-12-31 17:28:59,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 17:28:59,215 INFO L225 Difference]: With dead ends: 563 [2018-12-31 17:28:59,215 INFO L226 Difference]: Without dead ends: 0 [2018-12-31 17:28:59,216 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=430, Unknown=0, NotChecked=0, Total=600 [2018-12-31 17:28:59,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-31 17:28:59,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-31 17:28:59,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-31 17:28:59,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-31 17:28:59,217 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2018-12-31 17:28:59,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 17:28:59,217 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-31 17:28:59,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-12-31 17:28:59,217 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-31 17:28:59,217 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-31 17:28:59,225 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-12-31 17:28:59,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.12 05:28:59 BasicIcfg [2018-12-31 17:28:59,227 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-31 17:28:59,228 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-31 17:28:59,228 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-31 17:28:59,228 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-31 17:28:59,229 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 05:28:42" (3/4) ... [2018-12-31 17:28:59,234 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-31 17:28:59,243 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2018-12-31 17:28:59,243 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2018-12-31 17:28:59,248 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-12-31 17:28:59,248 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-31 17:28:59,248 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-31 17:28:59,293 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-12-31 17:28:59,293 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-31 17:28:59,294 INFO L168 Benchmark]: Toolchain (without parser) took 18022.05 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 311.4 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -184.5 MB). Peak memory consumption was 126.9 MB. Max. memory is 11.5 GB. [2018-12-31 17:28:59,295 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 17:28:59,297 INFO L168 Benchmark]: CACSL2BoogieTranslator took 709.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -164.9 MB). Peak memory consumption was 30.3 MB. Max. memory is 11.5 GB. [2018-12-31 17:28:59,298 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.56 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. [2018-12-31 17:28:59,298 INFO L168 Benchmark]: Boogie Preprocessor took 30.28 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. [2018-12-31 17:28:59,298 INFO L168 Benchmark]: RCFGBuilder took 528.87 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: 25.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 11.5 GB. [2018-12-31 17:28:59,300 INFO L168 Benchmark]: TraceAbstraction took 16629.09 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 172.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -45.0 MB). Peak memory consumption was 127.5 MB. Max. memory is 11.5 GB. [2018-12-31 17:28:59,301 INFO L168 Benchmark]: Witness Printer took 65.60 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 17:28:59,306 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 709.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -164.9 MB). Peak memory consumption was 30.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 52.56 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 30.28 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 528.87 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: 25.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 16629.09 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 172.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -45.0 MB). Peak memory consumption was 127.5 MB. Max. memory is 11.5 GB. * Witness Printer took 65.60 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 688]: 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 5 procedures, 64 locations, 1 error locations. SAFE Result, 16.5s OverallTime, 22 OverallIterations, 6 TraceHistogramMax, 6.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1339 SDtfs, 4278 SDslu, 5456 SDs, 0 SdLazy, 1062 SolverSat, 471 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1172 GetRequests, 836 SyntacticMatches, 0 SemanticMatches, 336 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 940 ImplicationChecksByTransitivity, 9.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1012occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 22 MinimizatonAttempts, 738 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 8.0s InterpolantComputationTime, 1711 NumberOfCodeBlocks, 1710 NumberOfCodeBlocksAsserted, 67 NumberOfCheckSat, 1671 ConstructedInterpolants, 0 QuantifiedInterpolants, 220155 SizeOfPredicates, 174 NumberOfNonLiveVariables, 2156 ConjunctsInSsa, 227 ConjunctsInUnsatCore, 40 InterpolantComputations, 6 PerfectInterpolantSequences, 253/980 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...