./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/pthread/triangular_false-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 91b1670e 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_false-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 440b8f87b993409470c921154676895cb2b74b47 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 19:34:22,877 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 19:34:22,878 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 19:34:22,893 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 19:34:22,893 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 19:34:22,895 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 19:34:22,898 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 19:34:22,901 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 19:34:22,905 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 19:34:22,907 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 19:34:22,911 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 19:34:22,912 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 19:34:22,913 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 19:34:22,917 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 19:34:22,918 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 19:34:22,919 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 19:34:22,920 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 19:34:22,925 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 19:34:22,929 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 19:34:22,931 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 19:34:22,932 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 19:34:22,933 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 19:34:22,935 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 19:34:22,936 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 19:34:22,936 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 19:34:22,937 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 19:34:22,941 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 19:34:22,941 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 19:34:22,942 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 19:34:22,943 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 19:34:22,943 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 19:34:22,946 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 19:34:22,948 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 19:34:22,948 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 19:34:22,949 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 19:34:22,950 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 19:34:22,950 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 19:34:22,965 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 19:34:22,965 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 19:34:22,966 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 19:34:22,966 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 19:34:22,967 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 19:34:22,967 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 19:34:22,967 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 19:34:22,968 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 19:34:22,968 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 19:34:22,968 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 19:34:22,968 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 19:34:22,968 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 19:34:22,968 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 19:34:22,969 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 19:34:22,969 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 19:34:22,969 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 19:34:22,969 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 19:34:22,969 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 19:34:22,970 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 19:34:22,970 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 19:34:22,970 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 19:34:22,970 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 19:34:22,970 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 19:34:22,971 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 19:34:22,971 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 19:34:22,971 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 19:34:22,971 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 19:34:22,971 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 19:34:22,971 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 19:34:22,972 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 19:34:22,972 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 -> 440b8f87b993409470c921154676895cb2b74b47 [2018-11-28 19:34:23,006 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 19:34:23,025 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 19:34:23,029 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 19:34:23,031 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 19:34:23,032 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 19:34:23,033 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/pthread/triangular_false-unreach-call.i [2018-11-28 19:34:23,098 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d441ab5b3/c78c7e11ad10485283a375972c60b13c/FLAG7192e2145 [2018-11-28 19:34:23,596 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 19:34:23,598 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/pthread/triangular_false-unreach-call.i [2018-11-28 19:34:23,617 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d441ab5b3/c78c7e11ad10485283a375972c60b13c/FLAG7192e2145 [2018-11-28 19:34:23,887 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d441ab5b3/c78c7e11ad10485283a375972c60b13c [2018-11-28 19:34:23,891 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 19:34:23,892 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 19:34:23,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 19:34:23,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 19:34:23,900 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 19:34:23,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:34:23" (1/1) ... [2018-11-28 19:34:23,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29ca5205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:23, skipping insertion in model container [2018-11-28 19:34:23,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:34:23" (1/1) ... [2018-11-28 19:34:23,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 19:34:23,970 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 19:34:24,417 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 19:34:24,435 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 19:34:24,498 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 19:34:24,665 INFO L195 MainTranslator]: Completed translation [2018-11-28 19:34:24,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:24 WrapperNode [2018-11-28 19:34:24,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 19:34:24,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 19:34:24,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 19:34:24,666 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 19:34:24,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:24" (1/1) ... [2018-11-28 19:34:24,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:24" (1/1) ... [2018-11-28 19:34:24,727 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 19:34:24,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 19:34:24,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 19:34:24,728 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 19:34:24,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:24" (1/1) ... [2018-11-28 19:34:24,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:24" (1/1) ... [2018-11-28 19:34:24,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:24" (1/1) ... [2018-11-28 19:34:24,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:24" (1/1) ... [2018-11-28 19:34:24,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:24" (1/1) ... [2018-11-28 19:34:24,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:24" (1/1) ... [2018-11-28 19:34:24,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:24" (1/1) ... [2018-11-28 19:34:24,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 19:34:24,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 19:34:24,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 19:34:24,759 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 19:34:24,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:24" (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 [2018-11-28 19:34:24,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 19:34:24,819 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2018-11-28 19:34:24,819 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2018-11-28 19:34:24,819 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2018-11-28 19:34:24,819 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2018-11-28 19:34:24,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 19:34:24,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2018-11-28 19:34:24,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 19:34:24,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2018-11-28 19:34:24,820 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 19:34:24,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 19:34:24,821 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-11-28 19:34:25,264 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 19:34:25,265 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-28 19:34:25,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:34:25 BoogieIcfgContainer [2018-11-28 19:34:25,266 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 19:34:25,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 19:34:25,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 19:34:25,270 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 19:34:25,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:34:23" (1/3) ... [2018-11-28 19:34:25,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@90d1b51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:34:25, skipping insertion in model container [2018-11-28 19:34:25,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:34:24" (2/3) ... [2018-11-28 19:34:25,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@90d1b51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:34:25, skipping insertion in model container [2018-11-28 19:34:25,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:34:25" (3/3) ... [2018-11-28 19:34:25,274 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular_false-unreach-call.i [2018-11-28 19:34:25,307 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:34:25,307 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:34:25,308 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:34:25,308 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:34:25,308 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:34:25,309 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:34:25,309 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:34:25,310 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:34:25,310 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:34:25,310 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:34:25,310 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:34:25,311 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:34:25,311 WARN L317 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:34:25,311 WARN L317 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:34:25,312 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:34:25,312 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:34:25,312 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:34:25,312 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:34:25,312 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:34:25,313 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:34:25,313 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:34:25,313 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:34:25,313 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:34:25,314 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:34:25,314 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:34:25,314 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:34:25,314 WARN L317 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:34:25,315 WARN L317 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-28 19:34:25,350 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-11-28 19:34:25,351 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 19:34:25,361 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 19:34:25,378 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 19:34:25,400 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 19:34:25,401 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 19:34:25,401 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 19:34:25,401 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 19:34:25,401 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 19:34:25,401 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 19:34:25,401 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 19:34:25,401 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 19:34:25,402 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 19:34:25,410 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46places, 48 transitions [2018-11-28 19:34:25,472 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1012 states. [2018-11-28 19:34:25,475 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states. [2018-11-28 19:34:25,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 19:34:25,485 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:34:25,486 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 19:34:25,489 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:34:25,495 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:34:25,495 INFO L82 PathProgramCache]: Analyzing trace with hash 573491188, now seen corresponding path program 1 times [2018-11-28 19:34:25,497 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:34:25,498 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:34:25,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:25,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:34:25,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:34:25,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:34:25,953 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 19:34:25,953 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 19:34:25,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 19:34:25,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 19:34:25,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-28 19:34:25,977 INFO L87 Difference]: Start difference. First operand 1012 states. Second operand 5 states. [2018-11-28 19:34:26,178 WARN L180 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-28 19:34:26,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:34:26,378 INFO L93 Difference]: Finished difference Result 1411 states and 4051 transitions. [2018-11-28 19:34:26,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 19:34:26,381 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-11-28 19:34:26,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:34:26,402 INFO L225 Difference]: With dead ends: 1411 [2018-11-28 19:34:26,402 INFO L226 Difference]: Without dead ends: 322 [2018-11-28 19:34:26,404 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-28 19:34:26,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2018-11-28 19:34:26,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2018-11-28 19:34:26,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2018-11-28 19:34:26,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 820 transitions. [2018-11-28 19:34:26,484 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 820 transitions. Word has length 19 [2018-11-28 19:34:26,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:34:26,485 INFO L480 AbstractCegarLoop]: Abstraction has 322 states and 820 transitions. [2018-11-28 19:34:26,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 19:34:26,486 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 820 transitions. [2018-11-28 19:34:26,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 19:34:26,487 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:34:26,488 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] [2018-11-28 19:34:26,488 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:34:26,488 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:34:26,488 INFO L82 PathProgramCache]: Analyzing trace with hash -158111408, now seen corresponding path program 1 times [2018-11-28 19:34:26,489 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:34:26,489 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:34:26,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:26,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:34:26,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:34:26,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:34:26,845 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 19:34:26,846 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 19:34:26,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 19:34:26,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 19:34:26,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-28 19:34:26,848 INFO L87 Difference]: Start difference. First operand 322 states and 820 transitions. Second operand 5 states. [2018-11-28 19:34:26,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:34:26,955 INFO L93 Difference]: Finished difference Result 411 states and 998 transitions. [2018-11-28 19:34:26,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 19:34:26,955 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-11-28 19:34:26,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:34:26,959 INFO L225 Difference]: With dead ends: 411 [2018-11-28 19:34:26,959 INFO L226 Difference]: Without dead ends: 290 [2018-11-28 19:34:26,960 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-28 19:34:26,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2018-11-28 19:34:26,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2018-11-28 19:34:26,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2018-11-28 19:34:26,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 714 transitions. [2018-11-28 19:34:26,984 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 714 transitions. Word has length 22 [2018-11-28 19:34:26,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:34:26,984 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 714 transitions. [2018-11-28 19:34:26,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 19:34:26,985 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 714 transitions. [2018-11-28 19:34:26,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 19:34:26,987 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:34:26,987 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] [2018-11-28 19:34:26,988 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:34:26,988 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:34:26,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1832836244, now seen corresponding path program 1 times [2018-11-28 19:34:26,988 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:34:26,989 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:34:27,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:27,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:34:27,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:34:27,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:34:27,328 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 19:34:27,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 19:34:27,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 19:34:27,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 19:34:27,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-28 19:34:27,330 INFO L87 Difference]: Start difference. First operand 290 states and 714 transitions. Second operand 6 states. [2018-11-28 19:34:27,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:34:27,576 INFO L93 Difference]: Finished difference Result 437 states and 1057 transitions. [2018-11-28 19:34:27,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 19:34:27,578 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-11-28 19:34:27,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:34:27,581 INFO L225 Difference]: With dead ends: 437 [2018-11-28 19:34:27,582 INFO L226 Difference]: Without dead ends: 300 [2018-11-28 19:34:27,582 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-28 19:34:27,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2018-11-28 19:34:27,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 287. [2018-11-28 19:34:27,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2018-11-28 19:34:27,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 708 transitions. [2018-11-28 19:34:27,617 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 708 transitions. Word has length 25 [2018-11-28 19:34:27,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:34:27,618 INFO L480 AbstractCegarLoop]: Abstraction has 287 states and 708 transitions. [2018-11-28 19:34:27,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 19:34:27,618 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 708 transitions. [2018-11-28 19:34:27,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-28 19:34:27,623 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:34:27,623 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] [2018-11-28 19:34:27,623 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:34:27,624 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:34:27,624 INFO L82 PathProgramCache]: Analyzing trace with hash 28324926, now seen corresponding path program 2 times [2018-11-28 19:34:27,624 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:34:27,624 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:34:27,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:27,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:34:27,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:34:27,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:34:27,779 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 19:34:27,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 19:34:27,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 19:34:27,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 19:34:27,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-28 19:34:27,781 INFO L87 Difference]: Start difference. First operand 287 states and 708 transitions. Second operand 6 states. [2018-11-28 19:34:27,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:34:27,977 INFO L93 Difference]: Finished difference Result 447 states and 1077 transitions. [2018-11-28 19:34:27,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 19:34:27,981 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-11-28 19:34:27,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:34:27,985 INFO L225 Difference]: With dead ends: 447 [2018-11-28 19:34:27,985 INFO L226 Difference]: Without dead ends: 319 [2018-11-28 19:34:27,986 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 [2018-11-28 19:34:27,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2018-11-28 19:34:27,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2018-11-28 19:34:28,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2018-11-28 19:34:28,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 772 transitions. [2018-11-28 19:34:28,006 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 772 transitions. Word has length 25 [2018-11-28 19:34:28,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:34:28,006 INFO L480 AbstractCegarLoop]: Abstraction has 319 states and 772 transitions. [2018-11-28 19:34:28,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 19:34:28,006 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 772 transitions. [2018-11-28 19:34:28,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-28 19:34:28,013 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:34:28,013 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] [2018-11-28 19:34:28,013 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:34:28,013 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:34:28,013 INFO L82 PathProgramCache]: Analyzing trace with hash -390066897, now seen corresponding path program 1 times [2018-11-28 19:34:28,014 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:34:28,014 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:34:28,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:28,022 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 19:34:28,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:34:28,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:34:28,521 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 19:34:28,521 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 [2018-11-28 19:34:28,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:34:28,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:34:28,607 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:34:28,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:34:28,709 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 19:34:28,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-11-28 19:34:28,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 19:34:28,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 19:34:28,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-28 19:34:28,711 INFO L87 Difference]: Start difference. First operand 319 states and 772 transitions. Second operand 8 states. [2018-11-28 19:34:29,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:34:29,080 INFO L93 Difference]: Finished difference Result 466 states and 1115 transitions. [2018-11-28 19:34:29,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 19:34:29,081 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2018-11-28 19:34:29,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:34:29,085 INFO L225 Difference]: With dead ends: 466 [2018-11-28 19:34:29,085 INFO L226 Difference]: Without dead ends: 335 [2018-11-28 19:34:29,086 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2018-11-28 19:34:29,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-11-28 19:34:29,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 297. [2018-11-28 19:34:29,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-11-28 19:34:29,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 728 transitions. [2018-11-28 19:34:29,097 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 728 transitions. Word has length 29 [2018-11-28 19:34:29,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:34:29,098 INFO L480 AbstractCegarLoop]: Abstraction has 297 states and 728 transitions. [2018-11-28 19:34:29,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 19:34:29,098 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 728 transitions. [2018-11-28 19:34:29,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-28 19:34:29,099 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:34:29,100 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] [2018-11-28 19:34:29,100 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:34:29,100 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:34:29,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1592611961, now seen corresponding path program 1 times [2018-11-28 19:34:29,100 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:34:29,101 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:34:29,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:29,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:34:29,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:34:29,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:34:29,274 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 19:34:29,274 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 [2018-11-28 19:34:29,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:34:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:34:29,342 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:34:29,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:34:29,453 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 19:34:29,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-11-28 19:34:29,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 19:34:29,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 19:34:29,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-28 19:34:29,455 INFO L87 Difference]: Start difference. First operand 297 states and 728 transitions. Second operand 8 states. [2018-11-28 19:34:29,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:34:29,760 INFO L93 Difference]: Finished difference Result 482 states and 1147 transitions. [2018-11-28 19:34:29,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 19:34:29,762 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2018-11-28 19:34:29,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:34:29,765 INFO L225 Difference]: With dead ends: 482 [2018-11-28 19:34:29,765 INFO L226 Difference]: Without dead ends: 351 [2018-11-28 19:34:29,766 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2018-11-28 19:34:29,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2018-11-28 19:34:29,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2018-11-28 19:34:29,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2018-11-28 19:34:29,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 836 transitions. [2018-11-28 19:34:29,779 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 836 transitions. Word has length 29 [2018-11-28 19:34:29,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:34:29,779 INFO L480 AbstractCegarLoop]: Abstraction has 351 states and 836 transitions. [2018-11-28 19:34:29,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 19:34:29,781 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 836 transitions. [2018-11-28 19:34:29,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-28 19:34:29,782 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:34:29,783 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] [2018-11-28 19:34:29,784 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:34:29,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:34:29,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1331288396, now seen corresponding path program 1 times [2018-11-28 19:34:29,784 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:34:29,784 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:34:29,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:29,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:34:29,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:34:30,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:34:30,022 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 19:34:30,022 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 [2018-11-28 19:34:30,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:34:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:34:30,070 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:34:30,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:34:30,168 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 19:34:30,168 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-11-28 19:34:30,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 19:34:30,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 19:34:30,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-11-28 19:34:30,169 INFO L87 Difference]: Start difference. First operand 351 states and 836 transitions. Second operand 9 states. [2018-11-28 19:34:30,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:34:30,433 INFO L93 Difference]: Finished difference Result 498 states and 1179 transitions. [2018-11-28 19:34:30,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 19:34:30,434 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2018-11-28 19:34:30,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:34:30,436 INFO L225 Difference]: With dead ends: 498 [2018-11-28 19:34:30,436 INFO L226 Difference]: Without dead ends: 367 [2018-11-28 19:34:30,437 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-11-28 19:34:30,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2018-11-28 19:34:30,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 313. [2018-11-28 19:34:30,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2018-11-28 19:34:30,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 760 transitions. [2018-11-28 19:34:30,446 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 760 transitions. Word has length 33 [2018-11-28 19:34:30,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:34:30,446 INFO L480 AbstractCegarLoop]: Abstraction has 313 states and 760 transitions. [2018-11-28 19:34:30,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 19:34:30,446 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 760 transitions. [2018-11-28 19:34:30,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-28 19:34:30,447 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:34:30,447 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] [2018-11-28 19:34:30,448 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:34:30,448 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:34:30,448 INFO L82 PathProgramCache]: Analyzing trace with hash -460714038, now seen corresponding path program 2 times [2018-11-28 19:34:30,448 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:34:30,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:34:30,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:30,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:34:30,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:34:30,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:34:30,560 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 19:34:30,560 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 [2018-11-28 19:34:30,574 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 19:34:30,599 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 19:34:30,599 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 19:34:30,602 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:34:30,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:34:30,758 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 19:34:30,758 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-11-28 19:34:30,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 19:34:30,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 19:34:30,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-11-28 19:34:30,759 INFO L87 Difference]: Start difference. First operand 313 states and 760 transitions. Second operand 9 states. [2018-11-28 19:34:30,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:34:30,921 INFO L93 Difference]: Finished difference Result 514 states and 1211 transitions. [2018-11-28 19:34:30,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 19:34:30,922 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2018-11-28 19:34:30,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:34:30,924 INFO L225 Difference]: With dead ends: 514 [2018-11-28 19:34:30,924 INFO L226 Difference]: Without dead ends: 383 [2018-11-28 19:34:30,925 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-11-28 19:34:30,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2018-11-28 19:34:30,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2018-11-28 19:34:30,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-11-28 19:34:30,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 900 transitions. [2018-11-28 19:34:30,967 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 900 transitions. Word has length 33 [2018-11-28 19:34:30,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:34:30,967 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 900 transitions. [2018-11-28 19:34:30,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 19:34:30,967 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 900 transitions. [2018-11-28 19:34:30,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-28 19:34:30,974 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:34:30,975 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] [2018-11-28 19:34:30,975 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:34:30,975 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:34:30,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1672817905, now seen corresponding path program 3 times [2018-11-28 19:34:30,975 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:34:30,975 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:34:30,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:30,984 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 19:34:30,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:34:31,145 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:34:31,145 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 19:34:31,145 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 [2018-11-28 19:34:31,161 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 19:34:31,219 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-28 19:34:31,219 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 19:34:31,222 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:34:31,347 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:34:31,368 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 19:34:31,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2018-11-28 19:34:31,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 19:34:31,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 19:34:31,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-11-28 19:34:31,370 INFO L87 Difference]: Start difference. First operand 383 states and 900 transitions. Second operand 10 states. [2018-11-28 19:34:31,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:34:31,538 INFO L93 Difference]: Finished difference Result 530 states and 1243 transitions. [2018-11-28 19:34:31,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 19:34:31,541 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2018-11-28 19:34:31,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:34:31,545 INFO L225 Difference]: With dead ends: 530 [2018-11-28 19:34:31,545 INFO L226 Difference]: Without dead ends: 399 [2018-11-28 19:34:31,545 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2018-11-28 19:34:31,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2018-11-28 19:34:31,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 329. [2018-11-28 19:34:31,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-11-28 19:34:31,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 792 transitions. [2018-11-28 19:34:31,556 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 792 transitions. Word has length 37 [2018-11-28 19:34:31,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:34:31,557 INFO L480 AbstractCegarLoop]: Abstraction has 329 states and 792 transitions. [2018-11-28 19:34:31,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 19:34:31,557 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 792 transitions. [2018-11-28 19:34:31,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-28 19:34:31,558 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:34:31,558 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] [2018-11-28 19:34:31,558 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:34:31,558 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:34:31,559 INFO L82 PathProgramCache]: Analyzing trace with hash 2061178471, now seen corresponding path program 4 times [2018-11-28 19:34:31,561 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:34:31,561 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:34:31,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:31,563 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 19:34:31,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:34:31,786 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:34:31,786 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 19:34:31,787 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 [2018-11-28 19:34:31,799 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 19:34:31,818 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 19:34:31,818 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 19:34:31,820 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:34:31,884 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:34:31,911 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 19:34:31,912 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2018-11-28 19:34:31,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 19:34:31,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 19:34:31,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-11-28 19:34:31,913 INFO L87 Difference]: Start difference. First operand 329 states and 792 transitions. Second operand 10 states. [2018-11-28 19:34:32,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:34:32,071 INFO L93 Difference]: Finished difference Result 546 states and 1275 transitions. [2018-11-28 19:34:32,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 19:34:32,072 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2018-11-28 19:34:32,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:34:32,076 INFO L225 Difference]: With dead ends: 546 [2018-11-28 19:34:32,076 INFO L226 Difference]: Without dead ends: 415 [2018-11-28 19:34:32,076 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2018-11-28 19:34:32,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2018-11-28 19:34:32,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2018-11-28 19:34:32,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2018-11-28 19:34:32,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 964 transitions. [2018-11-28 19:34:32,086 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 964 transitions. Word has length 37 [2018-11-28 19:34:32,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:34:32,086 INFO L480 AbstractCegarLoop]: Abstraction has 415 states and 964 transitions. [2018-11-28 19:34:32,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 19:34:32,086 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 964 transitions. [2018-11-28 19:34:32,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-28 19:34:32,087 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:34:32,087 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] [2018-11-28 19:34:32,088 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:34:32,088 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:34:32,088 INFO L82 PathProgramCache]: Analyzing trace with hash 307146540, now seen corresponding path program 5 times [2018-11-28 19:34:32,088 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:34:32,088 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:34:32,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:32,091 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 19:34:32,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:34:32,250 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:34:32,250 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 19:34:32,250 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 [2018-11-28 19:34:32,266 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 19:34:32,286 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2018-11-28 19:34:32,286 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 19:34:32,289 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:34:32,329 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:34:32,348 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 19:34:32,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2018-11-28 19:34:32,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 19:34:32,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 19:34:32,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-11-28 19:34:32,350 INFO L87 Difference]: Start difference. First operand 415 states and 964 transitions. Second operand 11 states. [2018-11-28 19:34:32,499 WARN L180 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2018-11-28 19:34:32,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:34:32,694 INFO L93 Difference]: Finished difference Result 562 states and 1307 transitions. [2018-11-28 19:34:32,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 19:34:32,695 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2018-11-28 19:34:32,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:34:32,699 INFO L225 Difference]: With dead ends: 562 [2018-11-28 19:34:32,699 INFO L226 Difference]: Without dead ends: 431 [2018-11-28 19:34:32,700 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 [2018-11-28 19:34:32,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2018-11-28 19:34:32,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 345. [2018-11-28 19:34:32,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2018-11-28 19:34:32,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 824 transitions. [2018-11-28 19:34:32,709 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 824 transitions. Word has length 41 [2018-11-28 19:34:32,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:34:32,709 INFO L480 AbstractCegarLoop]: Abstraction has 345 states and 824 transitions. [2018-11-28 19:34:32,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 19:34:32,709 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 824 transitions. [2018-11-28 19:34:32,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-28 19:34:32,710 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:34:32,710 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] [2018-11-28 19:34:32,710 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:34:32,711 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:34:32,711 INFO L82 PathProgramCache]: Analyzing trace with hash 2086800042, now seen corresponding path program 6 times [2018-11-28 19:34:32,711 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:34:32,711 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:34:32,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:32,713 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 19:34:32,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:34:32,903 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:34:32,904 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 19:34:32,904 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 [2018-11-28 19:34:32,916 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 19:34:32,976 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2018-11-28 19:34:32,976 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 19:34:32,979 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:34:33,022 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:34:33,042 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 19:34:33,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2018-11-28 19:34:33,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 19:34:33,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 19:34:33,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-11-28 19:34:33,044 INFO L87 Difference]: Start difference. First operand 345 states and 824 transitions. Second operand 11 states. [2018-11-28 19:34:33,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:34:33,264 INFO L93 Difference]: Finished difference Result 578 states and 1339 transitions. [2018-11-28 19:34:33,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 19:34:33,266 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2018-11-28 19:34:33,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:34:33,270 INFO L225 Difference]: With dead ends: 578 [2018-11-28 19:34:33,270 INFO L226 Difference]: Without dead ends: 447 [2018-11-28 19:34:33,270 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2018-11-28 19:34:33,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2018-11-28 19:34:33,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2018-11-28 19:34:33,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 447 states. [2018-11-28 19:34:33,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1028 transitions. [2018-11-28 19:34:33,280 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1028 transitions. Word has length 41 [2018-11-28 19:34:33,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:34:33,280 INFO L480 AbstractCegarLoop]: Abstraction has 447 states and 1028 transitions. [2018-11-28 19:34:33,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 19:34:33,280 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1028 transitions. [2018-11-28 19:34:33,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-28 19:34:33,281 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:34:33,281 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] [2018-11-28 19:34:33,282 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:34:33,282 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:34:33,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1960724241, now seen corresponding path program 7 times [2018-11-28 19:34:33,282 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:34:33,282 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:34:33,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:33,286 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 19:34:33,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:33,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:34:33,423 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:34:33,424 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 19:34:33,424 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 [2018-11-28 19:34:33,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:34:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:34:33,460 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:34:33,542 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:34:33,561 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 19:34:33,561 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2018-11-28 19:34:33,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 19:34:33,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 19:34:33,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-11-28 19:34:33,562 INFO L87 Difference]: Start difference. First operand 447 states and 1028 transitions. Second operand 12 states. [2018-11-28 19:34:34,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:34:34,124 INFO L93 Difference]: Finished difference Result 594 states and 1371 transitions. [2018-11-28 19:34:34,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 19:34:34,125 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2018-11-28 19:34:34,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:34:34,129 INFO L225 Difference]: With dead ends: 594 [2018-11-28 19:34:34,130 INFO L226 Difference]: Without dead ends: 463 [2018-11-28 19:34:34,131 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2018-11-28 19:34:34,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2018-11-28 19:34:34,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 361. [2018-11-28 19:34:34,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2018-11-28 19:34:34,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 856 transitions. [2018-11-28 19:34:34,140 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 856 transitions. Word has length 45 [2018-11-28 19:34:34,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:34:34,141 INFO L480 AbstractCegarLoop]: Abstraction has 361 states and 856 transitions. [2018-11-28 19:34:34,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 19:34:34,141 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 856 transitions. [2018-11-28 19:34:34,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-28 19:34:34,142 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:34:34,142 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] [2018-11-28 19:34:34,142 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:34:34,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:34:34,143 INFO L82 PathProgramCache]: Analyzing trace with hash 511353159, now seen corresponding path program 8 times [2018-11-28 19:34:34,143 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:34:34,143 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:34:34,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:34,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 19:34:34,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:34:34,650 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:34:34,651 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 19:34:34,651 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 [2018-11-28 19:34:34,668 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 19:34:34,713 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 19:34:34,713 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 19:34:34,717 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:34:34,765 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:34:34,786 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 19:34:34,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2018-11-28 19:34:34,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 19:34:34,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 19:34:34,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-11-28 19:34:34,788 INFO L87 Difference]: Start difference. First operand 361 states and 856 transitions. Second operand 12 states. [2018-11-28 19:34:34,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:34:34,993 INFO L93 Difference]: Finished difference Result 610 states and 1403 transitions. [2018-11-28 19:34:34,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-28 19:34:34,995 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2018-11-28 19:34:34,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:34:34,998 INFO L225 Difference]: With dead ends: 610 [2018-11-28 19:34:34,998 INFO L226 Difference]: Without dead ends: 479 [2018-11-28 19:34:34,999 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2018-11-28 19:34:35,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2018-11-28 19:34:35,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2018-11-28 19:34:35,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2018-11-28 19:34:35,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 1092 transitions. [2018-11-28 19:34:35,010 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 1092 transitions. Word has length 45 [2018-11-28 19:34:35,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:34:35,011 INFO L480 AbstractCegarLoop]: Abstraction has 479 states and 1092 transitions. [2018-11-28 19:34:35,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 19:34:35,011 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 1092 transitions. [2018-11-28 19:34:35,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-11-28 19:34:35,012 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:34:35,012 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] [2018-11-28 19:34:35,013 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:34:35,013 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:34:35,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1300210956, now seen corresponding path program 9 times [2018-11-28 19:34:35,013 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:34:35,013 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:34:35,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:35,015 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 19:34:35,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:35,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:34:35,176 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:34:35,177 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 19:34:35,177 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 [2018-11-28 19:34:35,204 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 19:34:35,229 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-28 19:34:35,230 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 19:34:35,233 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:34:35,292 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:34:35,310 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 19:34:35,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2018-11-28 19:34:35,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-28 19:34:35,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-28 19:34:35,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-11-28 19:34:35,312 INFO L87 Difference]: Start difference. First operand 479 states and 1092 transitions. Second operand 13 states. [2018-11-28 19:34:35,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:34:35,713 INFO L93 Difference]: Finished difference Result 626 states and 1435 transitions. [2018-11-28 19:34:35,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-28 19:34:35,714 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2018-11-28 19:34:35,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:34:35,717 INFO L225 Difference]: With dead ends: 626 [2018-11-28 19:34:35,718 INFO L226 Difference]: Without dead ends: 495 [2018-11-28 19:34:35,718 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=140, Invalid=322, Unknown=0, NotChecked=0, Total=462 [2018-11-28 19:34:35,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2018-11-28 19:34:35,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 377. [2018-11-28 19:34:35,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2018-11-28 19:34:35,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 888 transitions. [2018-11-28 19:34:35,727 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 888 transitions. Word has length 49 [2018-11-28 19:34:35,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:34:35,727 INFO L480 AbstractCegarLoop]: Abstraction has 377 states and 888 transitions. [2018-11-28 19:34:35,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-28 19:34:35,727 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 888 transitions. [2018-11-28 19:34:35,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-11-28 19:34:35,728 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:34:35,728 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] [2018-11-28 19:34:35,728 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:34:35,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:34:35,729 INFO L82 PathProgramCache]: Analyzing trace with hash -578738806, now seen corresponding path program 10 times [2018-11-28 19:34:35,729 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:34:35,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:34:35,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:35,730 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 19:34:35,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:34:35,910 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:34:35,910 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 19:34:35,911 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 [2018-11-28 19:34:35,922 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 19:34:35,941 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 19:34:35,942 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 19:34:35,944 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:34:36,135 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:34:36,155 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 19:34:36,155 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2018-11-28 19:34:36,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-28 19:34:36,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-28 19:34:36,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-11-28 19:34:36,156 INFO L87 Difference]: Start difference. First operand 377 states and 888 transitions. Second operand 13 states. [2018-11-28 19:34:36,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:34:36,416 INFO L93 Difference]: Finished difference Result 642 states and 1467 transitions. [2018-11-28 19:34:36,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-28 19:34:36,417 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2018-11-28 19:34:36,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:34:36,422 INFO L225 Difference]: With dead ends: 642 [2018-11-28 19:34:36,422 INFO L226 Difference]: Without dead ends: 511 [2018-11-28 19:34:36,422 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2018-11-28 19:34:36,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2018-11-28 19:34:36,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 511. [2018-11-28 19:34:36,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2018-11-28 19:34:36,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 1156 transitions. [2018-11-28 19:34:36,432 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 1156 transitions. Word has length 49 [2018-11-28 19:34:36,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:34:36,432 INFO L480 AbstractCegarLoop]: Abstraction has 511 states and 1156 transitions. [2018-11-28 19:34:36,432 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-28 19:34:36,433 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 1156 transitions. [2018-11-28 19:34:36,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-11-28 19:34:36,434 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:34:36,434 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] [2018-11-28 19:34:36,434 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:34:36,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:34:36,434 INFO L82 PathProgramCache]: Analyzing trace with hash 925155023, now seen corresponding path program 11 times [2018-11-28 19:34:36,434 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:34:36,435 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:34:36,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:36,436 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 19:34:36,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:34:36,639 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:34:36,640 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 19:34:36,640 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 [2018-11-28 19:34:36,652 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 19:34:36,724 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2018-11-28 19:34:36,724 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 19:34:36,727 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:34:36,767 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:34:36,786 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 19:34:36,786 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2018-11-28 19:34:36,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-28 19:34:36,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-28 19:34:36,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-11-28 19:34:36,787 INFO L87 Difference]: Start difference. First operand 511 states and 1156 transitions. Second operand 14 states. [2018-11-28 19:34:37,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:34:37,013 INFO L93 Difference]: Finished difference Result 658 states and 1499 transitions. [2018-11-28 19:34:37,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-28 19:34:37,013 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2018-11-28 19:34:37,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:34:37,016 INFO L225 Difference]: With dead ends: 658 [2018-11-28 19:34:37,016 INFO L226 Difference]: Without dead ends: 527 [2018-11-28 19:34:37,017 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=154, Invalid=352, Unknown=0, NotChecked=0, Total=506 [2018-11-28 19:34:37,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2018-11-28 19:34:37,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 393. [2018-11-28 19:34:37,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2018-11-28 19:34:37,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 920 transitions. [2018-11-28 19:34:37,026 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 920 transitions. Word has length 53 [2018-11-28 19:34:37,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:34:37,026 INFO L480 AbstractCegarLoop]: Abstraction has 393 states and 920 transitions. [2018-11-28 19:34:37,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-28 19:34:37,026 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 920 transitions. [2018-11-28 19:34:37,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-11-28 19:34:37,027 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:34:37,027 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] [2018-11-28 19:34:37,028 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:34:37,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:34:37,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1389448231, now seen corresponding path program 12 times [2018-11-28 19:34:37,028 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:34:37,028 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:34:37,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:37,030 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 19:34:37,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:37,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 19:34:37,208 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:34:37,209 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 19:34:37,209 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 [2018-11-28 19:34:37,225 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 19:34:37,272 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2018-11-28 19:34:37,272 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 19:34:37,274 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 19:34:37,326 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 19:34:37,344 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 19:34:37,344 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2018-11-28 19:34:37,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-28 19:34:37,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-28 19:34:37,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2018-11-28 19:34:37,346 INFO L87 Difference]: Start difference. First operand 393 states and 920 transitions. Second operand 14 states. [2018-11-28 19:34:37,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 19:34:37,683 INFO L93 Difference]: Finished difference Result 674 states and 1531 transitions. [2018-11-28 19:34:37,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-28 19:34:37,690 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2018-11-28 19:34:37,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 19:34:37,692 INFO L225 Difference]: With dead ends: 674 [2018-11-28 19:34:37,692 INFO L226 Difference]: Without dead ends: 543 [2018-11-28 19:34:37,693 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2018-11-28 19:34:37,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2018-11-28 19:34:37,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 543. [2018-11-28 19:34:37,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2018-11-28 19:34:37,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 1220 transitions. [2018-11-28 19:34:37,703 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 1220 transitions. Word has length 53 [2018-11-28 19:34:37,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 19:34:37,703 INFO L480 AbstractCegarLoop]: Abstraction has 543 states and 1220 transitions. [2018-11-28 19:34:37,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-28 19:34:37,703 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 1220 transitions. [2018-11-28 19:34:37,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-28 19:34:37,704 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 19:34:37,705 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] [2018-11-28 19:34:37,707 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 19:34:37,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 19:34:37,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1832076564, now seen corresponding path program 13 times [2018-11-28 19:34:37,707 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 19:34:37,707 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 19:34:37,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:37,711 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 19:34:37,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 19:34:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 19:34:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 19:34:37,773 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 19:34:37,846 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-11-28 19:34:37,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:34:37 BasicIcfg [2018-11-28 19:34:37,849 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 19:34:37,849 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 19:34:37,849 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 19:34:37,849 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 19:34:37,852 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:34:25" (3/4) ... [2018-11-28 19:34:37,855 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 19:34:37,945 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 19:34:37,945 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 19:34:37,946 INFO L168 Benchmark]: Toolchain (without parser) took 14055.23 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 303.6 MB). Free memory was 952.7 MB in the beginning and 972.9 MB in the end (delta: -20.3 MB). Peak memory consumption was 283.3 MB. Max. memory is 11.5 GB. [2018-11-28 19:34:37,949 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 19:34:37,950 INFO L168 Benchmark]: CACSL2BoogieTranslator took 772.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -170.3 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. [2018-11-28 19:34:37,951 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.97 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-11-28 19:34:37,951 INFO L168 Benchmark]: Boogie Preprocessor took 29.13 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. [2018-11-28 19:34:37,953 INFO L168 Benchmark]: RCFGBuilder took 506.89 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: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 11.5 GB. [2018-11-28 19:34:37,954 INFO L168 Benchmark]: TraceAbstraction took 12581.96 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 167.8 MB). Free memory was 1.1 GB in the beginning and 981.7 MB in the end (delta: 109.0 MB). Peak memory consumption was 276.8 MB. Max. memory is 11.5 GB. [2018-11-28 19:34:37,954 INFO L168 Benchmark]: Witness Printer took 96.43 ms. Allocated memory is still 1.3 GB. Free memory was 981.7 MB in the beginning and 972.9 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 11.5 GB. [2018-11-28 19:34:37,965 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 772.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -170.3 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 60.97 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.13 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 506.89 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: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 12581.96 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 167.8 MB). Free memory was 1.1 GB in the beginning and 981.7 MB in the end (delta: 109.0 MB). Peak memory consumption was 276.8 MB. Max. memory is 11.5 GB. * Witness Printer took 96.43 ms. Allocated memory is still 1.3 GB. Free memory was 981.7 MB in the beginning and 972.9 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 688]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L660] -1 int i = 3, j = 6; VAL [i=3, j=6] [L678] -1 pthread_t id1, id2; VAL [i=3, j=6] [L679] FCALL, FORK -1 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arg={0:0}, i=3, j=6] [L662] 0 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L662] COND TRUE 0 k < 5 [L664] 0 i = j + 1 VAL [arg={0:0}, arg={0:0}, i=7, j=6, k=0] [L680] FCALL, FORK -1 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0] [L670] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=0] [L670] COND TRUE 1 k < 5 [L672] 1 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=0] [L670] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=0] [L662] 0 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L662] COND TRUE 0 k < 5 [L664] 0 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=1] [L670] COND TRUE 1 k < 5 [L672] 1 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=1] [L670] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=1] [L662] 0 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L662] COND TRUE 0 k < 5 [L664] 0 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2] [L670] COND TRUE 1 k < 5 [L672] 1 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=2] [L670] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=3] [L662] 0 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L662] COND TRUE 0 k < 5 [L664] 0 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3] [L670] COND TRUE 1 k < 5 [L672] 1 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=3] [L670] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=4] [L662] 0 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L662] COND TRUE 0 k < 5 [L664] 0 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L670] COND TRUE 1 k < 5 [L672] 1 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L682] -1 int condI = i >= (2*5 +6); [L685] -1 int condJ = j >= (2*5 +6); VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L687] COND TRUE -1 condI || condJ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L688] -1 __VERIFIER_error() VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 64 locations, 1 error locations. UNSAFE Result, 12.4s OverallTime, 19 OverallIterations, 5 TraceHistogramMax, 5.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 960 SDtfs, 2891 SDslu, 4119 SDs, 0 SdLazy, 849 SolverSat, 332 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 823 GetRequests, 582 SyntacticMatches, 0 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 6.8s 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: 0.3s AutomataMinimizationTime, 18 MinimizatonAttempts, 615 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 1296 NumberOfCodeBlocks, 1296 NumberOfCodeBlocksAsserted, 54 NumberOfCheckSat, 1207 ConstructedInterpolants, 0 QuantifiedInterpolants, 148799 SizeOfPredicates, 126 NumberOfNonLiveVariables, 1540 ConjunctsInSsa, 171 ConjunctsInUnsatCore, 32 InterpolantComputations, 4 PerfectInterpolantSequences, 0/464 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...