./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/triangular-longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/triangular-longer-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e24917ef8695200a643e71e238ee3c2cc9fb2120 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 20:48:01,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 20:48:01,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 20:48:01,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 20:48:01,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 20:48:01,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 20:48:01,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 20:48:01,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 20:48:01,302 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 20:48:01,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 20:48:01,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 20:48:01,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 20:48:01,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 20:48:01,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 20:48:01,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 20:48:01,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 20:48:01,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 20:48:01,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 20:48:01,323 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 20:48:01,327 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 20:48:01,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 20:48:01,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 20:48:01,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 20:48:01,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 20:48:01,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 20:48:01,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 20:48:01,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 20:48:01,343 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 20:48:01,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 20:48:01,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 20:48:01,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 20:48:01,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 20:48:01,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 20:48:01,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 20:48:01,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 20:48:01,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 20:48:01,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 20:48:01,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 20:48:01,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 20:48:01,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 20:48:01,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 20:48:01,353 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 20:48:01,382 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 20:48:01,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 20:48:01,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 20:48:01,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 20:48:01,384 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 20:48:01,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 20:48:01,385 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 20:48:01,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 20:48:01,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 20:48:01,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 20:48:01,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 20:48:01,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 20:48:01,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 20:48:01,386 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 20:48:01,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 20:48:01,387 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 20:48:01,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 20:48:01,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 20:48:01,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 20:48:01,388 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 20:48:01,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 20:48:01,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 20:48:01,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 20:48:01,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 20:48:01,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 20:48:01,389 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 20:48:01,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 20:48:01,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 20:48:01,390 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e24917ef8695200a643e71e238ee3c2cc9fb2120 [2019-11-15 20:48:01,439 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 20:48:01,457 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 20:48:01,462 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 20:48:01,464 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 20:48:01,464 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 20:48:01,466 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer/../../sv-benchmarks/c/pthread/triangular-longer-1.i [2019-11-15 20:48:01,539 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer/data/7cc696be9/f416d8613da648b781c6fe1a1af0ebce/FLAG160e64691 [2019-11-15 20:48:02,100 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 20:48:02,101 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/sv-benchmarks/c/pthread/triangular-longer-1.i [2019-11-15 20:48:02,115 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer/data/7cc696be9/f416d8613da648b781c6fe1a1af0ebce/FLAG160e64691 [2019-11-15 20:48:02,365 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer/data/7cc696be9/f416d8613da648b781c6fe1a1af0ebce [2019-11-15 20:48:02,367 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 20:48:02,369 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 20:48:02,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 20:48:02,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 20:48:02,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 20:48:02,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:48:02" (1/1) ... [2019-11-15 20:48:02,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74cf10ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:48:02, skipping insertion in model container [2019-11-15 20:48:02,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:48:02" (1/1) ... [2019-11-15 20:48:02,386 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 20:48:02,447 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 20:48:02,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:48:02,913 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 20:48:02,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:48:03,094 INFO L192 MainTranslator]: Completed translation [2019-11-15 20:48:03,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:48:03 WrapperNode [2019-11-15 20:48:03,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 20:48:03,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 20:48:03,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 20:48:03,097 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 20:48:03,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:48:03" (1/1) ... [2019-11-15 20:48:03,143 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:48:03" (1/1) ... [2019-11-15 20:48:03,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 20:48:03,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 20:48:03,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 20:48:03,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 20:48:03,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:48:03" (1/1) ... [2019-11-15 20:48:03,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:48:03" (1/1) ... [2019-11-15 20:48:03,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:48:03" (1/1) ... [2019-11-15 20:48:03,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:48:03" (1/1) ... [2019-11-15 20:48:03,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:48:03" (1/1) ... [2019-11-15 20:48:03,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:48:03" (1/1) ... [2019-11-15 20:48:03,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:48:03" (1/1) ... [2019-11-15 20:48:03,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 20:48:03,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 20:48:03,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 20:48:03,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 20:48:03,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:48:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 20:48:03,298 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2019-11-15 20:48:03,298 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2019-11-15 20:48:03,298 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2019-11-15 20:48:03,299 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2019-11-15 20:48:03,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 20:48:03,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-15 20:48:03,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 20:48:03,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 20:48:03,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-15 20:48:03,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 20:48:03,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 20:48:03,302 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-15 20:48:03,735 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 20:48:03,735 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-15 20:48:03,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:48:03 BoogieIcfgContainer [2019-11-15 20:48:03,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 20:48:03,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 20:48:03,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 20:48:03,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 20:48:03,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 08:48:02" (1/3) ... [2019-11-15 20:48:03,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd438f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:48:03, skipping insertion in model container [2019-11-15 20:48:03,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:48:03" (2/3) ... [2019-11-15 20:48:03,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd438f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:48:03, skipping insertion in model container [2019-11-15 20:48:03,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:48:03" (3/3) ... [2019-11-15 20:48:03,747 INFO L109 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2019-11-15 20:48:03,797 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:48:03,797 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:48:03,797 WARN L315 ript$VariableManager]: TermVariabe Thread1_t1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:48:03,798 WARN L315 ript$VariableManager]: TermVariabe Thread1_t1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:48:03,798 WARN L315 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:48:03,799 WARN L315 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:48:03,799 WARN L315 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:48:03,799 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:48:03,799 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:48:03,800 WARN L315 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:48:03,800 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:48:03,801 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:48:03,801 WARN L315 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:48:03,801 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:48:03,802 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:48:03,802 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:48:03,802 WARN L315 ript$VariableManager]: TermVariabe Thread0_t2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:48:03,802 WARN L315 ript$VariableManager]: TermVariabe Thread0_t2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:48:03,803 WARN L315 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:48:03,803 WARN L315 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:48:03,803 WARN L315 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:48:03,804 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:48:03,804 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:48:03,804 WARN L315 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:48:03,805 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:48:03,805 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:48:03,806 WARN L315 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:48:03,806 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-15 20:48:03,828 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-15 20:48:03,829 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 20:48:03,838 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 20:48:03,853 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 20:48:03,879 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 20:48:03,880 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 20:48:03,880 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 20:48:03,880 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 20:48:03,880 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 20:48:03,881 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 20:48:03,881 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 20:48:03,881 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 20:48:03,895 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 48 transitions [2019-11-15 20:48:03,971 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1012 states. [2019-11-15 20:48:03,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states. [2019-11-15 20:48:03,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-15 20:48:03,989 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:48:03,991 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:48:03,994 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:48:04,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:48:04,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1918718107, now seen corresponding path program 1 times [2019-11-15 20:48:04,011 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:48:04,012 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944977339] [2019-11-15 20:48:04,012 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:04,012 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:04,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:48:04,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:48:04,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:04,476 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944977339] [2019-11-15 20:48:04,477 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:48:04,478 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 20:48:04,478 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701058034] [2019-11-15 20:48:04,483 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 20:48:04,483 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:48:04,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 20:48:04,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 20:48:04,504 INFO L87 Difference]: Start difference. First operand 1012 states. Second operand 5 states. [2019-11-15 20:48:04,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:48:04,771 INFO L93 Difference]: Finished difference Result 1777 states and 5125 transitions. [2019-11-15 20:48:04,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 20:48:04,773 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-11-15 20:48:04,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:48:04,812 INFO L225 Difference]: With dead ends: 1777 [2019-11-15 20:48:04,812 INFO L226 Difference]: Without dead ends: 499 [2019-11-15 20:48:04,815 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-15 20:48:04,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2019-11-15 20:48:04,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 387. [2019-11-15 20:48:04,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2019-11-15 20:48:04,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 992 transitions. [2019-11-15 20:48:04,928 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 992 transitions. Word has length 19 [2019-11-15 20:48:04,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:48:04,929 INFO L462 AbstractCegarLoop]: Abstraction has 387 states and 992 transitions. [2019-11-15 20:48:04,929 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 20:48:04,930 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 992 transitions. [2019-11-15 20:48:04,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-15 20:48:04,932 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:48:04,932 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:48:04,932 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:48:04,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:48:04,933 INFO L82 PathProgramCache]: Analyzing trace with hash 146645817, now seen corresponding path program 1 times [2019-11-15 20:48:04,933 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:48:04,934 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487888112] [2019-11-15 20:48:04,934 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:04,934 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:04,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:48:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:48:05,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:05,133 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487888112] [2019-11-15 20:48:05,133 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:48:05,133 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 20:48:05,134 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454551106] [2019-11-15 20:48:05,135 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 20:48:05,135 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:48:05,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 20:48:05,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 20:48:05,136 INFO L87 Difference]: Start difference. First operand 387 states and 992 transitions. Second operand 5 states. [2019-11-15 20:48:05,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:48:05,241 INFO L93 Difference]: Finished difference Result 464 states and 1146 transitions. [2019-11-15 20:48:05,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 20:48:05,242 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-11-15 20:48:05,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:48:05,245 INFO L225 Difference]: With dead ends: 464 [2019-11-15 20:48:05,246 INFO L226 Difference]: Without dead ends: 343 [2019-11-15 20:48:05,246 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-15 20:48:05,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2019-11-15 20:48:05,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 319. [2019-11-15 20:48:05,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2019-11-15 20:48:05,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 814 transitions. [2019-11-15 20:48:05,265 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 814 transitions. Word has length 22 [2019-11-15 20:48:05,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:48:05,265 INFO L462 AbstractCegarLoop]: Abstraction has 319 states and 814 transitions. [2019-11-15 20:48:05,265 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 20:48:05,266 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 814 transitions. [2019-11-15 20:48:05,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-15 20:48:05,267 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:48:05,267 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:48:05,268 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:48:05,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:48:05,268 INFO L82 PathProgramCache]: Analyzing trace with hash -509840719, now seen corresponding path program 1 times [2019-11-15 20:48:05,268 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:48:05,269 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963618974] [2019-11-15 20:48:05,269 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:05,269 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:05,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:48:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:48:05,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:05,379 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963618974] [2019-11-15 20:48:05,380 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:48:05,380 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-15 20:48:05,380 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169154286] [2019-11-15 20:48:05,381 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 20:48:05,381 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:48:05,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 20:48:05,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 20:48:05,381 INFO L87 Difference]: Start difference. First operand 319 states and 814 transitions. Second operand 5 states. [2019-11-15 20:48:05,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:48:05,441 INFO L93 Difference]: Finished difference Result 420 states and 1016 transitions. [2019-11-15 20:48:05,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 20:48:05,442 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-11-15 20:48:05,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:48:05,445 INFO L225 Difference]: With dead ends: 420 [2019-11-15 20:48:05,445 INFO L226 Difference]: Without dead ends: 290 [2019-11-15 20:48:05,446 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-15 20:48:05,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2019-11-15 20:48:05,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2019-11-15 20:48:05,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2019-11-15 20:48:05,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 714 transitions. [2019-11-15 20:48:05,459 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 714 transitions. Word has length 22 [2019-11-15 20:48:05,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:48:05,460 INFO L462 AbstractCegarLoop]: Abstraction has 290 states and 714 transitions. [2019-11-15 20:48:05,460 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 20:48:05,460 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 714 transitions. [2019-11-15 20:48:05,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-15 20:48:05,462 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:48:05,462 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:48:05,462 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:48:05,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:48:05,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1422570323, now seen corresponding path program 1 times [2019-11-15 20:48:05,463 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:48:05,463 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168159977] [2019-11-15 20:48:05,464 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:05,464 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:05,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:48:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:48:05,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:05,594 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168159977] [2019-11-15 20:48:05,594 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:48:05,594 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-15 20:48:05,595 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219494871] [2019-11-15 20:48:05,595 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 20:48:05,595 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:48:05,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 20:48:05,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-15 20:48:05,596 INFO L87 Difference]: Start difference. First operand 290 states and 714 transitions. Second operand 6 states. [2019-11-15 20:48:05,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:48:05,710 INFO L93 Difference]: Finished difference Result 437 states and 1057 transitions. [2019-11-15 20:48:05,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 20:48:05,711 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2019-11-15 20:48:05,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:48:05,714 INFO L225 Difference]: With dead ends: 437 [2019-11-15 20:48:05,715 INFO L226 Difference]: Without dead ends: 300 [2019-11-15 20:48:05,715 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-15 20:48:05,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2019-11-15 20:48:05,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 287. [2019-11-15 20:48:05,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2019-11-15 20:48:05,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 708 transitions. [2019-11-15 20:48:05,732 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 708 transitions. Word has length 25 [2019-11-15 20:48:05,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:48:05,733 INFO L462 AbstractCegarLoop]: Abstraction has 287 states and 708 transitions. [2019-11-15 20:48:05,733 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 20:48:05,733 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 708 transitions. [2019-11-15 20:48:05,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-15 20:48:05,739 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:48:05,739 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:48:05,739 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:48:05,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:48:05,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1011235803, now seen corresponding path program 2 times [2019-11-15 20:48:05,740 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:48:05,741 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577568146] [2019-11-15 20:48:05,741 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:05,741 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:05,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:48:05,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:48:05,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:05,905 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577568146] [2019-11-15 20:48:05,905 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:48:05,906 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-15 20:48:05,906 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819290948] [2019-11-15 20:48:05,906 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 20:48:05,907 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:48:05,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 20:48:05,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-15 20:48:05,907 INFO L87 Difference]: Start difference. First operand 287 states and 708 transitions. Second operand 6 states. [2019-11-15 20:48:06,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:48:06,086 INFO L93 Difference]: Finished difference Result 545 states and 1322 transitions. [2019-11-15 20:48:06,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-15 20:48:06,087 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2019-11-15 20:48:06,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:48:06,091 INFO L225 Difference]: With dead ends: 545 [2019-11-15 20:48:06,091 INFO L226 Difference]: Without dead ends: 335 [2019-11-15 20:48:06,092 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-11-15 20:48:06,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2019-11-15 20:48:06,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 300. [2019-11-15 20:48:06,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2019-11-15 20:48:06,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 734 transitions. [2019-11-15 20:48:06,109 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 734 transitions. Word has length 25 [2019-11-15 20:48:06,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:48:06,110 INFO L462 AbstractCegarLoop]: Abstraction has 300 states and 734 transitions. [2019-11-15 20:48:06,110 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 20:48:06,110 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 734 transitions. [2019-11-15 20:48:06,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-15 20:48:06,112 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:48:06,112 INFO L380 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] [2019-11-15 20:48:06,120 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:48:06,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:48:06,122 INFO L82 PathProgramCache]: Analyzing trace with hash -871830122, now seen corresponding path program 1 times [2019-11-15 20:48:06,123 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:48:06,123 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73982595] [2019-11-15 20:48:06,123 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:06,123 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:06,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:48:06,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:48:06,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:06,296 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73982595] [2019-11-15 20:48:06,297 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287517911] [2019-11-15 20:48:06,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:48:06,371 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-15 20:48:06,378 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:48:06,425 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:06,429 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:06,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:06,441 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:48:06,441 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-11-15 20:48:06,442 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135972423] [2019-11-15 20:48:06,443 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-15 20:48:06,443 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:48:06,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-15 20:48:06,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-15 20:48:06,444 INFO L87 Difference]: Start difference. First operand 300 states and 734 transitions. Second operand 8 states. [2019-11-15 20:48:06,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:48:06,595 INFO L93 Difference]: Finished difference Result 608 states and 1448 transitions. [2019-11-15 20:48:06,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-15 20:48:06,596 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2019-11-15 20:48:06,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:48:06,600 INFO L225 Difference]: With dead ends: 608 [2019-11-15 20:48:06,601 INFO L226 Difference]: Without dead ends: 419 [2019-11-15 20:48:06,601 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-11-15 20:48:06,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2019-11-15 20:48:06,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 379. [2019-11-15 20:48:06,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2019-11-15 20:48:06,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 896 transitions. [2019-11-15 20:48:06,627 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 896 transitions. Word has length 29 [2019-11-15 20:48:06,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:48:06,632 INFO L462 AbstractCegarLoop]: Abstraction has 379 states and 896 transitions. [2019-11-15 20:48:06,632 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-15 20:48:06,632 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 896 transitions. [2019-11-15 20:48:06,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-15 20:48:06,638 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:48:06,638 INFO L380 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] [2019-11-15 20:48:06,854 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:06,854 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:48:06,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:48:06,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1611267919, now seen corresponding path program 1 times [2019-11-15 20:48:06,855 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:48:06,855 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451494864] [2019-11-15 20:48:06,855 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:06,855 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:06,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:48:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:48:06,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:06,997 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451494864] [2019-11-15 20:48:06,997 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857142671] [2019-11-15 20:48:06,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:07,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:48:07,078 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-15 20:48:07,083 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:48:07,113 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:07,114 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:07,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:07,123 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:48:07,123 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-11-15 20:48:07,124 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468243479] [2019-11-15 20:48:07,124 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-15 20:48:07,125 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:48:07,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-15 20:48:07,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-11-15 20:48:07,126 INFO L87 Difference]: Start difference. First operand 379 states and 896 transitions. Second operand 9 states. [2019-11-15 20:48:07,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:48:07,359 INFO L93 Difference]: Finished difference Result 652 states and 1536 transitions. [2019-11-15 20:48:07,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-15 20:48:07,359 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2019-11-15 20:48:07,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:48:07,364 INFO L225 Difference]: With dead ends: 652 [2019-11-15 20:48:07,364 INFO L226 Difference]: Without dead ends: 463 [2019-11-15 20:48:07,365 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-11-15 20:48:07,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2019-11-15 20:48:07,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 356. [2019-11-15 20:48:07,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2019-11-15 20:48:07,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 846 transitions. [2019-11-15 20:48:07,382 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 846 transitions. Word has length 33 [2019-11-15 20:48:07,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:48:07,383 INFO L462 AbstractCegarLoop]: Abstraction has 356 states and 846 transitions. [2019-11-15 20:48:07,383 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-15 20:48:07,383 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 846 transitions. [2019-11-15 20:48:07,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-15 20:48:07,384 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:48:07,385 INFO L380 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] [2019-11-15 20:48:07,590 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:07,594 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:48:07,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:48:07,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1904071158, now seen corresponding path program 2 times [2019-11-15 20:48:07,595 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:48:07,595 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977636789] [2019-11-15 20:48:07,595 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:07,622 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:07,622 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:48:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:48:07,744 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 20:48:07,745 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977636789] [2019-11-15 20:48:07,745 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840221054] [2019-11-15 20:48:07,745 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:07,833 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 20:48:07,833 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 20:48:07,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-15 20:48:07,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:48:07,865 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:07,866 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:07,868 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:07,871 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 20:48:07,871 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:48:07,871 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-11-15 20:48:07,871 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476810392] [2019-11-15 20:48:07,872 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-15 20:48:07,872 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:48:07,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-15 20:48:07,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-11-15 20:48:07,873 INFO L87 Difference]: Start difference. First operand 356 states and 846 transitions. Second operand 9 states. [2019-11-15 20:48:08,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:48:08,043 INFO L93 Difference]: Finished difference Result 720 states and 1672 transitions. [2019-11-15 20:48:08,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-15 20:48:08,043 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2019-11-15 20:48:08,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:48:08,048 INFO L225 Difference]: With dead ends: 720 [2019-11-15 20:48:08,048 INFO L226 Difference]: Without dead ends: 519 [2019-11-15 20:48:08,048 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2019-11-15 20:48:08,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2019-11-15 20:48:08,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 423. [2019-11-15 20:48:08,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2019-11-15 20:48:08,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 980 transitions. [2019-11-15 20:48:08,065 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 980 transitions. Word has length 37 [2019-11-15 20:48:08,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:48:08,066 INFO L462 AbstractCegarLoop]: Abstraction has 423 states and 980 transitions. [2019-11-15 20:48:08,066 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-15 20:48:08,066 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 980 transitions. [2019-11-15 20:48:08,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-15 20:48:08,067 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:48:08,067 INFO L380 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] [2019-11-15 20:48:08,274 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:08,274 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:48:08,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:48:08,275 INFO L82 PathProgramCache]: Analyzing trace with hash 858521875, now seen corresponding path program 3 times [2019-11-15 20:48:08,275 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:48:08,275 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15805674] [2019-11-15 20:48:08,276 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:08,276 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:08,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:48:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:48:08,475 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:08,476 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15805674] [2019-11-15 20:48:08,476 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608232337] [2019-11-15 20:48:08,476 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:08,567 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-15 20:48:08,567 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 20:48:08,569 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-15 20:48:08,578 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:48:08,610 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:08,611 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:08,612 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:08,616 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:08,616 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:48:08,616 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2019-11-15 20:48:08,617 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487204308] [2019-11-15 20:48:08,617 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-15 20:48:08,618 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:48:08,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-15 20:48:08,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-11-15 20:48:08,619 INFO L87 Difference]: Start difference. First operand 423 states and 980 transitions. Second operand 11 states. [2019-11-15 20:48:08,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:48:08,914 INFO L93 Difference]: Finished difference Result 708 states and 1648 transitions. [2019-11-15 20:48:08,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-15 20:48:08,916 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2019-11-15 20:48:08,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:48:08,920 INFO L225 Difference]: With dead ends: 708 [2019-11-15 20:48:08,920 INFO L226 Difference]: Without dead ends: 447 [2019-11-15 20:48:08,920 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2019-11-15 20:48:08,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2019-11-15 20:48:08,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 345. [2019-11-15 20:48:08,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 345 states. [2019-11-15 20:48:08,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 824 transitions. [2019-11-15 20:48:08,937 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 824 transitions. Word has length 41 [2019-11-15 20:48:08,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:48:08,937 INFO L462 AbstractCegarLoop]: Abstraction has 345 states and 824 transitions. [2019-11-15 20:48:08,937 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-15 20:48:08,938 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 824 transitions. [2019-11-15 20:48:08,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-15 20:48:08,943 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:48:08,944 INFO L380 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] [2019-11-15 20:48:09,148 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:09,149 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:48:09,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:48:09,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1656791919, now seen corresponding path program 4 times [2019-11-15 20:48:09,149 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:48:09,150 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468695007] [2019-11-15 20:48:09,150 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:09,150 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:09,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:48:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:48:09,300 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:09,300 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468695007] [2019-11-15 20:48:09,301 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590093328] [2019-11-15 20:48:09,301 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:09,389 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-15 20:48:09,389 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 20:48:09,390 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-15 20:48:09,392 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:48:09,423 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:09,424 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:09,429 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:09,429 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:48:09,429 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2019-11-15 20:48:09,430 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885922462] [2019-11-15 20:48:09,430 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-15 20:48:09,430 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:48:09,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-15 20:48:09,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-15 20:48:09,431 INFO L87 Difference]: Start difference. First operand 345 states and 824 transitions. Second operand 11 states. [2019-11-15 20:48:09,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:48:09,690 INFO L93 Difference]: Finished difference Result 692 states and 1616 transitions. [2019-11-15 20:48:09,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-15 20:48:09,691 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2019-11-15 20:48:09,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:48:09,694 INFO L225 Difference]: With dead ends: 692 [2019-11-15 20:48:09,695 INFO L226 Difference]: Without dead ends: 503 [2019-11-15 20:48:09,695 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2019-11-15 20:48:09,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2019-11-15 20:48:09,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 475. [2019-11-15 20:48:09,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2019-11-15 20:48:09,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 1088 transitions. [2019-11-15 20:48:09,712 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 1088 transitions. Word has length 41 [2019-11-15 20:48:09,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:48:09,712 INFO L462 AbstractCegarLoop]: Abstraction has 475 states and 1088 transitions. [2019-11-15 20:48:09,712 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-15 20:48:09,713 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 1088 transitions. [2019-11-15 20:48:09,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-15 20:48:09,714 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:48:09,714 INFO L380 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] [2019-11-15 20:48:09,921 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:09,921 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:48:09,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:48:09,921 INFO L82 PathProgramCache]: Analyzing trace with hash -645047466, now seen corresponding path program 5 times [2019-11-15 20:48:09,922 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:48:09,922 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732259083] [2019-11-15 20:48:09,922 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:09,922 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:09,922 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:48:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:48:10,122 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:10,123 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732259083] [2019-11-15 20:48:10,123 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663182620] [2019-11-15 20:48:10,123 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:10,210 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-11-15 20:48:10,210 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 20:48:10,211 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-15 20:48:10,213 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:48:10,239 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:10,240 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:10,245 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:10,247 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:48:10,248 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-11-15 20:48:10,248 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216139656] [2019-11-15 20:48:10,253 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-15 20:48:10,253 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:48:10,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-15 20:48:10,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-11-15 20:48:10,254 INFO L87 Difference]: Start difference. First operand 475 states and 1088 transitions. Second operand 12 states. [2019-11-15 20:48:10,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:48:10,518 INFO L93 Difference]: Finished difference Result 732 states and 1696 transitions. [2019-11-15 20:48:10,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-15 20:48:10,519 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2019-11-15 20:48:10,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:48:10,523 INFO L225 Difference]: With dead ends: 732 [2019-11-15 20:48:10,523 INFO L226 Difference]: Without dead ends: 495 [2019-11-15 20:48:10,524 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2019-11-15 20:48:10,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2019-11-15 20:48:10,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 377. [2019-11-15 20:48:10,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2019-11-15 20:48:10,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 888 transitions. [2019-11-15 20:48:10,551 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 888 transitions. Word has length 45 [2019-11-15 20:48:10,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:48:10,552 INFO L462 AbstractCegarLoop]: Abstraction has 377 states and 888 transitions. [2019-11-15 20:48:10,552 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-15 20:48:10,552 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 888 transitions. [2019-11-15 20:48:10,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-11-15 20:48:10,553 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:48:10,554 INFO L380 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] [2019-11-15 20:48:10,757 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:10,765 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:48:10,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:48:10,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1356781681, now seen corresponding path program 6 times [2019-11-15 20:48:10,766 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:48:10,766 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365071432] [2019-11-15 20:48:10,766 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:10,766 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:10,766 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:48:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:48:10,929 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:10,930 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365071432] [2019-11-15 20:48:10,930 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315698212] [2019-11-15 20:48:10,930 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:11,022 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-11-15 20:48:11,022 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 20:48:11,023 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-15 20:48:11,033 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:48:11,065 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:11,066 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:11,067 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:11,075 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:11,075 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:48:11,075 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2019-11-15 20:48:11,075 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388426740] [2019-11-15 20:48:11,077 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-15 20:48:11,077 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:48:11,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-15 20:48:11,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2019-11-15 20:48:11,078 INFO L87 Difference]: Start difference. First operand 377 states and 888 transitions. Second operand 13 states. [2019-11-15 20:48:11,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:48:11,454 INFO L93 Difference]: Finished difference Result 740 states and 1712 transitions. [2019-11-15 20:48:11,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-15 20:48:11,455 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2019-11-15 20:48:11,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:48:11,460 INFO L225 Difference]: With dead ends: 740 [2019-11-15 20:48:11,461 INFO L226 Difference]: Without dead ends: 527 [2019-11-15 20:48:11,461 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2019-11-15 20:48:11,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2019-11-15 20:48:11,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 396. [2019-11-15 20:48:11,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 396 states. [2019-11-15 20:48:11,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 926 transitions. [2019-11-15 20:48:11,482 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 926 transitions. Word has length 49 [2019-11-15 20:48:11,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:48:11,482 INFO L462 AbstractCegarLoop]: Abstraction has 396 states and 926 transitions. [2019-11-15 20:48:11,482 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-15 20:48:11,482 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 926 transitions. [2019-11-15 20:48:11,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-15 20:48:11,484 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:48:11,484 INFO L380 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] [2019-11-15 20:48:11,688 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:11,688 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:48:11,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:48:11,689 INFO L82 PathProgramCache]: Analyzing trace with hash -285720010, now seen corresponding path program 7 times [2019-11-15 20:48:11,689 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:48:11,689 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005587361] [2019-11-15 20:48:11,689 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:11,690 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:11,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:48:11,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:48:11,955 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:11,955 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005587361] [2019-11-15 20:48:11,956 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697397692] [2019-11-15 20:48:11,956 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:48:12,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-15 20:48:12,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:48:12,136 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:12,138 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:12,144 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:12,144 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:48:12,145 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2019-11-15 20:48:12,145 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250888049] [2019-11-15 20:48:12,145 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-15 20:48:12,146 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:48:12,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-15 20:48:12,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2019-11-15 20:48:12,147 INFO L87 Difference]: Start difference. First operand 396 states and 926 transitions. Second operand 14 states. [2019-11-15 20:48:12,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:48:12,404 INFO L93 Difference]: Finished difference Result 800 states and 1832 transitions. [2019-11-15 20:48:12,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-15 20:48:12,405 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2019-11-15 20:48:12,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:48:12,409 INFO L225 Difference]: With dead ends: 800 [2019-11-15 20:48:12,409 INFO L226 Difference]: Without dead ends: 611 [2019-11-15 20:48:12,410 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2019-11-15 20:48:12,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2019-11-15 20:48:12,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 571. [2019-11-15 20:48:12,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2019-11-15 20:48:12,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 1280 transitions. [2019-11-15 20:48:12,429 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 1280 transitions. Word has length 53 [2019-11-15 20:48:12,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:48:12,429 INFO L462 AbstractCegarLoop]: Abstraction has 571 states and 1280 transitions. [2019-11-15 20:48:12,429 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-15 20:48:12,429 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 1280 transitions. [2019-11-15 20:48:12,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-11-15 20:48:12,431 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:48:12,431 INFO L380 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] [2019-11-15 20:48:12,634 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:12,638 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:48:12,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:48:12,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1833667503, now seen corresponding path program 8 times [2019-11-15 20:48:12,638 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:48:12,638 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155035387] [2019-11-15 20:48:12,639 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:12,639 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:12,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:48:12,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:48:12,812 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:12,813 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155035387] [2019-11-15 20:48:12,813 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549150207] [2019-11-15 20:48:12,813 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:12,908 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 20:48:12,908 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 20:48:12,909 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-15 20:48:12,911 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:48:12,948 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:12,949 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:12,950 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:12,955 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:12,956 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:48:12,956 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2019-11-15 20:48:12,956 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260244551] [2019-11-15 20:48:12,957 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-15 20:48:12,957 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:48:12,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-15 20:48:12,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2019-11-15 20:48:12,958 INFO L87 Difference]: Start difference. First operand 571 states and 1280 transitions. Second operand 15 states. [2019-11-15 20:48:13,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:48:13,346 INFO L93 Difference]: Finished difference Result 828 states and 1888 transitions. [2019-11-15 20:48:13,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-15 20:48:13,347 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2019-11-15 20:48:13,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:48:13,352 INFO L225 Difference]: With dead ends: 828 [2019-11-15 20:48:13,352 INFO L226 Difference]: Without dead ends: 615 [2019-11-15 20:48:13,353 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=188, Invalid=514, Unknown=0, NotChecked=0, Total=702 [2019-11-15 20:48:13,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2019-11-15 20:48:13,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 603. [2019-11-15 20:48:13,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-11-15 20:48:13,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 1344 transitions. [2019-11-15 20:48:13,371 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 1344 transitions. Word has length 57 [2019-11-15 20:48:13,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:48:13,372 INFO L462 AbstractCegarLoop]: Abstraction has 603 states and 1344 transitions. [2019-11-15 20:48:13,372 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-15 20:48:13,372 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 1344 transitions. [2019-11-15 20:48:13,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-11-15 20:48:13,374 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:48:13,374 INFO L380 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:48:13,585 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:13,586 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:48:13,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:48:13,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1419675286, now seen corresponding path program 9 times [2019-11-15 20:48:13,586 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:48:13,586 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010190614] [2019-11-15 20:48:13,587 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:13,587 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:13,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:48:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:48:13,779 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 20:48:13,779 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010190614] [2019-11-15 20:48:13,779 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868035639] [2019-11-15 20:48:13,779 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:13,863 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-11-15 20:48:13,863 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 20:48:13,864 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-15 20:48:13,865 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:48:13,900 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:13,901 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:13,902 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:13,910 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-15 20:48:13,910 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:48:13,910 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2019-11-15 20:48:13,911 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684700368] [2019-11-15 20:48:13,911 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-15 20:48:13,911 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:48:13,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-15 20:48:13,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2019-11-15 20:48:13,912 INFO L87 Difference]: Start difference. First operand 603 states and 1344 transitions. Second operand 15 states. [2019-11-15 20:48:14,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:48:14,234 INFO L93 Difference]: Finished difference Result 876 states and 1984 transitions. [2019-11-15 20:48:14,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-15 20:48:14,235 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 61 [2019-11-15 20:48:14,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:48:14,241 INFO L225 Difference]: With dead ends: 876 [2019-11-15 20:48:14,241 INFO L226 Difference]: Without dead ends: 675 [2019-11-15 20:48:14,244 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=200, Invalid=502, Unknown=0, NotChecked=0, Total=702 [2019-11-15 20:48:14,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2019-11-15 20:48:14,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 619. [2019-11-15 20:48:14,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2019-11-15 20:48:14,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 1376 transitions. [2019-11-15 20:48:14,263 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 1376 transitions. Word has length 61 [2019-11-15 20:48:14,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:48:14,264 INFO L462 AbstractCegarLoop]: Abstraction has 619 states and 1376 transitions. [2019-11-15 20:48:14,264 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-15 20:48:14,264 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 1376 transitions. [2019-11-15 20:48:14,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-11-15 20:48:14,266 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:48:14,266 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:48:14,470 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:14,471 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:48:14,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:48:14,471 INFO L82 PathProgramCache]: Analyzing trace with hash 2007066035, now seen corresponding path program 10 times [2019-11-15 20:48:14,471 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:48:14,472 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085847696] [2019-11-15 20:48:14,472 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:14,472 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:14,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:48:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:48:14,676 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:14,677 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085847696] [2019-11-15 20:48:14,677 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346509425] [2019-11-15 20:48:14,677 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:14,751 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-15 20:48:14,751 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 20:48:14,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-15 20:48:14,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:48:14,786 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:14,787 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:14,788 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:14,797 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:14,798 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:48:14,798 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2019-11-15 20:48:14,798 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386475464] [2019-11-15 20:48:14,799 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-15 20:48:14,799 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:48:14,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-15 20:48:14,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2019-11-15 20:48:14,800 INFO L87 Difference]: Start difference. First operand 619 states and 1376 transitions. Second operand 17 states. [2019-11-15 20:48:15,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:48:15,207 INFO L93 Difference]: Finished difference Result 974 states and 2229 transitions. [2019-11-15 20:48:15,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-15 20:48:15,208 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 65 [2019-11-15 20:48:15,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:48:15,213 INFO L225 Difference]: With dead ends: 974 [2019-11-15 20:48:15,213 INFO L226 Difference]: Without dead ends: 679 [2019-11-15 20:48:15,214 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=276, Invalid=716, Unknown=0, NotChecked=0, Total=992 [2019-11-15 20:48:15,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2019-11-15 20:48:15,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 481. [2019-11-15 20:48:15,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2019-11-15 20:48:15,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 1096 transitions. [2019-11-15 20:48:15,233 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 1096 transitions. Word has length 65 [2019-11-15 20:48:15,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:48:15,234 INFO L462 AbstractCegarLoop]: Abstraction has 481 states and 1096 transitions. [2019-11-15 20:48:15,234 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-15 20:48:15,234 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 1096 transitions. [2019-11-15 20:48:15,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-11-15 20:48:15,236 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:48:15,236 INFO L380 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:48:15,442 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:15,442 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:48:15,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:48:15,443 INFO L82 PathProgramCache]: Analyzing trace with hash 544491342, now seen corresponding path program 11 times [2019-11-15 20:48:15,443 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:48:15,443 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772699586] [2019-11-15 20:48:15,443 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:15,443 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:15,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:48:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:48:15,709 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:15,709 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772699586] [2019-11-15 20:48:15,709 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823252720] [2019-11-15 20:48:15,710 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:15,816 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-11-15 20:48:15,817 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 20:48:15,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-15 20:48:15,819 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:48:15,847 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:15,847 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:15,849 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:15,856 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:15,856 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:48:15,856 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2019-11-15 20:48:15,856 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408786665] [2019-11-15 20:48:15,857 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-15 20:48:15,857 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:48:15,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-15 20:48:15,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2019-11-15 20:48:15,858 INFO L87 Difference]: Start difference. First operand 481 states and 1096 transitions. Second operand 18 states. [2019-11-15 20:48:16,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:48:16,275 INFO L93 Difference]: Finished difference Result 1062 states and 2405 transitions. [2019-11-15 20:48:16,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-15 20:48:16,276 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 69 [2019-11-15 20:48:16,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:48:16,281 INFO L225 Difference]: With dead ends: 1062 [2019-11-15 20:48:16,282 INFO L226 Difference]: Without dead ends: 767 [2019-11-15 20:48:16,283 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=312, Invalid=810, Unknown=0, NotChecked=0, Total=1122 [2019-11-15 20:48:16,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2019-11-15 20:48:16,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 500. [2019-11-15 20:48:16,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2019-11-15 20:48:16,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 1134 transitions. [2019-11-15 20:48:16,303 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 1134 transitions. Word has length 69 [2019-11-15 20:48:16,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:48:16,303 INFO L462 AbstractCegarLoop]: Abstraction has 500 states and 1134 transitions. [2019-11-15 20:48:16,303 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-15 20:48:16,304 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 1134 transitions. [2019-11-15 20:48:16,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-11-15 20:48:16,305 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:48:16,305 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:48:16,514 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:16,514 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:48:16,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:48:16,515 INFO L82 PathProgramCache]: Analyzing trace with hash 645143699, now seen corresponding path program 12 times [2019-11-15 20:48:16,515 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:48:16,515 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431574693] [2019-11-15 20:48:16,515 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:16,515 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:16,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:48:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:48:16,798 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:16,798 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431574693] [2019-11-15 20:48:16,798 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789451986] [2019-11-15 20:48:16,798 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:16,901 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-11-15 20:48:16,901 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 20:48:16,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-15 20:48:16,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:48:16,943 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:16,944 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:16,945 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:16,953 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:16,955 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:48:16,956 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2019-11-15 20:48:16,956 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497637434] [2019-11-15 20:48:16,956 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-15 20:48:16,957 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:48:16,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-15 20:48:16,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-11-15 20:48:16,958 INFO L87 Difference]: Start difference. First operand 500 states and 1134 transitions. Second operand 19 states. [2019-11-15 20:48:17,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:48:17,433 INFO L93 Difference]: Finished difference Result 1078 states and 2437 transitions. [2019-11-15 20:48:17,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-11-15 20:48:17,434 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 73 [2019-11-15 20:48:17,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:48:17,439 INFO L225 Difference]: With dead ends: 1078 [2019-11-15 20:48:17,439 INFO L226 Difference]: Without dead ends: 783 [2019-11-15 20:48:17,440 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=352, Invalid=908, Unknown=0, NotChecked=0, Total=1260 [2019-11-15 20:48:17,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2019-11-15 20:48:17,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 513. [2019-11-15 20:48:17,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2019-11-15 20:48:17,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 1160 transitions. [2019-11-15 20:48:17,457 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 1160 transitions. Word has length 73 [2019-11-15 20:48:17,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:48:17,457 INFO L462 AbstractCegarLoop]: Abstraction has 513 states and 1160 transitions. [2019-11-15 20:48:17,457 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-15 20:48:17,458 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 1160 transitions. [2019-11-15 20:48:17,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-11-15 20:48:17,459 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:48:17,459 INFO L380 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:48:17,663 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:17,663 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:48:17,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:48:17,664 INFO L82 PathProgramCache]: Analyzing trace with hash -934989010, now seen corresponding path program 13 times [2019-11-15 20:48:17,664 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:48:17,664 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614305913] [2019-11-15 20:48:17,664 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:17,664 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:17,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:48:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:48:17,922 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:17,922 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614305913] [2019-11-15 20:48:17,922 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315690917] [2019-11-15 20:48:17,923 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:48:18,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-15 20:48:18,012 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:48:18,049 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:18,049 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:18,050 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:18,059 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:18,060 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:48:18,060 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2019-11-15 20:48:18,060 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758738613] [2019-11-15 20:48:18,062 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-15 20:48:18,062 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:48:18,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-15 20:48:18,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2019-11-15 20:48:18,063 INFO L87 Difference]: Start difference. First operand 513 states and 1160 transitions. Second operand 20 states. [2019-11-15 20:48:18,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:48:18,599 INFO L93 Difference]: Finished difference Result 1126 states and 2533 transitions. [2019-11-15 20:48:18,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-15 20:48:18,599 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 77 [2019-11-15 20:48:18,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:48:18,605 INFO L225 Difference]: With dead ends: 1126 [2019-11-15 20:48:18,605 INFO L226 Difference]: Without dead ends: 831 [2019-11-15 20:48:18,606 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=393, Invalid=1013, Unknown=0, NotChecked=0, Total=1406 [2019-11-15 20:48:18,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2019-11-15 20:48:18,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 532. [2019-11-15 20:48:18,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2019-11-15 20:48:18,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 1198 transitions. [2019-11-15 20:48:18,623 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 1198 transitions. Word has length 77 [2019-11-15 20:48:18,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:48:18,624 INFO L462 AbstractCegarLoop]: Abstraction has 532 states and 1198 transitions. [2019-11-15 20:48:18,624 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-15 20:48:18,624 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 1198 transitions. [2019-11-15 20:48:18,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-11-15 20:48:18,626 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:48:18,626 INFO L380 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:48:18,829 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:18,829 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:48:18,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:48:18,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1175581555, now seen corresponding path program 14 times [2019-11-15 20:48:18,830 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:48:18,830 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719315848] [2019-11-15 20:48:18,830 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:18,830 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:18,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:48:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:48:19,187 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:19,187 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719315848] [2019-11-15 20:48:19,187 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162417255] [2019-11-15 20:48:19,188 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:19,282 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 20:48:19,282 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 20:48:19,284 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-15 20:48:19,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:48:19,354 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:19,357 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:19,358 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:19,366 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:19,366 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:48:19,367 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2019-11-15 20:48:19,367 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942231245] [2019-11-15 20:48:19,369 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-15 20:48:19,369 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:48:19,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-15 20:48:19,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2019-11-15 20:48:19,370 INFO L87 Difference]: Start difference. First operand 532 states and 1198 transitions. Second operand 21 states. [2019-11-15 20:48:19,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:48:19,861 INFO L93 Difference]: Finished difference Result 1142 states and 2565 transitions. [2019-11-15 20:48:19,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-11-15 20:48:19,861 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 81 [2019-11-15 20:48:19,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:48:19,866 INFO L225 Difference]: With dead ends: 1142 [2019-11-15 20:48:19,866 INFO L226 Difference]: Without dead ends: 847 [2019-11-15 20:48:19,867 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=438, Invalid=1122, Unknown=0, NotChecked=0, Total=1560 [2019-11-15 20:48:19,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2019-11-15 20:48:19,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 545. [2019-11-15 20:48:19,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2019-11-15 20:48:19,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 1224 transitions. [2019-11-15 20:48:19,883 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 1224 transitions. Word has length 81 [2019-11-15 20:48:19,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:48:19,883 INFO L462 AbstractCegarLoop]: Abstraction has 545 states and 1224 transitions. [2019-11-15 20:48:19,883 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-15 20:48:19,883 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 1224 transitions. [2019-11-15 20:48:19,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-11-15 20:48:19,885 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:48:19,885 INFO L380 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:48:20,088 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:20,089 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:48:20,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:48:20,089 INFO L82 PathProgramCache]: Analyzing trace with hash 769408782, now seen corresponding path program 15 times [2019-11-15 20:48:20,089 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:48:20,090 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076579048] [2019-11-15 20:48:20,090 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:20,090 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:20,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:48:20,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:48:20,404 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:20,405 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076579048] [2019-11-15 20:48:20,405 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390087996] [2019-11-15 20:48:20,405 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:20,501 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2019-11-15 20:48:20,501 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 20:48:20,502 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-15 20:48:20,504 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:48:20,542 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:20,543 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:20,544 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:20,553 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:20,553 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:48:20,554 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2019-11-15 20:48:20,554 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356976729] [2019-11-15 20:48:20,556 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-15 20:48:20,556 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:48:20,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-15 20:48:20,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2019-11-15 20:48:20,557 INFO L87 Difference]: Start difference. First operand 545 states and 1224 transitions. Second operand 22 states. [2019-11-15 20:48:21,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:48:21,160 INFO L93 Difference]: Finished difference Result 1190 states and 2661 transitions. [2019-11-15 20:48:21,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-15 20:48:21,160 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 85 [2019-11-15 20:48:21,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:48:21,166 INFO L225 Difference]: With dead ends: 1190 [2019-11-15 20:48:21,167 INFO L226 Difference]: Without dead ends: 895 [2019-11-15 20:48:21,167 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=484, Invalid=1238, Unknown=0, NotChecked=0, Total=1722 [2019-11-15 20:48:21,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2019-11-15 20:48:21,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 564. [2019-11-15 20:48:21,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 564 states. [2019-11-15 20:48:21,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 1262 transitions. [2019-11-15 20:48:21,185 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 1262 transitions. Word has length 85 [2019-11-15 20:48:21,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:48:21,185 INFO L462 AbstractCegarLoop]: Abstraction has 564 states and 1262 transitions. [2019-11-15 20:48:21,186 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-15 20:48:21,186 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 1262 transitions. [2019-11-15 20:48:21,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-15 20:48:21,187 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:48:21,188 INFO L380 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:48:21,391 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:21,392 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:48:21,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:48:21,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1767565907, now seen corresponding path program 16 times [2019-11-15 20:48:21,392 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:48:21,392 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577428518] [2019-11-15 20:48:21,392 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:21,392 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:21,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:48:21,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:48:21,737 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:21,737 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577428518] [2019-11-15 20:48:21,737 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980448395] [2019-11-15 20:48:21,737 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:21,856 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-15 20:48:21,856 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 20:48:21,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-15 20:48:21,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:48:21,893 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:21,894 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:21,894 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:21,907 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:21,907 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:48:21,907 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2019-11-15 20:48:21,907 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881089784] [2019-11-15 20:48:21,908 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-15 20:48:21,908 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:48:21,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-15 20:48:21,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2019-11-15 20:48:21,909 INFO L87 Difference]: Start difference. First operand 564 states and 1262 transitions. Second operand 23 states. [2019-11-15 20:48:22,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:48:22,687 INFO L93 Difference]: Finished difference Result 1108 states and 2448 transitions. [2019-11-15 20:48:22,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-11-15 20:48:22,687 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 89 [2019-11-15 20:48:22,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:48:22,693 INFO L225 Difference]: With dead ends: 1108 [2019-11-15 20:48:22,693 INFO L226 Difference]: Without dead ends: 871 [2019-11-15 20:48:22,694 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=529, Invalid=1277, Unknown=0, NotChecked=0, Total=1806 [2019-11-15 20:48:22,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2019-11-15 20:48:22,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 843. [2019-11-15 20:48:22,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 843 states. [2019-11-15 20:48:22,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1824 transitions. [2019-11-15 20:48:22,713 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1824 transitions. Word has length 89 [2019-11-15 20:48:22,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:48:22,714 INFO L462 AbstractCegarLoop]: Abstraction has 843 states and 1824 transitions. [2019-11-15 20:48:22,714 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-15 20:48:22,714 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1824 transitions. [2019-11-15 20:48:22,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-11-15 20:48:22,717 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:48:22,717 INFO L380 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:48:22,920 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:22,920 INFO L410 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:48:22,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:48:22,921 INFO L82 PathProgramCache]: Analyzing trace with hash 530949270, now seen corresponding path program 17 times [2019-11-15 20:48:22,921 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:48:22,921 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397536886] [2019-11-15 20:48:22,921 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:22,922 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:22,922 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:48:22,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:48:23,221 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:23,221 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397536886] [2019-11-15 20:48:23,221 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435410059] [2019-11-15 20:48:23,222 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:23,363 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2019-11-15 20:48:23,363 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 20:48:23,365 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-15 20:48:23,366 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:48:23,408 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:23,409 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:23,416 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:23,416 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:48:23,416 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2019-11-15 20:48:23,417 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585339857] [2019-11-15 20:48:23,417 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-15 20:48:23,417 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:48:23,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-15 20:48:23,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2019-11-15 20:48:23,418 INFO L87 Difference]: Start difference. First operand 843 states and 1824 transitions. Second operand 24 states. [2019-11-15 20:48:23,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:48:23,964 INFO L93 Difference]: Finished difference Result 1100 states and 2432 transitions. [2019-11-15 20:48:23,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-15 20:48:23,965 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 93 [2019-11-15 20:48:23,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:48:23,970 INFO L225 Difference]: With dead ends: 1100 [2019-11-15 20:48:23,970 INFO L226 Difference]: Without dead ends: 887 [2019-11-15 20:48:23,971 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=553, Invalid=1339, Unknown=0, NotChecked=0, Total=1892 [2019-11-15 20:48:23,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2019-11-15 20:48:23,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 593. [2019-11-15 20:48:23,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2019-11-15 20:48:23,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 1320 transitions. [2019-11-15 20:48:23,987 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 1320 transitions. Word has length 93 [2019-11-15 20:48:23,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:48:23,988 INFO L462 AbstractCegarLoop]: Abstraction has 593 states and 1320 transitions. [2019-11-15 20:48:23,988 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-11-15 20:48:23,988 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 1320 transitions. [2019-11-15 20:48:23,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-11-15 20:48:23,990 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:48:23,990 INFO L380 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:48:24,194 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:24,194 INFO L410 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:48:24,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:48:24,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1756586703, now seen corresponding path program 18 times [2019-11-15 20:48:24,194 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:48:24,195 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317166422] [2019-11-15 20:48:24,195 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:24,195 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:24,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:48:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:48:24,553 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 282 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:24,553 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317166422] [2019-11-15 20:48:24,553 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922520620] [2019-11-15 20:48:24,553 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:24,649 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-11-15 20:48:24,649 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 20:48:24,650 INFO L256 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-15 20:48:24,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:48:24,688 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:24,688 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 20:48:24,689 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 25 [2019-11-15 20:48:24,689 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226794065] [2019-11-15 20:48:24,691 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-15 20:48:24,691 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:48:24,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-15 20:48:24,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2019-11-15 20:48:24,692 INFO L87 Difference]: Start difference. First operand 593 states and 1320 transitions. Second operand 23 states. [2019-11-15 20:48:25,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:48:25,065 INFO L93 Difference]: Finished difference Result 2117 states and 4256 transitions. [2019-11-15 20:48:25,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-11-15 20:48:25,066 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 97 [2019-11-15 20:48:25,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:48:25,069 INFO L225 Difference]: With dead ends: 2117 [2019-11-15 20:48:25,069 INFO L226 Difference]: Without dead ends: 569 [2019-11-15 20:48:25,070 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=609, Invalid=1371, Unknown=0, NotChecked=0, Total=1980 [2019-11-15 20:48:25,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2019-11-15 20:48:25,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 569. [2019-11-15 20:48:25,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 569 states. [2019-11-15 20:48:25,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 1202 transitions. [2019-11-15 20:48:25,080 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 1202 transitions. Word has length 97 [2019-11-15 20:48:25,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:48:25,080 INFO L462 AbstractCegarLoop]: Abstraction has 569 states and 1202 transitions. [2019-11-15 20:48:25,081 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-15 20:48:25,081 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 1202 transitions. [2019-11-15 20:48:25,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-11-15 20:48:25,082 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:48:25,083 INFO L380 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:48:25,286 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:25,286 INFO L410 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:48:25,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:48:25,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1957453745, now seen corresponding path program 19 times [2019-11-15 20:48:25,287 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:48:25,287 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363713049] [2019-11-15 20:48:25,287 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:25,288 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:25,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:48:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:48:25,695 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:25,696 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363713049] [2019-11-15 20:48:25,696 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928572831] [2019-11-15 20:48:25,696 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:48:25,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 26 conjunts are in the unsatisfiable core [2019-11-15 20:48:25,805 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:48:25,844 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:25,844 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 20:48:25,857 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:25,858 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:48:25,858 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2019-11-15 20:48:25,858 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869535696] [2019-11-15 20:48:25,859 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-11-15 20:48:25,859 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:48:25,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-11-15 20:48:25,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2019-11-15 20:48:25,860 INFO L87 Difference]: Start difference. First operand 569 states and 1202 transitions. Second operand 25 states. [2019-11-15 20:48:26,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:48:26,385 INFO L93 Difference]: Finished difference Result 977 states and 2016 transitions. [2019-11-15 20:48:26,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-15 20:48:26,385 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 97 [2019-11-15 20:48:26,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:48:26,388 INFO L225 Difference]: With dead ends: 977 [2019-11-15 20:48:26,388 INFO L226 Difference]: Without dead ends: 567 [2019-11-15 20:48:26,389 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=642, Invalid=1428, Unknown=0, NotChecked=0, Total=2070 [2019-11-15 20:48:26,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2019-11-15 20:48:26,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2019-11-15 20:48:26,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 567 states. [2019-11-15 20:48:26,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 1197 transitions. [2019-11-15 20:48:26,401 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 1197 transitions. Word has length 97 [2019-11-15 20:48:26,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:48:26,402 INFO L462 AbstractCegarLoop]: Abstraction has 567 states and 1197 transitions. [2019-11-15 20:48:26,402 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-11-15 20:48:26,402 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 1197 transitions. [2019-11-15 20:48:26,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2019-11-15 20:48:26,404 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:48:26,404 INFO L380 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:48:26,608 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:26,609 INFO L410 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 20:48:26,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:48:26,609 INFO L82 PathProgramCache]: Analyzing trace with hash 835930998, now seen corresponding path program 20 times [2019-11-15 20:48:26,609 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:48:26,609 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409793031] [2019-11-15 20:48:26,609 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:26,609 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:48:26,610 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:48:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:48:27,115 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 282 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:27,116 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409793031] [2019-11-15 20:48:27,116 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459148609] [2019-11-15 20:48:27,116 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:27,244 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-15 20:48:27,245 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-15 20:48:27,246 INFO L256 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-15 20:48:27,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:48:27,303 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 343 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:48:27,304 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-15 20:48:27,304 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 25 [2019-11-15 20:48:27,305 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697756732] [2019-11-15 20:48:27,305 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-15 20:48:27,305 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:48:27,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-15 20:48:27,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2019-11-15 20:48:27,307 INFO L87 Difference]: Start difference. First operand 567 states and 1197 transitions. Second operand 23 states. [2019-11-15 20:48:27,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:48:27,695 INFO L93 Difference]: Finished difference Result 1883 states and 3445 transitions. [2019-11-15 20:48:27,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-11-15 20:48:27,696 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 101 [2019-11-15 20:48:27,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:48:27,696 INFO L225 Difference]: With dead ends: 1883 [2019-11-15 20:48:27,696 INFO L226 Difference]: Without dead ends: 0 [2019-11-15 20:48:27,697 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=609, Invalid=1371, Unknown=0, NotChecked=0, Total=1980 [2019-11-15 20:48:27,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-15 20:48:27,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-15 20:48:27,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-15 20:48:27,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 20:48:27,698 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 101 [2019-11-15 20:48:27,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:48:27,699 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 20:48:27,699 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-15 20:48:27,699 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-15 20:48:27,699 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-15 20:48:27,902 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:48:27,905 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-15 20:48:27,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 08:48:27 BasicIcfg [2019-11-15 20:48:27,906 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 20:48:27,907 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 20:48:27,907 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 20:48:27,907 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 20:48:27,908 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:48:03" (3/4) ... [2019-11-15 20:48:27,918 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-15 20:48:27,938 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2019-11-15 20:48:27,939 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2019-11-15 20:48:27,944 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2019-11-15 20:48:27,945 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-15 20:48:27,945 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-15 20:48:27,995 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c9afa5cb-22e8-40e5-ad74-47cca66a8b1f/bin/uautomizer/witness.graphml [2019-11-15 20:48:27,995 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 20:48:27,998 INFO L168 Benchmark]: Toolchain (without parser) took 25628.53 ms. Allocated memory was 1.0 GB in the beginning and 1.5 GB in the end (delta: 499.6 MB). Free memory was 944.7 MB in the beginning and 1.4 GB in the end (delta: -427.0 MB). Peak memory consumption was 72.6 MB. Max. memory is 11.5 GB. [2019-11-15 20:48:27,999 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:48:27,999 INFO L168 Benchmark]: CACSL2BoogieTranslator took 726.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -150.1 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2019-11-15 20:48:28,000 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-11-15 20:48:28,000 INFO L168 Benchmark]: Boogie Preprocessor took 40.83 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:48:28,001 INFO L168 Benchmark]: RCFGBuilder took 518.81 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: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 11.5 GB. [2019-11-15 20:48:28,001 INFO L168 Benchmark]: TraceAbstraction took 24169.34 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 378.0 MB). Free memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: -322.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 11.5 GB. [2019-11-15 20:48:28,002 INFO L168 Benchmark]: Witness Printer took 88.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 11.5 GB. [2019-11-15 20:48:28,004 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 726.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -150.1 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 79.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.83 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 518.81 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: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 24169.34 ms. Allocated memory was 1.2 GB in the beginning and 1.5 GB in the end (delta: 378.0 MB). Free memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: -322.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 11.5 GB. * Witness Printer took 88.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 703]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 64 locations, 1 error locations. Result: SAFE, OverallTime: 24.0s, OverallIterations: 26, TraceHistogramMax: 11, AutomataDifference: 9.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1768 SDtfs, 7266 SDslu, 9967 SDs, 0 SdLazy, 2089 SolverSat, 941 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2035 GetRequests, 1401 SyntacticMatches, 0 SemanticMatches, 634 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3536 ImplicationChecksByTransitivity, 10.6s 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 DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 26 MinimizatonAttempts, 2903 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 6.6s InterpolantComputationTime, 2859 NumberOfCodeBlocks, 2859 NumberOfCodeBlocksAsserted, 105 NumberOfCheckSat, 2812 ConstructedInterpolants, 0 QuantifiedInterpolants, 583772 SizeOfPredicates, 310 NumberOfNonLiveVariables, 3376 ConjunctsInSsa, 371 ConjunctsInUnsatCore, 47 InterpolantComputations, 7 PerfectInterpolantSequences, 1221/5224 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...