./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/triangular-longest-2.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_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/triangular-longest-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/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 faab412b2ab361cad3ea824ae769b15468801bfa ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-16 00:13:45,920 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-16 00:13:45,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-16 00:13:45,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-16 00:13:45,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-16 00:13:45,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-16 00:13:45,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-16 00:13:45,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-16 00:13:45,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-16 00:13:45,957 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-16 00:13:45,958 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-16 00:13:45,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-16 00:13:45,960 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-16 00:13:45,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-16 00:13:45,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-16 00:13:45,964 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-16 00:13:45,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-16 00:13:45,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-16 00:13:45,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-16 00:13:45,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-16 00:13:45,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-16 00:13:45,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-16 00:13:45,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-16 00:13:45,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-16 00:13:45,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-16 00:13:45,982 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-16 00:13:45,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-16 00:13:45,984 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-16 00:13:45,984 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-16 00:13:45,985 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-16 00:13:45,985 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-16 00:13:45,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-16 00:13:45,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-16 00:13:45,987 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-16 00:13:45,988 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-16 00:13:45,988 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-16 00:13:45,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-16 00:13:45,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-16 00:13:45,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-16 00:13:45,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-16 00:13:45,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-16 00:13:45,992 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-16 00:13:46,017 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-16 00:13:46,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-16 00:13:46,018 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-16 00:13:46,018 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-16 00:13:46,018 INFO L138 SettingsManager]: * Use SBE=true [2019-11-16 00:13:46,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-16 00:13:46,019 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-16 00:13:46,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-16 00:13:46,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-16 00:13:46,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-16 00:13:46,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-16 00:13:46,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-16 00:13:46,020 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-16 00:13:46,020 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-16 00:13:46,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-16 00:13:46,021 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-16 00:13:46,021 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-16 00:13:46,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-16 00:13:46,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-16 00:13:46,022 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-16 00:13:46,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-16 00:13:46,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-16 00:13:46,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-16 00:13:46,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-16 00:13:46,023 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-16 00:13:46,023 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-16 00:13:46,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-16 00:13:46,023 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-16 00:13:46,024 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_161ba38b-3054-4e32-a25a-7d790c4ceeed/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 -> faab412b2ab361cad3ea824ae769b15468801bfa [2019-11-16 00:13:46,068 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-16 00:13:46,080 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-16 00:13:46,084 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-16 00:13:46,085 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-16 00:13:46,085 INFO L275 PluginConnector]: CDTParser initialized [2019-11-16 00:13:46,087 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/../../sv-benchmarks/c/pthread/triangular-longest-2.i [2019-11-16 00:13:46,146 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/data/a6be2ac1e/daf81ebbe5394aaba0cc02069f8ab9ae/FLAG5df3cf861 [2019-11-16 00:13:46,634 INFO L306 CDTParser]: Found 1 translation units. [2019-11-16 00:13:46,634 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/sv-benchmarks/c/pthread/triangular-longest-2.i [2019-11-16 00:13:46,653 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/data/a6be2ac1e/daf81ebbe5394aaba0cc02069f8ab9ae/FLAG5df3cf861 [2019-11-16 00:13:46,948 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/data/a6be2ac1e/daf81ebbe5394aaba0cc02069f8ab9ae [2019-11-16 00:13:46,950 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-16 00:13:46,952 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-16 00:13:46,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-16 00:13:46,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-16 00:13:46,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-16 00:13:46,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:13:46" (1/1) ... [2019-11-16 00:13:46,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2addda9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:46, skipping insertion in model container [2019-11-16 00:13:46,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:13:46" (1/1) ... [2019-11-16 00:13:46,973 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-16 00:13:47,029 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-16 00:13:47,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:13:47,465 INFO L188 MainTranslator]: Completed pre-run [2019-11-16 00:13:47,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:13:47,590 INFO L192 MainTranslator]: Completed translation [2019-11-16 00:13:47,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:47 WrapperNode [2019-11-16 00:13:47,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-16 00:13:47,591 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-16 00:13:47,592 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-16 00:13:47,592 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-16 00:13:47,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:47" (1/1) ... [2019-11-16 00:13:47,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:47" (1/1) ... [2019-11-16 00:13:47,637 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-16 00:13:47,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-16 00:13:47,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-16 00:13:47,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-16 00:13:47,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:47" (1/1) ... [2019-11-16 00:13:47,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:47" (1/1) ... [2019-11-16 00:13:47,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:47" (1/1) ... [2019-11-16 00:13:47,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:47" (1/1) ... [2019-11-16 00:13:47,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:47" (1/1) ... [2019-11-16 00:13:47,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:47" (1/1) ... [2019-11-16 00:13:47,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:47" (1/1) ... [2019-11-16 00:13:47,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-16 00:13:47,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-16 00:13:47,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-16 00:13:47,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-16 00:13:47,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/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 [2019-11-16 00:13:47,731 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2019-11-16 00:13:47,732 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2019-11-16 00:13:47,732 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2019-11-16 00:13:47,732 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2019-11-16 00:13:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-16 00:13:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-16 00:13:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-16 00:13:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-16 00:13:47,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-16 00:13:47,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-16 00:13:47,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-16 00:13:47,738 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-16 00:13:48,114 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-16 00:13:48,115 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-16 00:13:48,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:13:48 BoogieIcfgContainer [2019-11-16 00:13:48,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-16 00:13:48,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-16 00:13:48,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-16 00:13:48,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-16 00:13:48,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:13:46" (1/3) ... [2019-11-16 00:13:48,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a6170d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:13:48, skipping insertion in model container [2019-11-16 00:13:48,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:13:47" (2/3) ... [2019-11-16 00:13:48,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a6170d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:13:48, skipping insertion in model container [2019-11-16 00:13:48,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:13:48" (3/3) ... [2019-11-16 00:13:48,123 INFO L109 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2019-11-16 00:13:48,150 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:13:48,151 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:13:48,151 WARN L315 ript$VariableManager]: TermVariabe Thread1_t1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:13:48,151 WARN L315 ript$VariableManager]: TermVariabe Thread1_t1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:13:48,151 WARN L315 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:13:48,152 WARN L315 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:13:48,152 WARN L315 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:13:48,152 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:13:48,152 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:13:48,153 WARN L315 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:13:48,153 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:13:48,153 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:13:48,153 WARN L315 ript$VariableManager]: TermVariabe Thread1_t1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:13:48,154 WARN L315 ript$VariableManager]: TermVariabe |Thread1_t1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:13:48,154 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:13:48,154 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:13:48,154 WARN L315 ript$VariableManager]: TermVariabe Thread0_t2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:13:48,154 WARN L315 ript$VariableManager]: TermVariabe Thread0_t2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:13:48,155 WARN L315 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:13:48,155 WARN L315 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:13:48,155 WARN L315 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:13:48,156 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:13:48,156 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:13:48,156 WARN L315 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:13:48,156 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:13:48,156 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:13:48,157 WARN L315 ript$VariableManager]: TermVariabe Thread0_t2_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:13:48,157 WARN L315 ript$VariableManager]: TermVariabe |Thread0_t2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:13:48,166 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-16 00:13:48,166 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-16 00:13:48,173 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-16 00:13:48,183 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-16 00:13:48,201 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-16 00:13:48,201 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-16 00:13:48,202 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-16 00:13:48,202 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-16 00:13:48,202 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-16 00:13:48,202 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-16 00:13:48,202 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-16 00:13:48,202 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-16 00:13:48,211 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 48 transitions [2019-11-16 00:13:48,287 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1012 states. [2019-11-16 00:13:48,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1012 states. [2019-11-16 00:13:48,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-16 00:13:48,298 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:13:48,299 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:13:48,300 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:13:48,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:13:48,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1918718107, now seen corresponding path program 1 times [2019-11-16 00:13:48,313 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:13:48,314 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864649520] [2019-11-16 00:13:48,314 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:48,314 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:48,314 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:13:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:13:48,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:13:48,620 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864649520] [2019-11-16 00:13:48,621 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:13:48,621 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-16 00:13:48,622 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889871891] [2019-11-16 00:13:48,626 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-16 00:13:48,626 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:13:48,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-16 00:13:48,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:13:48,642 INFO L87 Difference]: Start difference. First operand 1012 states. Second operand 5 states. [2019-11-16 00:13:48,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:13:48,783 INFO L93 Difference]: Finished difference Result 1411 states and 4051 transitions. [2019-11-16 00:13:48,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-16 00:13:48,784 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-11-16 00:13:48,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:13:48,805 INFO L225 Difference]: With dead ends: 1411 [2019-11-16 00:13:48,805 INFO L226 Difference]: Without dead ends: 322 [2019-11-16 00:13:48,807 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 [2019-11-16 00:13:48,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2019-11-16 00:13:48,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2019-11-16 00:13:48,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2019-11-16 00:13:48,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 820 transitions. [2019-11-16 00:13:48,881 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 820 transitions. Word has length 19 [2019-11-16 00:13:48,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:13:48,881 INFO L462 AbstractCegarLoop]: Abstraction has 322 states and 820 transitions. [2019-11-16 00:13:48,881 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-16 00:13:48,881 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 820 transitions. [2019-11-16 00:13:48,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-16 00:13:48,883 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:13:48,883 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] [2019-11-16 00:13:48,883 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:13:48,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:13:48,884 INFO L82 PathProgramCache]: Analyzing trace with hash 160945497, now seen corresponding path program 1 times [2019-11-16 00:13:48,884 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:13:48,884 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046220813] [2019-11-16 00:13:48,884 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:48,885 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:48,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:13:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:13:49,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:13:49,014 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046220813] [2019-11-16 00:13:49,014 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:13:49,015 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-16 00:13:49,015 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91498460] [2019-11-16 00:13:49,016 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-16 00:13:49,016 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:13:49,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-16 00:13:49,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:13:49,017 INFO L87 Difference]: Start difference. First operand 322 states and 820 transitions. Second operand 5 states. [2019-11-16 00:13:49,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:13:49,123 INFO L93 Difference]: Finished difference Result 411 states and 998 transitions. [2019-11-16 00:13:49,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-16 00:13:49,126 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-11-16 00:13:49,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:13:49,129 INFO L225 Difference]: With dead ends: 411 [2019-11-16 00:13:49,129 INFO L226 Difference]: Without dead ends: 290 [2019-11-16 00:13:49,130 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 [2019-11-16 00:13:49,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2019-11-16 00:13:49,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2019-11-16 00:13:49,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2019-11-16 00:13:49,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 714 transitions. [2019-11-16 00:13:49,149 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 714 transitions. Word has length 22 [2019-11-16 00:13:49,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:13:49,149 INFO L462 AbstractCegarLoop]: Abstraction has 290 states and 714 transitions. [2019-11-16 00:13:49,149 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-16 00:13:49,150 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 714 transitions. [2019-11-16 00:13:49,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-16 00:13:49,151 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:13:49,151 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] [2019-11-16 00:13:49,151 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:13:49,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:13:49,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1011235803, now seen corresponding path program 1 times [2019-11-16 00:13:49,152 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:13:49,152 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913219465] [2019-11-16 00:13:49,152 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:49,153 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:49,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:13:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:13:49,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:13:49,267 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913219465] [2019-11-16 00:13:49,268 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:13:49,268 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-16 00:13:49,268 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063697818] [2019-11-16 00:13:49,268 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-16 00:13:49,268 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:13:49,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-16 00:13:49,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-16 00:13:49,269 INFO L87 Difference]: Start difference. First operand 290 states and 714 transitions. Second operand 6 states. [2019-11-16 00:13:49,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:13:49,415 INFO L93 Difference]: Finished difference Result 535 states and 1302 transitions. [2019-11-16 00:13:49,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-16 00:13:49,416 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2019-11-16 00:13:49,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:13:49,419 INFO L225 Difference]: With dead ends: 535 [2019-11-16 00:13:49,419 INFO L226 Difference]: Without dead ends: 325 [2019-11-16 00:13:49,420 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 [2019-11-16 00:13:49,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2019-11-16 00:13:49,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2019-11-16 00:13:49,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2019-11-16 00:13:49,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 784 transitions. [2019-11-16 00:13:49,436 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 784 transitions. Word has length 25 [2019-11-16 00:13:49,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:13:49,437 INFO L462 AbstractCegarLoop]: Abstraction has 325 states and 784 transitions. [2019-11-16 00:13:49,437 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-16 00:13:49,437 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 784 transitions. [2019-11-16 00:13:49,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-16 00:13:49,438 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:13:49,439 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] [2019-11-16 00:13:49,439 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:13:49,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:13:49,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1020173103, now seen corresponding path program 2 times [2019-11-16 00:13:49,440 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:13:49,440 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584865293] [2019-11-16 00:13:49,440 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:49,440 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:49,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:13:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:13:49,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:13:49,555 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584865293] [2019-11-16 00:13:49,555 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:13:49,555 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-16 00:13:49,555 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069232249] [2019-11-16 00:13:49,556 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-16 00:13:49,556 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:13:49,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-16 00:13:49,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-16 00:13:49,557 INFO L87 Difference]: Start difference. First operand 325 states and 784 transitions. Second operand 6 states. [2019-11-16 00:13:49,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:13:49,772 INFO L93 Difference]: Finished difference Result 472 states and 1127 transitions. [2019-11-16 00:13:49,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-16 00:13:49,773 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2019-11-16 00:13:49,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:13:49,776 INFO L225 Difference]: With dead ends: 472 [2019-11-16 00:13:49,776 INFO L226 Difference]: Without dead ends: 335 [2019-11-16 00:13:49,777 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 [2019-11-16 00:13:49,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2019-11-16 00:13:49,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 300. [2019-11-16 00:13:49,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2019-11-16 00:13:49,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 734 transitions. [2019-11-16 00:13:49,789 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 734 transitions. Word has length 25 [2019-11-16 00:13:49,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:13:49,790 INFO L462 AbstractCegarLoop]: Abstraction has 300 states and 734 transitions. [2019-11-16 00:13:49,790 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-16 00:13:49,790 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 734 transitions. [2019-11-16 00:13:49,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-16 00:13:49,792 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:13:49,792 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] [2019-11-16 00:13:49,793 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:13:49,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:13:49,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1553903636, now seen corresponding path program 1 times [2019-11-16 00:13:49,793 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:13:49,794 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701580668] [2019-11-16 00:13:49,794 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:49,794 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:49,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:13:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:13:49,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:13:49,920 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701580668] [2019-11-16 00:13:49,920 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329323013] [2019-11-16 00:13:49,920 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/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 [2019-11-16 00:13:49,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:13:50,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-16 00:13:50,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:13:50,050 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:50,051 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:50,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:13:50,059 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:13:50,059 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-11-16 00:13:50,060 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556373635] [2019-11-16 00:13:50,060 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-16 00:13:50,060 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:13:50,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-16 00:13:50,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-16 00:13:50,061 INFO L87 Difference]: Start difference. First operand 300 states and 734 transitions. Second operand 8 states. [2019-11-16 00:13:50,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:13:50,211 INFO L93 Difference]: Finished difference Result 580 states and 1392 transitions. [2019-11-16 00:13:50,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-16 00:13:50,213 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2019-11-16 00:13:50,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:13:50,216 INFO L225 Difference]: With dead ends: 580 [2019-11-16 00:13:50,216 INFO L226 Difference]: Without dead ends: 367 [2019-11-16 00:13:50,217 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 [2019-11-16 00:13:50,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2019-11-16 00:13:50,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 313. [2019-11-16 00:13:50,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2019-11-16 00:13:50,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 760 transitions. [2019-11-16 00:13:50,247 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 760 transitions. Word has length 29 [2019-11-16 00:13:50,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:13:50,248 INFO L462 AbstractCegarLoop]: Abstraction has 313 states and 760 transitions. [2019-11-16 00:13:50,248 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-16 00:13:50,248 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 760 transitions. [2019-11-16 00:13:50,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-16 00:13:50,250 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:13:50,250 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] [2019-11-16 00:13:50,450 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:13:50,450 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:13:50,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:13:50,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1611267919, now seen corresponding path program 1 times [2019-11-16 00:13:50,451 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:13:50,451 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904116322] [2019-11-16 00:13:50,451 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:50,451 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:50,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:13:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:13:50,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:13:50,610 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904116322] [2019-11-16 00:13:50,610 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938607768] [2019-11-16 00:13:50,610 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/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 [2019-11-16 00:13:50,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:13:50,698 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-16 00:13:50,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:13:50,742 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:50,744 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:50,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:13:50,748 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:13:50,749 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-11-16 00:13:50,749 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081255837] [2019-11-16 00:13:50,749 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-16 00:13:50,750 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:13:50,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-16 00:13:50,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-11-16 00:13:50,750 INFO L87 Difference]: Start difference. First operand 313 states and 760 transitions. Second operand 9 states. [2019-11-16 00:13:50,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:13:50,946 INFO L93 Difference]: Finished difference Result 628 states and 1488 transitions. [2019-11-16 00:13:50,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-16 00:13:50,947 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2019-11-16 00:13:50,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:13:50,952 INFO L225 Difference]: With dead ends: 628 [2019-11-16 00:13:50,952 INFO L226 Difference]: Without dead ends: 439 [2019-11-16 00:13:50,952 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 [2019-11-16 00:13:50,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2019-11-16 00:13:50,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 411. [2019-11-16 00:13:50,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 411 states. [2019-11-16 00:13:50,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 960 transitions. [2019-11-16 00:13:50,970 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 960 transitions. Word has length 33 [2019-11-16 00:13:50,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:13:50,970 INFO L462 AbstractCegarLoop]: Abstraction has 411 states and 960 transitions. [2019-11-16 00:13:50,970 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-16 00:13:50,970 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 960 transitions. [2019-11-16 00:13:50,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-16 00:13:50,972 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:13:50,972 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] [2019-11-16 00:13:51,175 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:13:51,176 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:13:51,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:13:51,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1346369780, now seen corresponding path program 2 times [2019-11-16 00:13:51,176 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:13:51,176 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230258823] [2019-11-16 00:13:51,177 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:51,177 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:51,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:13:51,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:13:51,357 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:13:51,357 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230258823] [2019-11-16 00:13:51,357 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347898849] [2019-11-16 00:13:51,357 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/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 [2019-11-16 00:13:51,435 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:13:51,436 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:13:51,437 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-16 00:13:51,439 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:13:51,471 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:51,471 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:51,473 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:51,476 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:13:51,476 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:13:51,476 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-11-16 00:13:51,476 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076117898] [2019-11-16 00:13:51,477 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-16 00:13:51,477 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:13:51,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-16 00:13:51,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-16 00:13:51,477 INFO L87 Difference]: Start difference. First operand 411 states and 960 transitions. Second operand 10 states. [2019-11-16 00:13:51,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:13:51,661 INFO L93 Difference]: Finished difference Result 668 states and 1568 transitions. [2019-11-16 00:13:51,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-16 00:13:51,661 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2019-11-16 00:13:51,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:13:51,665 INFO L225 Difference]: With dead ends: 668 [2019-11-16 00:13:51,665 INFO L226 Difference]: Without dead ends: 479 [2019-11-16 00:13:51,666 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2019-11-16 00:13:51,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2019-11-16 00:13:51,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 369. [2019-11-16 00:13:51,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 369 states. [2019-11-16 00:13:51,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 872 transitions. [2019-11-16 00:13:51,677 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 872 transitions. Word has length 37 [2019-11-16 00:13:51,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:13:51,678 INFO L462 AbstractCegarLoop]: Abstraction has 369 states and 872 transitions. [2019-11-16 00:13:51,678 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-16 00:13:51,678 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 872 transitions. [2019-11-16 00:13:51,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-16 00:13:51,679 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:13:51,679 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 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] [2019-11-16 00:13:51,882 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:13:51,883 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:13:51,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:13:51,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1075865071, now seen corresponding path program 3 times [2019-11-16 00:13:51,884 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:13:51,884 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258187920] [2019-11-16 00:13:51,884 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:51,884 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:51,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:13:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:13:51,990 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-16 00:13:51,991 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258187920] [2019-11-16 00:13:51,991 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112204865] [2019-11-16 00:13:51,991 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/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 [2019-11-16 00:13:52,054 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-16 00:13:52,054 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:13:52,055 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-16 00:13:52,057 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:13:52,088 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:52,089 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:52,090 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:52,093 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-16 00:13:52,094 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:13:52,094 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2019-11-16 00:13:52,094 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037211751] [2019-11-16 00:13:52,095 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-16 00:13:52,095 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:13:52,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-16 00:13:52,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-16 00:13:52,095 INFO L87 Difference]: Start difference. First operand 369 states and 872 transitions. Second operand 10 states. [2019-11-16 00:13:52,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:13:52,287 INFO L93 Difference]: Finished difference Result 740 states and 1712 transitions. [2019-11-16 00:13:52,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-16 00:13:52,287 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2019-11-16 00:13:52,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:13:52,292 INFO L225 Difference]: With dead ends: 740 [2019-11-16 00:13:52,292 INFO L226 Difference]: Without dead ends: 539 [2019-11-16 00:13:52,293 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2019-11-16 00:13:52,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2019-11-16 00:13:52,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 455. [2019-11-16 00:13:52,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2019-11-16 00:13:52,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 1044 transitions. [2019-11-16 00:13:52,306 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 1044 transitions. Word has length 41 [2019-11-16 00:13:52,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:13:52,307 INFO L462 AbstractCegarLoop]: Abstraction has 455 states and 1044 transitions. [2019-11-16 00:13:52,307 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-16 00:13:52,307 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 1044 transitions. [2019-11-16 00:13:52,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-16 00:13:52,310 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:13:52,310 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] [2019-11-16 00:13:52,513 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:13:52,513 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:13:52,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:13:52,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1827029934, now seen corresponding path program 4 times [2019-11-16 00:13:52,514 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:13:52,514 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439028102] [2019-11-16 00:13:52,514 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:52,514 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:52,514 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:13:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:13:52,679 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:13:52,680 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439028102] [2019-11-16 00:13:52,680 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488805504] [2019-11-16 00:13:52,680 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/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 [2019-11-16 00:13:52,758 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-16 00:13:52,758 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:13:52,759 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-16 00:13:52,761 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:13:52,790 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:52,791 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:52,792 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:52,795 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:13:52,796 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:13:52,796 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-11-16 00:13:52,796 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979334890] [2019-11-16 00:13:52,797 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-16 00:13:52,798 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:13:52,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-16 00:13:52,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-11-16 00:13:52,799 INFO L87 Difference]: Start difference. First operand 455 states and 1044 transitions. Second operand 12 states. [2019-11-16 00:13:53,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:13:53,065 INFO L93 Difference]: Finished difference Result 866 states and 2013 transitions. [2019-11-16 00:13:53,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-16 00:13:53,067 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2019-11-16 00:13:53,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:13:53,071 INFO L225 Difference]: With dead ends: 866 [2019-11-16 00:13:53,071 INFO L226 Difference]: Without dead ends: 571 [2019-11-16 00:13:53,072 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2019-11-16 00:13:53,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2019-11-16 00:13:53,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 487. [2019-11-16 00:13:53,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2019-11-16 00:13:53,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 1108 transitions. [2019-11-16 00:13:53,087 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 1108 transitions. Word has length 45 [2019-11-16 00:13:53,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:13:53,089 INFO L462 AbstractCegarLoop]: Abstraction has 487 states and 1108 transitions. [2019-11-16 00:13:53,089 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-16 00:13:53,089 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 1108 transitions. [2019-11-16 00:13:53,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-16 00:13:53,091 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:13:53,091 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] [2019-11-16 00:13:53,294 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:13:53,294 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:13:53,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:13:53,294 INFO L82 PathProgramCache]: Analyzing trace with hash 815439700, now seen corresponding path program 5 times [2019-11-16 00:13:53,295 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:13:53,295 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861515916] [2019-11-16 00:13:53,295 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:53,295 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:53,295 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:13:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:13:53,438 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-16 00:13:53,439 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861515916] [2019-11-16 00:13:53,439 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298692369] [2019-11-16 00:13:53,439 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/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 [2019-11-16 00:13:53,514 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2019-11-16 00:13:53,514 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:13:53,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-16 00:13:53,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:13:53,546 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:53,547 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:53,548 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:53,553 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-16 00:13:53,553 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:13:53,553 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2019-11-16 00:13:53,553 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546472449] [2019-11-16 00:13:53,554 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-16 00:13:53,554 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:13:53,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-16 00:13:53,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-11-16 00:13:53,554 INFO L87 Difference]: Start difference. First operand 487 states and 1108 transitions. Second operand 11 states. [2019-11-16 00:13:53,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:13:53,738 INFO L93 Difference]: Finished difference Result 674 states and 1531 transitions. [2019-11-16 00:13:53,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-16 00:13:53,739 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2019-11-16 00:13:53,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:13:53,742 INFO L225 Difference]: With dead ends: 674 [2019-11-16 00:13:53,742 INFO L226 Difference]: Without dead ends: 531 [2019-11-16 00:13:53,743 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2019-11-16 00:13:53,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2019-11-16 00:13:53,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 491. [2019-11-16 00:13:53,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2019-11-16 00:13:53,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 1120 transitions. [2019-11-16 00:13:53,756 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 1120 transitions. Word has length 45 [2019-11-16 00:13:53,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:13:53,757 INFO L462 AbstractCegarLoop]: Abstraction has 491 states and 1120 transitions. [2019-11-16 00:13:53,757 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-16 00:13:53,757 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 1120 transitions. [2019-11-16 00:13:53,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-16 00:13:53,759 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:13:53,759 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] [2019-11-16 00:13:53,963 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:13:53,969 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:13:53,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:13:53,969 INFO L82 PathProgramCache]: Analyzing trace with hash 234512852, now seen corresponding path program 6 times [2019-11-16 00:13:53,969 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:13:53,969 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929334929] [2019-11-16 00:13:53,969 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:53,970 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:53,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:13:53,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:13:54,086 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:13:54,087 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929334929] [2019-11-16 00:13:54,087 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677920645] [2019-11-16 00:13:54,087 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/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 [2019-11-16 00:13:54,152 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-11-16 00:13:54,152 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:13:54,153 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-16 00:13:54,155 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:13:54,182 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:54,183 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:54,184 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:54,189 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:13:54,189 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:13:54,190 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-11-16 00:13:54,190 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049117341] [2019-11-16 00:13:54,190 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-16 00:13:54,191 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:13:54,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-16 00:13:54,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-11-16 00:13:54,191 INFO L87 Difference]: Start difference. First operand 491 states and 1120 transitions. Second operand 12 states. [2019-11-16 00:13:54,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:13:54,472 INFO L93 Difference]: Finished difference Result 748 states and 1728 transitions. [2019-11-16 00:13:54,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-16 00:13:54,472 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2019-11-16 00:13:54,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:13:54,476 INFO L225 Difference]: With dead ends: 748 [2019-11-16 00:13:54,476 INFO L226 Difference]: Without dead ends: 535 [2019-11-16 00:13:54,477 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2019-11-16 00:13:54,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2019-11-16 00:13:54,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 523. [2019-11-16 00:13:54,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 523 states. [2019-11-16 00:13:54,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 1184 transitions. [2019-11-16 00:13:54,495 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 1184 transitions. Word has length 45 [2019-11-16 00:13:54,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:13:54,495 INFO L462 AbstractCegarLoop]: Abstraction has 523 states and 1184 transitions. [2019-11-16 00:13:54,495 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-16 00:13:54,496 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 1184 transitions. [2019-11-16 00:13:54,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-16 00:13:54,497 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:13:54,497 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] [2019-11-16 00:13:54,700 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:13:54,701 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:13:54,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:13:54,701 INFO L82 PathProgramCache]: Analyzing trace with hash 178573198, now seen corresponding path program 7 times [2019-11-16 00:13:54,701 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:13:54,701 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500645737] [2019-11-16 00:13:54,701 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:54,702 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:54,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:13:54,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:13:54,872 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:13:54,873 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500645737] [2019-11-16 00:13:54,873 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466237684] [2019-11-16 00:13:54,873 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/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 [2019-11-16 00:13:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:13:54,964 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-16 00:13:54,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:13:55,008 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:55,009 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:55,010 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:55,013 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:13:55,013 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:13:55,014 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2019-11-16 00:13:55,014 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636309706] [2019-11-16 00:13:55,014 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-16 00:13:55,014 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:13:55,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-16 00:13:55,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2019-11-16 00:13:55,015 INFO L87 Difference]: Start difference. First operand 523 states and 1184 transitions. Second operand 14 states. [2019-11-16 00:13:55,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:13:55,356 INFO L93 Difference]: Finished difference Result 894 states and 2069 transitions. [2019-11-16 00:13:55,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-16 00:13:55,360 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2019-11-16 00:13:55,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:13:55,364 INFO L225 Difference]: With dead ends: 894 [2019-11-16 00:13:55,364 INFO L226 Difference]: Without dead ends: 599 [2019-11-16 00:13:55,364 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=180, Invalid=470, Unknown=0, NotChecked=0, Total=650 [2019-11-16 00:13:55,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2019-11-16 00:13:55,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 555. [2019-11-16 00:13:55,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 555 states. [2019-11-16 00:13:55,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 1248 transitions. [2019-11-16 00:13:55,379 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 1248 transitions. Word has length 53 [2019-11-16 00:13:55,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:13:55,379 INFO L462 AbstractCegarLoop]: Abstraction has 555 states and 1248 transitions. [2019-11-16 00:13:55,380 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-16 00:13:55,380 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 1248 transitions. [2019-11-16 00:13:55,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-16 00:13:55,381 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:13:55,381 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] [2019-11-16 00:13:55,585 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:13:55,586 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:13:55,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:13:55,586 INFO L82 PathProgramCache]: Analyzing trace with hash -89265484, now seen corresponding path program 8 times [2019-11-16 00:13:55,586 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:13:55,586 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958825467] [2019-11-16 00:13:55,586 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:55,586 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:55,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:13:55,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:13:55,752 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:13:55,752 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958825467] [2019-11-16 00:13:55,752 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971622771] [2019-11-16 00:13:55,752 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/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 [2019-11-16 00:13:55,809 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:13:55,809 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:13:55,810 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-16 00:13:55,812 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:13:55,843 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:55,844 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:55,845 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:55,849 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:13:55,849 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:13:55,849 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2019-11-16 00:13:55,849 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101040622] [2019-11-16 00:13:55,850 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-16 00:13:55,850 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:13:55,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-16 00:13:55,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2019-11-16 00:13:55,850 INFO L87 Difference]: Start difference. First operand 555 states and 1248 transitions. Second operand 14 states. [2019-11-16 00:13:56,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:13:56,144 INFO L93 Difference]: Finished difference Result 840 states and 1912 transitions. [2019-11-16 00:13:56,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-16 00:13:56,145 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2019-11-16 00:13:56,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:13:56,149 INFO L225 Difference]: With dead ends: 840 [2019-11-16 00:13:56,149 INFO L226 Difference]: Without dead ends: 651 [2019-11-16 00:13:56,150 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2019-11-16 00:13:56,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2019-11-16 00:13:56,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 583. [2019-11-16 00:13:56,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 583 states. [2019-11-16 00:13:56,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 1300 transitions. [2019-11-16 00:13:56,165 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 1300 transitions. Word has length 53 [2019-11-16 00:13:56,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:13:56,166 INFO L462 AbstractCegarLoop]: Abstraction has 583 states and 1300 transitions. [2019-11-16 00:13:56,166 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-16 00:13:56,166 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 1300 transitions. [2019-11-16 00:13:56,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-11-16 00:13:56,167 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:13:56,168 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] [2019-11-16 00:13:56,371 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:13:56,373 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:13:56,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:13:56,373 INFO L82 PathProgramCache]: Analyzing trace with hash -292979858, now seen corresponding path program 9 times [2019-11-16 00:13:56,373 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:13:56,373 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65349753] [2019-11-16 00:13:56,373 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:56,373 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:56,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:13:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:13:56,533 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:13:56,533 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65349753] [2019-11-16 00:13:56,533 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780885426] [2019-11-16 00:13:56,533 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/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 [2019-11-16 00:13:56,606 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2019-11-16 00:13:56,606 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:13:56,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-16 00:13:56,609 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:13:56,640 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:56,641 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:56,642 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:56,646 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:13:56,647 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:13:56,647 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2019-11-16 00:13:56,647 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399075325] [2019-11-16 00:13:56,647 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-16 00:13:56,647 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:13:56,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-16 00:13:56,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2019-11-16 00:13:56,648 INFO L87 Difference]: Start difference. First operand 583 states and 1300 transitions. Second operand 16 states. [2019-11-16 00:13:57,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:13:57,006 INFO L93 Difference]: Finished difference Result 994 states and 2269 transitions. [2019-11-16 00:13:57,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-16 00:13:57,007 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 61 [2019-11-16 00:13:57,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:13:57,012 INFO L225 Difference]: With dead ends: 994 [2019-11-16 00:13:57,012 INFO L226 Difference]: Without dead ends: 699 [2019-11-16 00:13:57,012 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2019-11-16 00:13:57,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2019-11-16 00:13:57,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 615. [2019-11-16 00:13:57,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2019-11-16 00:13:57,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 1364 transitions. [2019-11-16 00:13:57,030 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 1364 transitions. Word has length 61 [2019-11-16 00:13:57,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:13:57,030 INFO L462 AbstractCegarLoop]: Abstraction has 615 states and 1364 transitions. [2019-11-16 00:13:57,030 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-16 00:13:57,030 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 1364 transitions. [2019-11-16 00:13:57,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-11-16 00:13:57,032 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:13:57,032 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] [2019-11-16 00:13:57,235 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:13:57,241 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:13:57,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:13:57,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1109733100, now seen corresponding path program 10 times [2019-11-16 00:13:57,241 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:13:57,241 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609629608] [2019-11-16 00:13:57,241 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:57,242 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:57,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:13:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:13:57,409 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-16 00:13:57,410 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609629608] [2019-11-16 00:13:57,410 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513226254] [2019-11-16 00:13:57,410 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/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 [2019-11-16 00:13:57,490 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-16 00:13:57,490 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:13:57,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-16 00:13:57,493 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:13:57,515 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:57,515 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:57,516 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:57,521 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-16 00:13:57,521 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:13:57,521 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2019-11-16 00:13:57,522 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144285458] [2019-11-16 00:13:57,522 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-16 00:13:57,522 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:13:57,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-16 00:13:57,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2019-11-16 00:13:57,523 INFO L87 Difference]: Start difference. First operand 615 states and 1364 transitions. Second operand 15 states. [2019-11-16 00:13:57,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:13:57,752 INFO L93 Difference]: Finished difference Result 916 states and 2064 transitions. [2019-11-16 00:13:57,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-16 00:13:57,757 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 61 [2019-11-16 00:13:57,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:13:57,761 INFO L225 Difference]: With dead ends: 916 [2019-11-16 00:13:57,761 INFO L226 Difference]: Without dead ends: 715 [2019-11-16 00:13:57,762 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=502, Unknown=0, NotChecked=0, Total=702 [2019-11-16 00:13:57,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2019-11-16 00:13:57,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 468. [2019-11-16 00:13:57,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2019-11-16 00:13:57,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1070 transitions. [2019-11-16 00:13:57,778 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1070 transitions. Word has length 61 [2019-11-16 00:13:57,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:13:57,779 INFO L462 AbstractCegarLoop]: Abstraction has 468 states and 1070 transitions. [2019-11-16 00:13:57,779 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-16 00:13:57,779 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1070 transitions. [2019-11-16 00:13:57,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-11-16 00:13:57,780 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:13:57,781 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] [2019-11-16 00:13:57,985 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:13:57,985 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:13:57,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:13:57,986 INFO L82 PathProgramCache]: Analyzing trace with hash -57130703, now seen corresponding path program 11 times [2019-11-16 00:13:57,986 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:13:57,986 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137539917] [2019-11-16 00:13:57,986 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:57,986 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:57,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:13:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:13:58,160 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:13:58,160 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137539917] [2019-11-16 00:13:58,160 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652151126] [2019-11-16 00:13:58,161 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/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 [2019-11-16 00:13:58,229 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-11-16 00:13:58,229 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:13:58,231 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-16 00:13:58,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:13:58,261 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:58,262 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:58,263 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:58,271 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:13:58,271 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:13:58,271 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2019-11-16 00:13:58,271 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000939079] [2019-11-16 00:13:58,272 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-16 00:13:58,272 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:13:58,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-16 00:13:58,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2019-11-16 00:13:58,273 INFO L87 Difference]: Start difference. First operand 468 states and 1070 transitions. Second operand 17 states. [2019-11-16 00:13:58,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:13:58,630 INFO L93 Difference]: Finished difference Result 1014 states and 2309 transitions. [2019-11-16 00:13:58,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-16 00:13:58,631 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 65 [2019-11-16 00:13:58,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:13:58,634 INFO L225 Difference]: With dead ends: 1014 [2019-11-16 00:13:58,634 INFO L226 Difference]: Without dead ends: 719 [2019-11-16 00:13:58,635 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 [2019-11-16 00:13:58,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2019-11-16 00:13:58,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 481. [2019-11-16 00:13:58,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2019-11-16 00:13:58,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 1096 transitions. [2019-11-16 00:13:58,647 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 1096 transitions. Word has length 65 [2019-11-16 00:13:58,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:13:58,648 INFO L462 AbstractCegarLoop]: Abstraction has 481 states and 1096 transitions. [2019-11-16 00:13:58,648 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-16 00:13:58,648 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 1096 transitions. [2019-11-16 00:13:58,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-11-16 00:13:58,649 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:13:58,649 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] [2019-11-16 00:13:58,852 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:13:58,852 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:13:58,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:13:58,853 INFO L82 PathProgramCache]: Analyzing trace with hash 544491342, now seen corresponding path program 12 times [2019-11-16 00:13:58,853 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:13:58,853 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089509178] [2019-11-16 00:13:58,853 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:58,853 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:58,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:13:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:13:59,029 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:13:59,030 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089509178] [2019-11-16 00:13:59,030 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350938803] [2019-11-16 00:13:59,030 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/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 [2019-11-16 00:13:59,096 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2019-11-16 00:13:59,096 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:13:59,097 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-16 00:13:59,098 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:13:59,137 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:59,137 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:59,138 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:13:59,143 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:13:59,143 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:13:59,143 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2019-11-16 00:13:59,143 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856798439] [2019-11-16 00:13:59,144 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-16 00:13:59,144 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:13:59,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-16 00:13:59,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2019-11-16 00:13:59,145 INFO L87 Difference]: Start difference. First operand 481 states and 1096 transitions. Second operand 18 states. [2019-11-16 00:13:59,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:13:59,517 INFO L93 Difference]: Finished difference Result 948 states and 2128 transitions. [2019-11-16 00:13:59,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-16 00:13:59,518 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 69 [2019-11-16 00:13:59,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:13:59,522 INFO L225 Difference]: With dead ends: 948 [2019-11-16 00:13:59,522 INFO L226 Difference]: Without dead ends: 711 [2019-11-16 00:13:59,523 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=307, Invalid=749, Unknown=0, NotChecked=0, Total=1056 [2019-11-16 00:13:59,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2019-11-16 00:13:59,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 683. [2019-11-16 00:13:59,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2019-11-16 00:13:59,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1504 transitions. [2019-11-16 00:13:59,537 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1504 transitions. Word has length 69 [2019-11-16 00:13:59,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:13:59,537 INFO L462 AbstractCegarLoop]: Abstraction has 683 states and 1504 transitions. [2019-11-16 00:13:59,537 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-16 00:13:59,537 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1504 transitions. [2019-11-16 00:13:59,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-11-16 00:13:59,539 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:13:59,539 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] [2019-11-16 00:13:59,745 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:13:59,745 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:13:59,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:13:59,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1065219055, now seen corresponding path program 13 times [2019-11-16 00:13:59,745 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:13:59,745 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743745455] [2019-11-16 00:13:59,745 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:59,746 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:13:59,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:13:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:13:59,985 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:13:59,985 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743745455] [2019-11-16 00:13:59,986 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096789052] [2019-11-16 00:13:59,986 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/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 [2019-11-16 00:14:00,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:00,071 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-16 00:14:00,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:00,107 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:00,108 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:00,114 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:00,115 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:14:00,115 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2019-11-16 00:14:00,115 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837869461] [2019-11-16 00:14:00,115 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-16 00:14:00,115 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:00,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-16 00:14:00,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-11-16 00:14:00,116 INFO L87 Difference]: Start difference. First operand 683 states and 1504 transitions. Second operand 19 states. [2019-11-16 00:14:00,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:00,562 INFO L93 Difference]: Finished difference Result 940 states and 2112 transitions. [2019-11-16 00:14:00,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-16 00:14:00,563 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 73 [2019-11-16 00:14:00,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:00,566 INFO L225 Difference]: With dead ends: 940 [2019-11-16 00:14:00,567 INFO L226 Difference]: Without dead ends: 727 [2019-11-16 00:14:00,567 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=353, Invalid=837, Unknown=0, NotChecked=0, Total=1190 [2019-11-16 00:14:00,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2019-11-16 00:14:00,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 715. [2019-11-16 00:14:00,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 715 states. [2019-11-16 00:14:00,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1568 transitions. [2019-11-16 00:14:00,582 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1568 transitions. Word has length 73 [2019-11-16 00:14:00,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:00,582 INFO L462 AbstractCegarLoop]: Abstraction has 715 states and 1568 transitions. [2019-11-16 00:14:00,582 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-16 00:14:00,582 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1568 transitions. [2019-11-16 00:14:00,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-11-16 00:14:00,584 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:00,584 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] [2019-11-16 00:14:00,793 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:00,793 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:00,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:00,793 INFO L82 PathProgramCache]: Analyzing trace with hash -636577263, now seen corresponding path program 14 times [2019-11-16 00:14:00,793 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:00,794 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398507237] [2019-11-16 00:14:00,794 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:00,794 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:00,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:00,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:01,001 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:01,001 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398507237] [2019-11-16 00:14:01,001 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344564511] [2019-11-16 00:14:01,002 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/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 [2019-11-16 00:14:01,068 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:14:01,068 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:14:01,072 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-16 00:14:01,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:01,095 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:01,095 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:01,096 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:01,102 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:01,103 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:14:01,103 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2019-11-16 00:14:01,103 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043689877] [2019-11-16 00:14:01,104 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-16 00:14:01,104 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:01,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-16 00:14:01,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2019-11-16 00:14:01,105 INFO L87 Difference]: Start difference. First operand 715 states and 1568 transitions. Second operand 19 states. [2019-11-16 00:14:01,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:01,538 INFO L93 Difference]: Finished difference Result 972 states and 2176 transitions. [2019-11-16 00:14:01,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-16 00:14:01,539 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 73 [2019-11-16 00:14:01,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:01,543 INFO L225 Difference]: With dead ends: 972 [2019-11-16 00:14:01,543 INFO L226 Difference]: Without dead ends: 735 [2019-11-16 00:14:01,544 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=347, Invalid=843, Unknown=0, NotChecked=0, Total=1190 [2019-11-16 00:14:01,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2019-11-16 00:14:01,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 492. [2019-11-16 00:14:01,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 492 states. [2019-11-16 00:14:01,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 1118 transitions. [2019-11-16 00:14:01,557 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 1118 transitions. Word has length 73 [2019-11-16 00:14:01,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:01,558 INFO L462 AbstractCegarLoop]: Abstraction has 492 states and 1118 transitions. [2019-11-16 00:14:01,558 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-16 00:14:01,558 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1118 transitions. [2019-11-16 00:14:01,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-11-16 00:14:01,559 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:01,559 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] [2019-11-16 00:14:01,763 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:01,763 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:01,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:01,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1419819692, now seen corresponding path program 15 times [2019-11-16 00:14:01,763 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:01,764 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758583978] [2019-11-16 00:14:01,764 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:01,764 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:01,764 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:01,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:02,034 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:02,035 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758583978] [2019-11-16 00:14:02,035 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158217658] [2019-11-16 00:14:02,035 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/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 [2019-11-16 00:14:02,109 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2019-11-16 00:14:02,110 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:14:02,110 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-16 00:14:02,112 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:02,149 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:02,149 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:02,150 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:02,157 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 157 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:02,157 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:14:02,157 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2019-11-16 00:14:02,157 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891692558] [2019-11-16 00:14:02,158 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-16 00:14:02,158 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:02,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-16 00:14:02,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2019-11-16 00:14:02,159 INFO L87 Difference]: Start difference. First operand 492 states and 1118 transitions. Second operand 20 states. [2019-11-16 00:14:02,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:02,556 INFO L93 Difference]: Finished difference Result 964 states and 2160 transitions. [2019-11-16 00:14:02,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-11-16 00:14:02,557 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 77 [2019-11-16 00:14:02,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:02,560 INFO L225 Difference]: With dead ends: 964 [2019-11-16 00:14:02,560 INFO L226 Difference]: Without dead ends: 751 [2019-11-16 00:14:02,561 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=363, Invalid=969, Unknown=0, NotChecked=0, Total=1332 [2019-11-16 00:14:02,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2019-11-16 00:14:02,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 505. [2019-11-16 00:14:02,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2019-11-16 00:14:02,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 1144 transitions. [2019-11-16 00:14:02,575 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 1144 transitions. Word has length 77 [2019-11-16 00:14:02,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:02,575 INFO L462 AbstractCegarLoop]: Abstraction has 505 states and 1144 transitions. [2019-11-16 00:14:02,575 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-16 00:14:02,575 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 1144 transitions. [2019-11-16 00:14:02,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-11-16 00:14:02,576 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:02,576 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] [2019-11-16 00:14:02,781 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:02,781 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:02,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:02,782 INFO L82 PathProgramCache]: Analyzing trace with hash -63305743, now seen corresponding path program 16 times [2019-11-16 00:14:02,782 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:02,782 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633332544] [2019-11-16 00:14:02,782 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:02,782 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:02,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:03,020 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:03,020 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633332544] [2019-11-16 00:14:03,020 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107153605] [2019-11-16 00:14:03,020 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/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 [2019-11-16 00:14:03,102 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-16 00:14:03,102 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:14:03,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-16 00:14:03,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:03,135 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:03,135 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:03,144 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:03,145 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:14:03,145 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2019-11-16 00:14:03,145 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342521808] [2019-11-16 00:14:03,147 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-16 00:14:03,147 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:03,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-16 00:14:03,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2019-11-16 00:14:03,148 INFO L87 Difference]: Start difference. First operand 505 states and 1144 transitions. Second operand 21 states. [2019-11-16 00:14:03,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:03,538 INFO L93 Difference]: Finished difference Result 1012 states and 2256 transitions. [2019-11-16 00:14:03,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-16 00:14:03,539 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 81 [2019-11-16 00:14:03,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:03,543 INFO L225 Difference]: With dead ends: 1012 [2019-11-16 00:14:03,543 INFO L226 Difference]: Without dead ends: 823 [2019-11-16 00:14:03,544 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=441, Invalid=1041, Unknown=0, NotChecked=0, Total=1482 [2019-11-16 00:14:03,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2019-11-16 00:14:03,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 795. [2019-11-16 00:14:03,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2019-11-16 00:14:03,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1728 transitions. [2019-11-16 00:14:03,559 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1728 transitions. Word has length 81 [2019-11-16 00:14:03,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:03,560 INFO L462 AbstractCegarLoop]: Abstraction has 795 states and 1728 transitions. [2019-11-16 00:14:03,560 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-16 00:14:03,560 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1728 transitions. [2019-11-16 00:14:03,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-11-16 00:14:03,561 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:03,561 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] [2019-11-16 00:14:03,765 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:03,765 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:03,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:03,766 INFO L82 PathProgramCache]: Analyzing trace with hash -994619852, now seen corresponding path program 17 times [2019-11-16 00:14:03,766 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:03,766 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120666493] [2019-11-16 00:14:03,766 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:03,766 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:03,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:03,987 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:03,987 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120666493] [2019-11-16 00:14:03,988 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603062610] [2019-11-16 00:14:03,988 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/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 [2019-11-16 00:14:04,063 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2019-11-16 00:14:04,064 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:14:04,069 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-16 00:14:04,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:04,095 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:04,095 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:04,101 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:04,101 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:14:04,102 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2019-11-16 00:14:04,102 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300229523] [2019-11-16 00:14:04,102 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-16 00:14:04,102 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:04,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-16 00:14:04,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2019-11-16 00:14:04,103 INFO L87 Difference]: Start difference. First operand 795 states and 1728 transitions. Second operand 22 states. [2019-11-16 00:14:04,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:04,517 INFO L93 Difference]: Finished difference Result 1052 states and 2336 transitions. [2019-11-16 00:14:04,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-11-16 00:14:04,517 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 85 [2019-11-16 00:14:04,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:04,521 INFO L225 Difference]: With dead ends: 1052 [2019-11-16 00:14:04,521 INFO L226 Difference]: Without dead ends: 863 [2019-11-16 00:14:04,522 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=454, Invalid=1106, Unknown=0, NotChecked=0, Total=1560 [2019-11-16 00:14:04,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2019-11-16 00:14:04,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 561. [2019-11-16 00:14:04,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2019-11-16 00:14:04,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 1256 transitions. [2019-11-16 00:14:04,535 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 1256 transitions. Word has length 85 [2019-11-16 00:14:04,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:04,536 INFO L462 AbstractCegarLoop]: Abstraction has 561 states and 1256 transitions. [2019-11-16 00:14:04,536 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-16 00:14:04,536 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 1256 transitions. [2019-11-16 00:14:04,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-16 00:14:04,538 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:04,538 INFO L380 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 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] [2019-11-16 00:14:04,741 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:04,741 INFO L410 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:04,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:04,741 INFO L82 PathProgramCache]: Analyzing trace with hash -2008522415, now seen corresponding path program 18 times [2019-11-16 00:14:04,741 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:04,742 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840352236] [2019-11-16 00:14:04,742 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:04,742 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:04,742 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:04,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:04,963 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-16 00:14:04,963 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840352236] [2019-11-16 00:14:04,963 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258890098] [2019-11-16 00:14:04,963 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/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 [2019-11-16 00:14:05,050 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2019-11-16 00:14:05,050 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:14:05,051 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-16 00:14:05,053 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:05,085 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:05,085 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:05,086 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:05,095 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-16 00:14:05,095 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:14:05,096 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2019-11-16 00:14:05,096 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096892578] [2019-11-16 00:14:05,096 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-16 00:14:05,096 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:05,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-16 00:14:05,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2019-11-16 00:14:05,097 INFO L87 Difference]: Start difference. First operand 561 states and 1256 transitions. Second operand 22 states. [2019-11-16 00:14:05,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:05,505 INFO L93 Difference]: Finished difference Result 1010 states and 2203 transitions. [2019-11-16 00:14:05,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-11-16 00:14:05,506 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 89 [2019-11-16 00:14:05,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:05,511 INFO L225 Difference]: With dead ends: 1010 [2019-11-16 00:14:05,511 INFO L226 Difference]: Without dead ends: 867 [2019-11-16 00:14:05,512 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=470, Invalid=1090, Unknown=0, NotChecked=0, Total=1560 [2019-11-16 00:14:05,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2019-11-16 00:14:05,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 827. [2019-11-16 00:14:05,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 827 states. [2019-11-16 00:14:05,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1792 transitions. [2019-11-16 00:14:05,527 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1792 transitions. Word has length 89 [2019-11-16 00:14:05,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:05,527 INFO L462 AbstractCegarLoop]: Abstraction has 827 states and 1792 transitions. [2019-11-16 00:14:05,528 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-16 00:14:05,528 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1792 transitions. [2019-11-16 00:14:05,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2019-11-16 00:14:05,529 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:05,529 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] [2019-11-16 00:14:05,732 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:05,732 INFO L410 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:05,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:05,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1705518033, now seen corresponding path program 19 times [2019-11-16 00:14:05,733 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:05,733 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095697815] [2019-11-16 00:14:05,733 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:05,733 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:05,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:05,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:06,005 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:06,006 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095697815] [2019-11-16 00:14:06,006 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492110505] [2019-11-16 00:14:06,006 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/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 [2019-11-16 00:14:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:06,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-16 00:14:06,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:06,136 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:06,136 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:06,143 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:06,143 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:14:06,143 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2019-11-16 00:14:06,143 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556621430] [2019-11-16 00:14:06,144 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-16 00:14:06,144 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:06,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-16 00:14:06,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2019-11-16 00:14:06,145 INFO L87 Difference]: Start difference. First operand 827 states and 1792 transitions. Second operand 23 states. [2019-11-16 00:14:06,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:06,671 INFO L93 Difference]: Finished difference Result 1084 states and 2400 transitions. [2019-11-16 00:14:06,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-16 00:14:06,671 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 89 [2019-11-16 00:14:06,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:06,676 INFO L225 Difference]: With dead ends: 1084 [2019-11-16 00:14:06,677 INFO L226 Difference]: Without dead ends: 871 [2019-11-16 00:14:06,677 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=539, Invalid=1267, Unknown=0, NotChecked=0, Total=1806 [2019-11-16 00:14:06,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2019-11-16 00:14:06,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 859. [2019-11-16 00:14:06,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 859 states. [2019-11-16 00:14:06,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1856 transitions. [2019-11-16 00:14:06,693 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1856 transitions. Word has length 89 [2019-11-16 00:14:06,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:06,694 INFO L462 AbstractCegarLoop]: Abstraction has 859 states and 1856 transitions. [2019-11-16 00:14:06,694 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-16 00:14:06,694 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1856 transitions. [2019-11-16 00:14:06,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-11-16 00:14:06,696 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:06,696 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] [2019-11-16 00:14:06,901 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:06,901 INFO L410 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:06,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:06,901 INFO L82 PathProgramCache]: Analyzing trace with hash 134788244, now seen corresponding path program 20 times [2019-11-16 00:14:06,901 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:06,901 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261643663] [2019-11-16 00:14:06,901 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:06,901 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:06,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:07,186 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-16 00:14:07,186 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261643663] [2019-11-16 00:14:07,186 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640800216] [2019-11-16 00:14:07,187 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/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 [2019-11-16 00:14:07,284 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:14:07,285 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:14:07,286 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-16 00:14:07,288 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:07,313 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:07,314 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:07,315 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:07,325 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-16 00:14:07,325 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:14:07,325 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2019-11-16 00:14:07,326 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135609142] [2019-11-16 00:14:07,326 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-16 00:14:07,326 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:07,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-16 00:14:07,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2019-11-16 00:14:07,327 INFO L87 Difference]: Start difference. First operand 859 states and 1856 transitions. Second operand 23 states. [2019-11-16 00:14:07,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:07,858 INFO L93 Difference]: Finished difference Result 1132 states and 2496 transitions. [2019-11-16 00:14:07,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-16 00:14:07,859 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 93 [2019-11-16 00:14:07,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:07,864 INFO L225 Difference]: With dead ends: 1132 [2019-11-16 00:14:07,864 INFO L226 Difference]: Without dead ends: 931 [2019-11-16 00:14:07,865 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=524, Invalid=1282, Unknown=0, NotChecked=0, Total=1806 [2019-11-16 00:14:07,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2019-11-16 00:14:07,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 875. [2019-11-16 00:14:07,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 875 states. [2019-11-16 00:14:07,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1888 transitions. [2019-11-16 00:14:07,882 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1888 transitions. Word has length 93 [2019-11-16 00:14:07,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:07,883 INFO L462 AbstractCegarLoop]: Abstraction has 875 states and 1888 transitions. [2019-11-16 00:14:07,883 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-16 00:14:07,883 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1888 transitions. [2019-11-16 00:14:07,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-11-16 00:14:07,884 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:07,885 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] [2019-11-16 00:14:08,096 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:08,096 INFO L410 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:08,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:08,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1957453745, now seen corresponding path program 21 times [2019-11-16 00:14:08,096 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:08,097 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521863589] [2019-11-16 00:14:08,097 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:08,097 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:08,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:08,508 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:08,509 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521863589] [2019-11-16 00:14:08,509 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411643006] [2019-11-16 00:14:08,509 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:08,601 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2019-11-16 00:14:08,601 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:14:08,602 INFO L256 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 27 conjunts are in the unsatisfiable core [2019-11-16 00:14:08,603 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:08,638 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:08,639 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:08,639 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:08,649 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:08,650 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:14:08,650 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2019-11-16 00:14:08,650 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774850437] [2019-11-16 00:14:08,650 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-11-16 00:14:08,650 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:08,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-11-16 00:14:08,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2019-11-16 00:14:08,651 INFO L87 Difference]: Start difference. First operand 875 states and 1888 transitions. Second operand 25 states. [2019-11-16 00:14:09,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:09,117 INFO L93 Difference]: Finished difference Result 1160 states and 2552 transitions. [2019-11-16 00:14:09,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-11-16 00:14:09,118 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 97 [2019-11-16 00:14:09,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:09,123 INFO L225 Difference]: With dead ends: 1160 [2019-11-16 00:14:09,123 INFO L226 Difference]: Without dead ends: 971 [2019-11-16 00:14:09,124 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=583, Invalid=1579, Unknown=0, NotChecked=0, Total=2162 [2019-11-16 00:14:09,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2019-11-16 00:14:09,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 903. [2019-11-16 00:14:09,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 903 states. [2019-11-16 00:14:09,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1940 transitions. [2019-11-16 00:14:09,142 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1940 transitions. Word has length 97 [2019-11-16 00:14:09,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:09,142 INFO L462 AbstractCegarLoop]: Abstraction has 903 states and 1940 transitions. [2019-11-16 00:14:09,142 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-11-16 00:14:09,142 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1940 transitions. [2019-11-16 00:14:09,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-11-16 00:14:09,144 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:09,144 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] [2019-11-16 00:14:09,348 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:09,348 INFO L410 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:09,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:09,348 INFO L82 PathProgramCache]: Analyzing trace with hash -299342671, now seen corresponding path program 22 times [2019-11-16 00:14:09,348 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:09,349 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298382182] [2019-11-16 00:14:09,349 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:09,349 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:09,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:09,638 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:09,638 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298382182] [2019-11-16 00:14:09,638 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101023012] [2019-11-16 00:14:09,638 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:09,722 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-16 00:14:09,722 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:14:09,723 INFO L256 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 26 conjunts are in the unsatisfiable core [2019-11-16 00:14:09,724 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:09,748 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:09,749 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:09,749 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:09,757 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:09,757 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:14:09,757 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2019-11-16 00:14:09,757 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790123649] [2019-11-16 00:14:09,758 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-11-16 00:14:09,758 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:09,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-11-16 00:14:09,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2019-11-16 00:14:09,758 INFO L87 Difference]: Start difference. First operand 903 states and 1940 transitions. Second operand 25 states. [2019-11-16 00:14:10,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:10,373 INFO L93 Difference]: Finished difference Result 1314 states and 2909 transitions. [2019-11-16 00:14:10,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-11-16 00:14:10,373 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 97 [2019-11-16 00:14:10,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:10,379 INFO L225 Difference]: With dead ends: 1314 [2019-11-16 00:14:10,379 INFO L226 Difference]: Without dead ends: 1019 [2019-11-16 00:14:10,380 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=640, Invalid=1616, Unknown=0, NotChecked=0, Total=2256 [2019-11-16 00:14:10,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2019-11-16 00:14:10,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 935. [2019-11-16 00:14:10,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 935 states. [2019-11-16 00:14:10,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 2004 transitions. [2019-11-16 00:14:10,399 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 2004 transitions. Word has length 97 [2019-11-16 00:14:10,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:10,399 INFO L462 AbstractCegarLoop]: Abstraction has 935 states and 2004 transitions. [2019-11-16 00:14:10,399 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-11-16 00:14:10,399 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 2004 transitions. [2019-11-16 00:14:10,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-11-16 00:14:10,401 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:10,401 INFO L380 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 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] [2019-11-16 00:14:10,604 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:10,605 INFO L410 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:10,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:10,605 INFO L82 PathProgramCache]: Analyzing trace with hash -473499375, now seen corresponding path program 23 times [2019-11-16 00:14:10,605 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:10,605 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750218795] [2019-11-16 00:14:10,605 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:10,605 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:10,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:10,904 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 0 proven. 383 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-16 00:14:10,905 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750218795] [2019-11-16 00:14:10,905 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068532386] [2019-11-16 00:14:10,905 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:10,996 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-11-16 00:14:10,996 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:14:10,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 27 conjunts are in the unsatisfiable core [2019-11-16 00:14:10,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:11,024 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:11,024 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:11,025 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:11,034 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 0 proven. 383 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-16 00:14:11,034 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:14:11,034 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2019-11-16 00:14:11,035 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852497329] [2019-11-16 00:14:11,035 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-16 00:14:11,035 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:11,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-16 00:14:11,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2019-11-16 00:14:11,036 INFO L87 Difference]: Start difference. First operand 935 states and 2004 transitions. Second operand 26 states. [2019-11-16 00:14:11,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:11,604 INFO L93 Difference]: Finished difference Result 1122 states and 2427 transitions. [2019-11-16 00:14:11,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-11-16 00:14:11,625 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 105 [2019-11-16 00:14:11,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:11,634 INFO L225 Difference]: With dead ends: 1122 [2019-11-16 00:14:11,634 INFO L226 Difference]: Without dead ends: 979 [2019-11-16 00:14:11,635 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=682, Invalid=1574, Unknown=0, NotChecked=0, Total=2256 [2019-11-16 00:14:11,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2019-11-16 00:14:11,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 939. [2019-11-16 00:14:11,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 939 states. [2019-11-16 00:14:11,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 2016 transitions. [2019-11-16 00:14:11,658 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 2016 transitions. Word has length 105 [2019-11-16 00:14:11,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:11,659 INFO L462 AbstractCegarLoop]: Abstraction has 939 states and 2016 transitions. [2019-11-16 00:14:11,659 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-16 00:14:11,659 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 2016 transitions. [2019-11-16 00:14:11,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-11-16 00:14:11,660 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:11,661 INFO L380 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:14:11,863 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:11,864 INFO L410 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:11,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:11,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1054426223, now seen corresponding path program 24 times [2019-11-16 00:14:11,864 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:11,864 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439621657] [2019-11-16 00:14:11,864 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:11,864 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:11,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:11,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:12,204 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:12,205 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439621657] [2019-11-16 00:14:12,205 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117666981] [2019-11-16 00:14:12,205 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:12,306 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2019-11-16 00:14:12,306 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:14:12,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 29 conjunts are in the unsatisfiable core [2019-11-16 00:14:12,308 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:12,331 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:12,332 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:12,332 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:12,341 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:12,341 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:14:12,341 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2019-11-16 00:14:12,341 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795052954] [2019-11-16 00:14:12,341 INFO L442 AbstractCegarLoop]: Interpolant automaton has 27 states [2019-11-16 00:14:12,341 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:12,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2019-11-16 00:14:12,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=539, Unknown=0, NotChecked=0, Total=702 [2019-11-16 00:14:12,342 INFO L87 Difference]: Start difference. First operand 939 states and 2016 transitions. Second operand 27 states. [2019-11-16 00:14:13,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:13,057 INFO L93 Difference]: Finished difference Result 1196 states and 2624 transitions. [2019-11-16 00:14:13,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2019-11-16 00:14:13,057 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 105 [2019-11-16 00:14:13,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:13,061 INFO L225 Difference]: With dead ends: 1196 [2019-11-16 00:14:13,062 INFO L226 Difference]: Without dead ends: 983 [2019-11-16 00:14:13,063 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=689, Invalid=1861, Unknown=0, NotChecked=0, Total=2550 [2019-11-16 00:14:13,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2019-11-16 00:14:13,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 971. [2019-11-16 00:14:13,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2019-11-16 00:14:13,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 2080 transitions. [2019-11-16 00:14:13,080 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 2080 transitions. Word has length 105 [2019-11-16 00:14:13,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:13,081 INFO L462 AbstractCegarLoop]: Abstraction has 971 states and 2080 transitions. [2019-11-16 00:14:13,081 INFO L463 AbstractCegarLoop]: Interpolant automaton has 27 states. [2019-11-16 00:14:13,081 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 2080 transitions. [2019-11-16 00:14:13,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-11-16 00:14:13,083 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:13,083 INFO L380 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:14:13,286 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:13,287 INFO L410 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:13,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:13,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1190969967, now seen corresponding path program 25 times [2019-11-16 00:14:13,287 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:13,287 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305873055] [2019-11-16 00:14:13,287 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:13,287 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:13,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:13,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:13,767 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:13,767 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305873055] [2019-11-16 00:14:13,767 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121117075] [2019-11-16 00:14:13,768 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:13,874 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 28 conjunts are in the unsatisfiable core [2019-11-16 00:14:13,876 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:13,910 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:13,910 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:13,911 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:13,923 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:13,924 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:14:13,924 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2019-11-16 00:14:13,924 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343549204] [2019-11-16 00:14:13,925 INFO L442 AbstractCegarLoop]: Interpolant automaton has 27 states [2019-11-16 00:14:13,926 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:13,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2019-11-16 00:14:13,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=539, Unknown=0, NotChecked=0, Total=702 [2019-11-16 00:14:13,926 INFO L87 Difference]: Start difference. First operand 971 states and 2080 transitions. Second operand 27 states. [2019-11-16 00:14:14,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:14,770 INFO L93 Difference]: Finished difference Result 1342 states and 2965 transitions. [2019-11-16 00:14:14,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-11-16 00:14:14,771 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 105 [2019-11-16 00:14:14,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:14,774 INFO L225 Difference]: With dead ends: 1342 [2019-11-16 00:14:14,774 INFO L226 Difference]: Without dead ends: 1047 [2019-11-16 00:14:14,775 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=756, Invalid=1896, Unknown=0, NotChecked=0, Total=2652 [2019-11-16 00:14:14,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2019-11-16 00:14:14,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 1003. [2019-11-16 00:14:14,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2019-11-16 00:14:14,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 2144 transitions. [2019-11-16 00:14:14,794 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 2144 transitions. Word has length 105 [2019-11-16 00:14:14,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:14,794 INFO L462 AbstractCegarLoop]: Abstraction has 1003 states and 2144 transitions. [2019-11-16 00:14:14,794 INFO L463 AbstractCegarLoop]: Interpolant automaton has 27 states. [2019-11-16 00:14:14,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 2144 transitions. [2019-11-16 00:14:14,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-11-16 00:14:14,796 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:14,796 INFO L380 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:14:15,000 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:15,000 INFO L410 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:15,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:15,000 INFO L82 PathProgramCache]: Analyzing trace with hash 49756017, now seen corresponding path program 26 times [2019-11-16 00:14:15,001 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:15,001 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678242403] [2019-11-16 00:14:15,001 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:15,001 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:15,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:15,469 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:15,470 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678242403] [2019-11-16 00:14:15,470 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352355692] [2019-11-16 00:14:15,470 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:15,590 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:14:15,590 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:14:15,592 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 31 conjunts are in the unsatisfiable core [2019-11-16 00:14:15,594 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:15,679 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:15,679 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:15,680 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:15,693 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:15,693 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:14:15,694 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2019-11-16 00:14:15,694 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306441636] [2019-11-16 00:14:15,694 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-11-16 00:14:15,694 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:15,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-11-16 00:14:15,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=623, Unknown=0, NotChecked=0, Total=812 [2019-11-16 00:14:15,697 INFO L87 Difference]: Start difference. First operand 1003 states and 2144 transitions. Second operand 29 states. [2019-11-16 00:14:16,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:16,323 INFO L93 Difference]: Finished difference Result 1260 states and 2752 transitions. [2019-11-16 00:14:16,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-11-16 00:14:16,323 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 113 [2019-11-16 00:14:16,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:16,326 INFO L225 Difference]: With dead ends: 1260 [2019-11-16 00:14:16,326 INFO L226 Difference]: Without dead ends: 1047 [2019-11-16 00:14:16,327 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=804, Invalid=2166, Unknown=0, NotChecked=0, Total=2970 [2019-11-16 00:14:16,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2019-11-16 00:14:16,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 1035. [2019-11-16 00:14:16,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1035 states. [2019-11-16 00:14:16,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 2208 transitions. [2019-11-16 00:14:16,344 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 2208 transitions. Word has length 113 [2019-11-16 00:14:16,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:16,344 INFO L462 AbstractCegarLoop]: Abstraction has 1035 states and 2208 transitions. [2019-11-16 00:14:16,345 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-11-16 00:14:16,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 2208 transitions. [2019-11-16 00:14:16,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-11-16 00:14:16,346 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:16,347 INFO L380 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:14:16,550 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:16,550 INFO L410 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:16,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:16,551 INFO L82 PathProgramCache]: Analyzing trace with hash -2090387855, now seen corresponding path program 27 times [2019-11-16 00:14:16,551 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:16,551 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252255677] [2019-11-16 00:14:16,551 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:16,551 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:16,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:16,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:16,867 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:16,867 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252255677] [2019-11-16 00:14:16,867 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254351718] [2019-11-16 00:14:16,867 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:17,002 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2019-11-16 00:14:17,002 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:14:17,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 30 conjunts are in the unsatisfiable core [2019-11-16 00:14:17,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:17,029 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:17,030 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:17,030 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:17,041 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:17,042 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:14:17,042 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2019-11-16 00:14:17,042 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664505865] [2019-11-16 00:14:17,043 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-11-16 00:14:17,043 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:17,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-11-16 00:14:17,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=622, Unknown=0, NotChecked=0, Total=812 [2019-11-16 00:14:17,044 INFO L87 Difference]: Start difference. First operand 1035 states and 2208 transitions. Second operand 29 states. [2019-11-16 00:14:17,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:17,723 INFO L93 Difference]: Finished difference Result 1292 states and 2816 transitions. [2019-11-16 00:14:17,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-11-16 00:14:17,723 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 113 [2019-11-16 00:14:17,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:17,725 INFO L225 Difference]: With dead ends: 1292 [2019-11-16 00:14:17,725 INFO L226 Difference]: Without dead ends: 1055 [2019-11-16 00:14:17,726 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=877, Invalid=2093, Unknown=0, NotChecked=0, Total=2970 [2019-11-16 00:14:17,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2019-11-16 00:14:17,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 652. [2019-11-16 00:14:17,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 652 states. [2019-11-16 00:14:17,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1438 transitions. [2019-11-16 00:14:17,739 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1438 transitions. Word has length 113 [2019-11-16 00:14:17,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:17,739 INFO L462 AbstractCegarLoop]: Abstraction has 652 states and 1438 transitions. [2019-11-16 00:14:17,739 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-11-16 00:14:17,739 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1438 transitions. [2019-11-16 00:14:17,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-11-16 00:14:17,741 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:17,741 INFO L380 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:14:17,944 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:17,944 INFO L410 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:17,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:17,944 INFO L82 PathProgramCache]: Analyzing trace with hash -2074955340, now seen corresponding path program 28 times [2019-11-16 00:14:17,944 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:17,944 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191108184] [2019-11-16 00:14:17,945 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:17,945 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:17,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:18,402 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:18,403 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191108184] [2019-11-16 00:14:18,403 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365144589] [2019-11-16 00:14:18,403 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:18,529 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-16 00:14:18,530 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:14:18,531 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 31 conjunts are in the unsatisfiable core [2019-11-16 00:14:18,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:18,574 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:18,575 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:18,589 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:18,590 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:14:18,590 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 30 [2019-11-16 00:14:18,590 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117758683] [2019-11-16 00:14:18,591 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-11-16 00:14:18,591 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:18,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-11-16 00:14:18,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=667, Unknown=0, NotChecked=0, Total=870 [2019-11-16 00:14:18,592 INFO L87 Difference]: Start difference. First operand 652 states and 1438 transitions. Second operand 30 states. [2019-11-16 00:14:19,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:19,615 INFO L93 Difference]: Finished difference Result 1312 states and 2856 transitions. [2019-11-16 00:14:19,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-11-16 00:14:19,615 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 117 [2019-11-16 00:14:19,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:19,618 INFO L225 Difference]: With dead ends: 1312 [2019-11-16 00:14:19,618 INFO L226 Difference]: Without dead ends: 1123 [2019-11-16 00:14:19,620 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=910, Invalid=2170, Unknown=0, NotChecked=0, Total=3080 [2019-11-16 00:14:19,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2019-11-16 00:14:19,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1083. [2019-11-16 00:14:19,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1083 states. [2019-11-16 00:14:19,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 2304 transitions. [2019-11-16 00:14:19,673 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 2304 transitions. Word has length 117 [2019-11-16 00:14:19,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:19,673 INFO L462 AbstractCegarLoop]: Abstraction has 1083 states and 2304 transitions. [2019-11-16 00:14:19,673 INFO L463 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-11-16 00:14:19,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 2304 transitions. [2019-11-16 00:14:19,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-11-16 00:14:19,675 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:19,675 INFO L380 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:14:19,875 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:19,875 INFO L410 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:19,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:19,876 INFO L82 PathProgramCache]: Analyzing trace with hash 301847377, now seen corresponding path program 29 times [2019-11-16 00:14:19,876 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:19,876 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042035844] [2019-11-16 00:14:19,876 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:19,876 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:19,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:20,397 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:20,397 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042035844] [2019-11-16 00:14:20,398 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285809151] [2019-11-16 00:14:20,398 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:20,527 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2019-11-16 00:14:20,528 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:14:20,529 INFO L256 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 32 conjunts are in the unsatisfiable core [2019-11-16 00:14:20,531 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:20,580 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:20,581 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:20,598 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:20,598 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:14:20,599 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2019-11-16 00:14:20,599 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669459217] [2019-11-16 00:14:20,599 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-11-16 00:14:20,599 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:20,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-11-16 00:14:20,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2019-11-16 00:14:20,600 INFO L87 Difference]: Start difference. First operand 1083 states and 2304 transitions. Second operand 31 states. [2019-11-16 00:14:21,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:21,499 INFO L93 Difference]: Finished difference Result 1340 states and 2912 transitions. [2019-11-16 00:14:21,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-11-16 00:14:21,500 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 121 [2019-11-16 00:14:21,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:21,501 INFO L225 Difference]: With dead ends: 1340 [2019-11-16 00:14:21,501 INFO L226 Difference]: Without dead ends: 1127 [2019-11-16 00:14:21,503 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 655 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1031, Invalid=2391, Unknown=0, NotChecked=0, Total=3422 [2019-11-16 00:14:21,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2019-11-16 00:14:21,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1115. [2019-11-16 00:14:21,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1115 states. [2019-11-16 00:14:21,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 2368 transitions. [2019-11-16 00:14:21,518 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 2368 transitions. Word has length 121 [2019-11-16 00:14:21,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:21,518 INFO L462 AbstractCegarLoop]: Abstraction has 1115 states and 2368 transitions. [2019-11-16 00:14:21,519 INFO L463 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-11-16 00:14:21,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 2368 transitions. [2019-11-16 00:14:21,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-11-16 00:14:21,521 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:21,521 INFO L380 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:14:21,724 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:21,725 INFO L410 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:21,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:21,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1782015980, now seen corresponding path program 30 times [2019-11-16 00:14:21,725 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:21,725 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566048418] [2019-11-16 00:14:21,725 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:21,725 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:21,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:22,163 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-16 00:14:22,163 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566048418] [2019-11-16 00:14:22,164 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789796484] [2019-11-16 00:14:22,164 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:22,303 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2019-11-16 00:14:22,303 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:14:22,305 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 32 conjunts are in the unsatisfiable core [2019-11-16 00:14:22,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:22,337 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:22,338 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:22,339 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:22,355 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-16 00:14:22,355 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:14:22,356 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 31 [2019-11-16 00:14:22,356 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558262641] [2019-11-16 00:14:22,356 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-11-16 00:14:22,356 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:22,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-11-16 00:14:22,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2019-11-16 00:14:22,357 INFO L87 Difference]: Start difference. First operand 1115 states and 2368 transitions. Second operand 31 states. [2019-11-16 00:14:23,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:23,096 INFO L93 Difference]: Finished difference Result 1388 states and 3008 transitions. [2019-11-16 00:14:23,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-11-16 00:14:23,097 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 125 [2019-11-16 00:14:23,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:23,099 INFO L225 Difference]: With dead ends: 1388 [2019-11-16 00:14:23,099 INFO L226 Difference]: Without dead ends: 1187 [2019-11-16 00:14:23,100 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1008, Invalid=2414, Unknown=0, NotChecked=0, Total=3422 [2019-11-16 00:14:23,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2019-11-16 00:14:23,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1131. [2019-11-16 00:14:23,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1131 states. [2019-11-16 00:14:23,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 2400 transitions. [2019-11-16 00:14:23,119 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 2400 transitions. Word has length 125 [2019-11-16 00:14:23,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:23,119 INFO L462 AbstractCegarLoop]: Abstraction has 1131 states and 2400 transitions. [2019-11-16 00:14:23,119 INFO L463 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-11-16 00:14:23,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 2400 transitions. [2019-11-16 00:14:23,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-11-16 00:14:23,121 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:23,122 INFO L380 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:14:23,326 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:23,326 INFO L410 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:23,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:23,326 INFO L82 PathProgramCache]: Analyzing trace with hash -434467023, now seen corresponding path program 31 times [2019-11-16 00:14:23,327 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:23,327 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318697012] [2019-11-16 00:14:23,327 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:23,327 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:23,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:23,871 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:23,871 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318697012] [2019-11-16 00:14:23,871 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296948699] [2019-11-16 00:14:23,872 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:23,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:23,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 34 conjunts are in the unsatisfiable core [2019-11-16 00:14:23,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:24,018 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:24,018 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:24,037 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:24,037 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:14:24,037 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2019-11-16 00:14:24,038 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962554896] [2019-11-16 00:14:24,039 INFO L442 AbstractCegarLoop]: Interpolant automaton has 33 states [2019-11-16 00:14:24,040 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:24,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2019-11-16 00:14:24,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=809, Unknown=0, NotChecked=0, Total=1056 [2019-11-16 00:14:24,042 INFO L87 Difference]: Start difference. First operand 1131 states and 2400 transitions. Second operand 33 states. [2019-11-16 00:14:25,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:25,134 INFO L93 Difference]: Finished difference Result 1388 states and 3008 transitions. [2019-11-16 00:14:25,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-11-16 00:14:25,134 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 129 [2019-11-16 00:14:25,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:25,137 INFO L225 Difference]: With dead ends: 1388 [2019-11-16 00:14:25,137 INFO L226 Difference]: Without dead ends: 1175 [2019-11-16 00:14:25,138 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1179, Invalid=2727, Unknown=0, NotChecked=0, Total=3906 [2019-11-16 00:14:25,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2019-11-16 00:14:25,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1163. [2019-11-16 00:14:25,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1163 states. [2019-11-16 00:14:25,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 2464 transitions. [2019-11-16 00:14:25,157 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 2464 transitions. Word has length 129 [2019-11-16 00:14:25,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:25,158 INFO L462 AbstractCegarLoop]: Abstraction has 1163 states and 2464 transitions. [2019-11-16 00:14:25,158 INFO L463 AbstractCegarLoop]: Interpolant automaton has 33 states. [2019-11-16 00:14:25,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 2464 transitions. [2019-11-16 00:14:25,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-11-16 00:14:25,161 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:25,161 INFO L380 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:14:25,364 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:25,365 INFO L410 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:25,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:25,365 INFO L82 PathProgramCache]: Analyzing trace with hash 172656689, now seen corresponding path program 32 times [2019-11-16 00:14:25,365 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:25,365 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777170323] [2019-11-16 00:14:25,366 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:25,366 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:25,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:25,887 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:25,887 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777170323] [2019-11-16 00:14:25,887 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696600138] [2019-11-16 00:14:25,887 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:26,035 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:14:26,035 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:14:26,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 34 conjunts are in the unsatisfiable core [2019-11-16 00:14:26,038 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:26,090 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:26,090 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:26,091 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:26,109 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:26,109 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:14:26,110 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 33 [2019-11-16 00:14:26,110 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752072961] [2019-11-16 00:14:26,110 INFO L442 AbstractCegarLoop]: Interpolant automaton has 33 states [2019-11-16 00:14:26,111 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:26,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2019-11-16 00:14:26,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=808, Unknown=0, NotChecked=0, Total=1056 [2019-11-16 00:14:26,111 INFO L87 Difference]: Start difference. First operand 1163 states and 2464 transitions. Second operand 33 states. [2019-11-16 00:14:27,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:27,170 INFO L93 Difference]: Finished difference Result 1420 states and 3072 transitions. [2019-11-16 00:14:27,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-11-16 00:14:27,170 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 129 [2019-11-16 00:14:27,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:27,172 INFO L225 Difference]: With dead ends: 1420 [2019-11-16 00:14:27,172 INFO L226 Difference]: Without dead ends: 1183 [2019-11-16 00:14:27,172 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1159, Invalid=2747, Unknown=0, NotChecked=0, Total=3906 [2019-11-16 00:14:27,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2019-11-16 00:14:27,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 716. [2019-11-16 00:14:27,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 716 states. [2019-11-16 00:14:27,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1566 transitions. [2019-11-16 00:14:27,187 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1566 transitions. Word has length 129 [2019-11-16 00:14:27,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:27,187 INFO L462 AbstractCegarLoop]: Abstraction has 716 states and 1566 transitions. [2019-11-16 00:14:27,187 INFO L463 AbstractCegarLoop]: Interpolant automaton has 33 states. [2019-11-16 00:14:27,188 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1566 transitions. [2019-11-16 00:14:27,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-11-16 00:14:27,189 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:27,189 INFO L380 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:14:27,392 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:27,392 INFO L410 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:27,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:27,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1639392116, now seen corresponding path program 33 times [2019-11-16 00:14:27,393 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:27,393 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416298145] [2019-11-16 00:14:27,393 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:27,393 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:27,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:28,021 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:28,021 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416298145] [2019-11-16 00:14:28,021 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615289139] [2019-11-16 00:14:28,022 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:28,193 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2019-11-16 00:14:28,194 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:14:28,196 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 36 conjunts are in the unsatisfiable core [2019-11-16 00:14:28,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:28,246 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:28,247 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:28,247 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:28,277 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:28,277 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:14:28,278 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 34 [2019-11-16 00:14:28,278 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176369546] [2019-11-16 00:14:28,278 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-11-16 00:14:28,279 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:28,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-11-16 00:14:28,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=859, Unknown=0, NotChecked=0, Total=1122 [2019-11-16 00:14:28,279 INFO L87 Difference]: Start difference. First operand 716 states and 1566 transitions. Second operand 34 states. [2019-11-16 00:14:29,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:29,097 INFO L93 Difference]: Finished difference Result 1440 states and 3112 transitions. [2019-11-16 00:14:29,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-11-16 00:14:29,097 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 133 [2019-11-16 00:14:29,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:29,100 INFO L225 Difference]: With dead ends: 1440 [2019-11-16 00:14:29,100 INFO L226 Difference]: Without dead ends: 1251 [2019-11-16 00:14:29,100 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1140, Invalid=3020, Unknown=0, NotChecked=0, Total=4160 [2019-11-16 00:14:29,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2019-11-16 00:14:29,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1211. [2019-11-16 00:14:29,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1211 states. [2019-11-16 00:14:29,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 2560 transitions. [2019-11-16 00:14:29,115 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 2560 transitions. Word has length 133 [2019-11-16 00:14:29,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:29,115 INFO L462 AbstractCegarLoop]: Abstraction has 1211 states and 2560 transitions. [2019-11-16 00:14:29,115 INFO L463 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-11-16 00:14:29,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 2560 transitions. [2019-11-16 00:14:29,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-11-16 00:14:29,116 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:29,117 INFO L380 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:14:29,317 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:29,317 INFO L410 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:29,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:29,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1758631151, now seen corresponding path program 34 times [2019-11-16 00:14:29,318 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:29,318 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945417725] [2019-11-16 00:14:29,318 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:29,318 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:29,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:29,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:29,756 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:29,756 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945417725] [2019-11-16 00:14:29,756 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085928604] [2019-11-16 00:14:29,756 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:29,880 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-16 00:14:29,880 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:14:29,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 36 conjunts are in the unsatisfiable core [2019-11-16 00:14:29,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:29,916 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:29,916 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:29,936 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:29,937 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:14:29,937 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2019-11-16 00:14:29,937 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413205334] [2019-11-16 00:14:29,937 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-11-16 00:14:29,938 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:29,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-11-16 00:14:29,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=911, Unknown=0, NotChecked=0, Total=1190 [2019-11-16 00:14:29,938 INFO L87 Difference]: Start difference. First operand 1211 states and 2560 transitions. Second operand 35 states. [2019-11-16 00:14:31,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:31,133 INFO L93 Difference]: Finished difference Result 1468 states and 3168 transitions. [2019-11-16 00:14:31,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-11-16 00:14:31,135 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 137 [2019-11-16 00:14:31,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:31,137 INFO L225 Difference]: With dead ends: 1468 [2019-11-16 00:14:31,138 INFO L226 Difference]: Without dead ends: 1255 [2019-11-16 00:14:31,138 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 849 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1337, Invalid=3085, Unknown=0, NotChecked=0, Total=4422 [2019-11-16 00:14:31,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2019-11-16 00:14:31,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1243. [2019-11-16 00:14:31,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1243 states. [2019-11-16 00:14:31,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 2624 transitions. [2019-11-16 00:14:31,157 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 2624 transitions. Word has length 137 [2019-11-16 00:14:31,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:31,158 INFO L462 AbstractCegarLoop]: Abstraction has 1243 states and 2624 transitions. [2019-11-16 00:14:31,158 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-11-16 00:14:31,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 2624 transitions. [2019-11-16 00:14:31,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-11-16 00:14:31,160 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:31,160 INFO L380 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:14:31,364 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:31,364 INFO L410 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:31,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:31,364 INFO L82 PathProgramCache]: Analyzing trace with hash 931088852, now seen corresponding path program 35 times [2019-11-16 00:14:31,365 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:31,365 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750715664] [2019-11-16 00:14:31,365 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:31,365 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:31,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:31,969 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-16 00:14:31,969 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750715664] [2019-11-16 00:14:31,969 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7043603] [2019-11-16 00:14:31,970 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:32,105 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2019-11-16 00:14:32,105 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:14:32,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 36 conjunts are in the unsatisfiable core [2019-11-16 00:14:32,108 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:32,146 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:32,147 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:32,147 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:32,164 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-16 00:14:32,164 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:14:32,165 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 35 [2019-11-16 00:14:32,165 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699990393] [2019-11-16 00:14:32,165 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-11-16 00:14:32,165 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:32,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-11-16 00:14:32,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=911, Unknown=0, NotChecked=0, Total=1190 [2019-11-16 00:14:32,166 INFO L87 Difference]: Start difference. First operand 1243 states and 2624 transitions. Second operand 35 states. [2019-11-16 00:14:33,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:33,013 INFO L93 Difference]: Finished difference Result 1516 states and 3264 transitions. [2019-11-16 00:14:33,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-11-16 00:14:33,013 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 141 [2019-11-16 00:14:33,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:33,016 INFO L225 Difference]: With dead ends: 1516 [2019-11-16 00:14:33,016 INFO L226 Difference]: Without dead ends: 1315 [2019-11-16 00:14:33,016 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 776 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1310, Invalid=3112, Unknown=0, NotChecked=0, Total=4422 [2019-11-16 00:14:33,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2019-11-16 00:14:33,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1259. [2019-11-16 00:14:33,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1259 states. [2019-11-16 00:14:33,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 2656 transitions. [2019-11-16 00:14:33,036 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 2656 transitions. Word has length 141 [2019-11-16 00:14:33,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:33,036 INFO L462 AbstractCegarLoop]: Abstraction has 1259 states and 2656 transitions. [2019-11-16 00:14:33,037 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-11-16 00:14:33,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 2656 transitions. [2019-11-16 00:14:33,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-11-16 00:14:33,039 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:33,039 INFO L380 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:14:33,243 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:33,243 INFO L410 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:33,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:33,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1561749233, now seen corresponding path program 36 times [2019-11-16 00:14:33,243 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:33,243 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558227919] [2019-11-16 00:14:33,244 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:33,244 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:33,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:33,790 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:33,790 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558227919] [2019-11-16 00:14:33,791 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131489555] [2019-11-16 00:14:33,791 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:33,950 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2019-11-16 00:14:33,950 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:14:33,951 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 39 conjunts are in the unsatisfiable core [2019-11-16 00:14:33,954 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:33,989 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:33,990 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:33,990 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:34,006 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:34,006 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:14:34,006 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2019-11-16 00:14:34,007 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272425119] [2019-11-16 00:14:34,007 INFO L442 AbstractCegarLoop]: Interpolant automaton has 37 states [2019-11-16 00:14:34,007 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:34,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2019-11-16 00:14:34,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1019, Unknown=0, NotChecked=0, Total=1332 [2019-11-16 00:14:34,008 INFO L87 Difference]: Start difference. First operand 1259 states and 2656 transitions. Second operand 37 states. [2019-11-16 00:14:34,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:34,914 INFO L93 Difference]: Finished difference Result 1544 states and 3320 transitions. [2019-11-16 00:14:34,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-11-16 00:14:34,914 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 145 [2019-11-16 00:14:34,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:34,916 INFO L225 Difference]: With dead ends: 1544 [2019-11-16 00:14:34,916 INFO L226 Difference]: Without dead ends: 1355 [2019-11-16 00:14:34,917 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 929 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1354, Invalid=3616, Unknown=0, NotChecked=0, Total=4970 [2019-11-16 00:14:34,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2019-11-16 00:14:34,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 1287. [2019-11-16 00:14:34,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1287 states. [2019-11-16 00:14:34,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 2708 transitions. [2019-11-16 00:14:34,937 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 2708 transitions. Word has length 145 [2019-11-16 00:14:34,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:34,938 INFO L462 AbstractCegarLoop]: Abstraction has 1287 states and 2708 transitions. [2019-11-16 00:14:34,938 INFO L463 AbstractCegarLoop]: Interpolant automaton has 37 states. [2019-11-16 00:14:34,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 2708 transitions. [2019-11-16 00:14:34,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-11-16 00:14:34,940 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:34,941 INFO L380 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:14:35,144 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:35,144 INFO L410 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:35,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:35,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1445832207, now seen corresponding path program 37 times [2019-11-16 00:14:35,145 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:35,145 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641578038] [2019-11-16 00:14:35,145 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:35,145 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:35,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:35,700 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:35,700 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641578038] [2019-11-16 00:14:35,701 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022184508] [2019-11-16 00:14:35,701 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:35,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 38 conjunts are in the unsatisfiable core [2019-11-16 00:14:35,839 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:35,872 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:35,872 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:35,873 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:35,895 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:35,896 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:14:35,896 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 37 [2019-11-16 00:14:35,896 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35316149] [2019-11-16 00:14:35,897 INFO L442 AbstractCegarLoop]: Interpolant automaton has 37 states [2019-11-16 00:14:35,897 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:35,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2019-11-16 00:14:35,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=1018, Unknown=0, NotChecked=0, Total=1332 [2019-11-16 00:14:35,897 INFO L87 Difference]: Start difference. First operand 1287 states and 2708 transitions. Second operand 37 states. [2019-11-16 00:14:36,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:36,898 INFO L93 Difference]: Finished difference Result 1572 states and 3376 transitions. [2019-11-16 00:14:36,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-11-16 00:14:36,898 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 145 [2019-11-16 00:14:36,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:36,899 INFO L225 Difference]: With dead ends: 1572 [2019-11-16 00:14:36,899 INFO L226 Difference]: Without dead ends: 1335 [2019-11-16 00:14:36,899 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 874 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1481, Invalid=3489, Unknown=0, NotChecked=0, Total=4970 [2019-11-16 00:14:36,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2019-11-16 00:14:36,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1307. [2019-11-16 00:14:36,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1307 states. [2019-11-16 00:14:36,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 2752 transitions. [2019-11-16 00:14:36,917 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 2752 transitions. Word has length 145 [2019-11-16 00:14:36,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:36,918 INFO L462 AbstractCegarLoop]: Abstraction has 1307 states and 2752 transitions. [2019-11-16 00:14:36,918 INFO L463 AbstractCegarLoop]: Interpolant automaton has 37 states. [2019-11-16 00:14:36,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 2752 transitions. [2019-11-16 00:14:36,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-11-16 00:14:36,919 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:36,919 INFO L380 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:14:37,119 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:37,120 INFO L410 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:37,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:37,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1904219444, now seen corresponding path program 38 times [2019-11-16 00:14:37,120 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:37,120 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209679767] [2019-11-16 00:14:37,120 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:37,120 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:37,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:37,668 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 0 proven. 931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:37,668 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209679767] [2019-11-16 00:14:37,668 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984174073] [2019-11-16 00:14:37,668 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:37,805 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:14:37,805 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:14:37,807 INFO L256 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 40 conjunts are in the unsatisfiable core [2019-11-16 00:14:37,808 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:37,867 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:37,867 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:37,868 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:37,887 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 0 proven. 931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:37,887 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:14:37,888 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 38 [2019-11-16 00:14:37,888 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664375361] [2019-11-16 00:14:37,888 INFO L442 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-11-16 00:14:37,888 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:37,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-11-16 00:14:37,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=1075, Unknown=0, NotChecked=0, Total=1406 [2019-11-16 00:14:37,889 INFO L87 Difference]: Start difference. First operand 1307 states and 2752 transitions. Second operand 38 states. [2019-11-16 00:14:38,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:38,794 INFO L93 Difference]: Finished difference Result 1564 states and 3360 transitions. [2019-11-16 00:14:38,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2019-11-16 00:14:38,794 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 149 [2019-11-16 00:14:38,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:38,796 INFO L225 Difference]: With dead ends: 1564 [2019-11-16 00:14:38,796 INFO L226 Difference]: Without dead ends: 1327 [2019-11-16 00:14:38,796 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1443, Invalid=3813, Unknown=0, NotChecked=0, Total=5256 [2019-11-16 00:14:38,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2019-11-16 00:14:38,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 793. [2019-11-16 00:14:38,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2019-11-16 00:14:38,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1720 transitions. [2019-11-16 00:14:38,809 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1720 transitions. Word has length 149 [2019-11-16 00:14:38,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:38,810 INFO L462 AbstractCegarLoop]: Abstraction has 793 states and 1720 transitions. [2019-11-16 00:14:38,810 INFO L463 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-11-16 00:14:38,810 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1720 transitions. [2019-11-16 00:14:38,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-11-16 00:14:38,811 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:38,811 INFO L380 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:14:39,012 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:39,012 INFO L410 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:39,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:39,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1883929903, now seen corresponding path program 39 times [2019-11-16 00:14:39,012 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:39,012 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336933698] [2019-11-16 00:14:39,012 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:39,013 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:39,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:39,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:39,579 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:39,579 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336933698] [2019-11-16 00:14:39,580 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353485663] [2019-11-16 00:14:39,580 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:39,736 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2019-11-16 00:14:39,736 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:14:39,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 41 conjunts are in the unsatisfiable core [2019-11-16 00:14:39,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:39,778 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:39,778 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:39,778 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:39,799 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:39,799 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:14:39,799 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 39 [2019-11-16 00:14:39,799 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010216329] [2019-11-16 00:14:39,800 INFO L442 AbstractCegarLoop]: Interpolant automaton has 39 states [2019-11-16 00:14:39,800 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:39,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2019-11-16 00:14:39,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=1133, Unknown=0, NotChecked=0, Total=1482 [2019-11-16 00:14:39,801 INFO L87 Difference]: Start difference. First operand 793 states and 1720 transitions. Second operand 39 states. [2019-11-16 00:14:40,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:40,767 INFO L93 Difference]: Finished difference Result 1588 states and 3408 transitions. [2019-11-16 00:14:40,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-11-16 00:14:40,767 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 153 [2019-11-16 00:14:40,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:40,768 INFO L225 Difference]: With dead ends: 1588 [2019-11-16 00:14:40,769 INFO L226 Difference]: Without dead ends: 1399 [2019-11-16 00:14:40,769 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1514, Invalid=4036, Unknown=0, NotChecked=0, Total=5550 [2019-11-16 00:14:40,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1399 states. [2019-11-16 00:14:40,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1399 to 1371. [2019-11-16 00:14:40,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1371 states. [2019-11-16 00:14:40,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 2880 transitions. [2019-11-16 00:14:40,783 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 2880 transitions. Word has length 153 [2019-11-16 00:14:40,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:40,783 INFO L462 AbstractCegarLoop]: Abstraction has 1371 states and 2880 transitions. [2019-11-16 00:14:40,783 INFO L463 AbstractCegarLoop]: Interpolant automaton has 39 states. [2019-11-16 00:14:40,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 2880 transitions. [2019-11-16 00:14:40,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-11-16 00:14:40,785 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:40,785 INFO L380 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:14:40,985 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:40,986 INFO L410 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:40,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:40,986 INFO L82 PathProgramCache]: Analyzing trace with hash 2088386068, now seen corresponding path program 40 times [2019-11-16 00:14:40,986 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:40,986 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474767207] [2019-11-16 00:14:40,986 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:40,986 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:40,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:41,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 0 proven. 1057 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:41,750 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474767207] [2019-11-16 00:14:41,750 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647369780] [2019-11-16 00:14:41,750 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:41,895 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-16 00:14:41,895 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:14:41,896 INFO L256 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 41 conjunts are in the unsatisfiable core [2019-11-16 00:14:41,897 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:41,941 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:41,942 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:41,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 0 proven. 1057 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:41,967 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:14:41,968 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2019-11-16 00:14:41,968 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535940250] [2019-11-16 00:14:41,968 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-11-16 00:14:41,968 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:41,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-11-16 00:14:41,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=1192, Unknown=0, NotChecked=0, Total=1560 [2019-11-16 00:14:41,969 INFO L87 Difference]: Start difference. First operand 1371 states and 2880 transitions. Second operand 40 states. [2019-11-16 00:14:43,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:43,077 INFO L93 Difference]: Finished difference Result 1628 states and 3488 transitions. [2019-11-16 00:14:43,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-11-16 00:14:43,077 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 157 [2019-11-16 00:14:43,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:43,079 INFO L225 Difference]: With dead ends: 1628 [2019-11-16 00:14:43,079 INFO L226 Difference]: Without dead ends: 1439 [2019-11-16 00:14:43,079 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1002 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1705, Invalid=3995, Unknown=0, NotChecked=0, Total=5700 [2019-11-16 00:14:43,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2019-11-16 00:14:43,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 849. [2019-11-16 00:14:43,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 849 states. [2019-11-16 00:14:43,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1832 transitions. [2019-11-16 00:14:43,088 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1832 transitions. Word has length 157 [2019-11-16 00:14:43,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:43,089 INFO L462 AbstractCegarLoop]: Abstraction has 849 states and 1832 transitions. [2019-11-16 00:14:43,089 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-11-16 00:14:43,089 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1832 transitions. [2019-11-16 00:14:43,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-11-16 00:14:43,090 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:43,090 INFO L380 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:14:43,290 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:43,291 INFO L410 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:43,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:43,291 INFO L82 PathProgramCache]: Analyzing trace with hash -913638351, now seen corresponding path program 41 times [2019-11-16 00:14:43,291 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:43,291 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800964243] [2019-11-16 00:14:43,291 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:43,292 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:43,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:44,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 0 proven. 1125 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-16 00:14:44,092 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800964243] [2019-11-16 00:14:44,092 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554807751] [2019-11-16 00:14:44,093 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:44,268 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2019-11-16 00:14:44,268 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:14:44,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 41 conjunts are in the unsatisfiable core [2019-11-16 00:14:44,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:44,302 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:44,302 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:44,303 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:44,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1126 backedges. 0 proven. 1125 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-16 00:14:44,323 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:14:44,323 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 40 [2019-11-16 00:14:44,323 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318945631] [2019-11-16 00:14:44,323 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-11-16 00:14:44,323 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:44,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-11-16 00:14:44,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=1191, Unknown=0, NotChecked=0, Total=1560 [2019-11-16 00:14:44,324 INFO L87 Difference]: Start difference. First operand 849 states and 1832 transitions. Second operand 40 states. [2019-11-16 00:14:45,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:45,375 INFO L93 Difference]: Finished difference Result 1586 states and 3355 transitions. [2019-11-16 00:14:45,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2019-11-16 00:14:45,375 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 161 [2019-11-16 00:14:45,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:45,376 INFO L225 Difference]: With dead ends: 1586 [2019-11-16 00:14:45,377 INFO L226 Difference]: Without dead ends: 1443 [2019-11-16 00:14:45,377 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1087 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1739, Invalid=3961, Unknown=0, NotChecked=0, Total=5700 [2019-11-16 00:14:45,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2019-11-16 00:14:45,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1403. [2019-11-16 00:14:45,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1403 states. [2019-11-16 00:14:45,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 2944 transitions. [2019-11-16 00:14:45,394 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 2944 transitions. Word has length 161 [2019-11-16 00:14:45,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:45,394 INFO L462 AbstractCegarLoop]: Abstraction has 1403 states and 2944 transitions. [2019-11-16 00:14:45,394 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-11-16 00:14:45,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 2944 transitions. [2019-11-16 00:14:45,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-11-16 00:14:45,396 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:45,397 INFO L380 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:14:45,599 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:45,600 INFO L410 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:45,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:45,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1494565199, now seen corresponding path program 42 times [2019-11-16 00:14:45,600 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:45,600 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329971922] [2019-11-16 00:14:45,600 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:45,600 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:45,600 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:46,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:46,175 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329971922] [2019-11-16 00:14:46,175 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196854979] [2019-11-16 00:14:46,175 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:46,345 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2019-11-16 00:14:46,345 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:14:46,347 INFO L256 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 43 conjunts are in the unsatisfiable core [2019-11-16 00:14:46,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:46,393 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:46,393 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:46,393 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:46,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:46,421 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:14:46,421 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2019-11-16 00:14:46,421 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812471839] [2019-11-16 00:14:46,422 INFO L442 AbstractCegarLoop]: Interpolant automaton has 41 states [2019-11-16 00:14:46,422 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:46,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2019-11-16 00:14:46,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=1253, Unknown=0, NotChecked=0, Total=1640 [2019-11-16 00:14:46,422 INFO L87 Difference]: Start difference. First operand 1403 states and 2944 transitions. Second operand 41 states. [2019-11-16 00:14:47,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:47,959 INFO L93 Difference]: Finished difference Result 1660 states and 3552 transitions. [2019-11-16 00:14:47,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-11-16 00:14:47,959 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 161 [2019-11-16 00:14:47,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:47,960 INFO L225 Difference]: With dead ends: 1660 [2019-11-16 00:14:47,960 INFO L226 Difference]: Without dead ends: 1447 [2019-11-16 00:14:47,961 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1155 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1683, Invalid=4479, Unknown=0, NotChecked=0, Total=6162 [2019-11-16 00:14:47,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2019-11-16 00:14:47,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 1435. [2019-11-16 00:14:47,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1435 states. [2019-11-16 00:14:47,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1435 states to 1435 states and 3008 transitions. [2019-11-16 00:14:47,973 INFO L78 Accepts]: Start accepts. Automaton has 1435 states and 3008 transitions. Word has length 161 [2019-11-16 00:14:47,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:47,974 INFO L462 AbstractCegarLoop]: Abstraction has 1435 states and 3008 transitions. [2019-11-16 00:14:47,974 INFO L463 AbstractCegarLoop]: Interpolant automaton has 41 states. [2019-11-16 00:14:47,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states and 3008 transitions. [2019-11-16 00:14:47,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-11-16 00:14:47,975 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:47,975 INFO L380 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:14:48,176 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:48,176 INFO L410 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:48,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:48,176 INFO L82 PathProgramCache]: Analyzing trace with hash 2102248564, now seen corresponding path program 43 times [2019-11-16 00:14:48,176 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:48,177 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931425386] [2019-11-16 00:14:48,177 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:48,177 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:48,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:48,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-16 00:14:48,826 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931425386] [2019-11-16 00:14:48,826 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798577855] [2019-11-16 00:14:48,826 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:48,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:48,988 INFO L256 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 42 conjunts are in the unsatisfiable core [2019-11-16 00:14:48,989 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:49,034 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:49,034 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:49,035 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:49,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-16 00:14:49,055 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:14:49,055 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 41 [2019-11-16 00:14:49,056 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047696580] [2019-11-16 00:14:49,056 INFO L442 AbstractCegarLoop]: Interpolant automaton has 41 states [2019-11-16 00:14:49,056 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:49,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2019-11-16 00:14:49,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=388, Invalid=1252, Unknown=0, NotChecked=0, Total=1640 [2019-11-16 00:14:49,057 INFO L87 Difference]: Start difference. First operand 1435 states and 3008 transitions. Second operand 41 states. [2019-11-16 00:14:50,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:50,152 INFO L93 Difference]: Finished difference Result 1594 states and 3371 transitions. [2019-11-16 00:14:50,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-11-16 00:14:50,153 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 165 [2019-11-16 00:14:50,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:50,154 INFO L225 Difference]: With dead ends: 1594 [2019-11-16 00:14:50,154 INFO L226 Difference]: Without dead ends: 1451 [2019-11-16 00:14:50,154 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1057 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1834, Invalid=4172, Unknown=0, NotChecked=0, Total=6006 [2019-11-16 00:14:50,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2019-11-16 00:14:50,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 844. [2019-11-16 00:14:50,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 844 states. [2019-11-16 00:14:50,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1822 transitions. [2019-11-16 00:14:50,165 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1822 transitions. Word has length 165 [2019-11-16 00:14:50,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:50,166 INFO L462 AbstractCegarLoop]: Abstraction has 844 states and 1822 transitions. [2019-11-16 00:14:50,166 INFO L463 AbstractCegarLoop]: Interpolant automaton has 41 states. [2019-11-16 00:14:50,166 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1822 transitions. [2019-11-16 00:14:50,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-11-16 00:14:50,167 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:50,167 INFO L380 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:14:50,367 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:50,368 INFO L410 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:50,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:50,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1521321716, now seen corresponding path program 44 times [2019-11-16 00:14:50,368 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:50,368 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736326989] [2019-11-16 00:14:50,368 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:50,368 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:50,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:50,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:51,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 0 proven. 1191 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:51,067 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736326989] [2019-11-16 00:14:51,067 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474371255] [2019-11-16 00:14:51,067 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:51,234 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-16 00:14:51,235 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:14:51,236 INFO L256 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 44 conjunts are in the unsatisfiable core [2019-11-16 00:14:51,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:51,295 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:51,295 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:51,296 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:51,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1191 backedges. 0 proven. 1191 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:51,324 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:14:51,324 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 42 [2019-11-16 00:14:51,324 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108176457] [2019-11-16 00:14:51,325 INFO L442 AbstractCegarLoop]: Interpolant automaton has 42 states [2019-11-16 00:14:51,325 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:51,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2019-11-16 00:14:51,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=407, Invalid=1315, Unknown=0, NotChecked=0, Total=1722 [2019-11-16 00:14:51,326 INFO L87 Difference]: Start difference. First operand 844 states and 1822 transitions. Second operand 42 states. [2019-11-16 00:14:52,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:52,418 INFO L93 Difference]: Finished difference Result 1696 states and 3624 transitions. [2019-11-16 00:14:52,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-11-16 00:14:52,419 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 165 [2019-11-16 00:14:52,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:52,420 INFO L225 Difference]: With dead ends: 1696 [2019-11-16 00:14:52,420 INFO L226 Difference]: Without dead ends: 1507 [2019-11-16 00:14:52,421 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1170 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1782, Invalid=4698, Unknown=0, NotChecked=0, Total=6480 [2019-11-16 00:14:52,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2019-11-16 00:14:52,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1467. [2019-11-16 00:14:52,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1467 states. [2019-11-16 00:14:52,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1467 states to 1467 states and 3072 transitions. [2019-11-16 00:14:52,433 INFO L78 Accepts]: Start accepts. Automaton has 1467 states and 3072 transitions. Word has length 165 [2019-11-16 00:14:52,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:52,433 INFO L462 AbstractCegarLoop]: Abstraction has 1467 states and 3072 transitions. [2019-11-16 00:14:52,433 INFO L463 AbstractCegarLoop]: Interpolant automaton has 42 states. [2019-11-16 00:14:52,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1467 states and 3072 transitions. [2019-11-16 00:14:52,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-11-16 00:14:52,435 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:52,435 INFO L380 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:14:52,635 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:52,636 INFO L410 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:52,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:52,636 INFO L82 PathProgramCache]: Analyzing trace with hash 982915729, now seen corresponding path program 45 times [2019-11-16 00:14:52,636 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:52,636 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113983511] [2019-11-16 00:14:52,636 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:52,636 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:52,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:52,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:53,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:53,335 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113983511] [2019-11-16 00:14:53,335 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438899704] [2019-11-16 00:14:53,335 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:53,525 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2019-11-16 00:14:53,526 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:14:53,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 45 conjunts are in the unsatisfiable core [2019-11-16 00:14:53,529 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:53,584 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:53,584 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:53,585 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:53,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:53,614 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:14:53,615 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2019-11-16 00:14:53,615 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622083940] [2019-11-16 00:14:53,615 INFO L442 AbstractCegarLoop]: Interpolant automaton has 43 states [2019-11-16 00:14:53,615 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:53,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2019-11-16 00:14:53,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=427, Invalid=1379, Unknown=0, NotChecked=0, Total=1806 [2019-11-16 00:14:53,616 INFO L87 Difference]: Start difference. First operand 1467 states and 3072 transitions. Second operand 43 states. [2019-11-16 00:14:54,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:54,805 INFO L93 Difference]: Finished difference Result 1740 states and 3712 transitions. [2019-11-16 00:14:54,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-11-16 00:14:54,805 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 169 [2019-11-16 00:14:54,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:54,807 INFO L225 Difference]: With dead ends: 1740 [2019-11-16 00:14:54,807 INFO L226 Difference]: Without dead ends: 1551 [2019-11-16 00:14:54,807 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1277 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1861, Invalid=4945, Unknown=0, NotChecked=0, Total=6806 [2019-11-16 00:14:54,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2019-11-16 00:14:54,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 900. [2019-11-16 00:14:54,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 900 states. [2019-11-16 00:14:54,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1934 transitions. [2019-11-16 00:14:54,817 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1934 transitions. Word has length 169 [2019-11-16 00:14:54,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:54,817 INFO L462 AbstractCegarLoop]: Abstraction has 900 states and 1934 transitions. [2019-11-16 00:14:54,817 INFO L463 AbstractCegarLoop]: Interpolant automaton has 43 states. [2019-11-16 00:14:54,817 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1934 transitions. [2019-11-16 00:14:54,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-11-16 00:14:54,818 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:54,818 INFO L380 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:14:55,020 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:55,021 INFO L410 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:55,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:55,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1939483988, now seen corresponding path program 46 times [2019-11-16 00:14:55,021 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:55,021 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535469122] [2019-11-16 00:14:55,021 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:55,021 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:55,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:55,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:55,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-16 00:14:55,633 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535469122] [2019-11-16 00:14:55,633 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540199023] [2019-11-16 00:14:55,633 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:55,800 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-16 00:14:55,800 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:14:55,802 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 44 conjunts are in the unsatisfiable core [2019-11-16 00:14:55,803 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:55,844 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:55,845 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:55,845 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:14:55,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1333 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-16 00:14:55,868 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:14:55,868 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 43 [2019-11-16 00:14:55,868 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39388309] [2019-11-16 00:14:55,868 INFO L442 AbstractCegarLoop]: Interpolant automaton has 43 states [2019-11-16 00:14:55,868 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:55,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2019-11-16 00:14:55,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=427, Invalid=1379, Unknown=0, NotChecked=0, Total=1806 [2019-11-16 00:14:55,869 INFO L87 Difference]: Start difference. First operand 900 states and 1934 transitions. Second operand 43 states. [2019-11-16 00:14:57,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:57,068 INFO L93 Difference]: Finished difference Result 1808 states and 3848 transitions. [2019-11-16 00:14:57,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-11-16 00:14:57,068 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 173 [2019-11-16 00:14:57,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:57,069 INFO L225 Difference]: With dead ends: 1808 [2019-11-16 00:14:57,069 INFO L226 Difference]: Without dead ends: 1607 [2019-11-16 00:14:57,070 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1212 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2034, Invalid=4772, Unknown=0, NotChecked=0, Total=6806 [2019-11-16 00:14:57,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2019-11-16 00:14:57,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 1511. [2019-11-16 00:14:57,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1511 states. [2019-11-16 00:14:57,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 3156 transitions. [2019-11-16 00:14:57,083 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 3156 transitions. Word has length 173 [2019-11-16 00:14:57,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:57,083 INFO L462 AbstractCegarLoop]: Abstraction has 1511 states and 3156 transitions. [2019-11-16 00:14:57,083 INFO L463 AbstractCegarLoop]: Interpolant automaton has 43 states. [2019-11-16 00:14:57,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 3156 transitions. [2019-11-16 00:14:57,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-11-16 00:14:57,085 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:57,086 INFO L380 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 19, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:14:57,286 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:57,286 INFO L410 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:57,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:57,287 INFO L82 PathProgramCache]: Analyzing trace with hash 624415729, now seen corresponding path program 47 times [2019-11-16 00:14:57,287 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:57,287 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628581147] [2019-11-16 00:14:57,287 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:57,287 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:57,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:14:58,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 1352 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:58,160 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628581147] [2019-11-16 00:14:58,161 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276906691] [2019-11-16 00:14:58,161 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:58,345 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 21 check-sat command(s) [2019-11-16 00:14:58,345 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:14:58,347 INFO L256 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 42 conjunts are in the unsatisfiable core [2019-11-16 00:14:58,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:14:58,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 1410 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:14:58,410 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-16 00:14:58,411 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [43] total 45 [2019-11-16 00:14:58,411 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399897871] [2019-11-16 00:14:58,411 INFO L442 AbstractCegarLoop]: Interpolant automaton has 43 states [2019-11-16 00:14:58,411 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:14:58,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2019-11-16 00:14:58,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=1491, Unknown=0, NotChecked=0, Total=1980 [2019-11-16 00:14:58,412 INFO L87 Difference]: Start difference. First operand 1511 states and 3156 transitions. Second operand 43 states. [2019-11-16 00:14:59,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:14:59,360 INFO L93 Difference]: Finished difference Result 13731 states and 27379 transitions. [2019-11-16 00:14:59,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2019-11-16 00:14:59,361 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 177 [2019-11-16 00:14:59,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:14:59,362 INFO L225 Difference]: With dead ends: 13731 [2019-11-16 00:14:59,363 INFO L226 Difference]: Without dead ends: 2219 [2019-11-16 00:14:59,363 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1157 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2209, Invalid=4931, Unknown=0, NotChecked=0, Total=7140 [2019-11-16 00:14:59,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2219 states. [2019-11-16 00:14:59,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2219 to 2219. [2019-11-16 00:14:59,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2219 states. [2019-11-16 00:14:59,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2219 states to 2219 states and 4509 transitions. [2019-11-16 00:14:59,389 INFO L78 Accepts]: Start accepts. Automaton has 2219 states and 4509 transitions. Word has length 177 [2019-11-16 00:14:59,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:14:59,390 INFO L462 AbstractCegarLoop]: Abstraction has 2219 states and 4509 transitions. [2019-11-16 00:14:59,390 INFO L463 AbstractCegarLoop]: Interpolant automaton has 43 states. [2019-11-16 00:14:59,390 INFO L276 IsEmpty]: Start isEmpty. Operand 2219 states and 4509 transitions. [2019-11-16 00:14:59,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-11-16 00:14:59,393 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:14:59,393 INFO L380 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:14:59,596 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:14:59,597 INFO L410 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:14:59,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:14:59,597 INFO L82 PathProgramCache]: Analyzing trace with hash 43488881, now seen corresponding path program 48 times [2019-11-16 00:14:59,597 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:14:59,597 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740420238] [2019-11-16 00:14:59,597 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:59,597 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:14:59,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:14:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:15:00,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:15:00,276 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740420238] [2019-11-16 00:15:00,277 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033762054] [2019-11-16 00:15:00,277 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:15:00,476 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2019-11-16 00:15:00,476 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-16 00:15:00,478 INFO L256 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 47 conjunts are in the unsatisfiable core [2019-11-16 00:15:00,480 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-16 00:15:00,532 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:15:00,532 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:15:00,533 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-16 00:15:00,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:15:00,560 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-16 00:15:00,561 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 45 [2019-11-16 00:15:00,561 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848083047] [2019-11-16 00:15:00,561 INFO L442 AbstractCegarLoop]: Interpolant automaton has 45 states [2019-11-16 00:15:00,561 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:15:00,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2019-11-16 00:15:00,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=1511, Unknown=0, NotChecked=0, Total=1980 [2019-11-16 00:15:00,561 INFO L87 Difference]: Start difference. First operand 2219 states and 4509 transitions. Second operand 45 states. [2019-11-16 00:15:01,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:15:01,702 INFO L93 Difference]: Finished difference Result 2373 states and 4844 transitions. [2019-11-16 00:15:01,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-11-16 00:15:01,702 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 177 [2019-11-16 00:15:01,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:15:01,704 INFO L225 Difference]: With dead ends: 2373 [2019-11-16 00:15:01,704 INFO L226 Difference]: Without dead ends: 1643 [2019-11-16 00:15:01,705 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1363 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2043, Invalid=5267, Unknown=0, NotChecked=0, Total=7310 [2019-11-16 00:15:01,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2019-11-16 00:15:01,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 1615. [2019-11-16 00:15:01,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1615 states. [2019-11-16 00:15:01,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 3373 transitions. [2019-11-16 00:15:01,725 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 3373 transitions. Word has length 177 [2019-11-16 00:15:01,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:15:01,725 INFO L462 AbstractCegarLoop]: Abstraction has 1615 states and 3373 transitions. [2019-11-16 00:15:01,725 INFO L463 AbstractCegarLoop]: Interpolant automaton has 45 states. [2019-11-16 00:15:01,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 3373 transitions. [2019-11-16 00:15:01,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-11-16 00:15:01,728 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:15:01,728 INFO L380 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-16 00:15:01,931 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-16 00:15:01,931 INFO L410 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:15:01,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:15:01,932 INFO L82 PathProgramCache]: Analyzing trace with hash -825262735, now seen corresponding path program 49 times [2019-11-16 00:15:01,932 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:15:01,932 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403524750] [2019-11-16 00:15:01,932 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:15:01,932 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:15:01,932 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:15:01,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:15:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-16 00:15:02,072 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-16 00:15:02,084 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-16 00:15:02,244 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-16 00:15:02,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:15:02 BasicIcfg [2019-11-16 00:15:02,246 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-16 00:15:02,246 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-16 00:15:02,246 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-16 00:15:02,246 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-16 00:15:02,247 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:13:48" (3/4) ... [2019-11-16 00:15:02,249 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-16 00:15:02,395 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_161ba38b-3054-4e32-a25a-7d790c4ceeed/bin/uautomizer/witness.graphml [2019-11-16 00:15:02,396 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-16 00:15:02,398 INFO L168 Benchmark]: Toolchain (without parser) took 75445.59 ms. Allocated memory was 1.0 GB in the beginning and 2.0 GB in the end (delta: 939.5 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -173.7 MB). Peak memory consumption was 765.8 MB. Max. memory is 11.5 GB. [2019-11-16 00:15:02,398 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:15:02,398 INFO L168 Benchmark]: CACSL2BoogieTranslator took 638.45 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -136.8 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-11-16 00:15:02,399 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.09 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-16 00:15:02,399 INFO L168 Benchmark]: Boogie Preprocessor took 26.85 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-16 00:15:02,399 INFO L168 Benchmark]: RCFGBuilder took 451.20 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2019-11-16 00:15:02,400 INFO L168 Benchmark]: TraceAbstraction took 74129.04 ms. Allocated memory was 1.1 GB in the beginning and 2.0 GB in the end (delta: 820.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -97.1 MB). Peak memory consumption was 722.9 MB. Max. memory is 11.5 GB. [2019-11-16 00:15:02,400 INFO L168 Benchmark]: Witness Printer took 149.76 ms. Allocated memory is still 2.0 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 29.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 11.5 GB. [2019-11-16 00:15:02,402 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 966.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 638.45 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -136.8 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 46.09 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.85 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 451.20 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 74129.04 ms. Allocated memory was 1.1 GB in the beginning and 2.0 GB in the end (delta: 820.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -97.1 MB). Peak memory consumption was 722.9 MB. Max. memory is 11.5 GB. * Witness Printer took 149.76 ms. Allocated memory is still 2.0 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 29.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 703]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L675] 0 int i = 3, j = 6; VAL [i=3, j=6] [L693] 0 pthread_t id1, id2; VAL [i=3, j=6] [L694] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arg={0:0}, i=3, j=6] [L677] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L695] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L685] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L677] COND TRUE 1 k < 20 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=0] [L685] COND TRUE 2 k < 20 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=0] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=1] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L677] COND TRUE 1 k < 20 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=1] [L685] COND TRUE 2 k < 20 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=1] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=2] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L677] COND TRUE 1 k < 20 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2] [L685] COND TRUE 2 k < 20 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=2] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=2] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L677] COND TRUE 1 k < 20 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3] [L685] COND TRUE 2 k < 20 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=3] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=3] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L677] COND TRUE 1 k < 20 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L685] COND TRUE 2 k < 20 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=5] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L677] COND TRUE 1 k < 20 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=5] [L685] COND TRUE 2 k < 20 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=5, k=5] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=5] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L677] COND TRUE 1 k < 20 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=6] [L685] COND TRUE 2 k < 20 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=6, k=6] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=6, k=7] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L677] COND TRUE 1 k < 20 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=7] [L685] COND TRUE 2 k < 20 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=7, k=7] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=7] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L677] COND TRUE 1 k < 20 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=8] [L685] COND TRUE 2 k < 20 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=8, k=8] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=8] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L677] COND TRUE 1 k < 20 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=9, k=9] [L685] COND TRUE 2 k < 20 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=9] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=9, k=10] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L677] COND TRUE 1 k < 20 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=26, k=10, k=10] [L685] COND TRUE 2 k < 20 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=10, k=10] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=10, k=11] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=11, k=11] [L677] COND TRUE 1 k < 20 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=28, k=11, k=11] [L685] COND TRUE 2 k < 20 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=11, k=11] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=12, k=11] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=12, k=12] [L677] COND TRUE 1 k < 20 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=30, k=12, k=12] [L685] COND TRUE 2 k < 20 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=12, k=12] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=12, k=13] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=13, k=13] [L677] COND TRUE 1 k < 20 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=32, k=13, k=13] [L685] COND TRUE 2 k < 20 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=13, k=13] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=14, k=13] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=14, k=14] [L677] COND TRUE 1 k < 20 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=34, k=14, k=14] [L685] COND TRUE 2 k < 20 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=14, k=14] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=14, k=15] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=15, k=15] [L677] COND TRUE 1 k < 20 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=36, k=15, k=15] [L685] COND TRUE 2 k < 20 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=15, k=15] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=16, k=15] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=16, k=16] [L677] COND TRUE 1 k < 20 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=38, k=16, k=16] [L685] COND TRUE 2 k < 20 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=16, k=16] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=16, k=17] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=17, k=17] [L677] COND TRUE 1 k < 20 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=40, k=17, k=17] [L685] COND TRUE 2 k < 20 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=17, k=17] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=17, k=18] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=18, k=18] [L677] COND TRUE 1 k < 20 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=42, k=18, k=18] [L685] COND TRUE 2 k < 20 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=18, k=18] [L685] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=18, k=19] [L677] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=19, k=19] [L677] COND TRUE 1 k < 20 [L679] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=44, k=19, k=19] [L685] COND TRUE 2 k < 20 [L687] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=46, k=19, k=19] [L697] 0 int condI = i >= (2*20 +6); [L700] 0 int condJ = j >= (2*20 +6); VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=46, k=19, k=19] [L702] COND TRUE 0 condI || condJ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=46, k=19, k=19] [L703] 0 __VERIFIER_error() VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=46, k=19, k=19] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 64 locations, 1 error locations. Result: UNSAFE, OverallTime: 74.0s, OverallIterations: 54, TraceHistogramMax: 21, AutomataDifference: 34.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 3344 SDtfs, 26859 SDslu, 33960 SDs, 0 SdLazy, 6754 SolverSat, 4680 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7614 GetRequests, 5208 SyntacticMatches, 0 SemanticMatches, 2406 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26188 ImplicationChecksByTransitivity, 43.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2219occurred in iteration=52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 53 MinimizatonAttempts, 6175 StatesRemovedByMinimization, 49 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 20.9s InterpolantComputationTime, 10590 NumberOfCodeBlocks, 10590 NumberOfCodeBlocksAsserted, 383 NumberOfCheckSat, 10311 ConstructedInterpolants, 0 QuantifiedInterpolants, 3781307 SizeOfPredicates, 1216 NumberOfNonLiveVariables, 11792 ConjunctsInSsa, 1376 ConjunctsInUnsatCore, 102 InterpolantComputations, 5 PerfectInterpolantSequences, 2784/49528 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 incorrect! Received shutdown request...