./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/rangesum05.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6a4ba027-a9b0-4ccb-a5a7-b15c334206cb/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6a4ba027-a9b0-4ccb-a5a7-b15c334206cb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6a4ba027-a9b0-4ccb-a5a7-b15c334206cb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6a4ba027-a9b0-4ccb-a5a7-b15c334206cb/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum05.i -s /tmp/vcloud-vcloud-master/worker/run_dir_6a4ba027-a9b0-4ccb-a5a7-b15c334206cb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6a4ba027-a9b0-4ccb-a5a7-b15c334206cb/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0bbcd29b379466a58e055ac550736cd77ce56d9c ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-a4ecdab [2020-11-28 02:57:12,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:57:12,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:57:12,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:57:12,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:57:12,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:57:12,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:57:12,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:57:12,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:57:12,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:57:12,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:57:12,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:57:12,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:57:12,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:57:12,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:57:13,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:57:13,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:57:13,007 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:57:13,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:57:13,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:57:13,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:57:13,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:57:13,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:57:13,028 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:57:13,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:57:13,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:57:13,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:57:13,040 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:57:13,041 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:57:13,042 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:57:13,043 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:57:13,044 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:57:13,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:57:13,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:57:13,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:57:13,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:57:13,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:57:13,051 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:57:13,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:57:13,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:57:13,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:57:13,057 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6a4ba027-a9b0-4ccb-a5a7-b15c334206cb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:57:13,103 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:57:13,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:57:13,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:57:13,106 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:57:13,106 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:57:13,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:57:13,106 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:57:13,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:57:13,107 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:57:13,107 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:57:13,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:57:13,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:57:13,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:57:13,109 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:57:13,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:57:13,109 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:57:13,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:57:13,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:57:13,110 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:57:13,110 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:57:13,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:57:13,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:57:13,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:57:13,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:57:13,111 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:57:13,112 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:57:13,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:57:13,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:57:13,112 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:57:13,112 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_6a4ba027-a9b0-4ccb-a5a7-b15c334206cb/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6a4ba027-a9b0-4ccb-a5a7-b15c334206cb/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bbcd29b379466a58e055ac550736cd77ce56d9c [2020-11-28 02:57:13,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:57:13,493 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:57:13,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:57:13,499 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:57:13,500 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:57:13,501 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6a4ba027-a9b0-4ccb-a5a7-b15c334206cb/bin/uautomizer/../../sv-benchmarks/c/reducercommutativity/rangesum05.i [2020-11-28 02:57:13,594 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6a4ba027-a9b0-4ccb-a5a7-b15c334206cb/bin/uautomizer/data/476899520/66d2f405b8d34bc795ef40b79de69f96/FLAG064149fb8 [2020-11-28 02:57:14,086 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:57:14,087 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6a4ba027-a9b0-4ccb-a5a7-b15c334206cb/sv-benchmarks/c/reducercommutativity/rangesum05.i [2020-11-28 02:57:14,094 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6a4ba027-a9b0-4ccb-a5a7-b15c334206cb/bin/uautomizer/data/476899520/66d2f405b8d34bc795ef40b79de69f96/FLAG064149fb8 [2020-11-28 02:57:14,428 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6a4ba027-a9b0-4ccb-a5a7-b15c334206cb/bin/uautomizer/data/476899520/66d2f405b8d34bc795ef40b79de69f96 [2020-11-28 02:57:14,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:57:14,432 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:57:14,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:14,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:57:14,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:57:14,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:14,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f40477 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14, skipping insertion in model container [2020-11-28 02:57:14,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:14,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:57:14,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:57:14,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:14,671 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:57:14,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:14,708 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:57:14,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14 WrapperNode [2020-11-28 02:57:14,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:14,710 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:14,710 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:57:14,710 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:57:14,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:14,725 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:14,751 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:14,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:57:14,752 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:57:14,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:57:14,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:14,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:14,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:14,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:14,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:14,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:14,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14" (1/1) ... [2020-11-28 02:57:14,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:57:14,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:57:14,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:57:14,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:57:14,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6a4ba027-a9b0-4ccb-a5a7-b15c334206cb/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 [2020-11-28 02:57:14,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:57:14,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:57:14,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 02:57:14,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:57:14,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:57:14,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 02:57:14,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 02:57:15,275 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:57:15,275 INFO L298 CfgBuilder]: Removed 19 assume(true) statements. [2020-11-28 02:57:15,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:15 BoogieIcfgContainer [2020-11-28 02:57:15,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:57:15,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:57:15,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:57:15,292 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:57:15,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:57:14" (1/3) ... [2020-11-28 02:57:15,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67a6ac14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:15, skipping insertion in model container [2020-11-28 02:57:15,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:14" (2/3) ... [2020-11-28 02:57:15,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67a6ac14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:15, skipping insertion in model container [2020-11-28 02:57:15,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:15" (3/3) ... [2020-11-28 02:57:15,296 INFO L111 eAbstractionObserver]: Analyzing ICFG rangesum05.i [2020-11-28 02:57:15,314 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:57:15,319 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 02:57:15,334 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 02:57:15,387 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:57:15,388 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:57:15,388 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:57:15,388 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:57:15,388 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:57:15,388 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:57:15,389 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:57:15,389 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:57:15,407 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-11-28 02:57:15,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 02:57:15,422 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:15,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:15,424 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:15,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:15,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1570593938, now seen corresponding path program 1 times [2020-11-28 02:57:15,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:15,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843883054] [2020-11-28 02:57:15,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:15,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:15,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843883054] [2020-11-28 02:57:15,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:15,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:57:15,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306495562] [2020-11-28 02:57:15,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 02:57:15,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:15,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 02:57:15,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:57:15,705 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2020-11-28 02:57:15,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:15,735 INFO L93 Difference]: Finished difference Result 58 states and 90 transitions. [2020-11-28 02:57:15,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 02:57:15,737 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2020-11-28 02:57:15,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:15,759 INFO L225 Difference]: With dead ends: 58 [2020-11-28 02:57:15,762 INFO L226 Difference]: Without dead ends: 27 [2020-11-28 02:57:15,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:57:15,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-28 02:57:15,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-28 02:57:15,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 02:57:15,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-28 02:57:15,811 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 18 [2020-11-28 02:57:15,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:15,812 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-28 02:57:15,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 02:57:15,813 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-28 02:57:15,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 02:57:15,814 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:15,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:15,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:57:15,816 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:15,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:15,819 INFO L82 PathProgramCache]: Analyzing trace with hash 813479325, now seen corresponding path program 1 times [2020-11-28 02:57:15,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:15,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831417952] [2020-11-28 02:57:15,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:15,859 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:15,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [546926768] [2020-11-28 02:57:15,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6a4ba027-a9b0-4ccb-a5a7-b15c334206cb/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 [2020-11-28 02:57:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:15,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 02:57:15,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:16,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:16,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831417952] [2020-11-28 02:57:16,038 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:16,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546926768] [2020-11-28 02:57:16,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:16,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 02:57:16,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714936852] [2020-11-28 02:57:16,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:57:16,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:16,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:16,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:16,042 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 3 states. [2020-11-28 02:57:16,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:16,075 INFO L93 Difference]: Finished difference Result 52 states and 72 transitions. [2020-11-28 02:57:16,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:16,078 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-11-28 02:57:16,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:16,079 INFO L225 Difference]: With dead ends: 52 [2020-11-28 02:57:16,080 INFO L226 Difference]: Without dead ends: 29 [2020-11-28 02:57:16,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 02:57:16,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-28 02:57:16,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-11-28 02:57:16,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-28 02:57:16,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2020-11-28 02:57:16,086 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 18 [2020-11-28 02:57:16,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:16,086 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2020-11-28 02:57:16,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:57:16,087 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2020-11-28 02:57:16,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 02:57:16,091 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:16,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:16,307 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 02:57:16,308 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:16,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:16,308 INFO L82 PathProgramCache]: Analyzing trace with hash -552235489, now seen corresponding path program 1 times [2020-11-28 02:57:16,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:16,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041124449] [2020-11-28 02:57:16,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:16,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:16,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:16,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041124449] [2020-11-28 02:57:16,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849628218] [2020-11-28 02:57:16,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6a4ba027-a9b0-4ccb-a5a7-b15c334206cb/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 [2020-11-28 02:57:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:16,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 02:57:16,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:16,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 02:57:16,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:57:16,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-11-28 02:57:16,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30207711] [2020-11-28 02:57:16,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:57:16,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:16,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:16,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:16,518 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand 3 states. [2020-11-28 02:57:16,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:16,593 INFO L93 Difference]: Finished difference Result 59 states and 84 transitions. [2020-11-28 02:57:16,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:16,594 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-11-28 02:57:16,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:16,595 INFO L225 Difference]: With dead ends: 59 [2020-11-28 02:57:16,595 INFO L226 Difference]: Without dead ends: 37 [2020-11-28 02:57:16,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:16,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-28 02:57:16,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2020-11-28 02:57:16,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-28 02:57:16,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2020-11-28 02:57:16,601 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 20 [2020-11-28 02:57:16,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:16,602 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2020-11-28 02:57:16,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:57:16,602 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2020-11-28 02:57:16,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-28 02:57:16,603 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:16,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:16,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:16,828 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:16,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:16,828 INFO L82 PathProgramCache]: Analyzing trace with hash -745215302, now seen corresponding path program 1 times [2020-11-28 02:57:16,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:16,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923799657] [2020-11-28 02:57:16,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:16,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:16,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-28 02:57:16,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923799657] [2020-11-28 02:57:16,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511170600] [2020-11-28 02:57:16,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6a4ba027-a9b0-4ccb-a5a7-b15c334206cb/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 [2020-11-28 02:57:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:16,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 02:57:16,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:16,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 02:57:17,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:57:17,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-11-28 02:57:17,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122299872] [2020-11-28 02:57:17,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:57:17,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:17,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:17,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:17,002 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand 3 states. [2020-11-28 02:57:17,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:17,024 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2020-11-28 02:57:17,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:17,025 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-11-28 02:57:17,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:17,026 INFO L225 Difference]: With dead ends: 48 [2020-11-28 02:57:17,026 INFO L226 Difference]: Without dead ends: 36 [2020-11-28 02:57:17,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:17,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-28 02:57:17,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-11-28 02:57:17,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-28 02:57:17,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2020-11-28 02:57:17,033 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 29 [2020-11-28 02:57:17,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:17,034 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions. [2020-11-28 02:57:17,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:57:17,034 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions. [2020-11-28 02:57:17,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-28 02:57:17,035 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:17,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:17,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:17,239 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:17,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:17,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1253041416, now seen corresponding path program 1 times [2020-11-28 02:57:17,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:17,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494680714] [2020-11-28 02:57:17,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:17,287 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 02:57:17,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494680714] [2020-11-28 02:57:17,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474801087] [2020-11-28 02:57:17,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6a4ba027-a9b0-4ccb-a5a7-b15c334206cb/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 [2020-11-28 02:57:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:17,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 02:57:17,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:17,395 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-11-28 02:57:17,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:57:17,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-11-28 02:57:17,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829009178] [2020-11-28 02:57:17,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 02:57:17,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:17,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 02:57:17,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:17,410 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. Second operand 3 states. [2020-11-28 02:57:17,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:17,682 INFO L93 Difference]: Finished difference Result 81 states and 106 transitions. [2020-11-28 02:57:17,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 02:57:17,684 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-11-28 02:57:17,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:17,685 INFO L225 Difference]: With dead ends: 81 [2020-11-28 02:57:17,685 INFO L226 Difference]: Without dead ends: 58 [2020-11-28 02:57:17,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:17,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-28 02:57:17,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 47. [2020-11-28 02:57:17,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-28 02:57:17,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 63 transitions. [2020-11-28 02:57:17,693 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 63 transitions. Word has length 31 [2020-11-28 02:57:17,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:17,694 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 63 transitions. [2020-11-28 02:57:17,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 02:57:17,694 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 63 transitions. [2020-11-28 02:57:17,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-28 02:57:17,695 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:17,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:17,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:17,896 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:17,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:17,896 INFO L82 PathProgramCache]: Analyzing trace with hash -828492548, now seen corresponding path program 1 times [2020-11-28 02:57:17,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:17,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087159894] [2020-11-28 02:57:17,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:17,941 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 02:57:17,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087159894] [2020-11-28 02:57:17,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013867996] [2020-11-28 02:57:17,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6a4ba027-a9b0-4ccb-a5a7-b15c334206cb/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 [2020-11-28 02:57:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:17,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 02:57:18,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:18,027 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 02:57:18,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:57:18,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-11-28 02:57:18,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030828403] [2020-11-28 02:57:18,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:57:18,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:18,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:57:18,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:18,029 INFO L87 Difference]: Start difference. First operand 47 states and 63 transitions. Second operand 5 states. [2020-11-28 02:57:18,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:18,058 INFO L93 Difference]: Finished difference Result 92 states and 124 transitions. [2020-11-28 02:57:18,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:57:18,059 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-11-28 02:57:18,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:18,060 INFO L225 Difference]: With dead ends: 92 [2020-11-28 02:57:18,060 INFO L226 Difference]: Without dead ends: 50 [2020-11-28 02:57:18,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:18,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-28 02:57:18,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-11-28 02:57:18,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-28 02:57:18,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2020-11-28 02:57:18,071 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 31 [2020-11-28 02:57:18,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:18,071 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2020-11-28 02:57:18,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:57:18,071 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2020-11-28 02:57:18,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-28 02:57:18,073 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:18,073 INFO L422 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] [2020-11-28 02:57:18,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-28 02:57:18,276 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:18,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:18,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1808056250, now seen corresponding path program 2 times [2020-11-28 02:57:18,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:18,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260008507] [2020-11-28 02:57:18,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:18,324 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-28 02:57:18,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260008507] [2020-11-28 02:57:18,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899300904] [2020-11-28 02:57:18,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6a4ba027-a9b0-4ccb-a5a7-b15c334206cb/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 [2020-11-28 02:57:18,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-28 02:57:18,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:57:18,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-28 02:57:18,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:18,495 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-28 02:57:18,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:57:18,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2020-11-28 02:57:18,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997042238] [2020-11-28 02:57:18,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 02:57:18,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:18,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 02:57:18,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-11-28 02:57:18,497 INFO L87 Difference]: Start difference. First operand 49 states and 65 transitions. Second operand 8 states. [2020-11-28 02:57:18,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:18,672 INFO L93 Difference]: Finished difference Result 120 states and 149 transitions. [2020-11-28 02:57:18,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 02:57:18,676 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-11-28 02:57:18,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:18,677 INFO L225 Difference]: With dead ends: 120 [2020-11-28 02:57:18,677 INFO L226 Difference]: Without dead ends: 114 [2020-11-28 02:57:18,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-11-28 02:57:18,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-11-28 02:57:18,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 74. [2020-11-28 02:57:18,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-28 02:57:18,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 99 transitions. [2020-11-28 02:57:18,698 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 99 transitions. Word has length 33 [2020-11-28 02:57:18,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:18,699 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 99 transitions. [2020-11-28 02:57:18,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 02:57:18,699 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 99 transitions. [2020-11-28 02:57:18,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-28 02:57:18,701 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:18,701 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-11-28 02:57:18,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:18,902 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:18,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:18,902 INFO L82 PathProgramCache]: Analyzing trace with hash -883385759, now seen corresponding path program 1 times [2020-11-28 02:57:18,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:18,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507212422] [2020-11-28 02:57:18,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:18,960 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-28 02:57:18,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507212422] [2020-11-28 02:57:18,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648792739] [2020-11-28 02:57:18,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6a4ba027-a9b0-4ccb-a5a7-b15c334206cb/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 [2020-11-28 02:57:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:19,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 02:57:19,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:19,067 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-28 02:57:19,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 02:57:19,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2020-11-28 02:57:19,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923903820] [2020-11-28 02:57:19,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:57:19,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:19,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:57:19,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:57:19,069 INFO L87 Difference]: Start difference. First operand 74 states and 99 transitions. Second operand 7 states. [2020-11-28 02:57:19,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:19,196 INFO L93 Difference]: Finished difference Result 164 states and 223 transitions. [2020-11-28 02:57:19,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:57:19,198 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-11-28 02:57:19,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:19,200 INFO L225 Difference]: With dead ends: 164 [2020-11-28 02:57:19,200 INFO L226 Difference]: Without dead ends: 97 [2020-11-28 02:57:19,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:57:19,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-28 02:57:19,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 91. [2020-11-28 02:57:19,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-11-28 02:57:19,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 116 transitions. [2020-11-28 02:57:19,213 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 116 transitions. Word has length 36 [2020-11-28 02:57:19,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:19,214 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 116 transitions. [2020-11-28 02:57:19,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:57:19,214 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 116 transitions. [2020-11-28 02:57:19,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-28 02:57:19,216 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:19,216 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:19,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:19,439 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:19,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:19,440 INFO L82 PathProgramCache]: Analyzing trace with hash 984846308, now seen corresponding path program 2 times [2020-11-28 02:57:19,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:19,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782583178] [2020-11-28 02:57:19,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:19,470 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:19,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2030677192] [2020-11-28 02:57:19,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6a4ba027-a9b0-4ccb-a5a7-b15c334206cb/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 [2020-11-28 02:57:19,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 02:57:19,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:57:19,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 02:57:19,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:19,631 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-11-28 02:57:19,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782583178] [2020-11-28 02:57:19,631 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:19,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030677192] [2020-11-28 02:57:19,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:57:19,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-28 02:57:19,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625146706] [2020-11-28 02:57:19,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:57:19,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:19,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:57:19,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:57:19,633 INFO L87 Difference]: Start difference. First operand 91 states and 116 transitions. Second operand 6 states. [2020-11-28 02:57:19,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:19,665 INFO L93 Difference]: Finished difference Result 176 states and 226 transitions. [2020-11-28 02:57:19,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:57:19,666 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2020-11-28 02:57:19,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:19,667 INFO L225 Difference]: With dead ends: 176 [2020-11-28 02:57:19,669 INFO L226 Difference]: Without dead ends: 94 [2020-11-28 02:57:19,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:57:19,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-11-28 02:57:19,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-11-28 02:57:19,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-28 02:57:19,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 118 transitions. [2020-11-28 02:57:19,686 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 118 transitions. Word has length 47 [2020-11-28 02:57:19,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:19,686 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 118 transitions. [2020-11-28 02:57:19,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:57:19,686 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 118 transitions. [2020-11-28 02:57:19,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-28 02:57:19,689 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:19,689 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:19,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-28 02:57:19,916 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:19,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:19,916 INFO L82 PathProgramCache]: Analyzing trace with hash 999874210, now seen corresponding path program 3 times [2020-11-28 02:57:19,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:19,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217776699] [2020-11-28 02:57:19,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:19,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:19,976 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-11-28 02:57:19,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217776699] [2020-11-28 02:57:19,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:19,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:57:19,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088194905] [2020-11-28 02:57:19,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:57:19,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:19,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:57:19,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:57:19,978 INFO L87 Difference]: Start difference. First operand 93 states and 118 transitions. Second operand 4 states. [2020-11-28 02:57:20,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:20,060 INFO L93 Difference]: Finished difference Result 179 states and 234 transitions. [2020-11-28 02:57:20,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:57:20,061 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-11-28 02:57:20,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:20,062 INFO L225 Difference]: With dead ends: 179 [2020-11-28 02:57:20,062 INFO L226 Difference]: Without dead ends: 109 [2020-11-28 02:57:20,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:57:20,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-28 02:57:20,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 84. [2020-11-28 02:57:20,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-11-28 02:57:20,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 100 transitions. [2020-11-28 02:57:20,070 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 100 transitions. Word has length 49 [2020-11-28 02:57:20,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:20,070 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 100 transitions. [2020-11-28 02:57:20,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:57:20,071 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 100 transitions. [2020-11-28 02:57:20,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-11-28 02:57:20,077 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:20,077 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 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] [2020-11-28 02:57:20,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 02:57:20,077 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:20,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:20,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1208175976, now seen corresponding path program 1 times [2020-11-28 02:57:20,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:20,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396562402] [2020-11-28 02:57:20,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:20,109 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:20,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [555361442] [2020-11-28 02:57:20,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6a4ba027-a9b0-4ccb-a5a7-b15c334206cb/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 [2020-11-28 02:57:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:20,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 02:57:20,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:20,244 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-11-28 02:57:20,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396562402] [2020-11-28 02:57:20,245 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:20,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555361442] [2020-11-28 02:57:20,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:57:20,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-28 02:57:20,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736873360] [2020-11-28 02:57:20,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:57:20,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:20,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:57:20,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:57:20,248 INFO L87 Difference]: Start difference. First operand 84 states and 100 transitions. Second operand 7 states. [2020-11-28 02:57:20,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:20,283 INFO L93 Difference]: Finished difference Result 159 states and 191 transitions. [2020-11-28 02:57:20,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:57:20,284 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2020-11-28 02:57:20,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:20,284 INFO L225 Difference]: With dead ends: 159 [2020-11-28 02:57:20,285 INFO L226 Difference]: Without dead ends: 86 [2020-11-28 02:57:20,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:57:20,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-11-28 02:57:20,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-11-28 02:57:20,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-11-28 02:57:20,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 102 transitions. [2020-11-28 02:57:20,293 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 102 transitions. Word has length 55 [2020-11-28 02:57:20,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:20,294 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 102 transitions. [2020-11-28 02:57:20,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:57:20,294 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 102 transitions. [2020-11-28 02:57:20,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-11-28 02:57:20,295 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:20,296 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 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] [2020-11-28 02:57:20,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:20,518 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:20,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:20,519 INFO L82 PathProgramCache]: Analyzing trace with hash -394370218, now seen corresponding path program 2 times [2020-11-28 02:57:20,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:20,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28061335] [2020-11-28 02:57:20,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:20,549 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:20,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2127896691] [2020-11-28 02:57:20,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6a4ba027-a9b0-4ccb-a5a7-b15c334206cb/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 [2020-11-28 02:57:20,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 02:57:20,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:57:20,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 02:57:20,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:20,939 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-11-28 02:57:20,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28061335] [2020-11-28 02:57:20,941 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:20,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127896691] [2020-11-28 02:57:20,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:57:20,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-28 02:57:20,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775284713] [2020-11-28 02:57:20,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:57:20,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:20,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:57:20,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:20,944 INFO L87 Difference]: Start difference. First operand 86 states and 102 transitions. Second operand 5 states. [2020-11-28 02:57:21,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:21,019 INFO L93 Difference]: Finished difference Result 168 states and 204 transitions. [2020-11-28 02:57:21,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:57:21,019 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-11-28 02:57:21,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:21,020 INFO L225 Difference]: With dead ends: 168 [2020-11-28 02:57:21,021 INFO L226 Difference]: Without dead ends: 101 [2020-11-28 02:57:21,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:21,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-11-28 02:57:21,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-11-28 02:57:21,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-11-28 02:57:21,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 117 transitions. [2020-11-28 02:57:21,031 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 117 transitions. Word has length 57 [2020-11-28 02:57:21,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:21,031 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 117 transitions. [2020-11-28 02:57:21,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:57:21,031 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 117 transitions. [2020-11-28 02:57:21,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-28 02:57:21,032 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:21,032 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 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] [2020-11-28 02:57:21,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:21,238 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:21,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:21,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1115957675, now seen corresponding path program 3 times [2020-11-28 02:57:21,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:21,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233527559] [2020-11-28 02:57:21,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:21,251 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:21,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [847615816] [2020-11-28 02:57:21,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6a4ba027-a9b0-4ccb-a5a7-b15c334206cb/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 [2020-11-28 02:57:21,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-28 02:57:21,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:57:21,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 02:57:21,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:21,369 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-11-28 02:57:21,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233527559] [2020-11-28 02:57:21,370 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:21,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847615816] [2020-11-28 02:57:21,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:21,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:57:21,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760878285] [2020-11-28 02:57:21,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:57:21,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:21,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:57:21,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:57:21,375 INFO L87 Difference]: Start difference. First operand 101 states and 117 transitions. Second operand 4 states. [2020-11-28 02:57:21,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:21,492 INFO L93 Difference]: Finished difference Result 134 states and 156 transitions. [2020-11-28 02:57:21,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:57:21,494 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-11-28 02:57:21,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:21,494 INFO L225 Difference]: With dead ends: 134 [2020-11-28 02:57:21,494 INFO L226 Difference]: Without dead ends: 76 [2020-11-28 02:57:21,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:57:21,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-11-28 02:57:21,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2020-11-28 02:57:21,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-11-28 02:57:21,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2020-11-28 02:57:21,500 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 66 [2020-11-28 02:57:21,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:21,500 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2020-11-28 02:57:21,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:57:21,501 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2020-11-28 02:57:21,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-28 02:57:21,501 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:21,502 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 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] [2020-11-28 02:57:21,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-28 02:57:21,718 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:21,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:21,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1249971181, now seen corresponding path program 1 times [2020-11-28 02:57:21,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:21,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183852756] [2020-11-28 02:57:21,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:21,730 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:21,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [193355820] [2020-11-28 02:57:21,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6a4ba027-a9b0-4ccb-a5a7-b15c334206cb/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 [2020-11-28 02:57:21,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:21,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 02:57:21,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:21,863 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-11-28 02:57:21,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183852756] [2020-11-28 02:57:21,863 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:21,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193355820] [2020-11-28 02:57:21,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:57:21,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-28 02:57:21,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193515344] [2020-11-28 02:57:21,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 02:57:21,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:21,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 02:57:21,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:57:21,866 INFO L87 Difference]: Start difference. First operand 67 states and 74 transitions. Second operand 7 states. [2020-11-28 02:57:22,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:22,011 INFO L93 Difference]: Finished difference Result 116 states and 133 transitions. [2020-11-28 02:57:22,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:57:22,011 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2020-11-28 02:57:22,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:22,012 INFO L225 Difference]: With dead ends: 116 [2020-11-28 02:57:22,012 INFO L226 Difference]: Without dead ends: 76 [2020-11-28 02:57:22,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-28 02:57:22,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-11-28 02:57:22,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-11-28 02:57:22,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-28 02:57:22,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2020-11-28 02:57:22,018 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 66 [2020-11-28 02:57:22,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:22,018 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2020-11-28 02:57:22,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 02:57:22,019 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2020-11-28 02:57:22,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-11-28 02:57:22,023 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:22,023 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 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] [2020-11-28 02:57:22,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-28 02:57:22,235 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:22,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:22,236 INFO L82 PathProgramCache]: Analyzing trace with hash -2135390482, now seen corresponding path program 2 times [2020-11-28 02:57:22,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:22,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481936656] [2020-11-28 02:57:22,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:22,249 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:22,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1222248410] [2020-11-28 02:57:22,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6a4ba027-a9b0-4ccb-a5a7-b15c334206cb/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 [2020-11-28 02:57:22,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 02:57:22,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:57:22,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 02:57:22,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:22,386 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-11-28 02:57:22,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481936656] [2020-11-28 02:57:22,387 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:22,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222248410] [2020-11-28 02:57:22,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:57:22,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-11-28 02:57:22,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050808830] [2020-11-28 02:57:22,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:57:22,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:22,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:57:22,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:57:22,389 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand 4 states. [2020-11-28 02:57:22,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:22,407 INFO L93 Difference]: Finished difference Result 102 states and 115 transitions. [2020-11-28 02:57:22,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:57:22,408 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-11-28 02:57:22,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:22,409 INFO L225 Difference]: With dead ends: 102 [2020-11-28 02:57:22,409 INFO L226 Difference]: Without dead ends: 79 [2020-11-28 02:57:22,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:57:22,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-11-28 02:57:22,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2020-11-28 02:57:22,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-11-28 02:57:22,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions. [2020-11-28 02:57:22,416 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 75 [2020-11-28 02:57:22,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:22,418 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 88 transitions. [2020-11-28 02:57:22,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:57:22,418 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions. [2020-11-28 02:57:22,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-11-28 02:57:22,424 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:22,424 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:22,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-28 02:57:22,625 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:22,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:22,626 INFO L82 PathProgramCache]: Analyzing trace with hash 949517612, now seen corresponding path program 3 times [2020-11-28 02:57:22,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:22,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39793706] [2020-11-28 02:57:22,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:22,646 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:22,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1213666864] [2020-11-28 02:57:22,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6a4ba027-a9b0-4ccb-a5a7-b15c334206cb/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 [2020-11-28 02:57:22,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-28 02:57:22,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:57:22,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 02:57:22,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:23,022 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-11-28 02:57:23,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39793706] [2020-11-28 02:57:23,023 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:23,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213666864] [2020-11-28 02:57:23,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:57:23,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-28 02:57:23,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729337585] [2020-11-28 02:57:23,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:57:23,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:23,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:57:23,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:23,029 INFO L87 Difference]: Start difference. First operand 78 states and 88 transitions. Second operand 5 states. [2020-11-28 02:57:23,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:23,055 INFO L93 Difference]: Finished difference Result 104 states and 117 transitions. [2020-11-28 02:57:23,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:57:23,055 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-11-28 02:57:23,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:23,056 INFO L225 Difference]: With dead ends: 104 [2020-11-28 02:57:23,056 INFO L226 Difference]: Without dead ends: 81 [2020-11-28 02:57:23,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:23,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-11-28 02:57:23,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2020-11-28 02:57:23,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-11-28 02:57:23,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2020-11-28 02:57:23,062 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 77 [2020-11-28 02:57:23,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:23,062 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2020-11-28 02:57:23,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:57:23,063 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2020-11-28 02:57:23,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-11-28 02:57:23,064 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:23,064 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 3, 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] [2020-11-28 02:57:23,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:23,264 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:23,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:23,265 INFO L82 PathProgramCache]: Analyzing trace with hash 2018761706, now seen corresponding path program 4 times [2020-11-28 02:57:23,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:23,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501714643] [2020-11-28 02:57:23,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:23,276 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:23,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1033815175] [2020-11-28 02:57:23,276 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6a4ba027-a9b0-4ccb-a5a7-b15c334206cb/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 [2020-11-28 02:57:23,362 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-28 02:57:23,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:57:23,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 02:57:23,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:23,431 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2020-11-28 02:57:23,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501714643] [2020-11-28 02:57:23,431 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:23,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033815175] [2020-11-28 02:57:23,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:57:23,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-28 02:57:23,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238999095] [2020-11-28 02:57:23,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:57:23,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:23,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:57:23,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:57:23,434 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand 6 states. [2020-11-28 02:57:23,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:23,458 INFO L93 Difference]: Finished difference Result 105 states and 118 transitions. [2020-11-28 02:57:23,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:57:23,461 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 79 [2020-11-28 02:57:23,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:23,462 INFO L225 Difference]: With dead ends: 105 [2020-11-28 02:57:23,462 INFO L226 Difference]: Without dead ends: 82 [2020-11-28 02:57:23,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:57:23,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-11-28 02:57:23,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-11-28 02:57:23,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-11-28 02:57:23,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2020-11-28 02:57:23,466 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 79 [2020-11-28 02:57:23,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:23,467 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2020-11-28 02:57:23,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:57:23,467 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2020-11-28 02:57:23,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-28 02:57:23,467 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:23,468 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:23,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-28 02:57:23,668 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 02:57:23,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:23,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1229815000, now seen corresponding path program 5 times [2020-11-28 02:57:23,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:23,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709648188] [2020-11-28 02:57:23,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:23,678 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:23,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [370987471] [2020-11-28 02:57:23,679 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6a4ba027-a9b0-4ccb-a5a7-b15c334206cb/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 [2020-11-28 02:57:24,035 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-28 02:57:24,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-11-28 02:57:24,035 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 02:57:24,180 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 02:57:24,310 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 02:57:24,310 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 02:57:24,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-28 02:57:24,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:57:24 BoogieIcfgContainer [2020-11-28 02:57:24,623 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:57:24,623 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:57:24,623 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:57:24,624 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:57:24,624 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:15" (3/4) ... [2020-11-28 02:57:24,628 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 02:57:24,744 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6a4ba027-a9b0-4ccb-a5a7-b15c334206cb/bin/uautomizer/witness.graphml [2020-11-28 02:57:24,745 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:57:24,746 INFO L168 Benchmark]: Toolchain (without parser) took 10312.84 ms. Allocated memory was 113.2 MB in the beginning and 146.8 MB in the end (delta: 33.6 MB). Free memory was 76.6 MB in the beginning and 54.4 MB in the end (delta: 22.2 MB). Peak memory consumption was 56.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:24,747 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 113.2 MB. Free memory was 93.3 MB in the beginning and 93.2 MB in the end (delta: 65.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:24,747 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.79 ms. Allocated memory is still 113.2 MB. Free memory was 76.4 MB in the beginning and 89.5 MB in the end (delta: -13.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:24,747 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.36 ms. Allocated memory is still 113.2 MB. Free memory was 89.5 MB in the beginning and 87.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:24,748 INFO L168 Benchmark]: Boogie Preprocessor took 31.12 ms. Allocated memory is still 113.2 MB. Free memory was 87.5 MB in the beginning and 86.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:24,748 INFO L168 Benchmark]: RCFGBuilder took 493.80 ms. Allocated memory is still 113.2 MB. Free memory was 86.1 MB in the beginning and 67.2 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:24,749 INFO L168 Benchmark]: TraceAbstraction took 9343.58 ms. Allocated memory was 113.2 MB in the beginning and 146.8 MB in the end (delta: 33.6 MB). Free memory was 66.8 MB in the beginning and 61.8 MB in the end (delta: 5.1 MB). Peak memory consumption was 40.0 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:24,749 INFO L168 Benchmark]: Witness Printer took 121.42 ms. Allocated memory is still 146.8 MB. Free memory was 61.8 MB in the beginning and 54.4 MB in the end (delta: 7.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:24,751 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 113.2 MB. Free memory was 93.3 MB in the beginning and 93.2 MB in the end (delta: 65.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 267.79 ms. Allocated memory is still 113.2 MB. Free memory was 76.4 MB in the beginning and 89.5 MB in the end (delta: -13.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.36 ms. Allocated memory is still 113.2 MB. Free memory was 89.5 MB in the beginning and 87.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.12 ms. Allocated memory is still 113.2 MB. Free memory was 87.5 MB in the beginning and 86.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 493.80 ms. Allocated memory is still 113.2 MB. Free memory was 86.1 MB in the beginning and 67.2 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9343.58 ms. Allocated memory was 113.2 MB in the beginning and 146.8 MB in the end (delta: 33.6 MB). Free memory was 66.8 MB in the beginning and 61.8 MB in the end (delta: 5.1 MB). Peak memory consumption was 40.0 MB. Max. memory is 16.1 GB. * Witness Printer took 121.42 ms. Allocated memory is still 146.8 MB. Free memory was 61.8 MB in the beginning and 54.4 MB in the end (delta: 7.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L42] int x[5]; [L16] int i; [L17] i = 0 [L17] COND TRUE i < 5 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 5 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 5 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 5 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND TRUE i < 5 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ [L17] COND FALSE !(i < 5) [L44] int temp; [L45] int ret; [L46] int ret2; [L47] int ret5; [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 [L28] COND TRUE i < 5 [L29] COND FALSE !(i > 5/2) [L28] i++ [L28] COND TRUE i < 5 [L29] COND FALSE !(i > 5/2) [L28] i++ [L28] COND TRUE i < 5 [L29] COND FALSE !(i > 5/2) [L28] i++ [L28] COND TRUE i < 5 [L29] COND TRUE i > 5/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 5 [L29] COND TRUE i > 5/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND FALSE !(i < 5) [L34] COND TRUE cnt !=0 [L35] return ret / cnt; [L49] ret = rangesum(x) [L51] EXPR x[0] [L51] temp=x[0] [L51] EXPR x[1] [L51] x[0] = x[1] [L51] x[1] = temp [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 [L28] COND TRUE i < 5 [L29] COND FALSE !(i > 5/2) [L28] i++ [L28] COND TRUE i < 5 [L29] COND FALSE !(i > 5/2) [L28] i++ [L28] COND TRUE i < 5 [L29] COND FALSE !(i > 5/2) [L28] i++ [L28] COND TRUE i < 5 [L29] COND TRUE i > 5/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 5 [L29] COND TRUE i > 5/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND FALSE !(i < 5) [L34] COND TRUE cnt !=0 [L35] return ret / cnt; [L52] ret2 = rangesum(x) [L53] EXPR x[0] [L53] temp=x[0] [L54] int i =0 ; [L54] COND TRUE i<5 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<5 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<5 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND TRUE i<5 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ [L54] COND FALSE !(i<5 -1) [L57] x[5 -1] = temp [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 [L28] COND TRUE i < 5 [L29] COND FALSE !(i > 5/2) [L28] i++ [L28] COND TRUE i < 5 [L29] COND FALSE !(i > 5/2) [L28] i++ [L28] COND TRUE i < 5 [L29] COND FALSE !(i > 5/2) [L28] i++ [L28] COND TRUE i < 5 [L29] COND TRUE i > 5/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND TRUE i < 5 [L29] COND TRUE i > 5/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 [L28] i++ [L28] COND FALSE !(i < 5) [L34] COND TRUE cnt !=0 [L35] return ret / cnt; [L58] ret5 = rangesum(x) [L60] COND TRUE ret != ret2 || ret !=ret5 [L12] COND FALSE !(0) [L12] __assert_fail ("0", "rangesum05.c", 18, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.1s, OverallIterations: 18, TraceHistogramMax: 5, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 544 SDtfs, 254 SDslu, 789 SDs, 0 SdLazy, 371 SolverSat, 117 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 736 GetRequests, 679 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 17 MinimizatonAttempts, 100 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 1048 NumberOfCodeBlocks, 965 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 944 ConstructedInterpolants, 0 QuantifiedInterpolants, 60750 SizeOfPredicates, 18 NumberOfNonLiveVariables, 2591 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 23 InterpolantComputations, 8 PerfectInterpolantSequences, 765/844 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...