./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/sum04-2.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_e8224519-0d67-4cc3-95dd-d092727035eb/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e8224519-0d67-4cc3-95dd-d092727035eb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e8224519-0d67-4cc3-95dd-d092727035eb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e8224519-0d67-4cc3-95dd-d092727035eb/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/sum04-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e8224519-0d67-4cc3-95dd-d092727035eb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e8224519-0d67-4cc3-95dd-d092727035eb/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 e4783c6ee2901b631023e80ae57ac531c222bf81 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:18:34,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:18:34,303 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:18:34,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:18:34,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:18:34,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:18:34,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:18:34,388 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:18:34,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:18:34,391 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:18:34,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:18:34,393 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:18:34,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:18:34,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:18:34,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:18:34,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:18:34,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:18:34,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:18:34,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:18:34,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:18:34,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:18:34,410 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:18:34,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:18:34,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:18:34,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:18:34,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:18:34,416 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:18:34,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:18:34,418 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:18:34,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:18:34,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:18:34,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:18:34,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:18:34,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:18:34,424 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:18:34,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:18:34,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:18:34,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:18:34,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:18:34,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:18:34,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:18:34,429 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e8224519-0d67-4cc3-95dd-d092727035eb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:18:34,454 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:18:34,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:18:34,455 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:18:34,456 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:18:34,456 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:18:34,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:18:34,456 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:18:34,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:18:34,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:18:34,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:18:34,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:18:34,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:18:34,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:18:34,458 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:18:34,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:18:34,458 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:18:34,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:18:34,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:18:34,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:18:34,459 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:18:34,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:18:34,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:18:34,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:18:34,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:18:34,460 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:18:34,460 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:18:34,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:18:34,461 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:18:34,461 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:18:34,461 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_e8224519-0d67-4cc3-95dd-d092727035eb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e8224519-0d67-4cc3-95dd-d092727035eb/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4783c6ee2901b631023e80ae57ac531c222bf81 [2020-11-28 03:18:34,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:18:34,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:18:34,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:18:34,797 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:18:34,802 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:18:34,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e8224519-0d67-4cc3-95dd-d092727035eb/bin/uautomizer/../../sv-benchmarks/c/loops/sum04-2.i [2020-11-28 03:18:34,872 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e8224519-0d67-4cc3-95dd-d092727035eb/bin/uautomizer/data/4e4fcfd6c/fefa9d1ba0b449bd8caa6c71da9dfae2/FLAG6cd5def5d [2020-11-28 03:18:35,332 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:18:35,333 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e8224519-0d67-4cc3-95dd-d092727035eb/sv-benchmarks/c/loops/sum04-2.i [2020-11-28 03:18:35,344 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e8224519-0d67-4cc3-95dd-d092727035eb/bin/uautomizer/data/4e4fcfd6c/fefa9d1ba0b449bd8caa6c71da9dfae2/FLAG6cd5def5d [2020-11-28 03:18:35,714 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e8224519-0d67-4cc3-95dd-d092727035eb/bin/uautomizer/data/4e4fcfd6c/fefa9d1ba0b449bd8caa6c71da9dfae2 [2020-11-28 03:18:35,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:18:35,719 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:18:35,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:18:35,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:18:35,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:18:35,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:18:35" (1/1) ... [2020-11-28 03:18:35,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67734dc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:35, skipping insertion in model container [2020-11-28 03:18:35,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:18:35" (1/1) ... [2020-11-28 03:18:35,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:18:35,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:18:36,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:18:36,033 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:18:36,051 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:18:36,069 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:18:36,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:36 WrapperNode [2020-11-28 03:18:36,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:18:36,071 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:18:36,072 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:18:36,072 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:18:36,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:36" (1/1) ... [2020-11-28 03:18:36,093 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:36" (1/1) ... [2020-11-28 03:18:36,114 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:18:36,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:18:36,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:18:36,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:18:36,126 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:36" (1/1) ... [2020-11-28 03:18:36,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:36" (1/1) ... [2020-11-28 03:18:36,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:36" (1/1) ... [2020-11-28 03:18:36,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:36" (1/1) ... [2020-11-28 03:18:36,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:36" (1/1) ... [2020-11-28 03:18:36,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:36" (1/1) ... [2020-11-28 03:18:36,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:36" (1/1) ... [2020-11-28 03:18:36,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:18:36,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:18:36,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:18:36,141 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:18:36,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e8224519-0d67-4cc3-95dd-d092727035eb/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 03:18:36,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:18:36,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:18:36,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:18:36,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:18:36,644 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:18:36,644 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 03:18:36,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:18:36 BoogieIcfgContainer [2020-11-28 03:18:36,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:18:36,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:18:36,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:18:36,653 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:18:36,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:18:35" (1/3) ... [2020-11-28 03:18:36,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ede439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:18:36, skipping insertion in model container [2020-11-28 03:18:36,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:36" (2/3) ... [2020-11-28 03:18:36,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27ede439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:18:36, skipping insertion in model container [2020-11-28 03:18:36,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:18:36" (3/3) ... [2020-11-28 03:18:36,657 INFO L111 eAbstractionObserver]: Analyzing ICFG sum04-2.i [2020-11-28 03:18:36,671 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:18:36,676 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:18:36,691 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:18:36,720 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:18:36,720 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:18:36,720 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:18:36,720 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:18:36,720 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:18:36,721 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:18:36,721 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:18:36,725 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:18:36,744 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-28 03:18:36,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:18:36,750 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:36,751 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:36,752 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:18:36,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:36,764 INFO L82 PathProgramCache]: Analyzing trace with hash 211949486, now seen corresponding path program 1 times [2020-11-28 03:18:36,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:36,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416633232] [2020-11-28 03:18:36,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:37,001 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 03:18:37,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416633232] [2020-11-28 03:18:37,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:37,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:18:37,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535459741] [2020-11-28 03:18:37,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:18:37,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:37,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:18:37,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:18:37,035 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2020-11-28 03:18:37,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:37,100 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2020-11-28 03:18:37,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:18:37,103 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-28 03:18:37,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:37,116 INFO L225 Difference]: With dead ends: 25 [2020-11-28 03:18:37,117 INFO L226 Difference]: Without dead ends: 12 [2020-11-28 03:18:37,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 03:18:37,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-28 03:18:37,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2020-11-28 03:18:37,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-28 03:18:37,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-11-28 03:18:37,185 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2020-11-28 03:18:37,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:37,186 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-11-28 03:18:37,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:18:37,187 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-11-28 03:18:37,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:18:37,188 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:37,188 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:37,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:18:37,189 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:18:37,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:37,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1435847344, now seen corresponding path program 1 times [2020-11-28 03:18:37,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:37,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853704651] [2020-11-28 03:18:37,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:37,308 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 03:18:37,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853704651] [2020-11-28 03:18:37,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522326502] [2020-11-28 03:18:37,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e8224519-0d67-4cc3-95dd-d092727035eb/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 03:18:37,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:37,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 03:18:37,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:37,448 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 03:18:37,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:18:37,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-11-28 03:18:37,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970384321] [2020-11-28 03:18:37,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:18:37,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:37,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:18:37,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:18:37,452 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 5 states. [2020-11-28 03:18:37,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:37,488 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-11-28 03:18:37,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:18:37,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-28 03:18:37,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:37,489 INFO L225 Difference]: With dead ends: 20 [2020-11-28 03:18:37,489 INFO L226 Difference]: Without dead ends: 14 [2020-11-28 03:18:37,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 03:18:37,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-28 03:18:37,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2020-11-28 03:18:37,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-28 03:18:37,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-11-28 03:18:37,494 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2020-11-28 03:18:37,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:37,494 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-11-28 03:18:37,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:18:37,495 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-11-28 03:18:37,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:18:37,495 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:37,495 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:37,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 03:18:37,713 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:18:37,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:37,714 INFO L82 PathProgramCache]: Analyzing trace with hash 780649778, now seen corresponding path program 2 times [2020-11-28 03:18:37,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:37,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000767601] [2020-11-28 03:18:37,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:37,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:37,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:37,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000767601] [2020-11-28 03:18:37,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641684981] [2020-11-28 03:18:37,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e8224519-0d67-4cc3-95dd-d092727035eb/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 03:18:37,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:18:37,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:18:37,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:18:37,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:37,904 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:37,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:18:37,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-28 03:18:37,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131136400] [2020-11-28 03:18:37,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:18:37,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:37,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:18:37,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:18:37,913 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 6 states. [2020-11-28 03:18:37,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:37,940 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-11-28 03:18:37,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:18:37,941 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-11-28 03:18:37,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:37,942 INFO L225 Difference]: With dead ends: 22 [2020-11-28 03:18:37,942 INFO L226 Difference]: Without dead ends: 16 [2020-11-28 03:18:37,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:18:37,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-28 03:18:37,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-11-28 03:18:37,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-28 03:18:37,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-11-28 03:18:37,946 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2020-11-28 03:18:37,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:37,947 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-11-28 03:18:37,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:18:37,947 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-11-28 03:18:37,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:18:37,947 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:37,948 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:38,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:18:38,166 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:18:38,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:38,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1798985932, now seen corresponding path program 3 times [2020-11-28 03:18:38,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:38,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503007417] [2020-11-28 03:18:38,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:38,290 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:38,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503007417] [2020-11-28 03:18:38,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624126517] [2020-11-28 03:18:38,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e8224519-0d67-4cc3-95dd-d092727035eb/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 03:18:38,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-28 03:18:38,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:18:38,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:18:38,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:38,383 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:38,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:18:38,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-11-28 03:18:38,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425548652] [2020-11-28 03:18:38,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:18:38,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:38,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:18:38,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:18:38,388 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 7 states. [2020-11-28 03:18:38,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:38,423 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-11-28 03:18:38,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:18:38,425 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-11-28 03:18:38,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:38,425 INFO L225 Difference]: With dead ends: 24 [2020-11-28 03:18:38,426 INFO L226 Difference]: Without dead ends: 18 [2020-11-28 03:18:38,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:18:38,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-28 03:18:38,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-11-28 03:18:38,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-28 03:18:38,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-11-28 03:18:38,429 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2020-11-28 03:18:38,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:38,430 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-11-28 03:18:38,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:18:38,430 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-11-28 03:18:38,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:18:38,431 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:38,431 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:38,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:18:38,641 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:18:38,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:38,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1662193846, now seen corresponding path program 4 times [2020-11-28 03:18:38,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:38,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387435314] [2020-11-28 03:18:38,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:38,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:38,704 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:38,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387435314] [2020-11-28 03:18:38,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970671111] [2020-11-28 03:18:38,704 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e8224519-0d67-4cc3-95dd-d092727035eb/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 03:18:38,742 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-28 03:18:38,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:18:38,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:18:38,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:38,788 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:38,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:18:38,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-11-28 03:18:38,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460906292] [2020-11-28 03:18:38,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:18:38,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:38,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:18:38,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:18:38,791 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 8 states. [2020-11-28 03:18:38,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:38,854 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-11-28 03:18:38,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:18:38,854 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-11-28 03:18:38,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:38,855 INFO L225 Difference]: With dead ends: 26 [2020-11-28 03:18:38,855 INFO L226 Difference]: Without dead ends: 20 [2020-11-28 03:18:38,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:18:38,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-28 03:18:38,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-11-28 03:18:38,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-28 03:18:38,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-11-28 03:18:38,860 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2020-11-28 03:18:38,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:38,860 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-11-28 03:18:38,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:18:38,860 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-11-28 03:18:38,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:18:38,861 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:38,861 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:39,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:18:39,067 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:18:39,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:39,067 INFO L82 PathProgramCache]: Analyzing trace with hash -743693896, now seen corresponding path program 5 times [2020-11-28 03:18:39,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:39,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54557077] [2020-11-28 03:18:39,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:39,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:39,150 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:39,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54557077] [2020-11-28 03:18:39,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816367034] [2020-11-28 03:18:39,151 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e8224519-0d67-4cc3-95dd-d092727035eb/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 03:18:39,190 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-28 03:18:39,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:18:39,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:18:39,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:39,228 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:39,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:18:39,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-11-28 03:18:39,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229731376] [2020-11-28 03:18:39,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 03:18:39,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:39,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:18:39,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:18:39,230 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 9 states. [2020-11-28 03:18:39,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:39,274 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-11-28 03:18:39,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:18:39,275 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-11-28 03:18:39,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:39,276 INFO L225 Difference]: With dead ends: 28 [2020-11-28 03:18:39,276 INFO L226 Difference]: Without dead ends: 22 [2020-11-28 03:18:39,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:18:39,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-28 03:18:39,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-11-28 03:18:39,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-28 03:18:39,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-11-28 03:18:39,280 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2020-11-28 03:18:39,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:39,280 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-11-28 03:18:39,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 03:18:39,280 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-11-28 03:18:39,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 03:18:39,281 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:39,284 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:39,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-28 03:18:39,485 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:18:39,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:39,485 INFO L82 PathProgramCache]: Analyzing trace with hash -2109408710, now seen corresponding path program 6 times [2020-11-28 03:18:39,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:39,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076358098] [2020-11-28 03:18:39,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:39,597 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:39,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076358098] [2020-11-28 03:18:39,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789731712] [2020-11-28 03:18:39,597 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e8224519-0d67-4cc3-95dd-d092727035eb/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 03:18:39,657 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-11-28 03:18:39,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:18:39,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:18:39,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:39,693 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:39,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:18:39,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-11-28 03:18:39,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997051907] [2020-11-28 03:18:39,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 03:18:39,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:39,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 03:18:39,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:18:39,695 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 10 states. [2020-11-28 03:18:39,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:39,748 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2020-11-28 03:18:39,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:18:39,749 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-11-28 03:18:39,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:39,750 INFO L225 Difference]: With dead ends: 30 [2020-11-28 03:18:39,750 INFO L226 Difference]: Without dead ends: 24 [2020-11-28 03:18:39,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:18:39,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-28 03:18:39,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-11-28 03:18:39,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-28 03:18:39,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-11-28 03:18:39,754 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2020-11-28 03:18:39,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:39,754 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-11-28 03:18:39,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 03:18:39,755 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-11-28 03:18:39,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 03:18:39,755 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:39,755 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:39,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:18:39,956 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:18:39,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:39,957 INFO L82 PathProgramCache]: Analyzing trace with hash -301352388, now seen corresponding path program 7 times [2020-11-28 03:18:39,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:39,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893692872] [2020-11-28 03:18:39,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:40,073 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:40,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893692872] [2020-11-28 03:18:40,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963909140] [2020-11-28 03:18:40,074 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e8224519-0d67-4cc3-95dd-d092727035eb/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 03:18:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:40,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 03:18:40,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:40,163 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:40,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:18:40,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-11-28 03:18:40,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129145771] [2020-11-28 03:18:40,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-28 03:18:40,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:40,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-28 03:18:40,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:18:40,169 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 11 states. [2020-11-28 03:18:40,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:40,214 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-11-28 03:18:40,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:18:40,217 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2020-11-28 03:18:40,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:40,218 INFO L225 Difference]: With dead ends: 31 [2020-11-28 03:18:40,218 INFO L226 Difference]: Without dead ends: 25 [2020-11-28 03:18:40,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:18:40,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-28 03:18:40,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-28 03:18:40,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-28 03:18:40,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-11-28 03:18:40,223 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2020-11-28 03:18:40,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:40,223 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-11-28 03:18:40,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-28 03:18:40,223 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-11-28 03:18:40,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 03:18:40,224 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:40,224 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:40,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:18:40,425 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:18:40,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:40,425 INFO L82 PathProgramCache]: Analyzing trace with hash 2073985470, now seen corresponding path program 8 times [2020-11-28 03:18:40,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:40,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851925438] [2020-11-28 03:18:40,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:40,618 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:40,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851925438] [2020-11-28 03:18:40,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766355746] [2020-11-28 03:18:40,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e8224519-0d67-4cc3-95dd-d092727035eb/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 03:18:40,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:18:40,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:18:40,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-28 03:18:40,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:40,779 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 03:18:40,827 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:40,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:18:40,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-11-28 03:18:40,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349369521] [2020-11-28 03:18:40,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-28 03:18:40,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:40,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 03:18:40,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:18:40,830 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 13 states. [2020-11-28 03:18:40,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:40,953 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-11-28 03:18:40,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-28 03:18:40,953 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2020-11-28 03:18:40,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:40,954 INFO L225 Difference]: With dead ends: 33 [2020-11-28 03:18:40,954 INFO L226 Difference]: Without dead ends: 27 [2020-11-28 03:18:40,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-11-28 03:18:40,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-28 03:18:40,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-28 03:18:40,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 03:18:40,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-11-28 03:18:40,961 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2020-11-28 03:18:40,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:40,962 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-11-28 03:18:40,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-28 03:18:40,962 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-11-28 03:18:40,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-28 03:18:40,963 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:40,963 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:41,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-28 03:18:41,185 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:18:41,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:41,186 INFO L82 PathProgramCache]: Analyzing trace with hash -148934464, now seen corresponding path program 9 times [2020-11-28 03:18:41,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:18:41,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924501988] [2020-11-28 03:18:41,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:18:41,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:41,313 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 66 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:41,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924501988] [2020-11-28 03:18:41,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231812704] [2020-11-28 03:18:41,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e8224519-0d67-4cc3-95dd-d092727035eb/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 03:18:41,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-11-28 03:18:41,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:18:41,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:18:41,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:41,409 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:18:41,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:18:41,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 12 [2020-11-28 03:18:41,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383518122] [2020-11-28 03:18:41,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-28 03:18:41,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:18:41,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-28 03:18:41,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:18:41,412 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 11 states. [2020-11-28 03:18:41,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:41,470 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-11-28 03:18:41,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-28 03:18:41,471 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2020-11-28 03:18:41,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:41,471 INFO L225 Difference]: With dead ends: 27 [2020-11-28 03:18:41,471 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:18:41,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=58, Invalid=74, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:18:41,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:18:41,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:18:41,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:18:41,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:18:41,473 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2020-11-28 03:18:41,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:41,473 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:18:41,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-28 03:18:41,473 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:18:41,473 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:18:41,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:18:41,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:18:41,926 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-11-28 03:18:41,936 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:18:41,936 INFO L274 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-11-28 03:18:41,936 INFO L277 CegarLoopResult]: At program point L15-2(lines 1 28) the Hoare annotation is: true [2020-11-28 03:18:41,936 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:18:41,936 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:18:41,936 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:18:41,937 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 03:18:41,937 INFO L274 CegarLoopResult]: For program point L24-2(lines 24 26) no Hoare annotation was computed. [2020-11-28 03:18:41,937 INFO L270 CegarLoopResult]: At program point L24-3(lines 24 26) the Hoare annotation is: (or (and (<= 2 ULTIMATE.start_main_~i~0) (<= 2 ULTIMATE.start_main_~sn~0) (<= ULTIMATE.start_main_~i~0 2) (<= ULTIMATE.start_main_~sn~0 2)) (and (<= 8 ULTIMATE.start_main_~i~0) (<= 14 ULTIMATE.start_main_~sn~0) (<= ULTIMATE.start_main_~sn~0 14) (<= ULTIMATE.start_main_~i~0 8)) (and (<= ULTIMATE.start_main_~i~0 3) (<= ULTIMATE.start_main_~sn~0 4) (<= 4 ULTIMATE.start_main_~sn~0) (<= 3 ULTIMATE.start_main_~i~0)) (and (<= ULTIMATE.start_main_~sn~0 12) (<= 12 ULTIMATE.start_main_~sn~0) (<= 7 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 7)) (and (= ULTIMATE.start_main_~i~0 1) (= ULTIMATE.start_main_~sn~0 0)) (and (<= ULTIMATE.start_main_~sn~0 16) (<= 9 ULTIMATE.start_main_~i~0) (< 15 ULTIMATE.start_main_~sn~0)) (and (<= ULTIMATE.start_main_~sn~0 6) (<= 6 ULTIMATE.start_main_~sn~0) (<= 4 ULTIMATE.start_main_~i~0) (<= ULTIMATE.start_main_~i~0 4)) (and (<= ULTIMATE.start_main_~i~0 5) (<= ULTIMATE.start_main_~sn~0 8) (<= 5 ULTIMATE.start_main_~i~0) (<= 8 ULTIMATE.start_main_~sn~0)) (and (<= 10 ULTIMATE.start_main_~sn~0) (<= ULTIMATE.start_main_~i~0 6) (<= ULTIMATE.start_main_~sn~0 10) (<= 6 ULTIMATE.start_main_~i~0))) [2020-11-28 03:18:41,937 INFO L274 CegarLoopResult]: For program point L24-4(lines 24 26) no Hoare annotation was computed. [2020-11-28 03:18:41,937 INFO L274 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-11-28 03:18:41,938 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-28 03:18:41,938 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-28 03:18:41,938 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-11-28 03:18:41,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:18:41 BoogieIcfgContainer [2020-11-28 03:18:41,972 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:18:41,973 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:18:41,973 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:18:41,973 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:18:41,974 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:18:36" (3/4) ... [2020-11-28 03:18:41,976 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:18:41,985 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 03:18:41,986 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:18:41,986 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:18:41,986 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:18:42,024 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e8224519-0d67-4cc3-95dd-d092727035eb/bin/uautomizer/witness.graphml [2020-11-28 03:18:42,024 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:18:42,025 INFO L168 Benchmark]: Toolchain (without parser) took 6306.12 ms. Allocated memory was 104.9 MB in the beginning and 161.5 MB in the end (delta: 56.6 MB). Free memory was 78.1 MB in the beginning and 119.8 MB in the end (delta: -41.7 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:42,029 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 104.9 MB. Free memory is still 61.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:18:42,030 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.45 ms. Allocated memory was 104.9 MB in the beginning and 134.2 MB in the end (delta: 29.4 MB). Free memory was 78.1 MB in the beginning and 111.6 MB in the end (delta: -33.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:42,031 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.78 ms. Allocated memory is still 134.2 MB. Free memory was 111.6 MB in the beginning and 110.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:18:42,031 INFO L168 Benchmark]: Boogie Preprocessor took 25.09 ms. Allocated memory is still 134.2 MB. Free memory was 110.5 MB in the beginning and 109.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:42,032 INFO L168 Benchmark]: RCFGBuilder took 505.81 ms. Allocated memory is still 134.2 MB. Free memory was 109.5 MB in the beginning and 98.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:42,032 INFO L168 Benchmark]: TraceAbstraction took 5323.78 ms. Allocated memory was 134.2 MB in the beginning and 161.5 MB in the end (delta: 27.3 MB). Free memory was 98.0 MB in the beginning and 121.9 MB in the end (delta: -23.9 MB). Peak memory consumption was 57.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:42,033 INFO L168 Benchmark]: Witness Printer took 51.11 ms. Allocated memory is still 161.5 MB. Free memory was 121.9 MB in the beginning and 119.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:42,038 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 104.9 MB. Free memory is still 61.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 349.45 ms. Allocated memory was 104.9 MB in the beginning and 134.2 MB in the end (delta: 29.4 MB). Free memory was 78.1 MB in the beginning and 111.6 MB in the end (delta: -33.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.78 ms. Allocated memory is still 134.2 MB. Free memory was 111.6 MB in the beginning and 110.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.09 ms. Allocated memory is still 134.2 MB. Free memory was 110.5 MB in the beginning and 109.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 505.81 ms. Allocated memory is still 134.2 MB. Free memory was 109.5 MB in the beginning and 98.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5323.78 ms. Allocated memory was 134.2 MB in the beginning and 161.5 MB in the end (delta: 27.3 MB). Free memory was 98.0 MB in the beginning and 121.9 MB in the end (delta: -23.9 MB). Peak memory consumption was 57.0 MB. Max. memory is 16.1 GB. * Witness Printer took 51.11 ms. Allocated memory is still 161.5 MB. Free memory was 121.9 MB in the beginning and 119.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: ((((((((((2 <= i && 2 <= sn) && i <= 2) && sn <= 2) || (((8 <= i && 14 <= sn) && sn <= 14) && i <= 8)) || (((i <= 3 && sn <= 4) && 4 <= sn) && 3 <= i)) || (((sn <= 12 && 12 <= sn) && 7 <= i) && i <= 7)) || (i == 1 && sn == 0)) || ((sn <= 16 && 9 <= i) && 15 < sn)) || (((sn <= 6 && 6 <= sn) && 4 <= i) && i <= 4)) || (((i <= 5 && sn <= 8) && 5 <= i) && 8 <= sn)) || (((10 <= sn && i <= 6) && sn <= 10) && 6 <= i) - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.9s, OverallIterations: 10, TraceHistogramMax: 9, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 84 SDtfs, 37 SDslu, 324 SDs, 0 SdLazy, 272 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 229 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 7 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 12 NumberOfFragments, 110 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 332 NumberOfCodeBlocks, 330 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 313 ConstructedInterpolants, 0 QuantifiedInterpolants, 16572 SizeOfPredicates, 10 NumberOfNonLiveVariables, 549 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 19 InterpolantComputations, 2 PerfectInterpolantSequences, 147/570 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 correct! Received shutdown request...