./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound1.c --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_27fb283a-a514-4628-bfd6-543877f00dba/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_27fb283a-a514-4628-bfd6-543877f00dba/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_27fb283a-a514-4628-bfd6-543877f00dba/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_27fb283a-a514-4628-bfd6-543877f00dba/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_27fb283a-a514-4628-bfd6-543877f00dba/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_27fb283a-a514-4628-bfd6-543877f00dba/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 1e5fcac2800fa481c87e1ba666bedec539f533fb .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:28:44,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:28:44,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:28:44,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:28:44,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:28:44,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:28:44,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:28:44,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:28:44,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:28:44,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:28:44,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:28:44,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:28:44,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:28:44,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:28:44,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:28:44,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:28:44,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:28:44,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:28:44,296 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:28:44,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:28:44,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:28:44,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:28:44,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:28:44,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:28:44,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:28:44,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:28:44,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:28:44,329 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:28:44,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:28:44,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:28:44,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:28:44,334 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:28:44,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:28:44,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:28:44,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:28:44,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:28:44,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:28:44,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:28:44,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:28:44,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:28:44,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:28:44,348 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_27fb283a-a514-4628-bfd6-543877f00dba/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 01:28:44,382 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:28:44,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:28:44,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:28:44,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:28:44,384 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:28:44,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:28:44,385 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:28:44,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:28:44,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:28:44,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:28:44,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:28:44,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:28:44,386 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:28:44,387 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:28:44,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:28:44,387 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:28:44,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:28:44,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:28:44,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:28:44,388 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:28:44,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:28:44,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:28:44,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:28:44,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:28:44,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:28:44,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:28:44,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:28:44,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:28:44,391 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:28:44,391 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_27fb283a-a514-4628-bfd6-543877f00dba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_27fb283a-a514-4628-bfd6-543877f00dba/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e5fcac2800fa481c87e1ba666bedec539f533fb [2020-11-30 01:28:44,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:28:44,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:28:44,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:28:44,764 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:28:44,772 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:28:44,773 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_27fb283a-a514-4628-bfd6-543877f00dba/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound1.c [2020-11-30 01:28:44,874 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_27fb283a-a514-4628-bfd6-543877f00dba/bin/uautomizer/data/fb4cf19e0/dc92779ceca04670a55cf0af738ba413/FLAG38238cefa [2020-11-30 01:28:45,444 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:28:45,445 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_27fb283a-a514-4628-bfd6-543877f00dba/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound1.c [2020-11-30 01:28:45,453 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_27fb283a-a514-4628-bfd6-543877f00dba/bin/uautomizer/data/fb4cf19e0/dc92779ceca04670a55cf0af738ba413/FLAG38238cefa [2020-11-30 01:28:45,786 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_27fb283a-a514-4628-bfd6-543877f00dba/bin/uautomizer/data/fb4cf19e0/dc92779ceca04670a55cf0af738ba413 [2020-11-30 01:28:45,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:28:45,791 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:28:45,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:28:45,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:28:45,800 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:28:45,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:28:45" (1/1) ... [2020-11-30 01:28:45,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c10796e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:45, skipping insertion in model container [2020-11-30 01:28:45,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:28:45" (1/1) ... [2020-11-30 01:28:45,813 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:28:45,835 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:28:46,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:28:46,056 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:28:46,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:28:46,107 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:28:46,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:46 WrapperNode [2020-11-30 01:28:46,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:28:46,114 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:28:46,115 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:28:46,115 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:28:46,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:46" (1/1) ... [2020-11-30 01:28:46,135 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:46" (1/1) ... [2020-11-30 01:28:46,165 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:28:46,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:28:46,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:28:46,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:28:46,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:46" (1/1) ... [2020-11-30 01:28:46,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:46" (1/1) ... [2020-11-30 01:28:46,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:46" (1/1) ... [2020-11-30 01:28:46,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:46" (1/1) ... [2020-11-30 01:28:46,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:46" (1/1) ... [2020-11-30 01:28:46,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:46" (1/1) ... [2020-11-30 01:28:46,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:46" (1/1) ... [2020-11-30 01:28:46,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:28:46,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:28:46,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:28:46,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:28:46,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27fb283a-a514-4628-bfd6-543877f00dba/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 [2020-11-30 01:28:46,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:28:46,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:28:46,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:28:46,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:28:46,704 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:28:46,705 INFO L298 CfgBuilder]: Removed 31 assume(true) statements. [2020-11-30 01:28:46,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:28:46 BoogieIcfgContainer [2020-11-30 01:28:46,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:28:46,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:28:46,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:28:46,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:28:46,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:28:45" (1/3) ... [2020-11-30 01:28:46,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d138d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:28:46, skipping insertion in model container [2020-11-30 01:28:46,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:46" (2/3) ... [2020-11-30 01:28:46,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d138d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:28:46, skipping insertion in model container [2020-11-30 01:28:46,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:28:46" (3/3) ... [2020-11-30 01:28:46,744 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_valuebound1.c [2020-11-30 01:28:46,756 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:28:46,761 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-30 01:28:46,779 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-30 01:28:46,803 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:28:46,803 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:28:46,803 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:28:46,804 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:28:46,804 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:28:46,804 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:28:46,804 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:28:46,804 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:28:46,821 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-30 01:28:46,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 01:28:46,827 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:46,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:28:46,828 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:46,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:46,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-11-30 01:28:46,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:46,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910175102] [2020-11-30 01:28:46,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:47,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:47,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910175102] [2020-11-30 01:28:47,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:47,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:28:47,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566311511] [2020-11-30 01:28:47,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:28:47,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:47,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:28:47,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:28:47,029 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-30 01:28:47,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:47,054 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2020-11-30 01:28:47,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:28:47,056 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-30 01:28:47,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:47,063 INFO L225 Difference]: With dead ends: 63 [2020-11-30 01:28:47,064 INFO L226 Difference]: Without dead ends: 29 [2020-11-30 01:28:47,066 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 [2020-11-30 01:28:47,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-30 01:28:47,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-30 01:28:47,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-30 01:28:47,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-11-30 01:28:47,102 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2020-11-30 01:28:47,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:47,102 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-11-30 01:28:47,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:28:47,102 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-11-30 01:28:47,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 01:28:47,103 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:47,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:28:47,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:28:47,104 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:47,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:47,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-11-30 01:28:47,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:47,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633969573] [2020-11-30 01:28:47,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:47,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:47,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633969573] [2020-11-30 01:28:47,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:47,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:28:47,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777025487] [2020-11-30 01:28:47,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:28:47,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:47,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:28:47,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:28:47,273 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 4 states. [2020-11-30 01:28:47,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:47,416 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-11-30 01:28:47,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:28:47,416 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-30 01:28:47,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:47,417 INFO L225 Difference]: With dead ends: 54 [2020-11-30 01:28:47,417 INFO L226 Difference]: Without dead ends: 50 [2020-11-30 01:28:47,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:28:47,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-30 01:28:47,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2020-11-30 01:28:47,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-30 01:28:47,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2020-11-30 01:28:47,428 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 7 [2020-11-30 01:28:47,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:47,428 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2020-11-30 01:28:47,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:28:47,428 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-11-30 01:28:47,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 01:28:47,429 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:47,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:28:47,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:28:47,430 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:47,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:47,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1186818322, now seen corresponding path program 1 times [2020-11-30 01:28:47,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:47,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696688507] [2020-11-30 01:28:47,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:47,452 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:28:47,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [576145795] [2020-11-30 01:28:47,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27fb283a-a514-4628-bfd6-543877f00dba/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 [2020-11-30 01:28:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:47,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 01:28:47,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:28:47,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:47,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696688507] [2020-11-30 01:28:47,604 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:28:47,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576145795] [2020-11-30 01:28:47,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:47,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:28:47,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496751872] [2020-11-30 01:28:47,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:28:47,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:47,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:28:47,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:28:47,609 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 4 states. [2020-11-30 01:28:47,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:47,773 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2020-11-30 01:28:47,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:28:47,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-30 01:28:47,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:47,776 INFO L225 Difference]: With dead ends: 50 [2020-11-30 01:28:47,776 INFO L226 Difference]: Without dead ends: 46 [2020-11-30 01:28:47,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:28:47,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-30 01:28:47,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-11-30 01:28:47,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-30 01:28:47,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2020-11-30 01:28:47,801 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 9 [2020-11-30 01:28:47,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:47,802 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2020-11-30 01:28:47,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:28:47,802 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2020-11-30 01:28:47,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 01:28:47,804 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:47,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:28:48,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-30 01:28:48,006 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:48,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:48,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1928706379, now seen corresponding path program 1 times [2020-11-30 01:28:48,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:48,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083803704] [2020-11-30 01:28:48,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:48,024 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:28:48,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [711895539] [2020-11-30 01:28:48,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27fb283a-a514-4628-bfd6-543877f00dba/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 [2020-11-30 01:28:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:48,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 01:28:48,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:28:48,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:48,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083803704] [2020-11-30 01:28:48,108 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:28:48,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711895539] [2020-11-30 01:28:48,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:48,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:28:48,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118633022] [2020-11-30 01:28:48,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:28:48,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:48,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:28:48,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:28:48,110 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 4 states. [2020-11-30 01:28:48,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:48,237 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2020-11-30 01:28:48,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:28:48,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-30 01:28:48,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:48,239 INFO L225 Difference]: With dead ends: 47 [2020-11-30 01:28:48,239 INFO L226 Difference]: Without dead ends: 37 [2020-11-30 01:28:48,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:28:48,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-30 01:28:48,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-11-30 01:28:48,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-30 01:28:48,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-11-30 01:28:48,247 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 11 [2020-11-30 01:28:48,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:48,247 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-11-30 01:28:48,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:28:48,247 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-11-30 01:28:48,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 01:28:48,248 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:48,248 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:28:48,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:28:48,449 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:48,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:48,450 INFO L82 PathProgramCache]: Analyzing trace with hash -13364102, now seen corresponding path program 1 times [2020-11-30 01:28:48,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:48,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922472958] [2020-11-30 01:28:48,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:48,473 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:28:48,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1977373729] [2020-11-30 01:28:48,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27fb283a-a514-4628-bfd6-543877f00dba/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 [2020-11-30 01:28:48,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:48,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 01:28:48,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:28:48,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:48,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922472958] [2020-11-30 01:28:48,566 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:28:48,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977373729] [2020-11-30 01:28:48,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:28:48,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-30 01:28:48,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899201449] [2020-11-30 01:28:48,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:28:48,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:48,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:28:48,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:28:48,568 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 5 states. [2020-11-30 01:28:48,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:48,694 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2020-11-30 01:28:48,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:28:48,694 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-30 01:28:48,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:48,695 INFO L225 Difference]: With dead ends: 61 [2020-11-30 01:28:48,695 INFO L226 Difference]: Without dead ends: 57 [2020-11-30 01:28:48,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:28:48,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-30 01:28:48,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2020-11-30 01:28:48,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-30 01:28:48,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-11-30 01:28:48,704 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 14 [2020-11-30 01:28:48,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:48,705 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-11-30 01:28:48,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:28:48,708 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-11-30 01:28:48,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 01:28:48,709 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:48,709 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:28:48,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:28:48,910 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:48,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:48,911 INFO L82 PathProgramCache]: Analyzing trace with hash 42186397, now seen corresponding path program 1 times [2020-11-30 01:28:48,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:48,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469476971] [2020-11-30 01:28:48,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:48,923 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:28:48,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [679636799] [2020-11-30 01:28:48,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27fb283a-a514-4628-bfd6-543877f00dba/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 [2020-11-30 01:28:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:48,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 01:28:48,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:28:49,030 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:49,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469476971] [2020-11-30 01:28:49,030 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:28:49,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679636799] [2020-11-30 01:28:49,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:28:49,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-30 01:28:49,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764137300] [2020-11-30 01:28:49,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:28:49,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:49,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:28:49,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:28:49,032 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 5 states. [2020-11-30 01:28:49,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:49,213 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2020-11-30 01:28:49,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:28:49,215 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-30 01:28:49,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:49,216 INFO L225 Difference]: With dead ends: 57 [2020-11-30 01:28:49,216 INFO L226 Difference]: Without dead ends: 53 [2020-11-30 01:28:49,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:28:49,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-30 01:28:49,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2020-11-30 01:28:49,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-30 01:28:49,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-11-30 01:28:49,233 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 16 [2020-11-30 01:28:49,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:49,234 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-11-30 01:28:49,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:28:49,234 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-11-30 01:28:49,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 01:28:49,235 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:49,236 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:28:49,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:28:49,457 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:49,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:49,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1886608768, now seen corresponding path program 1 times [2020-11-30 01:28:49,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:49,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726721958] [2020-11-30 01:28:49,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:49,476 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:28:49,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [336774635] [2020-11-30 01:28:49,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27fb283a-a514-4628-bfd6-543877f00dba/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 [2020-11-30 01:28:49,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:49,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 01:28:49,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:28:49,598 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:49,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726721958] [2020-11-30 01:28:49,598 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:28:49,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336774635] [2020-11-30 01:28:49,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:28:49,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-30 01:28:49,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550400607] [2020-11-30 01:28:49,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:28:49,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:49,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:28:49,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:28:49,600 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 5 states. [2020-11-30 01:28:49,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:49,725 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-11-30 01:28:49,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:28:49,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-30 01:28:49,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:49,730 INFO L225 Difference]: With dead ends: 54 [2020-11-30 01:28:49,730 INFO L226 Difference]: Without dead ends: 44 [2020-11-30 01:28:49,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:28:49,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-30 01:28:49,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-11-30 01:28:49,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-30 01:28:49,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2020-11-30 01:28:49,744 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 18 [2020-11-30 01:28:49,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:49,745 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2020-11-30 01:28:49,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:28:49,745 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2020-11-30 01:28:49,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 01:28:49,746 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:49,746 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-30 01:28:49,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-30 01:28:49,969 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:49,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:49,970 INFO L82 PathProgramCache]: Analyzing trace with hash 25658831, now seen corresponding path program 2 times [2020-11-30 01:28:49,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:49,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675946600] [2020-11-30 01:28:49,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:49,983 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:28:49,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [947327163] [2020-11-30 01:28:49,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27fb283a-a514-4628-bfd6-543877f00dba/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 [2020-11-30 01:28:50,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 01:28:50,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:28:50,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 01:28:50,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:28:50,122 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:50,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675946600] [2020-11-30 01:28:50,123 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:28:50,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947327163] [2020-11-30 01:28:50,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:28:50,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-30 01:28:50,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186555291] [2020-11-30 01:28:50,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:28:50,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:50,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:28:50,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:28:50,125 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 6 states. [2020-11-30 01:28:50,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:50,359 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2020-11-30 01:28:50,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 01:28:50,360 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-11-30 01:28:50,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:50,365 INFO L225 Difference]: With dead ends: 68 [2020-11-30 01:28:50,365 INFO L226 Difference]: Without dead ends: 64 [2020-11-30 01:28:50,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:28:50,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-11-30 01:28:50,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2020-11-30 01:28:50,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-30 01:28:50,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-11-30 01:28:50,376 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 21 [2020-11-30 01:28:50,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:50,376 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-11-30 01:28:50,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:28:50,377 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-11-30 01:28:50,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-30 01:28:50,378 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:50,378 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-30 01:28:50,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:28:50,601 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:50,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:50,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1111480654, now seen corresponding path program 2 times [2020-11-30 01:28:50,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:50,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507386542] [2020-11-30 01:28:50,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:50,615 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:28:50,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1142246169] [2020-11-30 01:28:50,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27fb283a-a514-4628-bfd6-543877f00dba/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 [2020-11-30 01:28:50,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 01:28:50,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:28:50,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 01:28:50,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:28:50,733 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-30 01:28:50,738 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:28:50,837 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:50,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507386542] [2020-11-30 01:28:50,837 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:28:50,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142246169] [2020-11-30 01:28:50,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:28:50,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-30 01:28:50,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30647313] [2020-11-30 01:28:50,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:28:50,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:50,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:28:50,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:28:50,841 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 6 states. [2020-11-30 01:28:51,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:51,022 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2020-11-30 01:28:51,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:28:51,024 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-11-30 01:28:51,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:51,024 INFO L225 Difference]: With dead ends: 52 [2020-11-30 01:28:51,024 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 01:28:51,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:28:51,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 01:28:51,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 01:28:51,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 01:28:51,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 01:28:51,026 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-11-30 01:28:51,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:51,026 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:28:51,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:28:51,027 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:28:51,027 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 01:28:51,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:28:51,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 01:28:51,586 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 23 [2020-11-30 01:28:51,821 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 23 [2020-11-30 01:28:51,997 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 23 [2020-11-30 01:28:52,003 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 01:28:52,003 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 01:28:52,003 INFO L277 CegarLoopResult]: At program point L48(lines 20 49) the Hoare annotation is: true [2020-11-30 01:28:52,003 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 01:28:52,003 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 01:28:52,003 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 01:28:52,003 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 01:28:52,004 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 01:28:52,004 INFO L274 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-11-30 01:28:52,004 INFO L270 CegarLoopResult]: At program point L12-1(lines 11 17) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= 0 ULTIMATE.start_main_~n~0)) (.cse2 (<= ULTIMATE.start_main_~n~0 1)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and (= ULTIMATE.start_main_~a~0 1) .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) .cse3) (and .cse0 .cse1 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) .cse2 .cse3 (= ULTIMATE.start_main_~t~0 1)))) [2020-11-30 01:28:52,004 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2020-11-30 01:28:52,004 INFO L270 CegarLoopResult]: At program point L12-3(lines 11 17) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= 0 ULTIMATE.start_main_~n~0)) (.cse2 (<= ULTIMATE.start_main_~n~0 1)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and (= ULTIMATE.start_main_~a~0 1) .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) .cse3) (and .cse0 .cse1 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) .cse2 .cse3 (= ULTIMATE.start_main_~t~0 1)))) [2020-11-30 01:28:52,005 INFO L274 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-11-30 01:28:52,005 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 15) no Hoare annotation was computed. [2020-11-30 01:28:52,005 INFO L270 CegarLoopResult]: At program point L12-5(lines 36 37) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= 0 ULTIMATE.start_main_~n~0)) (.cse2 (<= ULTIMATE.start_main_~n~0 1)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and (= ULTIMATE.start_main_~a~0 1) .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) .cse3) (and .cse0 .cse1 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) .cse2 .cse3 (= ULTIMATE.start_main_~t~0 1)))) [2020-11-30 01:28:52,005 INFO L274 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-11-30 01:28:52,005 INFO L270 CegarLoopResult]: At program point L12-7(lines 11 17) the Hoare annotation is: (let ((.cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (or (and .cse0 (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1))) (and .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)))) [2020-11-30 01:28:52,006 INFO L274 CegarLoopResult]: For program point L12-8(lines 12 15) no Hoare annotation was computed. [2020-11-30 01:28:52,006 INFO L270 CegarLoopResult]: At program point L12-9(lines 11 17) the Hoare annotation is: (let ((.cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (or (and .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~t~0 1)) (and .cse0 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1))))) [2020-11-30 01:28:52,006 INFO L274 CegarLoopResult]: For program point L12-10(lines 12 15) no Hoare annotation was computed. [2020-11-30 01:28:52,006 INFO L277 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: true [2020-11-30 01:28:52,006 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 01:28:52,006 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 01:28:52,006 INFO L274 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-11-30 01:28:52,007 INFO L274 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-11-30 01:28:52,007 INFO L274 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-11-30 01:28:52,007 INFO L274 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-11-30 01:28:52,007 INFO L274 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-11-30 01:28:52,007 INFO L274 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-11-30 01:28:52,007 INFO L274 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-11-30 01:28:52,007 INFO L270 CegarLoopResult]: At program point L30-2(lines 30 42) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~n~0)) (.cse1 (<= ULTIMATE.start_main_~n~0 1)) (.cse2 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and (= ULTIMATE.start_main_~a~0 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 .cse1 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) .cse2) (and .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) .cse1 .cse2 (= ULTIMATE.start_main_~t~0 1)))) [2020-11-30 01:28:52,008 INFO L274 CegarLoopResult]: For program point L30-3(lines 30 42) no Hoare annotation was computed. [2020-11-30 01:28:52,008 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 01:28:52,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:28:52 BoogieIcfgContainer [2020-11-30 01:28:52,057 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:28:52,058 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:28:52,058 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:28:52,059 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:28:52,059 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:28:46" (3/4) ... [2020-11-30 01:28:52,063 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 01:28:52,077 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-30 01:28:52,078 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 01:28:52,078 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:28:52,078 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:28:52,135 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_27fb283a-a514-4628-bfd6-543877f00dba/bin/uautomizer/witness.graphml [2020-11-30 01:28:52,136 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:28:52,137 INFO L168 Benchmark]: Toolchain (without parser) took 6345.98 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 70.7 MB in the beginning and 38.4 MB in the end (delta: 32.3 MB). Peak memory consumption was 54.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:28:52,138 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 83.9 MB. Free memory was 41.0 MB in the beginning and 41.0 MB in the end (delta: 18.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:28:52,139 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.94 ms. Allocated memory is still 100.7 MB. Free memory was 70.2 MB in the beginning and 78.2 MB in the end (delta: -8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:28:52,139 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.05 ms. Allocated memory is still 100.7 MB. Free memory was 78.2 MB in the beginning and 76.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:28:52,140 INFO L168 Benchmark]: Boogie Preprocessor took 21.86 ms. Allocated memory is still 100.7 MB. Free memory was 76.6 MB in the beginning and 75.6 MB in the end (delta: 956.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:28:52,141 INFO L168 Benchmark]: RCFGBuilder took 519.79 ms. Allocated memory is still 100.7 MB. Free memory was 75.6 MB in the beginning and 61.4 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:28:52,142 INFO L168 Benchmark]: TraceAbstraction took 5331.70 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 60.9 MB in the beginning and 41.5 MB in the end (delta: 19.4 MB). Peak memory consumption was 48.8 MB. Max. memory is 16.1 GB. [2020-11-30 01:28:52,144 INFO L168 Benchmark]: Witness Printer took 77.82 ms. Allocated memory is still 121.6 MB. Free memory was 41.5 MB in the beginning and 38.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:28:52,157 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 83.9 MB. Free memory was 41.0 MB in the beginning and 41.0 MB in the end (delta: 18.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 315.94 ms. Allocated memory is still 100.7 MB. Free memory was 70.2 MB in the beginning and 78.2 MB in the end (delta: -8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.05 ms. Allocated memory is still 100.7 MB. Free memory was 78.2 MB in the beginning and 76.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.86 ms. Allocated memory is still 100.7 MB. Free memory was 76.6 MB in the beginning and 75.6 MB in the end (delta: 956.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 519.79 ms. Allocated memory is still 100.7 MB. Free memory was 75.6 MB in the beginning and 61.4 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5331.70 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 60.9 MB in the beginning and 41.5 MB in the end (delta: 19.4 MB). Peak memory consumption was 48.8 MB. Max. memory is 16.1 GB. * Witness Printer took 77.82 ms. Allocated memory is still 121.6 MB. Free memory was 41.5 MB in the beginning and 38.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((!(0 == cond) && a == 1) && t == 3) && s == t + 1) || (((!(0 == cond) && s == 1) && a == 0) && t == 1) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((((a == 1 && 1 <= cond) && 0 <= n) && n <= 1) && t == 3) && s == t + 1) && cond == 1) || ((((((1 <= cond && 0 <= n) && s == 1) && a == 0) && n <= 1) && cond == 1) && t == 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((((a == 1 && 1 <= cond) && 0 <= n) && n <= 1) && t == 3) && s == t + 1) && cond == 1) || (((((0 <= n && s == 1) && a == 0) && n <= 1) && cond == 1) && t == 1) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((a == 1 && 1 <= cond) && 0 <= n) && n <= 1) && t == 3) && s == t + 1) && cond == 1) || ((((((1 <= cond && 0 <= n) && s == 1) && a == 0) && n <= 1) && cond == 1) && t == 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((!(0 == cond) && s == 1) && t == 1) || ((!(0 == cond) && t == 3) && s == t + 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((((a == 1 && 1 <= cond) && 0 <= n) && n <= 1) && t == 3) && s == t + 1) && cond == 1) || ((((((1 <= cond && 0 <= n) && s == 1) && a == 0) && n <= 1) && cond == 1) && t == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.4s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 190 SDtfs, 128 SDslu, 306 SDs, 0 SdLazy, 389 SolverSat, 52 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=8, 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, 9 MinimizatonAttempts, 50 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 22 NumberOfFragments, 243 HoareAnnotationTreeSize, 8 FomulaSimplifications, 337 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 119 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 11352 SizeOfPredicates, 29 NumberOfNonLiveVariables, 560 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 8/38 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...