./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound10.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_49a5eac3-3460-4597-ae42-f798eee7d665/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_49a5eac3-3460-4597-ae42-f798eee7d665/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_49a5eac3-3460-4597-ae42-f798eee7d665/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_49a5eac3-3460-4597-ae42-f798eee7d665/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound10.c -s /tmp/vcloud-vcloud-master/worker/run_dir_49a5eac3-3460-4597-ae42-f798eee7d665/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_49a5eac3-3460-4597-ae42-f798eee7d665/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 e2ed99b30ac1df5d31daa869d277589d2838cb93 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 21:10:23,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 21:10:23,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 21:10:23,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 21:10:23,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 21:10:23,433 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 21:10:23,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 21:10:23,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 21:10:23,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 21:10:23,451 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 21:10:23,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 21:10:23,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 21:10:23,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 21:10:23,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 21:10:23,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 21:10:23,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 21:10:23,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 21:10:23,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 21:10:23,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 21:10:23,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 21:10:23,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 21:10:23,487 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 21:10:23,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 21:10:23,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 21:10:23,500 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 21:10:23,500 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 21:10:23,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 21:10:23,503 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 21:10:23,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 21:10:23,506 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 21:10:23,506 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 21:10:23,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 21:10:23,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 21:10:23,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 21:10:23,512 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 21:10:23,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 21:10:23,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 21:10:23,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 21:10:23,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 21:10:23,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 21:10:23,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 21:10:23,520 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_49a5eac3-3460-4597-ae42-f798eee7d665/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 21:10:23,564 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 21:10:23,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 21:10:23,567 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 21:10:23,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 21:10:23,567 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 21:10:23,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 21:10:23,568 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 21:10:23,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 21:10:23,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 21:10:23,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 21:10:23,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 21:10:23,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 21:10:23,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 21:10:23,570 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 21:10:23,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 21:10:23,571 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 21:10:23,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 21:10:23,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 21:10:23,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 21:10:23,572 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 21:10:23,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 21:10:23,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 21:10:23,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 21:10:23,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 21:10:23,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 21:10:23,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 21:10:23,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 21:10:23,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 21:10:23,574 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 21:10:23,574 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_49a5eac3-3460-4597-ae42-f798eee7d665/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_49a5eac3-3460-4597-ae42-f798eee7d665/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2ed99b30ac1df5d31daa869d277589d2838cb93 [2020-11-29 21:10:23,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 21:10:23,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 21:10:23,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 21:10:23,934 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 21:10:23,938 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 21:10:23,940 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_49a5eac3-3460-4597-ae42-f798eee7d665/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound10.c [2020-11-29 21:10:24,035 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_49a5eac3-3460-4597-ae42-f798eee7d665/bin/uautomizer/data/3138994b3/178f56187be84a3685debe87abcf51d0/FLAGb3b252762 [2020-11-29 21:10:24,499 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 21:10:24,500 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_49a5eac3-3460-4597-ae42-f798eee7d665/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound10.c [2020-11-29 21:10:24,506 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_49a5eac3-3460-4597-ae42-f798eee7d665/bin/uautomizer/data/3138994b3/178f56187be84a3685debe87abcf51d0/FLAGb3b252762 [2020-11-29 21:10:24,866 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_49a5eac3-3460-4597-ae42-f798eee7d665/bin/uautomizer/data/3138994b3/178f56187be84a3685debe87abcf51d0 [2020-11-29 21:10:24,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 21:10:24,870 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 21:10:24,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 21:10:24,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 21:10:24,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 21:10:24,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:10:24" (1/1) ... [2020-11-29 21:10:24,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fea0f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:10:24, skipping insertion in model container [2020-11-29 21:10:24,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:10:24" (1/1) ... [2020-11-29 21:10:24,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 21:10:24,901 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 21:10:25,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:10:25,108 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 21:10:25,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 21:10:25,157 INFO L208 MainTranslator]: Completed translation [2020-11-29 21:10:25,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:10:25 WrapperNode [2020-11-29 21:10:25,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 21:10:25,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 21:10:25,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 21:10:25,160 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 21:10:25,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:10:25" (1/1) ... [2020-11-29 21:10:25,174 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:10:25" (1/1) ... [2020-11-29 21:10:25,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 21:10:25,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 21:10:25,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 21:10:25,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 21:10:25,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:10:25" (1/1) ... [2020-11-29 21:10:25,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:10:25" (1/1) ... [2020-11-29 21:10:25,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:10:25" (1/1) ... [2020-11-29 21:10:25,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:10:25" (1/1) ... [2020-11-29 21:10:25,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:10:25" (1/1) ... [2020-11-29 21:10:25,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:10:25" (1/1) ... [2020-11-29 21:10:25,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:10:25" (1/1) ... [2020-11-29 21:10:25,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 21:10:25,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 21:10:25,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 21:10:25,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 21:10:25,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:10:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_49a5eac3-3460-4597-ae42-f798eee7d665/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 [2020-11-29 21:10:25,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 21:10:25,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 21:10:25,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 21:10:25,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 21:10:25,631 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 21:10:25,631 INFO L298 CfgBuilder]: Removed 31 assume(true) statements. [2020-11-29 21:10:25,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:10:25 BoogieIcfgContainer [2020-11-29 21:10:25,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 21:10:25,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 21:10:25,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 21:10:25,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 21:10:25,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 09:10:24" (1/3) ... [2020-11-29 21:10:25,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5a70c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:10:25, skipping insertion in model container [2020-11-29 21:10:25,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:10:25" (2/3) ... [2020-11-29 21:10:25,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5a70c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:10:25, skipping insertion in model container [2020-11-29 21:10:25,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:10:25" (3/3) ... [2020-11-29 21:10:25,671 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_valuebound10.c [2020-11-29 21:10:25,683 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 21:10:25,687 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-29 21:10:25,700 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-29 21:10:25,734 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 21:10:25,735 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 21:10:25,735 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 21:10:25,735 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 21:10:25,735 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 21:10:25,735 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 21:10:25,736 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 21:10:25,736 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 21:10:25,751 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-29 21:10:25,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 21:10:25,755 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:10:25,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:10:25,756 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]=== [2020-11-29 21:10:25,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:10:25,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-11-29 21:10:25,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:10:25,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220047044] [2020-11-29 21:10:25,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:10:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:10:25,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:10:25,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220047044] [2020-11-29 21:10:25,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:10:25,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 21:10:25,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912004555] [2020-11-29 21:10:25,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 21:10:25,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:10:25,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 21:10:25,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 21:10:25,944 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-29 21:10:25,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:10:25,964 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2020-11-29 21:10:25,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 21:10:25,966 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-29 21:10:25,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:10:25,975 INFO L225 Difference]: With dead ends: 63 [2020-11-29 21:10:25,975 INFO L226 Difference]: Without dead ends: 29 [2020-11-29 21:10:25,979 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 [2020-11-29 21:10:25,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-29 21:10:26,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-29 21:10:26,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-29 21:10:26,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-11-29 21:10:26,016 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2020-11-29 21:10:26,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:10:26,017 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-11-29 21:10:26,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 21:10:26,017 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-11-29 21:10:26,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-29 21:10:26,018 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:10:26,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:10:26,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 21:10:26,019 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]=== [2020-11-29 21:10:26,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:10:26,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-11-29 21:10:26,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:10:26,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58288978] [2020-11-29 21:10:26,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:10:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:10:26,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:10:26,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58288978] [2020-11-29 21:10:26,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:10:26,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 21:10:26,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405993352] [2020-11-29 21:10:26,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:10:26,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:10:26,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:10:26,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:10:26,166 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 4 states. [2020-11-29 21:10:26,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:10:26,315 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-11-29 21:10:26,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:10:26,316 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-29 21:10:26,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:10:26,317 INFO L225 Difference]: With dead ends: 54 [2020-11-29 21:10:26,317 INFO L226 Difference]: Without dead ends: 50 [2020-11-29 21:10:26,318 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 [2020-11-29 21:10:26,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-29 21:10:26,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2020-11-29 21:10:26,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-29 21:10:26,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2020-11-29 21:10:26,337 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 7 [2020-11-29 21:10:26,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:10:26,337 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2020-11-29 21:10:26,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:10:26,338 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-11-29 21:10:26,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 21:10:26,339 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:10:26,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:10:26,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 21:10:26,376 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]=== [2020-11-29 21:10:26,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:10:26,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1186818322, now seen corresponding path program 1 times [2020-11-29 21:10:26,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:10:26,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951486848] [2020-11-29 21:10:26,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:10:26,418 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:10:26,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [947966619] [2020-11-29 21:10:26,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_49a5eac3-3460-4597-ae42-f798eee7d665/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 [2020-11-29 21:10:26,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:10:26,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 21:10:26,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:10:26,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:10:26,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951486848] [2020-11-29 21:10:26,575 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:10:26,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947966619] [2020-11-29 21:10:26,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:10:26,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 21:10:26,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513847235] [2020-11-29 21:10:26,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:10:26,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:10:26,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:10:26,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:10:26,578 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 4 states. [2020-11-29 21:10:26,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:10:26,713 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2020-11-29 21:10:26,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 21:10:26,714 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-29 21:10:26,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:10:26,715 INFO L225 Difference]: With dead ends: 50 [2020-11-29 21:10:26,715 INFO L226 Difference]: Without dead ends: 46 [2020-11-29 21:10:26,716 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 [2020-11-29 21:10:26,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-29 21:10:26,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-11-29 21:10:26,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-29 21:10:26,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2020-11-29 21:10:26,731 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 9 [2020-11-29 21:10:26,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:10:26,731 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2020-11-29 21:10:26,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:10:26,732 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2020-11-29 21:10:26,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 21:10:26,732 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:10:26,734 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:10:26,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-29 21:10:26,935 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]=== [2020-11-29 21:10:26,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:10:26,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1928706379, now seen corresponding path program 1 times [2020-11-29 21:10:26,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:10:26,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058862229] [2020-11-29 21:10:26,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:10:26,957 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:10:26,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [705074457] [2020-11-29 21:10:26,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_49a5eac3-3460-4597-ae42-f798eee7d665/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 [2020-11-29 21:10:27,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:10:27,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 21:10:27,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:10:27,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:10:27,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058862229] [2020-11-29 21:10:27,053 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:10:27,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705074457] [2020-11-29 21:10:27,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:10:27,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 21:10:27,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119220686] [2020-11-29 21:10:27,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 21:10:27,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:10:27,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 21:10:27,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 21:10:27,056 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 4 states. [2020-11-29 21:10:27,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:10:27,160 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2020-11-29 21:10:27,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 21:10:27,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-29 21:10:27,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:10:27,162 INFO L225 Difference]: With dead ends: 47 [2020-11-29 21:10:27,162 INFO L226 Difference]: Without dead ends: 37 [2020-11-29 21:10:27,163 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 [2020-11-29 21:10:27,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-29 21:10:27,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-11-29 21:10:27,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-29 21:10:27,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-11-29 21:10:27,168 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 11 [2020-11-29 21:10:27,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:10:27,169 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-11-29 21:10:27,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 21:10:27,169 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-11-29 21:10:27,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 21:10:27,169 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:10:27,170 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:10:27,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:10:27,372 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]=== [2020-11-29 21:10:27,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:10:27,372 INFO L82 PathProgramCache]: Analyzing trace with hash -13364102, now seen corresponding path program 1 times [2020-11-29 21:10:27,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:10:27,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469254226] [2020-11-29 21:10:27,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:10:27,384 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:10:27,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [238594197] [2020-11-29 21:10:27,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_49a5eac3-3460-4597-ae42-f798eee7d665/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 [2020-11-29 21:10:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:10:27,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 21:10:27,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:10:27,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:10:27,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469254226] [2020-11-29 21:10:27,501 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:10:27,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238594197] [2020-11-29 21:10:27,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:10:27,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 21:10:27,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12358388] [2020-11-29 21:10:27,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:10:27,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:10:27,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:10:27,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:10:27,524 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 5 states. [2020-11-29 21:10:27,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:10:27,663 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2020-11-29 21:10:27,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:10:27,664 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-29 21:10:27,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:10:27,665 INFO L225 Difference]: With dead ends: 61 [2020-11-29 21:10:27,665 INFO L226 Difference]: Without dead ends: 57 [2020-11-29 21:10:27,666 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 [2020-11-29 21:10:27,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-29 21:10:27,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2020-11-29 21:10:27,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-29 21:10:27,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-11-29 21:10:27,678 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 14 [2020-11-29 21:10:27,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:10:27,679 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-11-29 21:10:27,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:10:27,679 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-11-29 21:10:27,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 21:10:27,680 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:10:27,680 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:10:27,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:10:27,886 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]=== [2020-11-29 21:10:27,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:10:27,887 INFO L82 PathProgramCache]: Analyzing trace with hash 42186397, now seen corresponding path program 1 times [2020-11-29 21:10:27,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:10:27,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769304525] [2020-11-29 21:10:27,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:10:27,901 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:10:27,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2038618125] [2020-11-29 21:10:27,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_49a5eac3-3460-4597-ae42-f798eee7d665/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 [2020-11-29 21:10:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:10:27,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 21:10:27,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:10:28,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:10:28,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769304525] [2020-11-29 21:10:28,004 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:10:28,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038618125] [2020-11-29 21:10:28,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:10:28,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 21:10:28,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011776040] [2020-11-29 21:10:28,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:10:28,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:10:28,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:10:28,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:10:28,006 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 5 states. [2020-11-29 21:10:28,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:10:28,129 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2020-11-29 21:10:28,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 21:10:28,129 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-29 21:10:28,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:10:28,130 INFO L225 Difference]: With dead ends: 57 [2020-11-29 21:10:28,130 INFO L226 Difference]: Without dead ends: 53 [2020-11-29 21:10:28,131 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 [2020-11-29 21:10:28,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-29 21:10:28,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2020-11-29 21:10:28,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-29 21:10:28,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-11-29 21:10:28,141 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 16 [2020-11-29 21:10:28,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:10:28,141 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-11-29 21:10:28,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:10:28,141 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-11-29 21:10:28,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 21:10:28,142 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:10:28,143 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 21:10:28,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:10:28,356 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]=== [2020-11-29 21:10:28,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:10:28,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1886608768, now seen corresponding path program 1 times [2020-11-29 21:10:28,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:10:28,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978337572] [2020-11-29 21:10:28,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:10:28,382 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:10:28,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [7482261] [2020-11-29 21:10:28,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_49a5eac3-3460-4597-ae42-f798eee7d665/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 [2020-11-29 21:10:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 21:10:28,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 21:10:28,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:10:28,485 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:10:28,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978337572] [2020-11-29 21:10:28,485 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:10:28,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7482261] [2020-11-29 21:10:28,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:10:28,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 21:10:28,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754171441] [2020-11-29 21:10:28,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:10:28,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:10:28,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:10:28,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:10:28,487 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 5 states. [2020-11-29 21:10:28,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:10:28,594 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-11-29 21:10:28,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 21:10:28,597 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-29 21:10:28,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:10:28,598 INFO L225 Difference]: With dead ends: 54 [2020-11-29 21:10:28,598 INFO L226 Difference]: Without dead ends: 44 [2020-11-29 21:10:28,599 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 [2020-11-29 21:10:28,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-29 21:10:28,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-11-29 21:10:28,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-29 21:10:28,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2020-11-29 21:10:28,605 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 18 [2020-11-29 21:10:28,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:10:28,606 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2020-11-29 21:10:28,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:10:28,606 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2020-11-29 21:10:28,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-29 21:10:28,607 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:10:28,607 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 21:10:28,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-29 21:10:28,808 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]=== [2020-11-29 21:10:28,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:10:28,808 INFO L82 PathProgramCache]: Analyzing trace with hash 25658831, now seen corresponding path program 2 times [2020-11-29 21:10:28,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:10:28,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980558686] [2020-11-29 21:10:28,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:10:28,825 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:10:28,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1291915748] [2020-11-29 21:10:28,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_49a5eac3-3460-4597-ae42-f798eee7d665/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 [2020-11-29 21:10:28,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 21:10:28,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:10:28,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 21:10:28,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:10:28,975 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:10:28,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980558686] [2020-11-29 21:10:28,975 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:10:28,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291915748] [2020-11-29 21:10:28,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:10:28,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 21:10:28,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466868066] [2020-11-29 21:10:28,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:10:28,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:10:28,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:10:28,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:10:28,977 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 6 states. [2020-11-29 21:10:29,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:10:29,168 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2020-11-29 21:10:29,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 21:10:29,169 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-11-29 21:10:29,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:10:29,170 INFO L225 Difference]: With dead ends: 68 [2020-11-29 21:10:29,170 INFO L226 Difference]: Without dead ends: 64 [2020-11-29 21:10:29,170 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 [2020-11-29 21:10:29,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-11-29 21:10:29,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2020-11-29 21:10:29,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-29 21:10:29,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-11-29 21:10:29,176 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 21 [2020-11-29 21:10:29,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:10:29,177 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-11-29 21:10:29,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:10:29,177 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-11-29 21:10:29,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 21:10:29,178 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:10:29,178 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 21:10:29,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:10:29,379 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]=== [2020-11-29 21:10:29,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:10:29,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1111480654, now seen corresponding path program 2 times [2020-11-29 21:10:29,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:10:29,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935742965] [2020-11-29 21:10:29,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:10:29,390 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:10:29,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1058898431] [2020-11-29 21:10:29,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_49a5eac3-3460-4597-ae42-f798eee7d665/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 [2020-11-29 21:10:29,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 21:10:29,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:10:29,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-29 21:10:29,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:10:29,541 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 21:10:29,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935742965] [2020-11-29 21:10:29,541 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:10:29,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058898431] [2020-11-29 21:10:29,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:10:29,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 21:10:29,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167717209] [2020-11-29 21:10:29,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 21:10:29,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:10:29,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 21:10:29,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:10:29,543 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 6 states. [2020-11-29 21:10:29,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:10:29,719 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2020-11-29 21:10:29,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 21:10:29,720 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-11-29 21:10:29,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:10:29,720 INFO L225 Difference]: With dead ends: 64 [2020-11-29 21:10:29,720 INFO L226 Difference]: Without dead ends: 60 [2020-11-29 21:10:29,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-29 21:10:29,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-29 21:10:29,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-11-29 21:10:29,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-29 21:10:29,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-11-29 21:10:29,737 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 23 [2020-11-29 21:10:29,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:10:29,737 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-11-29 21:10:29,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 21:10:29,738 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-11-29 21:10:29,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 21:10:29,739 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:10:29,739 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 21:10:29,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:10:29,956 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:10:29,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:10:29,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1314135125, now seen corresponding path program 2 times [2020-11-29 21:10:29,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:10:29,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073787623] [2020-11-29 21:10:29,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:10:29,966 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:10:29,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1754015764] [2020-11-29 21:10:29,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_49a5eac3-3460-4597-ae42-f798eee7d665/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 [2020-11-29 21:10:30,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-29 21:10:30,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:10:30,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 21:10:30,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:10:30,078 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:10:30,079 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:10:30,129 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:10:30,130 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:10:32,217 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:10:38,433 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-29 21:10:38,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073787623] [2020-11-29 21:10:38,434 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:10:38,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754015764] [2020-11-29 21:10:38,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:10:38,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 21:10:38,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193645156] [2020-11-29 21:10:38,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 21:10:38,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:10:38,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 21:10:38,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:10:38,436 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 7 states. [2020-11-29 21:10:38,654 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 16 [2020-11-29 21:10:47,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:10:47,351 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2020-11-29 21:10:47,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 21:10:47,352 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-11-29 21:10:47,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:10:47,353 INFO L225 Difference]: With dead ends: 54 [2020-11-29 21:10:47,353 INFO L226 Difference]: Without dead ends: 52 [2020-11-29 21:10:47,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-11-29 21:10:47,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-29 21:10:47,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-11-29 21:10:47,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-29 21:10:47,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2020-11-29 21:10:47,363 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 25 [2020-11-29 21:10:47,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:10:47,363 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2020-11-29 21:10:47,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 21:10:47,363 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2020-11-29 21:10:47,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 21:10:47,364 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:10:47,365 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-11-29 21:10:47,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-29 21:10:47,580 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:10:47,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:10:47,581 INFO L82 PathProgramCache]: Analyzing trace with hash 778492634, now seen corresponding path program 3 times [2020-11-29 21:10:47,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:10:47,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873083980] [2020-11-29 21:10:47,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:10:47,607 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:10:47,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [692352975] [2020-11-29 21:10:47,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_49a5eac3-3460-4597-ae42-f798eee7d665/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 [2020-11-29 21:10:47,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-29 21:10:47,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:10:47,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 21:10:47,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:10:47,723 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:10:47,724 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:10:47,790 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-29 21:10:47,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873083980] [2020-11-29 21:10:47,791 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:10:47,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692352975] [2020-11-29 21:10:47,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 21:10:47,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 21:10:47,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059543859] [2020-11-29 21:10:47,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 21:10:47,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:10:47,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 21:10:47,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 21:10:47,792 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand 5 states. [2020-11-29 21:10:47,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:10:47,975 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2020-11-29 21:10:47,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 21:10:47,976 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-11-29 21:10:47,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:10:47,977 INFO L225 Difference]: With dead ends: 52 [2020-11-29 21:10:47,977 INFO L226 Difference]: Without dead ends: 48 [2020-11-29 21:10:47,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 21:10:47,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-29 21:10:47,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-11-29 21:10:47,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-29 21:10:47,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-11-29 21:10:47,988 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 28 [2020-11-29 21:10:47,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:10:47,988 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-11-29 21:10:47,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 21:10:47,988 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-11-29 21:10:47,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-29 21:10:47,990 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 21:10:47,990 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-11-29 21:10:48,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:10:48,200 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 21:10:48,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 21:10:48,201 INFO L82 PathProgramCache]: Analyzing trace with hash 807298301, now seen corresponding path program 3 times [2020-11-29 21:10:48,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 21:10:48,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568806920] [2020-11-29 21:10:48,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 21:10:48,210 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 21:10:48,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [765648973] [2020-11-29 21:10:48,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_49a5eac3-3460-4597-ae42-f798eee7d665/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:10:48,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 21:10:48,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 21:10:48,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-29 21:10:48,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 21:10:48,324 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:10:48,324 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:10:48,374 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:10:48,841 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-11-29 21:10:48,845 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 21:10:48,847 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 21:10:49,034 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-29 21:10:49,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568806920] [2020-11-29 21:10:49,035 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 21:10:49,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765648973] [2020-11-29 21:10:49,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 21:10:49,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 21:10:49,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589829188] [2020-11-29 21:10:49,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 21:10:49,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 21:10:49,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 21:10:49,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 21:10:49,036 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 7 states. [2020-11-29 21:11:00,136 WARN L193 SmtUtils]: Spent 10.86 s on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2020-11-29 21:11:03,200 WARN L193 SmtUtils]: Spent 3.02 s on a formula simplification. DAG size of input: 36 DAG size of output: 21 [2020-11-29 21:11:11,364 WARN L193 SmtUtils]: Spent 2.57 s on a formula simplification that was a NOOP. DAG size: 31 [2020-11-29 21:11:12,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 21:11:12,367 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2020-11-29 21:11:12,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 21:11:12,372 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-11-29 21:11:12,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 21:11:12,373 INFO L225 Difference]: With dead ends: 48 [2020-11-29 21:11:12,373 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 21:11:12,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-11-29 21:11:12,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 21:11:12,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 21:11:12,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 21:11:12,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 21:11:12,374 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2020-11-29 21:11:12,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 21:11:12,375 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 21:11:12,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 21:11:12,375 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 21:11:12,375 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 21:11:12,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 21:11:12,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 21:11:21,948 WARN L193 SmtUtils]: Spent 9.22 s on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-11-29 21:11:34,605 WARN L193 SmtUtils]: Spent 12.65 s on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2020-11-29 21:11:35,037 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 23 [2020-11-29 21:11:45,704 WARN L193 SmtUtils]: Spent 10.67 s on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2020-11-29 21:11:54,947 WARN L193 SmtUtils]: Spent 9.24 s on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2020-11-29 21:12:07,989 WARN L193 SmtUtils]: Spent 13.04 s on a formula simplification. DAG size of input: 36 DAG size of output: 30 [2020-11-29 21:12:07,992 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 21:12:07,992 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 21:12:07,992 INFO L277 CegarLoopResult]: At program point L48(lines 20 49) the Hoare annotation is: true [2020-11-29 21:12:07,992 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 21:12:07,992 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 21:12:07,992 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 21:12:07,993 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 21:12:07,993 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 21:12:07,993 INFO L274 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-11-29 21:12:07,993 INFO L270 CegarLoopResult]: At program point L12-1(lines 11 17) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~s~0 4))) (and (= (+ (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 4) (* ULTIMATE.start_main_~a~0 8) 4) .cse0) (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) .cse0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~a~0 2) 1) ULTIMATE.start_main_~t~0))) [2020-11-29 21:12:07,993 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2020-11-29 21:12:07,993 INFO L270 CegarLoopResult]: At program point L12-3(lines 11 17) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~s~0 4))) (and (= (+ (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 4) (* ULTIMATE.start_main_~a~0 8) 4) .cse0) (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) .cse0) (= ULTIMATE.start_main_~s~0 (let ((.cse1 (div (+ ULTIMATE.start_main_~t~0 (- 1)) 2))) (+ (* .cse1 2) (* .cse1 .cse1) 1))) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~a~0 2) 1) ULTIMATE.start_main_~t~0))) [2020-11-29 21:12:07,993 INFO L274 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-11-29 21:12:07,994 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 15) no Hoare annotation was computed. [2020-11-29 21:12:07,994 INFO L270 CegarLoopResult]: At program point L12-5(lines 36 37) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~s~0 4))) (and (= (+ (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 4) (* ULTIMATE.start_main_~a~0 8) 4) .cse0) (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) .cse0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~a~0 2) 1) ULTIMATE.start_main_~t~0))) [2020-11-29 21:12:07,994 INFO L274 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-11-29 21:12:07,994 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))) (let ((.cse1 (* ULTIMATE.start_main_~s~0 4))) (and (= (+ (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 4) (* ULTIMATE.start_main_~a~0 8) 4) .cse1) (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) .cse1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~a~0 2) 1) ULTIMATE.start_main_~t~0))) (and .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)))) [2020-11-29 21:12:07,994 INFO L274 CegarLoopResult]: For program point L12-8(lines 12 15) no Hoare annotation was computed. [2020-11-29 21:12:07,995 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))) (let ((.cse1 (* ULTIMATE.start_main_~s~0 4))) (and (= (+ (* (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) 4) (* ULTIMATE.start_main_~a~0 8) 4) .cse1) (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) .cse1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~a~0 2) 1) ULTIMATE.start_main_~t~0))))) [2020-11-29 21:12:07,995 INFO L274 CegarLoopResult]: For program point L12-10(lines 12 15) no Hoare annotation was computed. [2020-11-29 21:12:07,995 INFO L277 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: true [2020-11-29 21:12:07,995 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 21:12:07,995 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 21:12:07,995 INFO L274 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-11-29 21:12:07,995 INFO L274 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-11-29 21:12:07,995 INFO L274 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-11-29 21:12:07,995 INFO L274 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-11-29 21:12:07,995 INFO L274 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-11-29 21:12:07,996 INFO L274 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-11-29 21:12:07,996 INFO L274 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-11-29 21:12:07,996 INFO L270 CegarLoopResult]: At program point L30-2(lines 30 42) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)) (and (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* ULTIMATE.start_main_~s~0 4)) (= (+ (* ULTIMATE.start_main_~a~0 2) 1) ULTIMATE.start_main_~t~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond))) [2020-11-29 21:12:07,996 INFO L274 CegarLoopResult]: For program point L30-3(lines 30 42) no Hoare annotation was computed. [2020-11-29 21:12:07,996 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 21:12:08,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 09:12:08 BoogieIcfgContainer [2020-11-29 21:12:08,023 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 21:12:08,024 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 21:12:08,024 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 21:12:08,024 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 21:12:08,025 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:10:25" (3/4) ... [2020-11-29 21:12:08,029 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 21:12:08,042 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-29 21:12:08,042 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 21:12:08,042 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 21:12:08,043 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 21:12:08,094 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_49a5eac3-3460-4597-ae42-f798eee7d665/bin/uautomizer/witness.graphml [2020-11-29 21:12:08,094 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 21:12:08,095 INFO L168 Benchmark]: Toolchain (without parser) took 103224.84 ms. Allocated memory was 111.1 MB in the beginning and 138.4 MB in the end (delta: 27.3 MB). Free memory was 81.4 MB in the beginning and 69.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 40.2 MB. Max. memory is 16.1 GB. [2020-11-29 21:12:08,096 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 83.9 MB. Free memory was 41.3 MB in the beginning and 41.2 MB in the end (delta: 67.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:12:08,097 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.30 ms. Allocated memory is still 111.1 MB. Free memory was 81.4 MB in the beginning and 88.3 MB in the end (delta: -6.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 21:12:08,097 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.11 ms. Allocated memory is still 111.1 MB. Free memory was 88.3 MB in the beginning and 86.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 21:12:08,098 INFO L168 Benchmark]: Boogie Preprocessor took 27.39 ms. Allocated memory is still 111.1 MB. Free memory was 86.8 MB in the beginning and 85.9 MB in the end (delta: 882.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 21:12:08,099 INFO L168 Benchmark]: RCFGBuilder took 409.99 ms. Allocated memory is still 111.1 MB. Free memory was 85.9 MB in the beginning and 71.5 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 21:12:08,099 INFO L168 Benchmark]: TraceAbstraction took 102371.21 ms. Allocated memory was 111.1 MB in the beginning and 138.4 MB in the end (delta: 27.3 MB). Free memory was 71.2 MB in the beginning and 72.3 MB in the end (delta: -1.1 MB). Peak memory consumption was 28.3 MB. Max. memory is 16.1 GB. [2020-11-29 21:12:08,100 INFO L168 Benchmark]: Witness Printer took 70.24 ms. Allocated memory is still 138.4 MB. Free memory was 72.3 MB in the beginning and 69.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 21:12:08,103 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 83.9 MB. Free memory was 41.3 MB in the beginning and 41.2 MB in the end (delta: 67.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 287.30 ms. Allocated memory is still 111.1 MB. Free memory was 81.4 MB in the beginning and 88.3 MB in the end (delta: -6.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.11 ms. Allocated memory is still 111.1 MB. Free memory was 88.3 MB in the beginning and 86.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.39 ms. Allocated memory is still 111.1 MB. Free memory was 86.8 MB in the beginning and 85.9 MB in the end (delta: 882.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 409.99 ms. Allocated memory is still 111.1 MB. Free memory was 85.9 MB in the beginning and 71.5 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 102371.21 ms. Allocated memory was 111.1 MB in the beginning and 138.4 MB in the end (delta: 27.3 MB). Free memory was 71.2 MB in the beginning and 72.3 MB in the end (delta: -1.1 MB). Peak memory consumption was 28.3 MB. Max. memory is 16.1 GB. * Witness Printer took 70.24 ms. Allocated memory is still 138.4 MB. Free memory was 72.3 MB in the beginning and 69.2 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) || (((a * a * 4 + a * 8 + 4 == s * 4 && t * 2 + t * t + 1 == s * 4) && 1 == cond) && a * 2 + 1 == t)) || (((!(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 * a * 4 + a * 8 + 4 == s * 4 && t * 2 + t * t + 1 == s * 4) && 1 == cond) && a * 2 + 1 == t - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((s == 1 && a == 0) && t == 1) || ((t * 2 + t * t + 1 == s * 4 && a * 2 + 1 == t) && 1 <= cond) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((a * a * 4 + a * 8 + 4 == s * 4 && t * 2 + t * t + 1 == s * 4) && 1 == cond) && a * 2 + 1 == t - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((!(0 == cond) && s == 1) && t == 1) || ((!(0 == cond) && t == 3) && s == t + 1)) || (((a * a * 4 + a * 8 + 4 == s * 4 && t * 2 + t * t + 1 == s * 4) && 1 == cond) && a * 2 + 1 == t) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((a * a * 4 + a * 8 + 4 == s * 4 && t * 2 + t * t + 1 == s * 4) && s == (t + -1) / 2 * 2 + (t + -1) / 2 * ((t + -1) / 2) + 1) && 1 == cond) && a * 2 + 1 == t - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 46.8s, OverallIterations: 12, TraceHistogramMax: 4, AutomataDifference: 33.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 55.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 201 SDslu, 426 SDs, 0 SdLazy, 604 SolverSat, 109 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 14.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 220 GetRequests, 158 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 19.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred 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: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 56 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 33 NumberOfFragments, 299 HoareAnnotationTreeSize, 8 FomulaSimplifications, 2245 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 92 FormulaSimplificationTreeSizeReductionInter, 55.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 9.7s InterpolantComputationTime, 209 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 197 ConstructedInterpolants, 1 QuantifiedInterpolants, 21047 SizeOfPredicates, 54 NumberOfNonLiveVariables, 800 ConjunctsInSsa, 131 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 78/117 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...