./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound2.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_ffea420c-3613-4d77-869f-e0446ff3de3d/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ffea420c-3613-4d77-869f-e0446ff3de3d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ffea420c-3613-4d77-869f-e0446ff3de3d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ffea420c-3613-4d77-869f-e0446ff3de3d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ffea420c-3613-4d77-869f-e0446ff3de3d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ffea420c-3613-4d77-869f-e0446ff3de3d/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 bd22fe84d520ec30ecb06ab78e8b0a57d2fc3fd5 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 02:57:35,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 02:57:35,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 02:57:35,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 02:57:35,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 02:57:35,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 02:57:35,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 02:57:35,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 02:57:35,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 02:57:35,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 02:57:35,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 02:57:35,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 02:57:35,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 02:57:35,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 02:57:35,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 02:57:35,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 02:57:35,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 02:57:35,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 02:57:35,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 02:57:35,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 02:57:35,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 02:57:35,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 02:57:35,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 02:57:35,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 02:57:35,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 02:57:35,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 02:57:35,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 02:57:35,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 02:57:35,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 02:57:35,449 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 02:57:35,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 02:57:35,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 02:57:35,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 02:57:35,453 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 02:57:35,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 02:57:35,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 02:57:35,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 02:57:35,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 02:57:35,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 02:57:35,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 02:57:35,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 02:57:35,463 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ffea420c-3613-4d77-869f-e0446ff3de3d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 02:57:35,483 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 02:57:35,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 02:57:35,485 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 02:57:35,485 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 02:57:35,485 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 02:57:35,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 02:57:35,486 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 02:57:35,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 02:57:35,486 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 02:57:35,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 02:57:35,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 02:57:35,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 02:57:35,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 02:57:35,487 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 02:57:35,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 02:57:35,488 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 02:57:35,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 02:57:35,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 02:57:35,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 02:57:35,488 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 02:57:35,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 02:57:35,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:57:35,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 02:57:35,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 02:57:35,489 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 02:57:35,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 02:57:35,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 02:57:35,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 02:57:35,490 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 02:57:35,490 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_ffea420c-3613-4d77-869f-e0446ff3de3d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ffea420c-3613-4d77-869f-e0446ff3de3d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd22fe84d520ec30ecb06ab78e8b0a57d2fc3fd5 [2020-11-28 02:57:35,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 02:57:35,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 02:57:35,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 02:57:35,778 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 02:57:35,780 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 02:57:35,781 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ffea420c-3613-4d77-869f-e0446ff3de3d/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound2.c [2020-11-28 02:57:35,849 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ffea420c-3613-4d77-869f-e0446ff3de3d/bin/uautomizer/data/fad1f9081/2cb7864c54404522ba30dcf34b77d305/FLAG3ab332a43 [2020-11-28 02:57:36,249 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 02:57:36,250 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ffea420c-3613-4d77-869f-e0446ff3de3d/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound2.c [2020-11-28 02:57:36,256 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ffea420c-3613-4d77-869f-e0446ff3de3d/bin/uautomizer/data/fad1f9081/2cb7864c54404522ba30dcf34b77d305/FLAG3ab332a43 [2020-11-28 02:57:36,645 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ffea420c-3613-4d77-869f-e0446ff3de3d/bin/uautomizer/data/fad1f9081/2cb7864c54404522ba30dcf34b77d305 [2020-11-28 02:57:36,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 02:57:36,650 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 02:57:36,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:36,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 02:57:36,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 02:57:36,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:36" (1/1) ... [2020-11-28 02:57:36,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7710a7c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:36, skipping insertion in model container [2020-11-28 02:57:36,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:57:36" (1/1) ... [2020-11-28 02:57:36,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 02:57:36,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 02:57:36,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:36,863 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 02:57:36,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 02:57:36,922 INFO L208 MainTranslator]: Completed translation [2020-11-28 02:57:36,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:36 WrapperNode [2020-11-28 02:57:36,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 02:57:36,924 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:36,924 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 02:57:36,924 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 02:57:36,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:36" (1/1) ... [2020-11-28 02:57:36,948 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:36" (1/1) ... [2020-11-28 02:57:36,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 02:57:36,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 02:57:36,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 02:57:36,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 02:57:36,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:36" (1/1) ... [2020-11-28 02:57:36,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:36" (1/1) ... [2020-11-28 02:57:37,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:36" (1/1) ... [2020-11-28 02:57:37,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:36" (1/1) ... [2020-11-28 02:57:37,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:36" (1/1) ... [2020-11-28 02:57:37,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:36" (1/1) ... [2020-11-28 02:57:37,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:36" (1/1) ... [2020-11-28 02:57:37,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 02:57:37,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 02:57:37,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 02:57:37,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 02:57:37,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ffea420c-3613-4d77-869f-e0446ff3de3d/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 02:57:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 02:57:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 02:57:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 02:57:37,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 02:57:37,454 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 02:57:37,454 INFO L298 CfgBuilder]: Removed 31 assume(true) statements. [2020-11-28 02:57:37,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:37 BoogieIcfgContainer [2020-11-28 02:57:37,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 02:57:37,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 02:57:37,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 02:57:37,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 02:57:37,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:57:36" (1/3) ... [2020-11-28 02:57:37,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a479c3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:37, skipping insertion in model container [2020-11-28 02:57:37,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:57:36" (2/3) ... [2020-11-28 02:57:37,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a479c3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:37, skipping insertion in model container [2020-11-28 02:57:37,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:37" (3/3) ... [2020-11-28 02:57:37,474 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_valuebound2.c [2020-11-28 02:57:37,493 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 02:57:37,497 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-28 02:57:37,511 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-28 02:57:37,534 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 02:57:37,535 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 02:57:37,535 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 02:57:37,535 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 02:57:37,535 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 02:57:37,535 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 02:57:37,536 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 02:57:37,536 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 02:57:37,550 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-28 02:57:37,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 02:57:37,555 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:37,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:37,556 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]=== [2020-11-28 02:57:37,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:37,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-11-28 02:57:37,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:37,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062430283] [2020-11-28 02:57:37,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:37,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:37,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062430283] [2020-11-28 02:57:37,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:37,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 02:57:37,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682071508] [2020-11-28 02:57:37,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 02:57:37,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:37,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 02:57:37,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:57:37,720 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-28 02:57:37,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:37,737 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2020-11-28 02:57:37,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 02:57:37,738 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-28 02:57:37,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:37,746 INFO L225 Difference]: With dead ends: 63 [2020-11-28 02:57:37,746 INFO L226 Difference]: Without dead ends: 29 [2020-11-28 02:57:37,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 02:57:37,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-28 02:57:37,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-28 02:57:37,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-28 02:57:37,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-11-28 02:57:37,807 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2020-11-28 02:57:37,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:37,808 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-11-28 02:57:37,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 02:57:37,808 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-11-28 02:57:37,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 02:57:37,808 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:37,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:37,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 02:57:37,809 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]=== [2020-11-28 02:57:37,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:37,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-11-28 02:57:37,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:37,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275054996] [2020-11-28 02:57:37,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:37,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:37,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275054996] [2020-11-28 02:57:37,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:37,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:57:37,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494579861] [2020-11-28 02:57:37,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:57:37,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:37,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:57:37,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:57:37,987 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 4 states. [2020-11-28 02:57:38,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:38,141 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-11-28 02:57:38,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:57:38,143 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 02:57:38,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:38,144 INFO L225 Difference]: With dead ends: 54 [2020-11-28 02:57:38,144 INFO L226 Difference]: Without dead ends: 50 [2020-11-28 02:57:38,145 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 [2020-11-28 02:57:38,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-28 02:57:38,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2020-11-28 02:57:38,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-28 02:57:38,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2020-11-28 02:57:38,154 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 7 [2020-11-28 02:57:38,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:38,154 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2020-11-28 02:57:38,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:57:38,155 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-11-28 02:57:38,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 02:57:38,155 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:38,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:38,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 02:57:38,156 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]=== [2020-11-28 02:57:38,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:38,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1186818322, now seen corresponding path program 1 times [2020-11-28 02:57:38,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:38,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021579102] [2020-11-28 02:57:38,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:38,195 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:38,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [266799037] [2020-11-28 02:57:38,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ffea420c-3613-4d77-869f-e0446ff3de3d/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:38,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 02:57:38,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:38,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:38,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021579102] [2020-11-28 02:57:38,308 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:38,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266799037] [2020-11-28 02:57:38,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:38,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:57:38,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117367076] [2020-11-28 02:57:38,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:57:38,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:38,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:57:38,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:57:38,312 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 4 states. [2020-11-28 02:57:38,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:38,421 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2020-11-28 02:57:38,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 02:57:38,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-28 02:57:38,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:38,423 INFO L225 Difference]: With dead ends: 50 [2020-11-28 02:57:38,423 INFO L226 Difference]: Without dead ends: 46 [2020-11-28 02:57:38,423 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 [2020-11-28 02:57:38,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-28 02:57:38,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-11-28 02:57:38,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-28 02:57:38,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2020-11-28 02:57:38,432 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 9 [2020-11-28 02:57:38,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:38,432 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2020-11-28 02:57:38,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:57:38,432 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2020-11-28 02:57:38,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 02:57:38,433 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:38,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:38,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-28 02:57:38,634 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]=== [2020-11-28 02:57:38,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:38,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1928706379, now seen corresponding path program 1 times [2020-11-28 02:57:38,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:38,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550924577] [2020-11-28 02:57:38,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:38,649 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:38,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [23294729] [2020-11-28 02:57:38,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ffea420c-3613-4d77-869f-e0446ff3de3d/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:38,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:38,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 02:57:38,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:38,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:38,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550924577] [2020-11-28 02:57:38,742 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:38,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23294729] [2020-11-28 02:57:38,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 02:57:38,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 02:57:38,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120946026] [2020-11-28 02:57:38,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 02:57:38,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:38,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 02:57:38,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 02:57:38,745 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 4 states. [2020-11-28 02:57:38,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:38,849 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2020-11-28 02:57:38,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 02:57:38,849 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 02:57:38,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:38,850 INFO L225 Difference]: With dead ends: 47 [2020-11-28 02:57:38,850 INFO L226 Difference]: Without dead ends: 37 [2020-11-28 02:57:38,851 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 [2020-11-28 02:57:38,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-28 02:57:38,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-11-28 02:57:38,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-28 02:57:38,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-11-28 02:57:38,858 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 11 [2020-11-28 02:57:38,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:38,858 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-11-28 02:57:38,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 02:57:38,859 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-11-28 02:57:38,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 02:57:38,859 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:38,859 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:39,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:39,060 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]=== [2020-11-28 02:57:39,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:39,061 INFO L82 PathProgramCache]: Analyzing trace with hash -13364102, now seen corresponding path program 1 times [2020-11-28 02:57:39,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:39,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751383734] [2020-11-28 02:57:39,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:39,081 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:39,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1501255334] [2020-11-28 02:57:39,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ffea420c-3613-4d77-869f-e0446ff3de3d/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:39,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 02:57:39,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:39,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:39,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751383734] [2020-11-28 02:57:39,188 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:39,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501255334] [2020-11-28 02:57:39,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:57:39,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-28 02:57:39,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282266260] [2020-11-28 02:57:39,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:57:39,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:39,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:57:39,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:39,190 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 5 states. [2020-11-28 02:57:39,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:39,329 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2020-11-28 02:57:39,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:57:39,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-28 02:57:39,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:39,331 INFO L225 Difference]: With dead ends: 61 [2020-11-28 02:57:39,331 INFO L226 Difference]: Without dead ends: 57 [2020-11-28 02:57:39,332 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 [2020-11-28 02:57:39,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-28 02:57:39,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2020-11-28 02:57:39,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-28 02:57:39,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-11-28 02:57:39,339 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 14 [2020-11-28 02:57:39,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:39,340 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-11-28 02:57:39,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:57:39,340 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-11-28 02:57:39,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 02:57:39,340 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:39,345 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:39,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:39,565 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]=== [2020-11-28 02:57:39,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:39,566 INFO L82 PathProgramCache]: Analyzing trace with hash 42186397, now seen corresponding path program 1 times [2020-11-28 02:57:39,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:39,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072025675] [2020-11-28 02:57:39,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:39,576 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:39,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [732000855] [2020-11-28 02:57:39,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ffea420c-3613-4d77-869f-e0446ff3de3d/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:39,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:39,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-28 02:57:39,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:39,660 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:39,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072025675] [2020-11-28 02:57:39,661 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:39,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732000855] [2020-11-28 02:57:39,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:57:39,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-28 02:57:39,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518283962] [2020-11-28 02:57:39,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:57:39,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:39,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:57:39,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:39,663 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 5 states. [2020-11-28 02:57:39,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:39,828 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2020-11-28 02:57:39,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:57:39,831 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-28 02:57:39,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:39,832 INFO L225 Difference]: With dead ends: 57 [2020-11-28 02:57:39,832 INFO L226 Difference]: Without dead ends: 53 [2020-11-28 02:57:39,832 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 [2020-11-28 02:57:39,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-28 02:57:39,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2020-11-28 02:57:39,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-28 02:57:39,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-11-28 02:57:39,848 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 16 [2020-11-28 02:57:39,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:39,848 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-11-28 02:57:39,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:57:39,848 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-11-28 02:57:39,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 02:57:39,849 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:39,850 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:40,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:40,051 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]=== [2020-11-28 02:57:40,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:40,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1886608768, now seen corresponding path program 1 times [2020-11-28 02:57:40,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:40,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867054656] [2020-11-28 02:57:40,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:40,062 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:40,062 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1925502678] [2020-11-28 02:57:40,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ffea420c-3613-4d77-869f-e0446ff3de3d/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 02:57:40,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 02:57:40,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:40,160 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:40,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867054656] [2020-11-28 02:57:40,161 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:40,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925502678] [2020-11-28 02:57:40,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:57:40,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-28 02:57:40,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276846825] [2020-11-28 02:57:40,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 02:57:40,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:40,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 02:57:40,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 02:57:40,163 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 5 states. [2020-11-28 02:57:40,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:40,289 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-11-28 02:57:40,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 02:57:40,293 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-28 02:57:40,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:40,294 INFO L225 Difference]: With dead ends: 54 [2020-11-28 02:57:40,294 INFO L226 Difference]: Without dead ends: 44 [2020-11-28 02:57:40,294 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 [2020-11-28 02:57:40,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-28 02:57:40,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-11-28 02:57:40,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-28 02:57:40,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2020-11-28 02:57:40,301 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 18 [2020-11-28 02:57:40,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:40,305 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2020-11-28 02:57:40,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 02:57:40,305 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2020-11-28 02:57:40,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 02:57:40,306 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:40,306 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:40,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-28 02:57:40,513 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]=== [2020-11-28 02:57:40,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:40,514 INFO L82 PathProgramCache]: Analyzing trace with hash 25658831, now seen corresponding path program 2 times [2020-11-28 02:57:40,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:40,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673205399] [2020-11-28 02:57:40,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:40,527 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:40,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1753270307] [2020-11-28 02:57:40,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ffea420c-3613-4d77-869f-e0446ff3de3d/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:40,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 02:57:40,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:57:40,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-28 02:57:40,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:40,627 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:40,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673205399] [2020-11-28 02:57:40,628 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:40,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753270307] [2020-11-28 02:57:40,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:57:40,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-28 02:57:40,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286793801] [2020-11-28 02:57:40,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:57:40,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:40,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:57:40,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:57:40,630 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 6 states. [2020-11-28 02:57:40,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:40,840 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2020-11-28 02:57:40,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 02:57:40,841 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-11-28 02:57:40,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:40,842 INFO L225 Difference]: With dead ends: 68 [2020-11-28 02:57:40,842 INFO L226 Difference]: Without dead ends: 64 [2020-11-28 02:57:40,843 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 [2020-11-28 02:57:40,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-11-28 02:57:40,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2020-11-28 02:57:40,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-28 02:57:40,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-11-28 02:57:40,852 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 21 [2020-11-28 02:57:40,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:40,852 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-11-28 02:57:40,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:57:40,853 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-11-28 02:57:40,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 02:57:40,853 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 02:57:40,853 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-28 02:57:41,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:41,054 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]=== [2020-11-28 02:57:41,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 02:57:41,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1111480654, now seen corresponding path program 2 times [2020-11-28 02:57:41,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 02:57:41,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272098830] [2020-11-28 02:57:41,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 02:57:41,069 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 02:57:41,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1994381867] [2020-11-28 02:57:41,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ffea420c-3613-4d77-869f-e0446ff3de3d/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:41,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 02:57:41,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 02:57:41,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 02:57:41,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 02:57:41,172 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-28 02:57:41,176 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 02:57:41,247 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 02:57:41,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272098830] [2020-11-28 02:57:41,247 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 02:57:41,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994381867] [2020-11-28 02:57:41,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 02:57:41,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-28 02:57:41,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963793140] [2020-11-28 02:57:41,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 02:57:41,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 02:57:41,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 02:57:41,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 02:57:41,249 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 6 states. [2020-11-28 02:57:41,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 02:57:41,397 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2020-11-28 02:57:41,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 02:57:41,397 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-11-28 02:57:41,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 02:57:41,398 INFO L225 Difference]: With dead ends: 52 [2020-11-28 02:57:41,398 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 02:57:41,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-11-28 02:57:41,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 02:57:41,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 02:57:41,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 02:57:41,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 02:57:41,399 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-11-28 02:57:41,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 02:57:41,399 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 02:57:41,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 02:57:41,399 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 02:57:41,399 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 02:57:41,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 02:57:41,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 02:57:41,876 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 24 [2020-11-28 02:57:42,056 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 24 [2020-11-28 02:57:42,176 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-28 02:57:42,176 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-28 02:57:42,176 INFO L277 CegarLoopResult]: At program point L48(lines 20 49) the Hoare annotation is: true [2020-11-28 02:57:42,176 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 02:57:42,176 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-28 02:57:42,176 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 02:57:42,176 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 02:57:42,176 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-28 02:57:42,177 INFO L274 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-11-28 02:57:42,177 INFO L270 CegarLoopResult]: At program point L12-1(lines 11 17) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= ULTIMATE.start_main_~n~0 2)) (.cse2 (<= 0 ULTIMATE.start_main_~n~0)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and (= ULTIMATE.start_main_~a~0 1) .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) .cse3) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) .cse3 (= ULTIMATE.start_main_~t~0 1)))) [2020-11-28 02:57:42,177 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2020-11-28 02:57:42,177 INFO L270 CegarLoopResult]: At program point L12-3(lines 11 17) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= ULTIMATE.start_main_~n~0 2)) (.cse2 (<= 0 ULTIMATE.start_main_~n~0)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and (= ULTIMATE.start_main_~a~0 1) .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) .cse3) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) .cse3 (= ULTIMATE.start_main_~t~0 1)))) [2020-11-28 02:57:42,177 INFO L274 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-11-28 02:57:42,177 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 15) no Hoare annotation was computed. [2020-11-28 02:57:42,178 INFO L270 CegarLoopResult]: At program point L12-5(lines 36 37) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= ULTIMATE.start_main_~n~0 2)) (.cse2 (<= 0 ULTIMATE.start_main_~n~0)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and (= ULTIMATE.start_main_~a~0 1) .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) .cse3) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) .cse3 (= ULTIMATE.start_main_~t~0 1)))) [2020-11-28 02:57:42,178 INFO L274 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-11-28 02:57:42,178 INFO L270 CegarLoopResult]: At program point L12-7(lines 11 17) the Hoare annotation is: (let ((.cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (or (and .cse0 (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1))) (and .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)))) [2020-11-28 02:57:42,178 INFO L274 CegarLoopResult]: For program point L12-8(lines 12 15) no Hoare annotation was computed. [2020-11-28 02:57:42,178 INFO L270 CegarLoopResult]: At program point L12-9(lines 11 17) the Hoare annotation is: (let ((.cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (or (and .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~t~0 1)) (and .cse0 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1))))) [2020-11-28 02:57:42,178 INFO L274 CegarLoopResult]: For program point L12-10(lines 12 15) no Hoare annotation was computed. [2020-11-28 02:57:42,178 INFO L277 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: true [2020-11-28 02:57:42,179 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 02:57:42,179 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-28 02:57:42,179 INFO L274 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-11-28 02:57:42,179 INFO L274 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-11-28 02:57:42,179 INFO L274 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-11-28 02:57:42,179 INFO L274 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-11-28 02:57:42,179 INFO L274 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-11-28 02:57:42,179 INFO L274 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-11-28 02:57:42,179 INFO L274 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-11-28 02:57:42,180 INFO L270 CegarLoopResult]: At program point L30-2(lines 30 42) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~n~0 2)) (.cse1 (<= 0 ULTIMATE.start_main_~n~0)) (.cse2 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and (= ULTIMATE.start_main_~a~0 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 .cse1 (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) .cse2) (and .cse0 .cse1 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) .cse2 (= ULTIMATE.start_main_~t~0 1)))) [2020-11-28 02:57:42,180 INFO L274 CegarLoopResult]: For program point L30-3(lines 30 42) no Hoare annotation was computed. [2020-11-28 02:57:42,180 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-28 02:57:42,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:57:42 BoogieIcfgContainer [2020-11-28 02:57:42,213 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 02:57:42,213 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 02:57:42,213 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 02:57:42,213 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 02:57:42,214 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:37" (3/4) ... [2020-11-28 02:57:42,216 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 02:57:42,231 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-28 02:57:42,233 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 02:57:42,233 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:57:42,233 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 02:57:42,280 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ffea420c-3613-4d77-869f-e0446ff3de3d/bin/uautomizer/witness.graphml [2020-11-28 02:57:42,280 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 02:57:42,281 INFO L168 Benchmark]: Toolchain (without parser) took 5630.77 ms. Allocated memory was 81.8 MB in the beginning and 130.0 MB in the end (delta: 48.2 MB). Free memory was 31.1 MB in the beginning and 48.6 MB in the end (delta: -17.5 MB). Peak memory consumption was 32.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:42,282 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 81.8 MB. Free memory was 47.3 MB in the beginning and 47.2 MB in the end (delta: 69.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:42,283 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.83 ms. Allocated memory was 81.8 MB in the beginning and 107.0 MB in the end (delta: 25.2 MB). Free memory was 31.0 MB in the beginning and 83.4 MB in the end (delta: -52.4 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:42,283 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.00 ms. Allocated memory is still 107.0 MB. Free memory was 83.4 MB in the beginning and 81.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:42,284 INFO L168 Benchmark]: Boogie Preprocessor took 57.18 ms. Allocated memory is still 107.0 MB. Free memory was 81.9 MB in the beginning and 80.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 02:57:42,284 INFO L168 Benchmark]: RCFGBuilder took 423.51 ms. Allocated memory is still 107.0 MB. Free memory was 80.6 MB in the beginning and 66.7 MB in the end (delta: 13.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:42,285 INFO L168 Benchmark]: TraceAbstraction took 4747.57 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 66.2 MB in the beginning and 51.8 MB in the end (delta: 14.4 MB). Peak memory consumption was 50.4 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:42,286 INFO L168 Benchmark]: Witness Printer took 66.88 ms. Allocated memory is still 130.0 MB. Free memory was 51.8 MB in the beginning and 48.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 02:57:42,289 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 81.8 MB. Free memory was 47.3 MB in the beginning and 47.2 MB in the end (delta: 69.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 269.83 ms. Allocated memory was 81.8 MB in the beginning and 107.0 MB in the end (delta: 25.2 MB). Free memory was 31.0 MB in the beginning and 83.4 MB in the end (delta: -52.4 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.00 ms. Allocated memory is still 107.0 MB. Free memory was 83.4 MB in the beginning and 81.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.18 ms. Allocated memory is still 107.0 MB. Free memory was 81.9 MB in the beginning and 80.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 423.51 ms. Allocated memory is still 107.0 MB. Free memory was 80.6 MB in the beginning and 66.7 MB in the end (delta: 13.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4747.57 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 66.2 MB in the beginning and 51.8 MB in the end (delta: 14.4 MB). Peak memory consumption was 50.4 MB. Max. memory is 16.1 GB. * Witness Printer took 66.88 ms. Allocated memory is still 130.0 MB. Free memory was 51.8 MB in the beginning and 48.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((!(0 == cond) && a == 1) && t == 3) && s == t + 1) || (((!(0 == cond) && s == 1) && a == 0) && t == 1) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((((a == 1 && 1 <= cond) && n <= 2) && 0 <= n) && t == 3) && s == t + 1) && cond == 1) || ((((((1 <= cond && n <= 2) && 0 <= n) && s == 1) && a == 0) && cond == 1) && t == 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((((a == 1 && 1 <= cond) && n <= 2) && 0 <= n) && t == 3) && s == t + 1) && cond == 1) || (((((n <= 2 && 0 <= n) && s == 1) && a == 0) && cond == 1) && t == 1) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((a == 1 && 1 <= cond) && n <= 2) && 0 <= n) && t == 3) && s == t + 1) && cond == 1) || ((((((1 <= cond && n <= 2) && 0 <= n) && s == 1) && a == 0) && cond == 1) && t == 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((!(0 == cond) && s == 1) && t == 1) || ((!(0 == cond) && t == 3) && s == t + 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((((a == 1 && 1 <= cond) && n <= 2) && 0 <= n) && t == 3) && s == t + 1) && cond == 1) || ((((((1 <= cond && n <= 2) && 0 <= n) && s == 1) && a == 0) && cond == 1) && t == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 190 SDtfs, 128 SDslu, 306 SDs, 0 SdLazy, 389 SolverSat, 52 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 50 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 22 NumberOfFragments, 243 HoareAnnotationTreeSize, 8 FomulaSimplifications, 337 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 119 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 11352 SizeOfPredicates, 29 NumberOfNonLiveVariables, 560 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 8/38 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...