./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.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_e341b29c-0169-4f76-a226-840df6e6b523/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e341b29c-0169-4f76-a226-840df6e6b523/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e341b29c-0169-4f76-a226-840df6e6b523/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e341b29c-0169-4f76-a226-840df6e6b523/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e341b29c-0169-4f76-a226-840df6e6b523/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e341b29c-0169-4f76-a226-840df6e6b523/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0036602275d14d2f63e3aedc245d67d50c1210f9 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 03:34:01,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 03:34:01,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 03:34:01,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 03:34:01,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 03:34:01,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 03:34:01,966 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 03:34:01,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 03:34:01,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 03:34:01,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 03:34:01,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 03:34:01,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 03:34:01,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 03:34:01,993 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 03:34:01,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 03:34:01,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 03:34:02,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 03:34:02,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 03:34:02,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 03:34:02,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 03:34:02,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 03:34:02,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 03:34:02,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 03:34:02,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 03:34:02,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 03:34:02,047 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 03:34:02,047 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 03:34:02,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 03:34:02,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 03:34:02,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 03:34:02,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 03:34:02,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 03:34:02,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 03:34:02,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 03:34:02,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 03:34:02,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 03:34:02,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 03:34:02,063 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 03:34:02,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 03:34:02,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 03:34:02,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 03:34:02,070 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e341b29c-0169-4f76-a226-840df6e6b523/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 03:34:02,122 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 03:34:02,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 03:34:02,124 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 03:34:02,124 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 03:34:02,125 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 03:34:02,125 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 03:34:02,125 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 03:34:02,126 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 03:34:02,126 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 03:34:02,126 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 03:34:02,128 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 03:34:02,128 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 03:34:02,128 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 03:34:02,129 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 03:34:02,129 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 03:34:02,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 03:34:02,130 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 03:34:02,130 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 03:34:02,131 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 03:34:02,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 03:34:02,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 03:34:02,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 03:34:02,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 03:34:02,132 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 03:34:02,133 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 03:34:02,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 03:34:02,133 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 03:34:02,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 03:34:02,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 03:34:02,136 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 03:34:02,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 03:34:02,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 03:34:02,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 03:34:02,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 03:34:02,138 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 03:34:02,138 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 03:34:02,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 03:34:02,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 03:34:02,139 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 03:34:02,139 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 03:34:02,139 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_e341b29c-0169-4f76-a226-840df6e6b523/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e341b29c-0169-4f76-a226-840df6e6b523/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0036602275d14d2f63e3aedc245d67d50c1210f9 [2020-11-30 03:34:02,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 03:34:02,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 03:34:02,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 03:34:02,521 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 03:34:02,522 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 03:34:02,524 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e341b29c-0169-4f76-a226-840df6e6b523/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c [2020-11-30 03:34:02,613 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e341b29c-0169-4f76-a226-840df6e6b523/bin/utaipan/data/b2187b6a8/e985c51cd0f04815935acba00b50df0c/FLAGe1c220a4f [2020-11-30 03:34:03,316 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 03:34:03,317 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e341b29c-0169-4f76-a226-840df6e6b523/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c [2020-11-30 03:34:03,332 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e341b29c-0169-4f76-a226-840df6e6b523/bin/utaipan/data/b2187b6a8/e985c51cd0f04815935acba00b50df0c/FLAGe1c220a4f [2020-11-30 03:34:03,639 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e341b29c-0169-4f76-a226-840df6e6b523/bin/utaipan/data/b2187b6a8/e985c51cd0f04815935acba00b50df0c [2020-11-30 03:34:03,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 03:34:03,652 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 03:34:03,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 03:34:03,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 03:34:03,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 03:34:03,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:34:03" (1/1) ... [2020-11-30 03:34:03,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ff2d30b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:03, skipping insertion in model container [2020-11-30 03:34:03,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:34:03" (1/1) ... [2020-11-30 03:34:03,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 03:34:03,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 03:34:03,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:34:04,002 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 03:34:04,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:34:04,069 INFO L208 MainTranslator]: Completed translation [2020-11-30 03:34:04,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:04 WrapperNode [2020-11-30 03:34:04,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 03:34:04,072 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 03:34:04,072 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 03:34:04,072 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 03:34:04,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:04" (1/1) ... [2020-11-30 03:34:04,091 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:04" (1/1) ... [2020-11-30 03:34:04,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 03:34:04,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 03:34:04,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 03:34:04,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 03:34:04,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:04" (1/1) ... [2020-11-30 03:34:04,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:04" (1/1) ... [2020-11-30 03:34:04,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:04" (1/1) ... [2020-11-30 03:34:04,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:04" (1/1) ... [2020-11-30 03:34:04,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:04" (1/1) ... [2020-11-30 03:34:04,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:04" (1/1) ... [2020-11-30 03:34:04,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:04" (1/1) ... [2020-11-30 03:34:04,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 03:34:04,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 03:34:04,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 03:34:04,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 03:34:04,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e341b29c-0169-4f76-a226-840df6e6b523/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 03:34:04,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 03:34:04,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 03:34:04,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 03:34:04,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 03:34:04,774 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 03:34:04,774 INFO L298 CfgBuilder]: Removed 29 assume(true) statements. [2020-11-30 03:34:04,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:34:04 BoogieIcfgContainer [2020-11-30 03:34:04,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 03:34:04,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 03:34:04,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 03:34:04,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 03:34:04,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 03:34:03" (1/3) ... [2020-11-30 03:34:04,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69dececf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:34:04, skipping insertion in model container [2020-11-30 03:34:04,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:04" (2/3) ... [2020-11-30 03:34:04,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69dececf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:34:04, skipping insertion in model container [2020-11-30 03:34:04,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:34:04" (3/3) ... [2020-11-30 03:34:04,793 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound2.c [2020-11-30 03:34:04,807 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 03:34:04,813 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-30 03:34:04,827 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-30 03:34:04,869 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 03:34:04,870 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 03:34:04,870 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 03:34:04,870 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 03:34:04,870 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 03:34:04,870 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 03:34:04,871 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 03:34:04,871 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 03:34:04,891 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-30 03:34:04,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 03:34:04,899 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:34:04,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 03:34:04,901 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:34:04,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:34:04,910 INFO L82 PathProgramCache]: Analyzing trace with hash 118951587, now seen corresponding path program 1 times [2020-11-30 03:34:04,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:34:04,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859504255] [2020-11-30 03:34:04,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:34:05,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:34:05,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:34:05,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859504255] [2020-11-30 03:34:05,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:34:05,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 03:34:05,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642830788] [2020-11-30 03:34:05,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 03:34:05,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:34:05,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 03:34:05,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 03:34:05,143 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-11-30 03:34:05,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:34:05,170 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2020-11-30 03:34:05,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 03:34:05,172 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-11-30 03:34:05,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:34:05,183 INFO L225 Difference]: With dead ends: 57 [2020-11-30 03:34:05,184 INFO L226 Difference]: Without dead ends: 27 [2020-11-30 03:34:05,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 03:34:05,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-30 03:34:05,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-30 03:34:05,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 03:34:05,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-11-30 03:34:05,250 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 5 [2020-11-30 03:34:05,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:34:05,251 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-11-30 03:34:05,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 03:34:05,252 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-11-30 03:34:05,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 03:34:05,253 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:34:05,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 03:34:05,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 03:34:05,255 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:34:05,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:34:05,259 INFO L82 PathProgramCache]: Analyzing trace with hash 117507718, now seen corresponding path program 1 times [2020-11-30 03:34:05,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:34:05,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631781823] [2020-11-30 03:34:05,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:34:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:34:05,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:34:05,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631781823] [2020-11-30 03:34:05,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:34:05,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 03:34:05,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130499553] [2020-11-30 03:34:05,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 03:34:05,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:34:05,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 03:34:05,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 03:34:05,461 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 4 states. [2020-11-30 03:34:05,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:34:05,688 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2020-11-30 03:34:05,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 03:34:05,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-30 03:34:05,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:34:05,692 INFO L225 Difference]: With dead ends: 30 [2020-11-30 03:34:05,692 INFO L226 Difference]: Without dead ends: 26 [2020-11-30 03:34:05,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 03:34:05,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-30 03:34:05,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2020-11-30 03:34:05,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 03:34:05,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-11-30 03:34:05,703 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 5 [2020-11-30 03:34:05,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:34:05,704 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-11-30 03:34:05,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 03:34:05,704 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-11-30 03:34:05,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 03:34:05,705 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:34:05,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:34:05,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 03:34:05,706 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:34:05,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:34:05,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1255953641, now seen corresponding path program 1 times [2020-11-30 03:34:05,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:34:05,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502398339] [2020-11-30 03:34:05,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:34:05,743 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:34:05,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1622454494] [2020-11-30 03:34:05,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e341b29c-0169-4f76-a226-840df6e6b523/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:34:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:34:05,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 03:34:05,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:34:05,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:34:05,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:34:05,966 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 03:34:06,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:34:06,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502398339] [2020-11-30 03:34:06,002 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:34:06,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622454494] [2020-11-30 03:34:06,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:34:06,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 03:34:06,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866178179] [2020-11-30 03:34:06,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 03:34:06,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:34:06,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 03:34:06,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 03:34:06,009 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 5 states. [2020-11-30 03:34:06,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:34:06,203 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2020-11-30 03:34:06,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 03:34:06,204 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-11-30 03:34:06,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:34:06,205 INFO L225 Difference]: With dead ends: 45 [2020-11-30 03:34:06,206 INFO L226 Difference]: Without dead ends: 41 [2020-11-30 03:34:06,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-30 03:34:06,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-30 03:34:06,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2020-11-30 03:34:06,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-30 03:34:06,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-11-30 03:34:06,225 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 7 [2020-11-30 03:34:06,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:34:06,226 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-11-30 03:34:06,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 03:34:06,226 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-11-30 03:34:06,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 03:34:06,227 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:34:06,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:34:06,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-30 03:34:06,441 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:34:06,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:34:06,442 INFO L82 PathProgramCache]: Analyzing trace with hash 85825548, now seen corresponding path program 1 times [2020-11-30 03:34:06,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:34:06,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420879887] [2020-11-30 03:34:06,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:34:06,454 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:34:06,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1511515225] [2020-11-30 03:34:06,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e341b29c-0169-4f76-a226-840df6e6b523/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:34:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:34:06,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 03:34:06,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:34:06,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:34:06,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:34:06,552 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 03:34:06,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:34:06,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420879887] [2020-11-30 03:34:06,589 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:34:06,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511515225] [2020-11-30 03:34:06,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:34:06,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 03:34:06,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205982330] [2020-11-30 03:34:06,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 03:34:06,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:34:06,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 03:34:06,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 03:34:06,591 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2020-11-30 03:34:08,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:34:08,864 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2020-11-30 03:34:08,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 03:34:08,865 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-30 03:34:08,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:34:08,866 INFO L225 Difference]: With dead ends: 63 [2020-11-30 03:34:08,866 INFO L226 Difference]: Without dead ends: 50 [2020-11-30 03:34:08,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-30 03:34:08,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-30 03:34:08,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2020-11-30 03:34:08,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-30 03:34:08,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-11-30 03:34:08,879 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 9 [2020-11-30 03:34:08,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:34:08,879 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-11-30 03:34:08,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 03:34:08,880 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-11-30 03:34:08,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 03:34:08,881 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:34:08,881 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:34:09,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:34:09,095 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:34:09,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:34:09,096 INFO L82 PathProgramCache]: Analyzing trace with hash -349771845, now seen corresponding path program 1 times [2020-11-30 03:34:09,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:34:09,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683966575] [2020-11-30 03:34:09,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:34:09,115 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:34:09,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [787236852] [2020-11-30 03:34:09,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e341b29c-0169-4f76-a226-840df6e6b523/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:34:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:34:09,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 03:34:09,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:34:09,216 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:34:09,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:34:09,237 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 03:34:09,309 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:34:09,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683966575] [2020-11-30 03:34:09,310 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:34:09,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787236852] [2020-11-30 03:34:09,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1144936364] [2020-11-30 03:34:09,351 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2020-11-30 03:34:09,352 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 03:34:09,357 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 03:34:09,379 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 03:34:09,380 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 03:34:10,296 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 03:34:10,588 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 51 [2020-11-30 03:34:11,018 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-11-30 03:34:11,622 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2020-11-30 03:34:12,139 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-11-30 03:34:12,536 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2020-11-30 03:34:13,003 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2020-11-30 03:34:13,279 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-11-30 03:34:17,742 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2020-11-30 03:34:18,171 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-11-30 03:34:18,175 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:34:18,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 03:34:18,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-11-30 03:34:18,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659348797] [2020-11-30 03:34:18,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 03:34:18,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:34:18,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 03:34:18,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=198, Unknown=2, NotChecked=0, Total=240 [2020-11-30 03:34:18,177 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 7 states. [2020-11-30 03:34:25,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:34:25,157 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions. [2020-11-30 03:34:25,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 03:34:25,160 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-11-30 03:34:25,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:34:25,162 INFO L225 Difference]: With dead ends: 78 [2020-11-30 03:34:25,162 INFO L226 Difference]: Without dead ends: 70 [2020-11-30 03:34:25,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=74, Invalid=344, Unknown=2, NotChecked=0, Total=420 [2020-11-30 03:34:25,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-11-30 03:34:25,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 59. [2020-11-30 03:34:25,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-30 03:34:25,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-11-30 03:34:25,190 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 15 [2020-11-30 03:34:25,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:34:25,190 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-11-30 03:34:25,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 03:34:25,191 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-11-30 03:34:25,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 03:34:25,192 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:34:25,192 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2020-11-30 03:34:25,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:34:25,419 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:34:25,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:34:25,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1704627536, now seen corresponding path program 1 times [2020-11-30 03:34:25,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:34:25,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390990626] [2020-11-30 03:34:25,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:34:25,432 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:34:25,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [976759180] [2020-11-30 03:34:25,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e341b29c-0169-4f76-a226-840df6e6b523/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:34:25,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:34:25,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 03:34:25,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:34:25,572 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:34:25,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:34:25,591 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:34:25,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390990626] [2020-11-30 03:34:25,592 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:34:25,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976759180] [2020-11-30 03:34:25,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1976158758] [2020-11-30 03:34:25,595 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2020-11-30 03:34:25,595 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 03:34:25,596 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 03:34:25,596 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 03:34:25,596 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 03:34:26,144 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 03:34:26,486 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2020-11-30 03:34:26,993 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-11-30 03:34:27,498 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2020-11-30 03:34:27,938 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2020-11-30 03:34:28,407 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2020-11-30 03:34:29,046 WARN L193 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2020-11-30 03:34:29,341 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2020-11-30 03:34:31,832 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2020-11-30 03:34:32,256 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2020-11-30 03:34:32,260 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:34:32,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 03:34:32,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-11-30 03:34:32,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781087573] [2020-11-30 03:34:32,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 03:34:32,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:34:32,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 03:34:32,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=157, Unknown=1, NotChecked=0, Total=210 [2020-11-30 03:34:32,262 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 6 states. [2020-11-30 03:34:32,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:34:32,367 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2020-11-30 03:34:32,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 03:34:32,372 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-11-30 03:34:32,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:34:32,373 INFO L225 Difference]: With dead ends: 67 [2020-11-30 03:34:32,373 INFO L226 Difference]: Without dead ends: 27 [2020-11-30 03:34:32,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=58, Invalid=181, Unknown=1, NotChecked=0, Total=240 [2020-11-30 03:34:32,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-30 03:34:32,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-30 03:34:32,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 03:34:32,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2020-11-30 03:34:32,379 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 25 [2020-11-30 03:34:32,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:34:32,379 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2020-11-30 03:34:32,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 03:34:32,379 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2020-11-30 03:34:32,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 03:34:32,380 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:34:32,380 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:34:32,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:34:32,599 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:34:32,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:34:32,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1710738970, now seen corresponding path program 1 times [2020-11-30 03:34:32,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:34:32,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980051193] [2020-11-30 03:34:32,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:34:32,608 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:34:32,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [427345554] [2020-11-30 03:34:32,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e341b29c-0169-4f76-a226-840df6e6b523/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:34:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:34:32,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 03:34:32,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:34:32,751 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:34:32,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:34:32,823 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-30 03:34:32,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980051193] [2020-11-30 03:34:32,824 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:34:32,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427345554] [2020-11-30 03:34:32,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-30 03:34:32,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2020-11-30 03:34:32,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802108310] [2020-11-30 03:34:32,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 03:34:32,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:34:32,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 03:34:32,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-30 03:34:32,827 INFO L87 Difference]: Start difference. First operand 27 states and 26 transitions. Second operand 4 states. [2020-11-30 03:34:32,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:34:32,991 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2020-11-30 03:34:32,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 03:34:32,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-11-30 03:34:32,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:34:32,993 INFO L225 Difference]: With dead ends: 27 [2020-11-30 03:34:32,994 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 03:34:32,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-30 03:34:32,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 03:34:32,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 03:34:32,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 03:34:32,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 03:34:32,996 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2020-11-30 03:34:32,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:34:32,996 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 03:34:32,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 03:34:32,996 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 03:34:32,996 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 03:34:33,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2020-11-30 03:34:33,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 03:34:42,495 WARN L193 SmtUtils]: Spent 9.25 s on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-11-30 03:34:42,815 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2020-11-30 03:34:50,120 WARN L193 SmtUtils]: Spent 7.30 s on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-11-30 03:34:50,521 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2020-11-30 03:34:51,883 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 36 DAG size of output: 19 [2020-11-30 03:34:52,273 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2020-11-30 03:34:52,275 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 03:34:52,276 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 03:34:52,276 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 03:34:52,276 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 03:34:52,276 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 03:34:52,276 INFO L274 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-11-30 03:34:52,276 INFO L270 CegarLoopResult]: At program point L12-1(lines 11 17) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* ULTIMATE.start_main_~s~0 4)) (<= 1 ~counter~0) .cse0 (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)) (and (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~s~0 4) .cse0 (<= 2 ~counter~0) (= (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (* ULTIMATE.start_main_~a~0 4) 2) (+ ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~s~0))))) [2020-11-30 03:34:52,276 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2020-11-30 03:34:52,277 INFO L270 CegarLoopResult]: At program point L12-3(lines 11 17) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* ULTIMATE.start_main_~s~0 4)) (<= 1 ~counter~0) .cse0 (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)) (and (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~s~0 4) .cse0 (<= 2 ~counter~0) (= (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (* ULTIMATE.start_main_~a~0 4) 2) (+ ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~s~0))))) [2020-11-30 03:34:52,277 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 15) no Hoare annotation was computed. [2020-11-30 03:34:52,277 INFO L270 CegarLoopResult]: At program point L12-5(lines 36 37) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond))) (or (and (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* ULTIMATE.start_main_~s~0 4)) (<= 1 ~counter~0) .cse0 (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1)) (and (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~s~0 4) .cse0 (<= 2 ~counter~0) (= (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (* ULTIMATE.start_main_~a~0 4) 2) (+ ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~s~0))))) [2020-11-30 03:34:52,277 INFO L274 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-11-30 03:34:52,277 INFO L270 CegarLoopResult]: At program point L12-7(lines 11 17) the Hoare annotation is: (let ((.cse3 (* ULTIMATE.start_main_~a~0 2))) (let ((.cse1 (= (+ .cse3 1) ULTIMATE.start_main_~t~0)) (.cse2 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)) (.cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (or (and (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* ULTIMATE.start_main_~s~0 4)) .cse0 .cse1 (<= 2 ~counter~0) (= ULTIMATE.start_main_~s~0 (+ .cse2 .cse3 1))) (and (= ULTIMATE.start_main_~a~0 1) .cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ .cse2 (* ULTIMATE.start_main_~a~0 4) 2) (+ ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~s~0))) (and .cse0 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1))))) [2020-11-30 03:34:52,277 INFO L274 CegarLoopResult]: For program point L12-8(lines 12 15) no Hoare annotation was computed. [2020-11-30 03:34:52,277 INFO L270 CegarLoopResult]: At program point L12-9(lines 11 17) the Hoare annotation is: (and (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* ULTIMATE.start_main_~s~0 4)) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= (+ (* ULTIMATE.start_main_~a~0 2) 1) ULTIMATE.start_main_~t~0)) [2020-11-30 03:34:52,277 INFO L274 CegarLoopResult]: For program point L12-10(lines 12 15) no Hoare annotation was computed. [2020-11-30 03:34:52,277 INFO L277 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: true [2020-11-30 03:34:52,277 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 03:34:52,278 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 03:34:52,278 INFO L274 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-11-30 03:34:52,278 INFO L274 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-11-30 03:34:52,278 INFO L274 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-11-30 03:34:52,278 INFO L274 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-11-30 03:34:52,278 INFO L274 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-11-30 03:34:52,278 INFO L274 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-11-30 03:34:52,278 INFO L274 CegarLoopResult]: For program point L30-1(lines 30 42) no Hoare annotation was computed. [2020-11-30 03:34:52,278 INFO L270 CegarLoopResult]: At program point L30-3(lines 30 42) the Hoare annotation is: (let ((.cse1 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))) (let ((.cse2 (* ULTIMATE.start_main_~a~0 2)) (.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= (+ .cse1 (* ULTIMATE.start_main_~a~0 4) 2) (+ ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~s~0)))) (or (and (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1) (<= 0 ~counter~0)) (and (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* ULTIMATE.start_main_~s~0 4)) .cse0 (<= 2 ~counter~0) (= ULTIMATE.start_main_~s~0 (+ .cse1 .cse2 1)) .cse3) (and (<= 1 ~counter~0) (= ULTIMATE.start_main_~a~0 1) (= (+ .cse2 1) ULTIMATE.start_main_~t~0) .cse0 .cse3)))) [2020-11-30 03:34:52,278 INFO L274 CegarLoopResult]: For program point L30-4(lines 30 42) no Hoare annotation was computed. [2020-11-30 03:34:52,278 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 03:34:52,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 03:34:52 BoogieIcfgContainer [2020-11-30 03:34:52,302 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 03:34:52,303 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 03:34:52,303 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 03:34:52,303 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 03:34:52,304 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:34:04" (3/4) ... [2020-11-30 03:34:52,307 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 03:34:52,318 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-30 03:34:52,318 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 03:34:52,319 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 03:34:52,319 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 03:34:52,391 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e341b29c-0169-4f76-a226-840df6e6b523/bin/utaipan/witness.graphml [2020-11-30 03:34:52,395 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 03:34:52,396 INFO L168 Benchmark]: Toolchain (without parser) took 48743.79 ms. Allocated memory was 111.1 MB in the beginning and 169.9 MB in the end (delta: 58.7 MB). Free memory was 81.7 MB in the beginning and 136.8 MB in the end (delta: -55.2 MB). Peak memory consumption was 2.5 MB. Max. memory is 16.1 GB. [2020-11-30 03:34:52,397 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 83.9 MB. Free memory is still 40.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:34:52,397 INFO L168 Benchmark]: CACSL2BoogieTranslator took 413.61 ms. Allocated memory is still 111.1 MB. Free memory was 81.7 MB in the beginning and 87.9 MB in the end (delta: -6.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 03:34:52,397 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.21 ms. Allocated memory is still 111.1 MB. Free memory was 87.9 MB in the beginning and 86.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 03:34:52,398 INFO L168 Benchmark]: Boogie Preprocessor took 57.83 ms. Allocated memory is still 111.1 MB. Free memory was 86.4 MB in the beginning and 85.4 MB in the end (delta: 996.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:34:52,398 INFO L168 Benchmark]: RCFGBuilder took 592.18 ms. Allocated memory is still 111.1 MB. Free memory was 85.4 MB in the beginning and 69.0 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-30 03:34:52,399 INFO L168 Benchmark]: TraceAbstraction took 47520.66 ms. Allocated memory was 111.1 MB in the beginning and 169.9 MB in the end (delta: 58.7 MB). Free memory was 68.6 MB in the beginning and 140.0 MB in the end (delta: -71.4 MB). Peak memory consumption was 81.6 MB. Max. memory is 16.1 GB. [2020-11-30 03:34:52,400 INFO L168 Benchmark]: Witness Printer took 92.27 ms. Allocated memory is still 169.9 MB. Free memory was 140.0 MB in the beginning and 136.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 03:34:52,404 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 83.9 MB. Free memory is still 40.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 413.61 ms. Allocated memory is still 111.1 MB. Free memory was 81.7 MB in the beginning and 87.9 MB in the end (delta: -6.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.21 ms. Allocated memory is still 111.1 MB. Free memory was 87.9 MB in the beginning and 86.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.83 ms. Allocated memory is still 111.1 MB. Free memory was 86.4 MB in the beginning and 85.4 MB in the end (delta: 996.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 592.18 ms. Allocated memory is still 111.1 MB. Free memory was 85.4 MB in the beginning and 69.0 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 47520.66 ms. Allocated memory was 111.1 MB in the beginning and 169.9 MB in the end (delta: 58.7 MB). Free memory was 68.6 MB in the beginning and 140.0 MB in the end (delta: -71.4 MB). Peak memory consumption was 81.6 MB. Max. memory is 16.1 GB. * Witness Printer took 92.27 ms. Allocated memory is still 169.9 MB. Free memory was 140.0 MB in the beginning and 136.8 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: (((((t * 2 + t * t + 1 == s * 4 && !(0 == cond)) && a * 2 + 1 == t) && 2 <= counter) && s == a * a + a * 2 + 1) || (((a == 1 && a * 2 + 1 == t) && 1 <= cond) && a * a + a * 4 + 2 == t + s)) || (((!(0 == cond) && s == 1) && a == 0) && t == 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((t * 2 + t * t + 1 == s * 4 && 1 <= counter) && 1 <= cond) && a == 0) && t == 1) || ((((a == 1 && s == 4) && 1 <= cond) && 2 <= counter) && a * a + a * 4 + 2 == t + s) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((s == 1 && a == 0) && t == 1) && 0 <= counter) || ((((t * 2 + t * t + 1 == s * 4 && 1 <= cond) && 2 <= counter) && s == a * a + a * 2 + 1) && a * a + a * 4 + 2 == t + s)) || ((((1 <= counter && a == 1) && a * 2 + 1 == t) && 1 <= cond) && a * a + a * 4 + 2 == t + s) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((t * 2 + t * t + 1 == s * 4 && 1 <= counter) && 1 <= cond) && a == 0) && t == 1) || ((((a == 1 && s == 4) && 1 <= cond) && 2 <= counter) && a * a + a * 4 + 2 == t + s) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (t * 2 + t * t + 1 == s * 4 && !(0 == cond)) && a * 2 + 1 == t - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((t * 2 + t * t + 1 == s * 4 && 1 <= counter) && 1 <= cond) && a == 0) && t == 1) || ((((a == 1 && s == 4) && 1 <= cond) && 2 <= counter) && a * a + a * 4 + 2 == t + s) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 28.3s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 10.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 19.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 120 SDtfs, 157 SDslu, 139 SDs, 0 SdLazy, 208 SolverSat, 67 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 9.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 210 GetRequests, 155 SyntacticMatches, 4 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 14.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 27 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 23 NumberOfFragments, 340 HoareAnnotationTreeSize, 7 FomulaSimplifications, 233 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 270 FormulaSimplificationTreeSizeReductionInter, 19.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 162 ConstructedInterpolants, 0 QuantifiedInterpolants, 20157 SizeOfPredicates, 19 NumberOfNonLiveVariables, 440 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 12 InterpolantComputations, 7 PerfectInterpolantSequences, 52/78 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...