./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0e7804d7-23a4-478b-9442-482028cb4f23/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0e7804d7-23a4-478b-9442-482028cb4f23/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0e7804d7-23a4-478b-9442-482028cb4f23/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0e7804d7-23a4-478b-9442-482028cb4f23/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound50.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0e7804d7-23a4-478b-9442-482028cb4f23/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0e7804d7-23a4-478b-9442-482028cb4f23/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 81014c96bc70cd23b6ae4a591041fac1c8a06131 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 15:58:56,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 15:58:56,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 15:58:56,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 15:58:56,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 15:58:56,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 15:58:56,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 15:58:56,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 15:58:56,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 15:58:56,254 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 15:58:56,255 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 15:58:56,256 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 15:58:56,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 15:58:56,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 15:58:56,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 15:58:56,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 15:58:56,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 15:58:56,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 15:58:56,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 15:58:56,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 15:58:56,265 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 15:58:56,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 15:58:56,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 15:58:56,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 15:58:56,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 15:58:56,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 15:58:56,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 15:58:56,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 15:58:56,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 15:58:56,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 15:58:56,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 15:58:56,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 15:58:56,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 15:58:56,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 15:58:56,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 15:58:56,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 15:58:56,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 15:58:56,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 15:58:56,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 15:58:56,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 15:58:56,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 15:58:56,279 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0e7804d7-23a4-478b-9442-482028cb4f23/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 15:58:56,296 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 15:58:56,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 15:58:56,297 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 15:58:56,297 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 15:58:56,297 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 15:58:56,297 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 15:58:56,297 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 15:58:56,298 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 15:58:56,298 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 15:58:56,298 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 15:58:56,298 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 15:58:56,298 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 15:58:56,298 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 15:58:56,298 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 15:58:56,298 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 15:58:56,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 15:58:56,299 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 15:58:56,299 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 15:58:56,299 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 15:58:56,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 15:58:56,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 15:58:56,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 15:58:56,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 15:58:56,300 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 15:58:56,300 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 15:58:56,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 15:58:56,300 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 15:58:56,300 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 15:58:56,300 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 15:58:56,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 15:58:56,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 15:58:56,301 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 15:58:56,301 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 15:58:56,301 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 15:58:56,301 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 15:58:56,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 15:58:56,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 15:58:56,302 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 15:58:56,302 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 15:58:56,302 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_0e7804d7-23a4-478b-9442-482028cb4f23/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0e7804d7-23a4-478b-9442-482028cb4f23/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81014c96bc70cd23b6ae4a591041fac1c8a06131 [2020-12-09 15:58:56,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 15:58:56,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 15:58:56,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 15:58:56,488 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 15:58:56,488 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 15:58:56,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0e7804d7-23a4-478b-9442-482028cb4f23/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound50.c [2020-12-09 15:58:56,529 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0e7804d7-23a4-478b-9442-482028cb4f23/bin/utaipan/data/66e252b45/ad697cb505af4864bc03e4830d57adc3/FLAG59bcbc03f [2020-12-09 15:58:56,886 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 15:58:56,887 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0e7804d7-23a4-478b-9442-482028cb4f23/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound50.c [2020-12-09 15:58:56,892 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0e7804d7-23a4-478b-9442-482028cb4f23/bin/utaipan/data/66e252b45/ad697cb505af4864bc03e4830d57adc3/FLAG59bcbc03f [2020-12-09 15:58:56,901 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0e7804d7-23a4-478b-9442-482028cb4f23/bin/utaipan/data/66e252b45/ad697cb505af4864bc03e4830d57adc3 [2020-12-09 15:58:56,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 15:58:56,904 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 15:58:56,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 15:58:56,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 15:58:56,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 15:58:56,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:58:56" (1/1) ... [2020-12-09 15:58:56,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30514d4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:56, skipping insertion in model container [2020-12-09 15:58:56,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:58:56" (1/1) ... [2020-12-09 15:58:56,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 15:58:56,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 15:58:57,028 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_0e7804d7-23a4-478b-9442-482028cb4f23/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound50.c[490,503] [2020-12-09 15:58:57,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 15:58:57,050 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 15:58:57,059 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_0e7804d7-23a4-478b-9442-482028cb4f23/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound50.c[490,503] [2020-12-09 15:58:57,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 15:58:57,076 INFO L208 MainTranslator]: Completed translation [2020-12-09 15:58:57,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:57 WrapperNode [2020-12-09 15:58:57,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 15:58:57,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 15:58:57,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 15:58:57,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 15:58:57,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:57" (1/1) ... [2020-12-09 15:58:57,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:57" (1/1) ... [2020-12-09 15:58:57,105 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 15:58:57,106 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 15:58:57,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 15:58:57,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 15:58:57,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:57" (1/1) ... [2020-12-09 15:58:57,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:57" (1/1) ... [2020-12-09 15:58:57,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:57" (1/1) ... [2020-12-09 15:58:57,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:57" (1/1) ... [2020-12-09 15:58:57,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:57" (1/1) ... [2020-12-09 15:58:57,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:57" (1/1) ... [2020-12-09 15:58:57,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:57" (1/1) ... [2020-12-09 15:58:57,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 15:58:57,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 15:58:57,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 15:58:57,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 15:58:57,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0e7804d7-23a4-478b-9442-482028cb4f23/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 [2020-12-09 15:58:57,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 15:58:57,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 15:58:57,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 15:58:57,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 15:59:05,571 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 15:59:05,571 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2020-12-09 15:59:05,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:59:05 BoogieIcfgContainer [2020-12-09 15:59:05,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 15:59:05,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 15:59:05,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 15:59:05,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 15:59:05,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:58:56" (1/3) ... [2020-12-09 15:59:05,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c47c033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:59:05, skipping insertion in model container [2020-12-09 15:59:05,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:58:57" (2/3) ... [2020-12-09 15:59:05,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c47c033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:59:05, skipping insertion in model container [2020-12-09 15:59:05,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:59:05" (3/3) ... [2020-12-09 15:59:05,578 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound50.c [2020-12-09 15:59:05,588 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 15:59:05,590 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 15:59:05,604 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 15:59:05,624 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 15:59:05,624 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 15:59:05,624 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 15:59:05,624 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 15:59:05,624 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 15:59:05,624 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 15:59:05,624 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 15:59:05,624 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 15:59:05,637 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-12-09 15:59:05,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 15:59:05,641 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:59:05,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 15:59:05,642 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]=== [2020-12-09 15:59:05,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:59:05,647 INFO L82 PathProgramCache]: Analyzing trace with hash 189711168, now seen corresponding path program 1 times [2020-12-09 15:59:05,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:59:05,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347221594] [2020-12-09 15:59:05,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:59:05,707 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 15:59:05,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [885379619] [2020-12-09 15:59:05,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0e7804d7-23a4-478b-9442-482028cb4f23/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 [2020-12-09 15:59:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:59:05,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 15:59:05,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:59:05,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:59:05,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 15:59:05,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:59:05,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347221594] [2020-12-09 15:59:05,773 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 15:59:05,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885379619] [2020-12-09 15:59:05,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:59:05,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-09 15:59:05,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125587842] [2020-12-09 15:59:05,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 15:59:05,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:59:05,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 15:59:05,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 15:59:05,788 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2020-12-09 15:59:05,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:59:05,800 INFO L93 Difference]: Finished difference Result 61 states and 79 transitions. [2020-12-09 15:59:05,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 15:59:05,801 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-09 15:59:05,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:59:05,806 INFO L225 Difference]: With dead ends: 61 [2020-12-09 15:59:05,806 INFO L226 Difference]: Without dead ends: 29 [2020-12-09 15:59:05,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 15:59:05,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-09 15:59:05,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-09 15:59:05,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-09 15:59:05,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-12-09 15:59:05,831 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 5 [2020-12-09 15:59:05,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:59:05,831 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-12-09 15:59:05,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 15:59:05,831 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-12-09 15:59:05,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 15:59:05,831 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:59:05,831 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 15:59:06,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-12-09 15:59:06,032 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]=== [2020-12-09 15:59:06,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:59:06,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1480645745, now seen corresponding path program 1 times [2020-12-09 15:59:06,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:59:06,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294844164] [2020-12-09 15:59:06,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:59:06,037 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 15:59:06,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [963132085] [2020-12-09 15:59:06,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0e7804d7-23a4-478b-9442-482028cb4f23/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 [2020-12-09 15:59:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:59:06,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 15:59:06,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:59:06,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:59:06,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 15:59:06,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:59:06,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294844164] [2020-12-09 15:59:06,104 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 15:59:06,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963132085] [2020-12-09 15:59:06,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:59:06,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-09 15:59:06,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162201188] [2020-12-09 15:59:06,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 15:59:06,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:59:06,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 15:59:06,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:59:06,107 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 3 states. [2020-12-09 15:59:06,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:59:06,137 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2020-12-09 15:59:06,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 15:59:06,138 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-09 15:59:06,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:59:06,139 INFO L225 Difference]: With dead ends: 57 [2020-12-09 15:59:06,139 INFO L226 Difference]: Without dead ends: 49 [2020-12-09 15:59:06,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 15:59:06,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-09 15:59:06,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 31. [2020-12-09 15:59:06,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-09 15:59:06,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-12-09 15:59:06,145 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 6 [2020-12-09 15:59:06,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:59:06,146 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-12-09 15:59:06,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 15:59:06,146 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-12-09 15:59:06,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 15:59:06,146 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:59:06,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 15:59:06,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 15:59:06,349 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]=== [2020-12-09 15:59:06,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:59:06,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1480649719, now seen corresponding path program 1 times [2020-12-09 15:59:06,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:59:06,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907821633] [2020-12-09 15:59:06,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:59:06,370 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 15:59:06,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [32408477] [2020-12-09 15:59:06,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0e7804d7-23a4-478b-9442-482028cb4f23/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 [2020-12-09 15:59:06,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:59:06,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-09 15:59:06,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:59:06,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:59:06,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 15:59:06,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:59:06,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907821633] [2020-12-09 15:59:06,472 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 15:59:06,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32408477] [2020-12-09 15:59:06,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:59:06,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-12-09 15:59:06,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381605167] [2020-12-09 15:59:06,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 15:59:06,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:59:06,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 15:59:06,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-09 15:59:06,474 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 7 states. [2020-12-09 15:59:10,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:59:10,647 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2020-12-09 15:59:10,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-09 15:59:10,647 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2020-12-09 15:59:10,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:59:10,650 INFO L225 Difference]: With dead ends: 99 [2020-12-09 15:59:10,650 INFO L226 Difference]: Without dead ends: 97 [2020-12-09 15:59:10,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2020-12-09 15:59:10,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-12-09 15:59:10,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 42. [2020-12-09 15:59:10,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-09 15:59:10,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2020-12-09 15:59:10,660 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 6 [2020-12-09 15:59:10,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:59:10,661 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2020-12-09 15:59:10,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 15:59:10,661 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2020-12-09 15:59:10,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 15:59:10,661 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:59:10,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:59:10,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 15:59:10,863 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]=== [2020-12-09 15:59:10,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:59:10,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1270362266, now seen corresponding path program 1 times [2020-12-09 15:59:10,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:59:10,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821034659] [2020-12-09 15:59:10,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:59:10,881 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 15:59:10,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [985036685] [2020-12-09 15:59:10,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0e7804d7-23a4-478b-9442-482028cb4f23/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 [2020-12-09 15:59:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:59:10,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 15:59:10,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:59:10,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:59:10,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 15:59:10,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:59:10,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821034659] [2020-12-09 15:59:10,981 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 15:59:10,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985036685] [2020-12-09 15:59:10,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:59:10,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 15:59:10,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504075204] [2020-12-09 15:59:10,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 15:59:10,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:59:10,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 15:59:10,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 15:59:10,983 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 6 states. [2020-12-09 15:59:11,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:59:11,045 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2020-12-09 15:59:11,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 15:59:11,046 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-12-09 15:59:11,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:59:11,047 INFO L225 Difference]: With dead ends: 62 [2020-12-09 15:59:11,047 INFO L226 Difference]: Without dead ends: 60 [2020-12-09 15:59:11,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-09 15:59:11,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-09 15:59:11,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2020-12-09 15:59:11,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-09 15:59:11,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2020-12-09 15:59:11,054 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 8 [2020-12-09 15:59:11,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:59:11,054 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2020-12-09 15:59:11,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 15:59:11,054 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2020-12-09 15:59:11,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 15:59:11,054 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:59:11,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:59:11,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 15:59:11,256 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]=== [2020-12-09 15:59:11,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:59:11,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1047583197, now seen corresponding path program 1 times [2020-12-09 15:59:11,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:59:11,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142124639] [2020-12-09 15:59:11,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:59:11,268 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 15:59:11,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [800746866] [2020-12-09 15:59:11,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0e7804d7-23a4-478b-9442-482028cb4f23/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 [2020-12-09 15:59:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:59:11,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 15:59:11,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:59:11,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:59:11,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 15:59:11,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:59:11,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142124639] [2020-12-09 15:59:11,382 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 15:59:11,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800746866] [2020-12-09 15:59:11,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:59:11,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 15:59:11,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339016189] [2020-12-09 15:59:11,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 15:59:11,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:59:11,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 15:59:11,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 15:59:11,383 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 6 states. [2020-12-09 15:59:11,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:59:11,459 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2020-12-09 15:59:11,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 15:59:11,459 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-09 15:59:11,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:59:11,460 INFO L225 Difference]: With dead ends: 60 [2020-12-09 15:59:11,460 INFO L226 Difference]: Without dead ends: 58 [2020-12-09 15:59:11,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-09 15:59:11,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-09 15:59:11,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2020-12-09 15:59:11,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-09 15:59:11,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2020-12-09 15:59:11,467 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 10 [2020-12-09 15:59:11,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:59:11,467 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2020-12-09 15:59:11,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 15:59:11,467 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2020-12-09 15:59:11,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 15:59:11,467 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 15:59:11,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 15:59:11,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 15:59:11,669 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]=== [2020-12-09 15:59:11,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 15:59:11,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1705263040, now seen corresponding path program 1 times [2020-12-09 15:59:11,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 15:59:11,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888122947] [2020-12-09 15:59:11,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 15:59:11,681 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 15:59:11,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1002356073] [2020-12-09 15:59:11,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0e7804d7-23a4-478b-9442-482028cb4f23/bin/utaipan/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 [2020-12-09 15:59:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 15:59:11,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-09 15:59:11,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 15:59:13,770 WARN L197 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 15 [2020-12-09 15:59:17,837 WARN L197 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 27 DAG size of output: 17 [2020-12-09 15:59:17,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:59:17,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 15:59:17,876 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 2, 2, 1] term [2020-12-09 15:59:17,876 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 15:59:17,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 15:59:17,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888122947] [2020-12-09 15:59:17,915 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 15:59:17,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002356073] [2020-12-09 15:59:17,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 15:59:17,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-12-09 15:59:17,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319315564] [2020-12-09 15:59:17,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 15:59:17,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 15:59:17,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 15:59:17,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-09 15:59:17,917 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 8 states. [2020-12-09 15:59:17,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 15:59:17,919 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2020-12-09 15:59:17,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 15:59:17,919 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-12-09 15:59:17,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 15:59:17,919 INFO L225 Difference]: With dead ends: 53 [2020-12-09 15:59:17,919 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 15:59:17,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-09 15:59:17,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 15:59:17,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 15:59:17,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 15:59:17,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 15:59:17,920 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-12-09 15:59:17,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 15:59:17,920 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 15:59:17,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 15:59:17,920 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 15:59:17,920 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 15:59:18,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 15:59:18,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 15:59:18,144 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 15:59:18,144 INFO L262 CegarLoopResult]: For program point L11(lines 11 14) no Hoare annotation was computed. [2020-12-09 15:59:18,144 INFO L258 CegarLoopResult]: At program point L11-2(lines 10 16) the Hoare annotation is: false [2020-12-09 15:59:18,144 INFO L262 CegarLoopResult]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2020-12-09 15:59:18,145 INFO L258 CegarLoopResult]: At program point L11-5(lines 10 16) the Hoare annotation is: false [2020-12-09 15:59:18,145 INFO L262 CegarLoopResult]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2020-12-09 15:59:18,145 INFO L258 CegarLoopResult]: At program point L11-8(lines 10 16) the Hoare annotation is: false [2020-12-09 15:59:18,145 INFO L262 CegarLoopResult]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2020-12-09 15:59:18,145 INFO L258 CegarLoopResult]: At program point L11-11(lines 52 53) the Hoare annotation is: false [2020-12-09 15:59:18,145 INFO L262 CegarLoopResult]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2020-12-09 15:59:18,145 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 15:59:18,145 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 15:59:18,145 INFO L258 CegarLoopResult]: At program point L11-14(lines 10 16) the Hoare annotation is: false [2020-12-09 15:59:18,145 INFO L262 CegarLoopResult]: For program point L11-15(lines 11 14) no Hoare annotation was computed. [2020-12-09 15:59:18,145 INFO L265 CegarLoopResult]: At program point L11-17(lines 10 16) the Hoare annotation is: true [2020-12-09 15:59:18,145 INFO L262 CegarLoopResult]: For program point L12(lines 12 13) no Hoare annotation was computed. [2020-12-09 15:59:18,145 INFO L262 CegarLoopResult]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2020-12-09 15:59:18,145 INFO L262 CegarLoopResult]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2020-12-09 15:59:18,146 INFO L262 CegarLoopResult]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2020-12-09 15:59:18,146 INFO L262 CegarLoopResult]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2020-12-09 15:59:18,146 INFO L262 CegarLoopResult]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2020-12-09 15:59:18,146 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 15:59:18,146 INFO L258 CegarLoopResult]: At program point L47-2(lines 47 56) the Hoare annotation is: false [2020-12-09 15:59:18,146 INFO L262 CegarLoopResult]: For program point L47-3(lines 47 56) no Hoare annotation was computed. [2020-12-09 15:59:18,146 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 15:59:18,146 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 15:59:18,146 INFO L258 CegarLoopResult]: At program point L41-1(lines 7 68) the Hoare annotation is: false [2020-12-09 15:59:18,146 INFO L262 CegarLoopResult]: For program point L41-2(lines 41 68) no Hoare annotation was computed. [2020-12-09 15:59:18,146 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 15:59:18,146 INFO L262 CegarLoopResult]: For program point L42(lines 42 43) no Hoare annotation was computed. [2020-12-09 15:59:18,146 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 15:59:18,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:59:18 BoogieIcfgContainer [2020-12-09 15:59:18,153 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 15:59:18,153 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 15:59:18,153 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 15:59:18,153 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 15:59:18,153 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:59:05" (3/4) ... [2020-12-09 15:59:18,155 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 15:59:18,163 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2020-12-09 15:59:18,163 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-09 15:59:18,163 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 15:59:18,164 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 15:59:18,197 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0e7804d7-23a4-478b-9442-482028cb4f23/bin/utaipan/witness.graphml [2020-12-09 15:59:18,197 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 15:59:18,198 INFO L168 Benchmark]: Toolchain (without parser) took 21294.31 ms. Allocated memory is still 102.8 MB. Free memory was 72.5 MB in the beginning and 56.6 MB in the end (delta: 16.0 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. [2020-12-09 15:59:18,198 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 102.8 MB. Free memory is still 80.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 15:59:18,199 INFO L168 Benchmark]: CACSL2BoogieTranslator took 172.04 ms. Allocated memory is still 102.8 MB. Free memory was 72.3 MB in the beginning and 62.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 15:59:18,199 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.06 ms. Allocated memory is still 102.8 MB. Free memory was 62.0 MB in the beginning and 60.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 15:59:18,199 INFO L168 Benchmark]: Boogie Preprocessor took 18.59 ms. Allocated memory is still 102.8 MB. Free memory was 60.3 MB in the beginning and 59.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 15:59:18,200 INFO L168 Benchmark]: RCFGBuilder took 8447.55 ms. Allocated memory is still 102.8 MB. Free memory was 58.9 MB in the beginning and 49.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. [2020-12-09 15:59:18,200 INFO L168 Benchmark]: TraceAbstraction took 12578.95 ms. Allocated memory is still 102.8 MB. Free memory was 49.1 MB in the beginning and 60.8 MB in the end (delta: -11.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 15:59:18,200 INFO L168 Benchmark]: Witness Printer took 44.63 ms. Allocated memory is still 102.8 MB. Free memory was 60.8 MB in the beginning and 56.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 15:59:18,202 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 102.8 MB. Free memory is still 80.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 172.04 ms. Allocated memory is still 102.8 MB. Free memory was 72.3 MB in the beginning and 62.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.06 ms. Allocated memory is still 102.8 MB. Free memory was 62.0 MB in the beginning and 60.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.59 ms. Allocated memory is still 102.8 MB. Free memory was 60.3 MB in the beginning and 59.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 8447.55 ms. Allocated memory is still 102.8 MB. Free memory was 58.9 MB in the beginning and 49.5 MB in the end (delta: 9.4 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12578.95 ms. Allocated memory is still 102.8 MB. Free memory was 49.1 MB in the beginning and 60.8 MB in the end (delta: -11.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 44.63 ms. Allocated memory is still 102.8 MB. Free memory was 60.8 MB in the beginning and 56.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 127 SDtfs, 166 SDslu, 157 SDs, 0 SdLazy, 167 SolverSat, 79 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=4, 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, 6 MinimizatonAttempts, 85 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 8 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 6538 SizeOfPredicates, 43 NumberOfNonLiveVariables, 490 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 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...