./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound5.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_a44e9518-477d-4eb2-b86d-360fdcb9ca12/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a44e9518-477d-4eb2-b86d-360fdcb9ca12/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a44e9518-477d-4eb2-b86d-360fdcb9ca12/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a44e9518-477d-4eb2-b86d-360fdcb9ca12/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a44e9518-477d-4eb2-b86d-360fdcb9ca12/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a44e9518-477d-4eb2-b86d-360fdcb9ca12/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 fb55ed2f948008ec64bd81ac708349586c420617 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 07:42:55,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 07:42:55,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 07:42:55,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 07:42:55,142 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 07:42:55,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 07:42:55,154 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 07:42:55,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 07:42:55,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 07:42:55,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 07:42:55,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 07:42:55,162 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 07:42:55,162 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 07:42:55,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 07:42:55,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 07:42:55,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 07:42:55,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 07:42:55,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 07:42:55,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 07:42:55,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 07:42:55,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 07:42:55,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 07:42:55,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 07:42:55,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 07:42:55,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 07:42:55,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 07:42:55,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 07:42:55,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 07:42:55,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 07:42:55,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 07:42:55,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 07:42:55,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 07:42:55,184 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 07:42:55,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 07:42:55,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 07:42:55,186 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 07:42:55,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 07:42:55,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 07:42:55,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 07:42:55,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 07:42:55,187 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 07:42:55,188 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a44e9518-477d-4eb2-b86d-360fdcb9ca12/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 07:42:55,204 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 07:42:55,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 07:42:55,205 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 07:42:55,205 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 07:42:55,205 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 07:42:55,205 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 07:42:55,205 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 07:42:55,205 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 07:42:55,206 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 07:42:55,206 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 07:42:55,206 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 07:42:55,206 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 07:42:55,206 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 07:42:55,206 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 07:42:55,206 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 07:42:55,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 07:42:55,207 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 07:42:55,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 07:42:55,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 07:42:55,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 07:42:55,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 07:42:55,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 07:42:55,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 07:42:55,208 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 07:42:55,208 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 07:42:55,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 07:42:55,208 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 07:42:55,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 07:42:55,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 07:42:55,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 07:42:55,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:42:55,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 07:42:55,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 07:42:55,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 07:42:55,209 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 07:42:55,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 07:42:55,209 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 07:42:55,209 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 07:42:55,209 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 07:42:55,209 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_a44e9518-477d-4eb2-b86d-360fdcb9ca12/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a44e9518-477d-4eb2-b86d-360fdcb9ca12/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb55ed2f948008ec64bd81ac708349586c420617 [2020-12-09 07:42:55,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 07:42:55,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 07:42:55,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 07:42:55,400 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 07:42:55,401 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 07:42:55,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a44e9518-477d-4eb2-b86d-360fdcb9ca12/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound5.c [2020-12-09 07:42:55,446 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a44e9518-477d-4eb2-b86d-360fdcb9ca12/bin/utaipan/data/631f21ea5/96c22a0866e7431aa63246a222c3d008/FLAGecfbdd6bd [2020-12-09 07:42:55,795 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 07:42:55,796 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a44e9518-477d-4eb2-b86d-360fdcb9ca12/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound5.c [2020-12-09 07:42:55,801 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a44e9518-477d-4eb2-b86d-360fdcb9ca12/bin/utaipan/data/631f21ea5/96c22a0866e7431aa63246a222c3d008/FLAGecfbdd6bd [2020-12-09 07:42:55,810 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a44e9518-477d-4eb2-b86d-360fdcb9ca12/bin/utaipan/data/631f21ea5/96c22a0866e7431aa63246a222c3d008 [2020-12-09 07:42:55,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 07:42:55,814 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 07:42:55,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 07:42:55,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 07:42:55,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 07:42:55,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:42:55" (1/1) ... [2020-12-09 07:42:55,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5271ffce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:42:55, skipping insertion in model container [2020-12-09 07:42:55,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:42:55" (1/1) ... [2020-12-09 07:42:55,824 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 07:42:55,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 07:42:55,952 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_a44e9518-477d-4eb2-b86d-360fdcb9ca12/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound5.c[490,503] [2020-12-09 07:42:55,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:42:55,975 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 07:42:55,983 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_a44e9518-477d-4eb2-b86d-360fdcb9ca12/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound5.c[490,503] [2020-12-09 07:42:55,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:42:56,001 INFO L208 MainTranslator]: Completed translation [2020-12-09 07:42:56,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:42:56 WrapperNode [2020-12-09 07:42:56,001 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 07:42:56,002 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 07:42:56,002 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 07:42:56,002 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 07:42:56,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:42:56" (1/1) ... [2020-12-09 07:42:56,014 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:42:56" (1/1) ... [2020-12-09 07:42:56,031 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 07:42:56,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 07:42:56,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 07:42:56,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 07:42:56,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:42:56" (1/1) ... [2020-12-09 07:42:56,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:42:56" (1/1) ... [2020-12-09 07:42:56,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:42:56" (1/1) ... [2020-12-09 07:42:56,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:42:56" (1/1) ... [2020-12-09 07:42:56,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:42:56" (1/1) ... [2020-12-09 07:42:56,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:42:56" (1/1) ... [2020-12-09 07:42:56,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:42:56" (1/1) ... [2020-12-09 07:42:56,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 07:42:56,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 07:42:56,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 07:42:56,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 07:42:56,052 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:42:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a44e9518-477d-4eb2-b86d-360fdcb9ca12/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 07:42:56,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 07:42:56,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 07:42:56,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 07:42:56,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 07:43:04,527 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 07:43:04,527 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2020-12-09 07:43:04,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:43:04 BoogieIcfgContainer [2020-12-09 07:43:04,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 07:43:04,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 07:43:04,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 07:43:04,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 07:43:04,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:42:55" (1/3) ... [2020-12-09 07:43:04,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb7fb57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:43:04, skipping insertion in model container [2020-12-09 07:43:04,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:42:56" (2/3) ... [2020-12-09 07:43:04,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb7fb57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:43:04, skipping insertion in model container [2020-12-09 07:43:04,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:43:04" (3/3) ... [2020-12-09 07:43:04,534 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound5.c [2020-12-09 07:43:04,543 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 07:43:04,545 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 07:43:04,552 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 07:43:04,567 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 07:43:04,567 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 07:43:04,567 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 07:43:04,567 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 07:43:04,567 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 07:43:04,568 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 07:43:04,568 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 07:43:04,568 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 07:43:04,576 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-12-09 07:43:04,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 07:43:04,579 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:43:04,580 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 07:43:04,580 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 07:43:04,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:43:04,584 INFO L82 PathProgramCache]: Analyzing trace with hash 189711168, now seen corresponding path program 1 times [2020-12-09 07:43:04,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:43:04,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871768885] [2020-12-09 07:43:04,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:43:04,640 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:43:04,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [877902938] [2020-12-09 07:43:04,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a44e9518-477d-4eb2-b86d-360fdcb9ca12/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 07:43:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:43:04,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 07:43:04,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:43:04,704 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 07:43:04,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:43:04,710 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 07:43:04,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871768885] [2020-12-09 07:43:04,711 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:43:04,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877902938] [2020-12-09 07:43:04,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:43:04,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-09 07:43:04,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274860017] [2020-12-09 07:43:04,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 07:43:04,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:43:04,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 07:43:04,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 07:43:04,728 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2020-12-09 07:43:04,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:43:04,739 INFO L93 Difference]: Finished difference Result 61 states and 79 transitions. [2020-12-09 07:43:04,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 07:43:04,740 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-09 07:43:04,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:43:04,745 INFO L225 Difference]: With dead ends: 61 [2020-12-09 07:43:04,745 INFO L226 Difference]: Without dead ends: 29 [2020-12-09 07:43:04,747 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 07:43:04,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-09 07:43:04,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-09 07:43:04,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-09 07:43:04,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-12-09 07:43:04,774 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 5 [2020-12-09 07:43:04,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:43:04,774 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-12-09 07:43:04,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 07:43:04,774 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-12-09 07:43:04,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 07:43:04,774 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:43:04,774 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 07:43:04,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-12-09 07:43:04,977 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 07:43:04,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:43:04,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1480645745, now seen corresponding path program 1 times [2020-12-09 07:43:04,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:43:04,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584226240] [2020-12-09 07:43:04,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:43:04,995 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:43:04,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1266509911] [2020-12-09 07:43:04,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a44e9518-477d-4eb2-b86d-360fdcb9ca12/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 07:43:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:43:05,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 07:43:05,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:43:05,135 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 07:43:05,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:43:05,141 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 07:43:05,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584226240] [2020-12-09 07:43:05,142 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:43:05,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266509911] [2020-12-09 07:43:05,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:43:05,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-09 07:43:05,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606412202] [2020-12-09 07:43:05,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:43:05,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:43:05,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:43:05,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:43:05,145 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 3 states. [2020-12-09 07:43:05,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:43:05,174 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2020-12-09 07:43:05,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:43:05,175 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-09 07:43:05,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:43:05,176 INFO L225 Difference]: With dead ends: 57 [2020-12-09 07:43:05,176 INFO L226 Difference]: Without dead ends: 49 [2020-12-09 07:43:05,176 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 07:43:05,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-09 07:43:05,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 31. [2020-12-09 07:43:05,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-09 07:43:05,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-12-09 07:43:05,180 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 6 [2020-12-09 07:43:05,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:43:05,181 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-12-09 07:43:05,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:43:05,181 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-12-09 07:43:05,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 07:43:05,181 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:43:05,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 07:43:05,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:43:05,383 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 07:43:05,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:43:05,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1480649719, now seen corresponding path program 1 times [2020-12-09 07:43:05,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:43:05,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424152207] [2020-12-09 07:43:05,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:43:05,398 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:43:05,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1403536136] [2020-12-09 07:43:05,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a44e9518-477d-4eb2-b86d-360fdcb9ca12/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 07:43:05,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:43:05,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-09 07:43:05,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:43:05,531 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 07:43:05,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:43:05,557 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 07:43:05,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424152207] [2020-12-09 07:43:05,558 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:43:05,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403536136] [2020-12-09 07:43:05,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:43:05,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-12-09 07:43:05,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775967270] [2020-12-09 07:43:05,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 07:43:05,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:43:05,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 07:43:05,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-09 07:43:05,560 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 7 states. [2020-12-09 07:43:09,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:43:09,747 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2020-12-09 07:43:09,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-09 07:43:09,747 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2020-12-09 07:43:09,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:43:09,749 INFO L225 Difference]: With dead ends: 99 [2020-12-09 07:43:09,749 INFO L226 Difference]: Without dead ends: 97 [2020-12-09 07:43:09,750 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 07:43:09,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-12-09 07:43:09,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 42. [2020-12-09 07:43:09,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-09 07:43:09,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2020-12-09 07:43:09,756 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 6 [2020-12-09 07:43:09,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:43:09,756 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2020-12-09 07:43:09,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 07:43:09,756 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2020-12-09 07:43:09,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 07:43:09,757 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:43:09,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:43:09,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:43:09,958 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 07:43:09,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:43:09,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1270362266, now seen corresponding path program 1 times [2020-12-09 07:43:09,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:43:09,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972733628] [2020-12-09 07:43:09,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:43:09,972 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:43:09,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [171667423] [2020-12-09 07:43:09,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a44e9518-477d-4eb2-b86d-360fdcb9ca12/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 07:43:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:43:10,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 07:43:10,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:43:10,092 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 07:43:10,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:43:10,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:43:10,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972733628] [2020-12-09 07:43:10,110 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:43:10,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171667423] [2020-12-09 07:43:10,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:43:10,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 07:43:10,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745017283] [2020-12-09 07:43:10,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 07:43:10,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:43:10,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 07:43:10,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 07:43:10,111 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 6 states. [2020-12-09 07:43:10,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:43:10,182 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2020-12-09 07:43:10,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 07:43:10,182 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-12-09 07:43:10,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:43:10,183 INFO L225 Difference]: With dead ends: 62 [2020-12-09 07:43:10,183 INFO L226 Difference]: Without dead ends: 60 [2020-12-09 07:43:10,183 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 07:43:10,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-09 07:43:10,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2020-12-09 07:43:10,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-09 07:43:10,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2020-12-09 07:43:10,190 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 8 [2020-12-09 07:43:10,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:43:10,190 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2020-12-09 07:43:10,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 07:43:10,190 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2020-12-09 07:43:10,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 07:43:10,190 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:43:10,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:43:10,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:43:10,392 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 07:43:10,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:43:10,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1047583197, now seen corresponding path program 1 times [2020-12-09 07:43:10,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:43:10,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855720433] [2020-12-09 07:43:10,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:43:10,403 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:43:10,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2107174476] [2020-12-09 07:43:10,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a44e9518-477d-4eb2-b86d-360fdcb9ca12/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 07:43:10,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:43:10,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 07:43:10,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:43:10,494 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 07:43:10,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:43:10,517 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 07:43:10,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855720433] [2020-12-09 07:43:10,518 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:43:10,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107174476] [2020-12-09 07:43:10,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:43:10,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 07:43:10,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225033421] [2020-12-09 07:43:10,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 07:43:10,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:43:10,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 07:43:10,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 07:43:10,520 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 6 states. [2020-12-09 07:43:10,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:43:10,602 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2020-12-09 07:43:10,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 07:43:10,603 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-09 07:43:10,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:43:10,603 INFO L225 Difference]: With dead ends: 60 [2020-12-09 07:43:10,603 INFO L226 Difference]: Without dead ends: 58 [2020-12-09 07:43:10,603 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 07:43:10,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-12-09 07:43:10,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2020-12-09 07:43:10,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-09 07:43:10,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2020-12-09 07:43:10,610 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 10 [2020-12-09 07:43:10,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:43:10,610 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2020-12-09 07:43:10,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 07:43:10,610 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2020-12-09 07:43:10,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 07:43:10,610 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:43:10,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:43:10,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:43:10,812 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 07:43:10,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:43:10,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1705263040, now seen corresponding path program 1 times [2020-12-09 07:43:10,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:43:10,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067723839] [2020-12-09 07:43:10,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:43:10,824 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:43:10,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [991399774] [2020-12-09 07:43:10,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a44e9518-477d-4eb2-b86d-360fdcb9ca12/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 07:43:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:43:10,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-09 07:43:10,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:43:12,922 WARN L197 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 15 [2020-12-09 07:43:16,993 WARN L197 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 27 DAG size of output: 17 [2020-12-09 07:43:17,005 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 07:43:17,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:43:17,032 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 2, 2, 1] term [2020-12-09 07:43:17,032 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 07:43:17,070 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 07:43:17,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067723839] [2020-12-09 07:43:17,071 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:43:17,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991399774] [2020-12-09 07:43:17,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:43:17,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-12-09 07:43:17,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997696012] [2020-12-09 07:43:17,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 07:43:17,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:43:17,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 07:43:17,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-09 07:43:17,072 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 8 states. [2020-12-09 07:43:17,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:43:17,074 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2020-12-09 07:43:17,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 07:43:17,074 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-12-09 07:43:17,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:43:17,074 INFO L225 Difference]: With dead ends: 53 [2020-12-09 07:43:17,074 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 07:43:17,074 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 07:43:17,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 07:43:17,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 07:43:17,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 07:43:17,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 07:43:17,075 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-12-09 07:43:17,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:43:17,075 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 07:43:17,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 07:43:17,075 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 07:43:17,075 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 07:43:17,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:43:17,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 07:43:17,309 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 07:43:17,309 INFO L262 CegarLoopResult]: For program point L11(lines 11 14) no Hoare annotation was computed. [2020-12-09 07:43:17,310 INFO L258 CegarLoopResult]: At program point L11-2(lines 10 16) the Hoare annotation is: false [2020-12-09 07:43:17,310 INFO L262 CegarLoopResult]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2020-12-09 07:43:17,310 INFO L258 CegarLoopResult]: At program point L11-5(lines 10 16) the Hoare annotation is: false [2020-12-09 07:43:17,310 INFO L262 CegarLoopResult]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2020-12-09 07:43:17,310 INFO L258 CegarLoopResult]: At program point L11-8(lines 10 16) the Hoare annotation is: false [2020-12-09 07:43:17,310 INFO L262 CegarLoopResult]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2020-12-09 07:43:17,310 INFO L258 CegarLoopResult]: At program point L11-11(lines 52 53) the Hoare annotation is: false [2020-12-09 07:43:17,310 INFO L262 CegarLoopResult]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2020-12-09 07:43:17,310 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 07:43:17,310 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 07:43:17,310 INFO L258 CegarLoopResult]: At program point L11-14(lines 10 16) the Hoare annotation is: false [2020-12-09 07:43:17,310 INFO L262 CegarLoopResult]: For program point L11-15(lines 11 14) no Hoare annotation was computed. [2020-12-09 07:43:17,310 INFO L265 CegarLoopResult]: At program point L11-17(lines 10 16) the Hoare annotation is: true [2020-12-09 07:43:17,310 INFO L262 CegarLoopResult]: For program point L12(lines 12 13) no Hoare annotation was computed. [2020-12-09 07:43:17,310 INFO L262 CegarLoopResult]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2020-12-09 07:43:17,310 INFO L262 CegarLoopResult]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2020-12-09 07:43:17,310 INFO L262 CegarLoopResult]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2020-12-09 07:43:17,310 INFO L262 CegarLoopResult]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2020-12-09 07:43:17,311 INFO L262 CegarLoopResult]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2020-12-09 07:43:17,311 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 07:43:17,311 INFO L258 CegarLoopResult]: At program point L47-2(lines 47 56) the Hoare annotation is: false [2020-12-09 07:43:17,311 INFO L262 CegarLoopResult]: For program point L47-3(lines 47 56) no Hoare annotation was computed. [2020-12-09 07:43:17,311 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 07:43:17,311 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 07:43:17,311 INFO L258 CegarLoopResult]: At program point L41-1(lines 7 68) the Hoare annotation is: false [2020-12-09 07:43:17,311 INFO L262 CegarLoopResult]: For program point L41-2(lines 41 68) no Hoare annotation was computed. [2020-12-09 07:43:17,311 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 07:43:17,311 INFO L262 CegarLoopResult]: For program point L42(lines 42 43) no Hoare annotation was computed. [2020-12-09 07:43:17,311 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 07:43:17,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:43:17 BoogieIcfgContainer [2020-12-09 07:43:17,317 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 07:43:17,317 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 07:43:17,317 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 07:43:17,318 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 07:43:17,318 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:43:04" (3/4) ... [2020-12-09 07:43:17,320 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 07:43:17,327 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2020-12-09 07:43:17,327 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-09 07:43:17,327 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 07:43:17,328 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 07:43:17,362 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a44e9518-477d-4eb2-b86d-360fdcb9ca12/bin/utaipan/witness.graphml [2020-12-09 07:43:17,362 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 07:43:17,363 INFO L168 Benchmark]: Toolchain (without parser) took 21548.79 ms. Allocated memory was 83.9 MB in the beginning and 115.3 MB in the end (delta: 31.5 MB). Free memory was 53.9 MB in the beginning and 40.8 MB in the end (delta: 13.1 MB). Peak memory consumption was 42.5 MB. Max. memory is 16.1 GB. [2020-12-09 07:43:17,363 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 83.9 MB. Free memory is still 42.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:43:17,363 INFO L168 Benchmark]: CACSL2BoogieTranslator took 186.98 ms. Allocated memory was 83.9 MB in the beginning and 115.3 MB in the end (delta: 31.5 MB). Free memory was 53.7 MB in the beginning and 92.3 MB in the end (delta: -38.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 07:43:17,363 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.66 ms. Allocated memory is still 115.3 MB. Free memory was 92.3 MB in the beginning and 91.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:43:17,364 INFO L168 Benchmark]: Boogie Preprocessor took 18.95 ms. Allocated memory is still 115.3 MB. Free memory was 91.0 MB in the beginning and 89.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:43:17,364 INFO L168 Benchmark]: RCFGBuilder took 8477.77 ms. Allocated memory is still 115.3 MB. Free memory was 89.6 MB in the beginning and 55.3 MB in the end (delta: 34.3 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. [2020-12-09 07:43:17,364 INFO L168 Benchmark]: TraceAbstraction took 12787.44 ms. Allocated memory is still 115.3 MB. Free memory was 54.6 MB in the beginning and 45.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. [2020-12-09 07:43:17,364 INFO L168 Benchmark]: Witness Printer took 44.61 ms. Allocated memory is still 115.3 MB. Free memory was 45.0 MB in the beginning and 40.8 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 07:43:17,366 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 83.9 MB. Free memory is still 42.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 186.98 ms. Allocated memory was 83.9 MB in the beginning and 115.3 MB in the end (delta: 31.5 MB). Free memory was 53.7 MB in the beginning and 92.3 MB in the end (delta: -38.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.66 ms. Allocated memory is still 115.3 MB. Free memory was 92.3 MB in the beginning and 91.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.95 ms. Allocated memory is still 115.3 MB. Free memory was 91.0 MB in the beginning and 89.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 8477.77 ms. Allocated memory is still 115.3 MB. Free memory was 89.6 MB in the beginning and 55.3 MB in the end (delta: 34.3 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12787.44 ms. Allocated memory is still 115.3 MB. Free memory was 54.6 MB in the beginning and 45.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. * Witness Printer took 44.61 ms. Allocated memory is still 115.3 MB. Free memory was 45.0 MB in the beginning and 40.8 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: 12.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 4.4s, 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, 6.3s 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, 0.1s SatisfiabilityAnalysisTime, 6.4s 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...