./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound2.i --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_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/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 02f127c20511fa02dafb6b2fc07e9971c3cba295 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/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 02f127c20511fa02dafb6b2fc07e9971c3cba295 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 19:36:49,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 19:36:49,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 19:36:49,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 19:36:49,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 19:36:49,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 19:36:49,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 19:36:49,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 19:36:49,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 19:36:49,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 19:36:49,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 19:36:49,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 19:36:49,546 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 19:36:49,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 19:36:49,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 19:36:49,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 19:36:49,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 19:36:49,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 19:36:49,552 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 19:36:49,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 19:36:49,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 19:36:49,556 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 19:36:49,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 19:36:49,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 19:36:49,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 19:36:49,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 19:36:49,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 19:36:49,561 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 19:36:49,562 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 19:36:49,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 19:36:49,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 19:36:49,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 19:36:49,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 19:36:49,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 19:36:49,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 19:36:49,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 19:36:49,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 19:36:49,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 19:36:49,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 19:36:49,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 19:36:49,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 19:36:49,568 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 19:36:49,584 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 19:36:49,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 19:36:49,585 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 19:36:49,585 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 19:36:49,585 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 19:36:49,585 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 19:36:49,586 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 19:36:49,586 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 19:36:49,586 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 19:36:49,586 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 19:36:49,586 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 19:36:49,586 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 19:36:49,586 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 19:36:49,586 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 19:36:49,587 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 19:36:49,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 19:36:49,587 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 19:36:49,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 19:36:49,587 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 19:36:49,588 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 19:36:49,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 19:36:49,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 19:36:49,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 19:36:49,588 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 19:36:49,588 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 19:36:49,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 19:36:49,588 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 19:36:49,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 19:36:49,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 19:36:49,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 19:36:49,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:36:49,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 19:36:49,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 19:36:49,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 19:36:49,589 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 19:36:49,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 19:36:49,590 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 19:36:49,590 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 19:36:49,590 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 19:36:49,590 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_c8628aa7-fc6b-42f2-9075-6d4f2254d605/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02f127c20511fa02dafb6b2fc07e9971c3cba295 [2020-12-09 19:36:49,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 19:36:49,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 19:36:49,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 19:36:49,776 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 19:36:49,776 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 19:36:49,777 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound2.i [2020-12-09 19:36:49,816 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan/data/42a211d54/7b792736f8874d48ab6a284bdd312de4/FLAGe1f4ff020 [2020-12-09 19:36:50,202 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 19:36:50,202 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound2.i [2020-12-09 19:36:50,207 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan/data/42a211d54/7b792736f8874d48ab6a284bdd312de4/FLAGe1f4ff020 [2020-12-09 19:36:50,217 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan/data/42a211d54/7b792736f8874d48ab6a284bdd312de4 [2020-12-09 19:36:50,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 19:36:50,219 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 19:36:50,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 19:36:50,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 19:36:50,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 19:36:50,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:36:50" (1/1) ... [2020-12-09 19:36:50,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63514aa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:36:50, skipping insertion in model container [2020-12-09 19:36:50,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:36:50" (1/1) ... [2020-12-09 19:36:50,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 19:36:50,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 19:36:50,335 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_c8628aa7-fc6b-42f2-9075-6d4f2254d605/sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound2.i[951,964] [2020-12-09 19:36:50,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:36:50,352 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 19:36:50,364 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_c8628aa7-fc6b-42f2-9075-6d4f2254d605/sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound2.i[951,964] [2020-12-09 19:36:50,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:36:50,383 INFO L208 MainTranslator]: Completed translation [2020-12-09 19:36:50,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:36:50 WrapperNode [2020-12-09 19:36:50,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 19:36:50,385 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 19:36:50,385 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 19:36:50,385 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 19:36:50,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:36:50" (1/1) ... [2020-12-09 19:36:50,398 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:36:50" (1/1) ... [2020-12-09 19:36:50,416 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 19:36:50,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 19:36:50,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 19:36:50,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 19:36:50,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:36:50" (1/1) ... [2020-12-09 19:36:50,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:36:50" (1/1) ... [2020-12-09 19:36:50,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:36:50" (1/1) ... [2020-12-09 19:36:50,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:36:50" (1/1) ... [2020-12-09 19:36:50,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:36:50" (1/1) ... [2020-12-09 19:36:50,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:36:50" (1/1) ... [2020-12-09 19:36:50,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:36:50" (1/1) ... [2020-12-09 19:36:50,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 19:36:50,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 19:36:50,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 19:36:50,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 19:36:50,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:36:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/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 19:36:50,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 19:36:50,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 19:36:50,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 19:36:50,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 19:36:50,711 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 19:36:50,711 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-09 19:36:50,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:36:50 BoogieIcfgContainer [2020-12-09 19:36:50,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 19:36:50,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 19:36:50,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 19:36:50,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 19:36:50,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:36:50" (1/3) ... [2020-12-09 19:36:50,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b58500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:36:50, skipping insertion in model container [2020-12-09 19:36:50,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:36:50" (2/3) ... [2020-12-09 19:36:50,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b58500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:36:50, skipping insertion in model container [2020-12-09 19:36:50,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:36:50" (3/3) ... [2020-12-09 19:36:50,721 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_valuebound2.i [2020-12-09 19:36:50,734 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 19:36:50,736 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-09 19:36:50,743 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-09 19:36:50,763 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 19:36:50,763 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 19:36:50,763 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 19:36:50,763 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 19:36:50,763 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 19:36:50,763 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 19:36:50,764 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 19:36:50,764 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 19:36:50,774 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-12-09 19:36:50,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 19:36:50,777 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:36:50,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 19:36:50,778 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:36:50,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:36:50,782 INFO L82 PathProgramCache]: Analyzing trace with hash 104004450, now seen corresponding path program 1 times [2020-12-09 19:36:50,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:36:50,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267714795] [2020-12-09 19:36:50,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:36:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:36:50,904 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 19:36:50,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267714795] [2020-12-09 19:36:50,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:36:50,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:36:50,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599127702] [2020-12-09 19:36:50,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 19:36:50,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:36:50,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 19:36:50,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 19:36:50,925 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-12-09 19:36:50,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:36:50,938 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2020-12-09 19:36:50,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 19:36:50,939 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-09 19:36:50,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:36:50,946 INFO L225 Difference]: With dead ends: 25 [2020-12-09 19:36:50,946 INFO L226 Difference]: Without dead ends: 12 [2020-12-09 19:36:50,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 19:36:50,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-09 19:36:50,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-12-09 19:36:50,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-09 19:36:50,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2020-12-09 19:36:50,972 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 5 [2020-12-09 19:36:50,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:36:50,972 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-12-09 19:36:50,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 19:36:50,973 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-12-09 19:36:50,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 19:36:50,973 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:36:50,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 19:36:50,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 19:36:50,974 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:36:50,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:36:50,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1128477837, now seen corresponding path program 1 times [2020-12-09 19:36:50,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:36:50,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863870473] [2020-12-09 19:36:50,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:36:50,993 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 19:36:50,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1569376383] [2020-12-09 19:36:50,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/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 19:36:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:36:51,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-09 19:36:51,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:36:51,144 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 19:36:51,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:36:51,208 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 19:36:51,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863870473] [2020-12-09 19:36:51,208 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:36:51,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569376383] [2020-12-09 19:36:51,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:36:51,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-12-09 19:36:51,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659392756] [2020-12-09 19:36:51,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 19:36:51,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:36:51,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 19:36:51,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-09 19:36:51,211 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 8 states. [2020-12-09 19:36:51,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:36:51,341 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-12-09 19:36:51,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 19:36:51,341 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 6 [2020-12-09 19:36:51,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:36:51,342 INFO L225 Difference]: With dead ends: 33 [2020-12-09 19:36:51,342 INFO L226 Difference]: Without dead ends: 25 [2020-12-09 19:36:51,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-09 19:36:51,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-09 19:36:51,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2020-12-09 19:36:51,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-09 19:36:51,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-12-09 19:36:51,346 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 6 [2020-12-09 19:36:51,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:36:51,346 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-12-09 19:36:51,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 19:36:51,347 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-12-09 19:36:51,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 19:36:51,347 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:36:51,347 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2020-12-09 19:36:51,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-09 19:36:51,549 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:36:51,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:36:51,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1710175895, now seen corresponding path program 1 times [2020-12-09 19:36:51,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:36:51,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112558211] [2020-12-09 19:36:51,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:36:51,560 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 19:36:51,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [482401245] [2020-12-09 19:36:51,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/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 19:36:51,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:36:51,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-09 19:36:51,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:36:51,613 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-09 19:36:51,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:36:53,662 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (* c_ULTIMATE.start_main_~r~0 (- 1)))) (let ((.cse6 (div (+ .cse3 (- 1)) (- 4294967296))) (.cse4 (+ (div (+ c_ULTIMATE.start_main_~r~0 (- 4294967296)) 4294967296) 1)) (.cse0 (= c_ULTIMATE.start_main_~q~0 0))) (let ((.cse1 (not .cse0)) (.cse2 (mod c_ULTIMATE.start_main_~A~0 4294967296)) (.cse5 (<= .cse6 .cse4))) (and (or (forall ((aux_div_ULTIMATE.start_main_~b~0_99 Int) (aux_mod_ULTIMATE.start_main_~b~0_99 Int)) (or (not (= (mod (+ (* aux_div_ULTIMATE.start_main_~b~0_99 4294967296) (* c_ULTIMATE.start_main_~r~0 (- 1)) aux_mod_ULTIMATE.start_main_~b~0_99) c_ULTIMATE.start_main_~q~0) 0)) (< aux_mod_ULTIMATE.start_main_~b~0_99 0) (<= 4294967296 aux_mod_ULTIMATE.start_main_~b~0_99) (= (mod c_ULTIMATE.start_main_~A~0 4294967296) aux_mod_ULTIMATE.start_main_~b~0_99))) .cse0) (or .cse1 (<= (div (+ .cse2 .cse3) (- 4294967296)) .cse4) .cse5) (or .cse1 (<= .cse6 (div (+ .cse2 .cse3 (- 1)) (- 4294967296))) .cse5))))) is different from false [2020-12-09 19:36:53,756 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-09 19:36:53,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112558211] [2020-12-09 19:36:53,756 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:36:53,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482401245] [2020-12-09 19:36:53,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:36:53,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 19:36:53,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706619566] [2020-12-09 19:36:53,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 19:36:53,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:36:53,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 19:36:53,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2020-12-09 19:36:53,758 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 6 states. [2020-12-09 19:36:53,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:36:53,803 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2020-12-09 19:36:53,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 19:36:53,804 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-09 19:36:53,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:36:53,804 INFO L225 Difference]: With dead ends: 35 [2020-12-09 19:36:53,804 INFO L226 Difference]: Without dead ends: 29 [2020-12-09 19:36:53,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=15, Invalid=18, Unknown=1, NotChecked=8, Total=42 [2020-12-09 19:36:53,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-09 19:36:53,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2020-12-09 19:36:53,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-09 19:36:53,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-12-09 19:36:53,808 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 10 [2020-12-09 19:36:53,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:36:53,808 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-12-09 19:36:53,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 19:36:53,808 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-12-09 19:36:53,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 19:36:53,809 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:36:53,809 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:36:54,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:36:54,011 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:36:54,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:36:54,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1523002160, now seen corresponding path program 1 times [2020-12-09 19:36:54,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:36:54,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602575564] [2020-12-09 19:36:54,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:36:54,047 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 19:36:54,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1928880045] [2020-12-09 19:36:54,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/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 19:36:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:36:54,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-09 19:36:54,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:36:54,166 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:36:54,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:36:54,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602575564] [2020-12-09 19:36:54,197 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 19:36:54,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928880045] [2020-12-09 19:36:54,197 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-09 19:36:54,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1268135366] [2020-12-09 19:36:54,212 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2020-12-09 19:36:54,212 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 19:36:54,216 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 19:36:54,220 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 19:36:54,220 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 19:36:54,280 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 19:36:54,792 FATAL L? ?]: Ignoring exception! java.lang.NullPointerException at java.base/java.util.Arrays.stream(Arrays.java:5614) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.AbstractGeneralizedAffineTerm.div(AbstractGeneralizedAffineTerm.java:395) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.constructRhsIntegerQuotient(SolveForSubjectUtils.java:456) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.ExplicitLhsPolynomialRelation.divideByIntegerCoefficient(ExplicitLhsPolynomialRelation.java:224) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.solveForSubjectWithoutTreatableDivMod(SolveForSubjectUtils.java:110) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.solveForSubject(SolveForSubjectUtils.java:82) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.PolynomialRelation.solveForSubject(PolynomialRelation.java:451) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.tryToHandleDivModSubterm(SolveForSubjectUtils.java:212) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.findTreatableDivModSubterm(SolveForSubjectUtils.java:585) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.findTreatableDivModSubterm(SolveForSubjectUtils.java:573) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.solveForSubject(SolveForSubjectUtils.java:76) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.PolynomialRelation.solveForSubject(PolynomialRelation.java:451) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer$DerHelperMcsbr.solveForSubject(DualJunctionDer.java:401) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer$DerHelperMcsbr.solveForSubject(DualJunctionDer.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer$IDerHelper.findBestReplacementSbr(DualJunctionDer.java:305) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer$IDerHelper.tryToEliminateSbr(DualJunctionDer.java:319) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer.tryToEliminateOne(DualJunctionDer.java:223) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer.tryExhaustivelyToEliminate(DualJunctionDer.java:190) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer.tryToEliminateOne(DualJunctionDer.java:174) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer.tryExhaustivelyToEliminate(DualJunctionDer.java:141) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer.tryToEliminate(DualJunctionDer.java:119) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:776) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:739) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:656) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.applyEliminationToAtom(QuantifierPusher.java:254) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.convert(QuantifierPusher.java:204) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.access$0(TermTransformer.java:127) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.doit(QuantifierPusher.java:523) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:378) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.convert(QuantifierPusher.java:217) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.access$0(TermTransformer.java:127) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.eliminate(QuantifierPusher.java:151) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.eliminate(QuantifierPusher.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elimPushPull(PartialQuantifierElimination.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elimPushPull(PartialQuantifierElimination.java:202) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.quantifier(PartialQuantifierElimination.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:279) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1133) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-12-09 19:36:54,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:36:54,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-09 19:36:54,794 ERROR L205 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2020-12-09 19:36:54,794 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 19:36:54,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:36:55,002 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-12-09 19:36:55,003 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-12-09 19:36:55,003 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-12-09 19:36:55,003 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-12-09 19:36:55,014 WARN L254 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-09 19:36:55,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:36:55 BoogieIcfgContainer [2020-12-09 19:36:55,015 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 19:36:55,016 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 19:36:55,016 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 19:36:55,017 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 19:36:55,017 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:36:50" (3/4) ... [2020-12-09 19:36:55,022 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 19:36:55,023 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 19:36:55,026 INFO L168 Benchmark]: Toolchain (without parser) took 4803.80 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 69.1 MB in the beginning and 82.9 MB in the end (delta: -13.8 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2020-12-09 19:36:55,027 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 69.2 MB. Free memory is still 44.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:36:55,029 INFO L168 Benchmark]: CACSL2BoogieTranslator took 163.97 ms. Allocated memory is still 90.2 MB. Free memory was 68.8 MB in the beginning and 59.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 19:36:55,031 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.00 ms. Allocated memory is still 90.2 MB. Free memory was 59.0 MB in the beginning and 57.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:36:55,032 INFO L168 Benchmark]: Boogie Preprocessor took 21.23 ms. Allocated memory is still 90.2 MB. Free memory was 57.7 MB in the beginning and 56.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:36:55,034 INFO L168 Benchmark]: RCFGBuilder took 274.55 ms. Allocated memory is still 90.2 MB. Free memory was 56.5 MB in the beginning and 57.9 MB in the end (delta: -1.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 19:36:55,037 INFO L168 Benchmark]: TraceAbstraction took 4300.74 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 57.4 MB in the beginning and 82.9 MB in the end (delta: -25.5 MB). Peak memory consumption was 46.3 MB. Max. memory is 16.1 GB. [2020-12-09 19:36:55,038 INFO L168 Benchmark]: Witness Printer took 6.74 ms. Allocated memory is still 109.1 MB. Free memory is still 82.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:36:55,048 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 69.2 MB. Free memory is still 44.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 163.97 ms. Allocated memory is still 90.2 MB. Free memory was 68.8 MB in the beginning and 59.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.00 ms. Allocated memory is still 90.2 MB. Free memory was 59.0 MB in the beginning and 57.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.23 ms. Allocated memory is still 90.2 MB. Free memory was 57.7 MB in the beginning and 56.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 274.55 ms. Allocated memory is still 90.2 MB. Free memory was 56.5 MB in the beginning and 57.9 MB in the end (delta: -1.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4300.74 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 57.4 MB in the beginning and 82.9 MB in the end (delta: -25.5 MB). Peak memory consumption was 46.3 MB. Max. memory is 16.1 GB. * Witness Printer took 6.74 ms. Allocated memory is still 109.1 MB. Free memory is still 82.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 21]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L26] unsigned A, B; [L27] unsigned q, r, b; [L28] A = __VERIFIER_nondet_uint() [L16] COND TRUE !cond [L30] B = 1 [L31] q = 0 [L32] r = A [L33] b = B [L34] COND TRUE 1 [L35] COND FALSE !(!(r >= b)) [L36] b = 2 * b [L34] COND TRUE 1 [L35] COND TRUE !(r >= b) [L38] COND TRUE 1 [L19] COND FALSE !(!(cond)) [L40] COND FALSE !(!(b != B)) [L41] q = 2 * q [L42] b = b / 2 [L43] COND FALSE !(r >= b) [L38] COND TRUE 1 [L19] COND TRUE !(cond) [L21] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 4.2s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 39 SDslu, 31 SDs, 0 SdLazy, 48 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=2, 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, 3 MinimizatonAttempts, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 7 QuantifiedInterpolants, 8056 SizeOfPredicates, 16 NumberOfNonLiveVariables, 102 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 12/12 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 19:36:56,729 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 19:36:56,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 19:36:56,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 19:36:56,759 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 19:36:56,760 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 19:36:56,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 19:36:56,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 19:36:56,766 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 19:36:56,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 19:36:56,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 19:36:56,773 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 19:36:56,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 19:36:56,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 19:36:56,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 19:36:56,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 19:36:56,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 19:36:56,779 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 19:36:56,781 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 19:36:56,783 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 19:36:56,784 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 19:36:56,785 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 19:36:56,786 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 19:36:56,787 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 19:36:56,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 19:36:56,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 19:36:56,791 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 19:36:56,792 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 19:36:56,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 19:36:56,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 19:36:56,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 19:36:56,795 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 19:36:56,796 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 19:36:56,796 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 19:36:56,797 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 19:36:56,797 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 19:36:56,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 19:36:56,798 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 19:36:56,798 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 19:36:56,799 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 19:36:56,799 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 19:36:56,800 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 19:36:56,824 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 19:36:56,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 19:36:56,825 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 19:36:56,825 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 19:36:56,825 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 19:36:56,825 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 19:36:56,826 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 19:36:56,826 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 19:36:56,826 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 19:36:56,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 19:36:56,827 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 19:36:56,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 19:36:56,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 19:36:56,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 19:36:56,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 19:36:56,828 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 19:36:56,828 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 19:36:56,828 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 19:36:56,828 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 19:36:56,828 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 19:36:56,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 19:36:56,828 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 19:36:56,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 19:36:56,829 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 19:36:56,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 19:36:56,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 19:36:56,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:36:56,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 19:36:56,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 19:36:56,829 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 19:36:56,829 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 19:36:56,830 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 19:36:56,830 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 19:36:56,830 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 19:36:56,830 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 19:36:56,830 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_c8628aa7-fc6b-42f2-9075-6d4f2254d605/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02f127c20511fa02dafb6b2fc07e9971c3cba295 [2020-12-09 19:36:57,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 19:36:57,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 19:36:57,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 19:36:57,103 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 19:36:57,104 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 19:36:57,105 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound2.i [2020-12-09 19:36:57,146 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan/data/ac0d074f5/6bcfaab963c045058b31eba32451dd16/FLAG0c7b4d74d [2020-12-09 19:36:57,529 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 19:36:57,529 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound2.i [2020-12-09 19:36:57,534 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan/data/ac0d074f5/6bcfaab963c045058b31eba32451dd16/FLAG0c7b4d74d [2020-12-09 19:36:57,544 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan/data/ac0d074f5/6bcfaab963c045058b31eba32451dd16 [2020-12-09 19:36:57,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 19:36:57,547 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 19:36:57,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 19:36:57,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 19:36:57,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 19:36:57,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:36:57" (1/1) ... [2020-12-09 19:36:57,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@163d41d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:36:57, skipping insertion in model container [2020-12-09 19:36:57,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:36:57" (1/1) ... [2020-12-09 19:36:57,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 19:36:57,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 19:36:57,662 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_c8628aa7-fc6b-42f2-9075-6d4f2254d605/sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound2.i[951,964] [2020-12-09 19:36:57,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:36:57,679 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 19:36:57,689 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_c8628aa7-fc6b-42f2-9075-6d4f2254d605/sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound2.i[951,964] [2020-12-09 19:36:57,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:36:57,703 INFO L208 MainTranslator]: Completed translation [2020-12-09 19:36:57,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:36:57 WrapperNode [2020-12-09 19:36:57,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 19:36:57,705 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 19:36:57,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 19:36:57,705 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 19:36:57,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:36:57" (1/1) ... [2020-12-09 19:36:57,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:36:57" (1/1) ... [2020-12-09 19:36:57,733 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 19:36:57,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 19:36:57,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 19:36:57,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 19:36:57,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:36:57" (1/1) ... [2020-12-09 19:36:57,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:36:57" (1/1) ... [2020-12-09 19:36:57,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:36:57" (1/1) ... [2020-12-09 19:36:57,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:36:57" (1/1) ... [2020-12-09 19:36:57,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:36:57" (1/1) ... [2020-12-09 19:36:57,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:36:57" (1/1) ... [2020-12-09 19:36:57,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:36:57" (1/1) ... [2020-12-09 19:36:57,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 19:36:57,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 19:36:57,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 19:36:57,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 19:36:57,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:36:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/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 19:36:57,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 19:36:57,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 19:36:57,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 19:36:57,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 19:36:58,006 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 19:36:58,006 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-09 19:36:58,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:36:58 BoogieIcfgContainer [2020-12-09 19:36:58,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 19:36:58,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 19:36:58,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 19:36:58,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 19:36:58,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:36:57" (1/3) ... [2020-12-09 19:36:58,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fad327c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:36:58, skipping insertion in model container [2020-12-09 19:36:58,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:36:57" (2/3) ... [2020-12-09 19:36:58,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fad327c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:36:58, skipping insertion in model container [2020-12-09 19:36:58,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:36:58" (3/3) ... [2020-12-09 19:36:58,013 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_valuebound2.i [2020-12-09 19:36:58,023 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 19:36:58,025 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-09 19:36:58,033 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-09 19:36:58,049 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 19:36:58,050 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 19:36:58,050 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 19:36:58,050 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 19:36:58,050 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 19:36:58,050 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 19:36:58,055 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 19:36:58,055 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 19:36:58,064 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-12-09 19:36:58,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 19:36:58,068 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:36:58,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:36:58,068 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:36:58,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:36:58,072 INFO L82 PathProgramCache]: Analyzing trace with hash 119520859, now seen corresponding path program 1 times [2020-12-09 19:36:58,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:36:58,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390720347] [2020-12-09 19:36:58,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 19:36:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:36:58,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 19:36:58,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:36:58,172 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 19:36:58,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:36:58,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390720347] [2020-12-09 19:36:58,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:36:58,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:36:58,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720536626] [2020-12-09 19:36:58,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 19:36:58,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:36:58,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 19:36:58,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 19:36:58,194 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-12-09 19:36:58,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:36:58,210 INFO L93 Difference]: Finished difference Result 37 states and 54 transitions. [2020-12-09 19:36:58,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 19:36:58,211 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-09 19:36:58,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:36:58,220 INFO L225 Difference]: With dead ends: 37 [2020-12-09 19:36:58,220 INFO L226 Difference]: Without dead ends: 16 [2020-12-09 19:36:58,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 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 19:36:58,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-09 19:36:58,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-09 19:36:58,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-09 19:36:58,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-12-09 19:36:58,252 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 8 [2020-12-09 19:36:58,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:36:58,253 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-12-09 19:36:58,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 19:36:58,253 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-12-09 19:36:58,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 19:36:58,254 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:36:58,254 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:36:58,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 19:36:58,455 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:36:58,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:36:58,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1186643548, now seen corresponding path program 1 times [2020-12-09 19:36:58,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:36:58,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [36363884] [2020-12-09 19:36:58,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 19:36:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:36:58,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 19:36:58,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:36:58,631 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 19:36:58,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:36:58,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [36363884] [2020-12-09 19:36:58,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:36:58,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 19:36:58,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277634201] [2020-12-09 19:36:58,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 19:36:58,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:36:58,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 19:36:58,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-09 19:36:58,634 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 7 states. [2020-12-09 19:36:58,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:36:58,923 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2020-12-09 19:36:58,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 19:36:58,923 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2020-12-09 19:36:58,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:36:58,924 INFO L225 Difference]: With dead ends: 29 [2020-12-09 19:36:58,924 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 19:36:58,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-12-09 19:36:58,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 19:36:58,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2020-12-09 19:36:58,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-09 19:36:58,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2020-12-09 19:36:58,929 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 9 [2020-12-09 19:36:58,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:36:58,929 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2020-12-09 19:36:58,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 19:36:58,929 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2020-12-09 19:36:58,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 19:36:58,929 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:36:58,930 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:36:59,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 19:36:59,132 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:36:59,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:36:59,134 INFO L82 PathProgramCache]: Analyzing trace with hash -2054849417, now seen corresponding path program 1 times [2020-12-09 19:36:59,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:36:59,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1336100440] [2020-12-09 19:36:59,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 19:36:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:36:59,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-09 19:36:59,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:36:59,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:36:59,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:36:59,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:36:59,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1336100440] [2020-12-09 19:36:59,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2062822752] [2020-12-09 19:36:59,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt [2020-12-09 19:36:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:36:59,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 19:36:59,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:37:00,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:37:00,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:37:00,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:37:00,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484884590] [2020-12-09 19:37:00,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/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 19:37:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:37:00,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-09 19:37:00,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:37:00,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:37:00,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:37:00,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:37:00,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 19:37:00,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6, 6, 8, 6] total 14 [2020-12-09 19:37:00,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073683638] [2020-12-09 19:37:00,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-09 19:37:00,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:37:00,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-09 19:37:00,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-12-09 19:37:00,141 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 14 states. [2020-12-09 19:37:00,706 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 21 [2020-12-09 19:37:00,974 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2020-12-09 19:37:05,478 WARN L197 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 15 [2020-12-09 19:37:05,867 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2020-12-09 19:37:06,433 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-12-09 19:37:06,880 WARN L197 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2020-12-09 19:37:07,281 WARN L197 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 19 [2020-12-09 19:37:07,537 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-12-09 19:37:08,112 WARN L197 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2020-12-09 19:37:08,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:37:08,266 INFO L93 Difference]: Finished difference Result 87 states and 103 transitions. [2020-12-09 19:37:08,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-09 19:37:08,267 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 11 [2020-12-09 19:37:08,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:37:08,268 INFO L225 Difference]: With dead ends: 87 [2020-12-09 19:37:08,269 INFO L226 Difference]: Without dead ends: 75 [2020-12-09 19:37:08,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=277, Invalid=779, Unknown=0, NotChecked=0, Total=1056 [2020-12-09 19:37:08,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-12-09 19:37:08,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 35. [2020-12-09 19:37:08,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-09 19:37:08,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2020-12-09 19:37:08,276 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 11 [2020-12-09 19:37:08,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:37:08,276 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2020-12-09 19:37:08,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-09 19:37:08,276 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2020-12-09 19:37:08,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 19:37:08,276 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:37:08,276 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:37:08,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 cvc4 --incremental --print-success --lang smt [2020-12-09 19:37:08,881 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:37:08,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:37:08,882 INFO L82 PathProgramCache]: Analyzing trace with hash -580289007, now seen corresponding path program 1 times [2020-12-09 19:37:08,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:37:08,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521821641] [2020-12-09 19:37:08,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-09 19:37:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:37:08,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 19:37:08,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:37:08,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:37:08,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:37:08,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521821641] [2020-12-09 19:37:08,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:37:08,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 19:37:08,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791781533] [2020-12-09 19:37:08,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 19:37:08,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:37:08,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 19:37:08,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 19:37:08,964 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand 3 states. [2020-12-09 19:37:09,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:37:09,007 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2020-12-09 19:37:09,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 19:37:09,009 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-12-09 19:37:09,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:37:09,010 INFO L225 Difference]: With dead ends: 52 [2020-12-09 19:37:09,011 INFO L226 Difference]: Without dead ends: 35 [2020-12-09 19:37:09,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 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 19:37:09,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-09 19:37:09,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-12-09 19:37:09,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-09 19:37:09,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2020-12-09 19:37:09,015 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 13 [2020-12-09 19:37:09,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:37:09,016 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2020-12-09 19:37:09,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 19:37:09,016 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2020-12-09 19:37:09,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 19:37:09,016 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:37:09,016 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:37:09,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-09 19:37:09,218 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:37:09,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:37:09,220 INFO L82 PathProgramCache]: Analyzing trace with hash 296629383, now seen corresponding path program 1 times [2020-12-09 19:37:09,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:37:09,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711787170] [2020-12-09 19:37:09,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-12-09 19:37:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:37:09,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-09 19:37:09,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:37:09,447 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:37:09,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:37:10,594 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:37:10,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711787170] [2020-12-09 19:37:10,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1335278233] [2020-12-09 19:37:10,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt [2020-12-09 19:37:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:37:10,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 19:37:10,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:37:10,699 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:37:10,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:37:12,248 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:37:12,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395643119] [2020-12-09 19:37:12,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:37:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:37:12,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-09 19:37:12,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:37:12,319 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:37:12,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:37:12,490 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:37:12,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 19:37:12,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 10, 8, 10, 8] total 18 [2020-12-09 19:37:12,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141305358] [2020-12-09 19:37:12,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-09 19:37:12,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:37:12,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-09 19:37:12,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-12-09 19:37:12,492 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand 18 states. [2020-12-09 19:37:13,510 WARN L197 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2020-12-09 19:37:14,594 WARN L197 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-12-09 19:37:15,056 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2020-12-09 19:37:15,646 WARN L197 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 19 [2020-12-09 19:37:16,403 WARN L197 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2020-12-09 19:37:17,015 WARN L197 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2020-12-09 19:37:20,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:37:20,527 INFO L93 Difference]: Finished difference Result 84 states and 102 transitions. [2020-12-09 19:37:20,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-09 19:37:20,530 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 17 [2020-12-09 19:37:20,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:37:20,531 INFO L225 Difference]: With dead ends: 84 [2020-12-09 19:37:20,531 INFO L226 Difference]: Without dead ends: 61 [2020-12-09 19:37:20,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 75 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=340, Invalid=850, Unknown=0, NotChecked=0, Total=1190 [2020-12-09 19:37:20,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-09 19:37:20,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 39. [2020-12-09 19:37:20,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-09 19:37:20,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-12-09 19:37:20,537 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 17 [2020-12-09 19:37:20,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:37:20,537 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-12-09 19:37:20,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-09 19:37:20,537 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-12-09 19:37:20,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 19:37:20,538 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:37:20,538 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:37:21,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt,8 mathsat -unsat_core_generation=3,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:37:21,141 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:37:21,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:37:21,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1023135329, now seen corresponding path program 2 times [2020-12-09 19:37:21,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:37:21,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497256491] [2020-12-09 19:37:21,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-12-09 19:37:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:37:21,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 19:37:21,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:37:21,247 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:37:21,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:37:21,278 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:37:21,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [497256491] [2020-12-09 19:37:21,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [636213671] [2020-12-09 19:37:21,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt [2020-12-09 19:37:21,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-09 19:37:21,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 19:37:21,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 19:37:21,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:37:21,360 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:37:21,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:37:21,378 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:37:21,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642935924] [2020-12-09 19:37:21,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:37:21,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-09 19:37:21,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 19:37:21,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 19:37:21,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:37:21,438 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:37:21,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:37:21,451 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:37:21,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 19:37:21,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4, 5, 4, 5] total 7 [2020-12-09 19:37:21,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482113990] [2020-12-09 19:37:21,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 19:37:21,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:37:21,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 19:37:21,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-09 19:37:21,453 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 7 states. [2020-12-09 19:37:21,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:37:21,543 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2020-12-09 19:37:21,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 19:37:21,545 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-12-09 19:37:21,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:37:21,545 INFO L225 Difference]: With dead ends: 59 [2020-12-09 19:37:21,545 INFO L226 Difference]: Without dead ends: 31 [2020-12-09 19:37:21,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 100 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-09 19:37:21,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-09 19:37:21,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-12-09 19:37:21,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-09 19:37:21,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-12-09 19:37:21,550 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 19 [2020-12-09 19:37:21,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:37:21,550 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-12-09 19:37:21,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 19:37:21,550 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-12-09 19:37:21,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-09 19:37:21,551 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:37:21,551 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:37:22,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 mathsat -unsat_core_generation=3,12 cvc4 --incremental --print-success --lang smt [2020-12-09 19:37:22,153 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:37:22,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:37:22,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1791789455, now seen corresponding path program 3 times [2020-12-09 19:37:22,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:37:22,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [514720288] [2020-12-09 19:37:22,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2020-12-09 19:37:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:37:22,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-09 19:37:22,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:37:22,382 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 19:37:22,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:37:22,649 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 19:37:22,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [514720288] [2020-12-09 19:37:22,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2141193489] [2020-12-09 19:37:22,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan/cvc4 Starting monitored process 15 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4 --incremental --print-success --lang smt [2020-12-09 19:37:22,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-09 19:37:22,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 19:37:22,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 19:37:22,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:37:22,903 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:37:22,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:37:23,085 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:37:23,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200844914] [2020-12-09 19:37:23,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c8628aa7-fc6b-42f2-9075-6d4f2254d605/bin/utaipan/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 19:37:23,181 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-09 19:37:23,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 19:37:23,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 19:37:23,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:37:23,242 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:37:23,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 19:37:23,256 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 19:37:23,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 19:37:23,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 5, 7, 5, 7] total 25 [2020-12-09 19:37:23,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994551723] [2020-12-09 19:37:23,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-09 19:37:23,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:37:23,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-09 19:37:23,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2020-12-09 19:37:23,258 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 25 states. [2020-12-09 19:37:23,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:37:23,706 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-12-09 19:37:23,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 19:37:23,708 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 25 [2020-12-09 19:37:23,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:37:23,709 INFO L225 Difference]: With dead ends: 34 [2020-12-09 19:37:23,709 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 19:37:23,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 116 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=166, Invalid=826, Unknown=0, NotChecked=0, Total=992 [2020-12-09 19:37:23,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 19:37:23,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 19:37:23,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 19:37:23,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 19:37:23,710 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-12-09 19:37:23,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:37:23,710 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 19:37:23,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-09 19:37:23,710 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 19:37:23,710 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 19:37:24,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 mathsat -unsat_core_generation=3,15 cvc4 --incremental --print-success --lang smt [2020-12-09 19:37:24,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 19:37:24,576 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 28 [2020-12-09 19:37:25,154 WARN L197 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2020-12-09 19:37:25,158 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2020-12-09 19:37:25,158 INFO L262 CegarLoopResult]: For program point L19(lines 19 22) no Hoare annotation was computed. [2020-12-09 19:37:25,158 INFO L258 CegarLoopResult]: At program point L19-2(line 40) the Hoare annotation is: (let ((.cse0 (not (bvuge ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0))) (.cse4 (= ULTIMATE.start_main_~b~0 (bvmul ULTIMATE.start_main_~B~0 (_ bv2 32)))) (.cse3 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0)) (.cse5 (= (_ bv0 32) ULTIMATE.start_main_~q~0)) (.cse1 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse2 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse7 (bvule ULTIMATE.start_main_~A~0 (_ bv2 32))) (.cse6 (= (_ bv1 32) ULTIMATE.start_main_~B~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6) (and .cse0 .cse1 (bvule (bvadd (bvmul (bvneg ULTIMATE.start_main_~b~0) (_ bv4294967295 32)) ULTIMATE.start_main_~r~0) (_ bv2 32)) .cse2 .cse7 .cse4 .cse6 (= (bvadd (bvmul (bvmul (bvudiv ULTIMATE.start_main_~b~0 (_ bv2 32)) ULTIMATE.start_main_~q~0) (_ bv2 32)) ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~A~0)) (and (bvuge ULTIMATE.start_main_~r~0 (_ bv2 32)) .cse1 .cse2 .cse3 (bvule ULTIMATE.start_main_~r~0 (_ bv2 32)) .cse5 .cse6 (= (_ bv4 32) ULTIMATE.start_main_~b~0)) (and (= ULTIMATE.start_main_~A~0 (bvadd (bvmul ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~r~0)) .cse1 .cse2 .cse7 (or (not (bvuge ULTIMATE.start_main_~r~0 (bvmul ULTIMATE.start_main_~b~0 (_ bv2 32)))) (= (bvadd (bvmul (bvmul (bvudiv (bvmul ULTIMATE.start_main_~b~0 (_ bv4 32)) (_ bv2 32)) ULTIMATE.start_main_~q~0) (_ bv2 32)) ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~A~0)) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~B~0) .cse6))) [2020-12-09 19:37:25,158 INFO L262 CegarLoopResult]: For program point L19-3(lines 19 22) no Hoare annotation was computed. [2020-12-09 19:37:25,158 INFO L262 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-12-09 19:37:25,159 INFO L265 CegarLoopResult]: At program point L19-5(lines 18 24) the Hoare annotation is: true [2020-12-09 19:37:25,159 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 19:37:25,159 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 19:37:25,159 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 19:37:25,159 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2020-12-09 19:37:25,159 INFO L262 CegarLoopResult]: For program point L20(lines 20 21) no Hoare annotation was computed. [2020-12-09 19:37:25,159 INFO L262 CegarLoopResult]: For program point L20-1(lines 20 21) no Hoare annotation was computed. [2020-12-09 19:37:25,159 INFO L265 CegarLoopResult]: At program point L49(lines 25 50) the Hoare annotation is: true [2020-12-09 19:37:25,159 INFO L262 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-12-09 19:37:25,159 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 19:37:25,159 INFO L262 CegarLoopResult]: For program point L38-1(lines 38 47) no Hoare annotation was computed. [2020-12-09 19:37:25,159 INFO L258 CegarLoopResult]: At program point L34-2(lines 34 37) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0)) (.cse0 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse2 (bvule ULTIMATE.start_main_~r~0 (_ bv2 32))) (.cse3 (= (_ bv0 32) ULTIMATE.start_main_~q~0)) (.cse4 (= (_ bv1 32) ULTIMATE.start_main_~B~0))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~b~0 (bvmul ULTIMATE.start_main_~B~0 (_ bv2 32))) (bvuge ULTIMATE.start_main_~r~0 (_ bv1 32)) .cse3 .cse4) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~B~0) .cse3 .cse4) (and (bvuge ULTIMATE.start_main_~r~0 (_ bv2 32)) (= ULTIMATE.start_main_~A~0 (bvadd (bvmul ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~r~0)) .cse0 .cse2 .cse3 .cse4 (= (_ bv4 32) ULTIMATE.start_main_~b~0)))) [2020-12-09 19:37:25,159 INFO L262 CegarLoopResult]: For program point L43(lines 43 46) no Hoare annotation was computed. [2020-12-09 19:37:25,159 INFO L262 CegarLoopResult]: For program point L43-2(lines 25 50) no Hoare annotation was computed. [2020-12-09 19:37:25,160 INFO L262 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-12-09 19:37:25,169 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:796) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:283) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:240) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-12-09 19:37:25,171 INFO L168 Benchmark]: Toolchain (without parser) took 27623.86 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 41.3 MB in the beginning and 45.2 MB in the end (delta: -3.9 MB). Peak memory consumption was 35.3 MB. Max. memory is 16.1 GB. [2020-12-09 19:37:25,171 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 60.8 MB. Free memory was 42.9 MB in the beginning and 42.8 MB in the end (delta: 84.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:37:25,172 INFO L168 Benchmark]: CACSL2BoogieTranslator took 156.25 ms. Allocated memory is still 60.8 MB. Free memory was 41.3 MB in the beginning and 31.1 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 19:37:25,172 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.67 ms. Allocated memory is still 60.8 MB. Free memory was 30.8 MB in the beginning and 44.4 MB in the end (delta: -13.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 19:37:25,173 INFO L168 Benchmark]: Boogie Preprocessor took 19.65 ms. Allocated memory is still 60.8 MB. Free memory was 44.4 MB in the beginning and 43.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:37:25,173 INFO L168 Benchmark]: RCFGBuilder took 253.60 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 30.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 19:37:25,173 INFO L168 Benchmark]: TraceAbstraction took 27161.89 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 29.7 MB in the beginning and 45.2 MB in the end (delta: -15.5 MB). Peak memory consumption was 26.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:37:25,175 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 60.8 MB. Free memory was 42.9 MB in the beginning and 42.8 MB in the end (delta: 84.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 156.25 ms. Allocated memory is still 60.8 MB. Free memory was 41.3 MB in the beginning and 31.1 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 28.67 ms. Allocated memory is still 60.8 MB. Free memory was 30.8 MB in the beginning and 44.4 MB in the end (delta: -13.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.65 ms. Allocated memory is still 60.8 MB. Free memory was 44.4 MB in the beginning and 43.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 253.60 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 30.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 27161.89 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 29.7 MB in the beginning and 45.2 MB in the end (delta: -15.5 MB). Peak memory consumption was 26.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 21]: 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 2 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((((1bv32 == cond && r == A) && ~bvule32(r, 2bv32)) && b == ~bvmul32(B, 2bv32)) && ~bvuge32(r, 1bv32)) && 0bv32 == q) && 1bv32 == B) || (((((1bv32 == cond && r == A) && ~bvule32(r, 2bv32)) && b == B) && 0bv32 == q) && 1bv32 == B)) || ((((((~bvuge32(r, 2bv32) && A == ~bvadd64(~bvmul32(q, b), r)) && 1bv32 == cond) && ~bvule32(r, 2bv32)) && 0bv32 == q) && 1bv32 == B) && 4bv32 == b) - ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...