./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound100.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/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 4f53de0537ab1a664066f61626f063f9f32515d9 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound100.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/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 4f53de0537ab1a664066f61626f063f9f32515d9 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 17:39:25,310 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 17:39:25,312 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 17:39:25,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 17:39:25,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 17:39:25,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 17:39:25,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 17:39:25,348 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 17:39:25,350 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 17:39:25,350 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 17:39:25,351 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 17:39:25,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 17:39:25,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 17:39:25,354 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 17:39:25,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 17:39:25,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 17:39:25,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 17:39:25,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 17:39:25,358 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 17:39:25,360 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 17:39:25,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 17:39:25,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 17:39:25,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 17:39:25,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 17:39:25,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 17:39:25,367 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 17:39:25,367 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 17:39:25,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 17:39:25,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 17:39:25,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 17:39:25,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 17:39:25,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 17:39:25,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 17:39:25,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 17:39:25,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 17:39:25,373 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 17:39:25,373 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 17:39:25,374 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 17:39:25,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 17:39:25,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 17:39:25,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 17:39:25,376 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 17:39:25,392 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 17:39:25,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 17:39:25,393 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 17:39:25,393 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 17:39:25,393 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 17:39:25,393 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 17:39:25,393 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 17:39:25,393 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 17:39:25,393 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 17:39:25,394 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 17:39:25,394 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 17:39:25,394 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 17:39:25,394 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 17:39:25,394 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 17:39:25,394 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 17:39:25,395 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 17:39:25,395 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 17:39:25,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 17:39:25,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 17:39:25,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 17:39:25,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 17:39:25,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 17:39:25,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 17:39:25,395 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 17:39:25,395 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 17:39:25,396 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 17:39:25,396 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 17:39:25,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 17:39:25,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 17:39:25,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 17:39:25,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 17:39:25,396 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 17:39:25,396 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 17:39:25,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 17:39:25,397 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 17:39:25,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 17:39:25,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 17:39:25,397 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 17:39:25,397 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 17:39:25,397 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_f3561d86-e040-4537-a5ac-f03c899f7422/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f53de0537ab1a664066f61626f063f9f32515d9 [2020-12-09 17:39:25,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 17:39:25,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 17:39:25,605 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 17:39:25,606 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 17:39:25,607 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 17:39:25,607 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound100.c [2020-12-09 17:39:25,648 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan/data/ebf3ddb1e/5e69920369934765a357f9e70b5baa42/FLAG8942b3c94 [2020-12-09 17:39:25,995 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 17:39:25,995 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound100.c [2020-12-09 17:39:26,000 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan/data/ebf3ddb1e/5e69920369934765a357f9e70b5baa42/FLAG8942b3c94 [2020-12-09 17:39:26,009 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan/data/ebf3ddb1e/5e69920369934765a357f9e70b5baa42 [2020-12-09 17:39:26,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 17:39:26,012 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 17:39:26,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 17:39:26,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 17:39:26,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 17:39:26,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:39:26" (1/1) ... [2020-12-09 17:39:26,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71d3ceea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:39:26, skipping insertion in model container [2020-12-09 17:39:26,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:39:26" (1/1) ... [2020-12-09 17:39:26,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 17:39:26,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 17:39:26,137 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_f3561d86-e040-4537-a5ac-f03c899f7422/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound100.c[520,533] [2020-12-09 17:39:26,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 17:39:26,154 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 17:39:26,162 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_f3561d86-e040-4537-a5ac-f03c899f7422/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound100.c[520,533] [2020-12-09 17:39:26,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 17:39:26,177 INFO L208 MainTranslator]: Completed translation [2020-12-09 17:39:26,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:39:26 WrapperNode [2020-12-09 17:39:26,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 17:39:26,178 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 17:39:26,178 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 17:39:26,178 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 17:39:26,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:39:26" (1/1) ... [2020-12-09 17:39:26,192 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:39:26" (1/1) ... [2020-12-09 17:39:26,210 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 17:39:26,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 17:39:26,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 17:39:26,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 17:39:26,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:39:26" (1/1) ... [2020-12-09 17:39:26,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:39:26" (1/1) ... [2020-12-09 17:39:26,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:39:26" (1/1) ... [2020-12-09 17:39:26,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:39:26" (1/1) ... [2020-12-09 17:39:26,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:39:26" (1/1) ... [2020-12-09 17:39:26,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:39:26" (1/1) ... [2020-12-09 17:39:26,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:39:26" (1/1) ... [2020-12-09 17:39:26,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 17:39:26,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 17:39:26,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 17:39:26,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 17:39:26,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:39:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/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 17:39:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 17:39:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 17:39:26,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 17:39:26,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 17:39:26,487 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 17:39:26,487 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-09 17:39:26,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:39:26 BoogieIcfgContainer [2020-12-09 17:39:26,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 17:39:26,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 17:39:26,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 17:39:26,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 17:39:26,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:39:26" (1/3) ... [2020-12-09 17:39:26,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8575c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:39:26, skipping insertion in model container [2020-12-09 17:39:26,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:39:26" (2/3) ... [2020-12-09 17:39:26,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8575c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:39:26, skipping insertion in model container [2020-12-09 17:39:26,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:39:26" (3/3) ... [2020-12-09 17:39:26,494 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound100.c [2020-12-09 17:39:26,504 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 17:39:26,506 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 17:39:26,514 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 17:39:26,530 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 17:39:26,530 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 17:39:26,530 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 17:39:26,530 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 17:39:26,530 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 17:39:26,531 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 17:39:26,531 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 17:39:26,531 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 17:39:26,540 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-12-09 17:39:26,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 17:39:26,543 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:39:26,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 17:39:26,544 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:39:26,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:39:26,548 INFO L82 PathProgramCache]: Analyzing trace with hash 113318109, now seen corresponding path program 1 times [2020-12-09 17:39:26,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:39:26,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720338483] [2020-12-09 17:39:26,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:39:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:39:26,648 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 17:39:26,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720338483] [2020-12-09 17:39:26,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:39:26,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 17:39:26,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500011922] [2020-12-09 17:39:26,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 17:39:26,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:39:26,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 17:39:26,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 17:39:26,664 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-12-09 17:39:26,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:39:26,676 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2020-12-09 17:39:26,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 17:39:26,677 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-09 17:39:26,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:39:26,683 INFO L225 Difference]: With dead ends: 57 [2020-12-09 17:39:26,683 INFO L226 Difference]: Without dead ends: 27 [2020-12-09 17:39:26,685 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 17:39:26,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-09 17:39:26,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-12-09 17:39:26,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 17:39:26,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-12-09 17:39:26,709 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 5 [2020-12-09 17:39:26,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:39:26,709 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-12-09 17:39:26,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 17:39:26,709 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-12-09 17:39:26,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 17:39:26,709 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:39:26,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 17:39:26,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 17:39:26,710 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:39:26,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:39:26,711 INFO L82 PathProgramCache]: Analyzing trace with hash 111966592, now seen corresponding path program 1 times [2020-12-09 17:39:26,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:39:26,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028655669] [2020-12-09 17:39:26,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:39:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:39:26,786 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 17:39:26,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028655669] [2020-12-09 17:39:26,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:39:26,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 17:39:26,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815134342] [2020-12-09 17:39:26,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 17:39:26,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:39:26,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 17:39:26,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 17:39:26,789 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 4 states. [2020-12-09 17:39:26,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:39:26,857 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2020-12-09 17:39:26,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 17:39:26,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-09 17:39:26,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:39:26,864 INFO L225 Difference]: With dead ends: 30 [2020-12-09 17:39:26,864 INFO L226 Difference]: Without dead ends: 26 [2020-12-09 17:39:26,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 17:39:26,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-09 17:39:26,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2020-12-09 17:39:26,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 17:39:26,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-12-09 17:39:26,870 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 5 [2020-12-09 17:39:26,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:39:26,871 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-12-09 17:39:26,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 17:39:26,871 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-12-09 17:39:26,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 17:39:26,871 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:39:26,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:39:26,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 17:39:26,872 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:39:26,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:39:26,873 INFO L82 PathProgramCache]: Analyzing trace with hash 225868067, now seen corresponding path program 1 times [2020-12-09 17:39:26,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:39:26,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362101820] [2020-12-09 17:39:26,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:39:26,885 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 17:39:26,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [192262240] [2020-12-09 17:39:26,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/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 17:39:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:39:26,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-09 17:39:26,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:39:26,976 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 17:39:26,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:39:27,033 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 17:39:27,033 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 17:39:27,051 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 17:39:27,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362101820] [2020-12-09 17:39:27,051 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 17:39:27,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192262240] [2020-12-09 17:39:27,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:39:27,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-12-09 17:39:27,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929377786] [2020-12-09 17:39:27,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 17:39:27,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:39:27,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 17:39:27,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-09 17:39:27,054 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 10 states. [2020-12-09 17:39:29,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:39:29,189 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2020-12-09 17:39:29,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 17:39:29,189 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 7 [2020-12-09 17:39:29,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:39:29,190 INFO L225 Difference]: With dead ends: 58 [2020-12-09 17:39:29,190 INFO L226 Difference]: Without dead ends: 43 [2020-12-09 17:39:29,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2020-12-09 17:39:29,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-09 17:39:29,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2020-12-09 17:39:29,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-09 17:39:29,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2020-12-09 17:39:29,197 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 7 [2020-12-09 17:39:29,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:39:29,197 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2020-12-09 17:39:29,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 17:39:29,197 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2020-12-09 17:39:29,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 17:39:29,198 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:39:29,198 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-12-09 17:39:29,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-09 17:39:29,400 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:39:29,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:39:29,402 INFO L82 PathProgramCache]: Analyzing trace with hash 874023160, now seen corresponding path program 1 times [2020-12-09 17:39:29,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:39:29,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841306020] [2020-12-09 17:39:29,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:39:29,437 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 17:39:29,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [593185927] [2020-12-09 17:39:29,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/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 17:39:29,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:39:29,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-09 17:39:29,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:39:29,538 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:39:29,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:39:29,580 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 17:39:29,581 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 17:39:36,217 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 5 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:39:36,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841306020] [2020-12-09 17:39:36,218 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 17:39:36,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593185927] [2020-12-09 17:39:36,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [44341516] [2020-12-09 17:39:36,232 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2020-12-09 17:39:36,232 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 17:39:36,235 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 17:39:36,238 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 17:39:36,238 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 17:39:36,770 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 17:39:36,893 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-12-09 17:39:37,292 WARN L197 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 94 [2020-12-09 17:39:37,705 WARN L197 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 87 [2020-12-09 17:39:38,072 WARN L197 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 105 [2020-12-09 17:39:38,419 WARN L197 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 101 [2020-12-09 17:39:40,819 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 17:39:40,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 17:39:40,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-12-09 17:39:40,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887237126] [2020-12-09 17:39:40,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 17:39:40,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:39:40,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 17:39:40,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=337, Unknown=4, NotChecked=0, Total=420 [2020-12-09 17:39:40,821 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 12 states. [2020-12-09 17:39:46,993 WARN L197 SmtUtils]: Spent 6.02 s on a formula simplification that was a NOOP. DAG size: 25 [2020-12-09 17:39:53,067 WARN L197 SmtUtils]: Spent 6.04 s on a formula simplification that was a NOOP. DAG size: 23 [2020-12-09 17:39:59,139 WARN L197 SmtUtils]: Spent 6.04 s on a formula simplification that was a NOOP. DAG size: 27 [2020-12-09 17:41:52,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:41:52,775 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2020-12-09 17:41:52,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-09 17:41:52,781 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2020-12-09 17:41:52,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:41:52,782 INFO L225 Difference]: With dead ends: 97 [2020-12-09 17:41:52,782 INFO L226 Difference]: Without dead ends: 74 [2020-12-09 17:41:52,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 49.0s TimeCoverageRelationStatistics Valid=184, Invalid=673, Unknown=13, NotChecked=0, Total=870 [2020-12-09 17:41:52,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-09 17:41:52,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 58. [2020-12-09 17:41:52,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-09 17:41:52,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-12-09 17:41:52,790 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 17 [2020-12-09 17:41:52,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:41:52,790 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-12-09 17:41:52,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 17:41:52,790 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-12-09 17:41:52,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-09 17:41:52,790 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:41:52,790 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1] [2020-12-09 17:41:52,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:41:52,992 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:41:52,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:41:52,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1973720903, now seen corresponding path program 1 times [2020-12-09 17:41:52,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:41:52,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645135508] [2020-12-09 17:41:52,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:41:53,023 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 17:41:53,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [970446793] [2020-12-09 17:41:53,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/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 17:41:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:41:53,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-09 17:41:53,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:41:53,139 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:41:53,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:41:53,237 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 17:41:53,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645135508] [2020-12-09 17:41:53,238 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 17:41:53,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970446793] [2020-12-09 17:41:53,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1470079455] [2020-12-09 17:41:53,239 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2020-12-09 17:41:53,240 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 17:41:53,240 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 17:41:53,240 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 17:41:53,240 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 17:41:53,653 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 17:41:54,154 WARN L197 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 94 [2020-12-09 17:41:54,607 WARN L197 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 87 [2020-12-09 17:41:55,002 WARN L197 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 95 [2020-12-09 17:41:55,397 WARN L197 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 89 [2020-12-09 17:41:57,844 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 17:41:57,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 17:41:57,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-12-09 17:41:57,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743941573] [2020-12-09 17:41:57,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 17:41:57,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:41:57,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 17:41:57,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=344, Unknown=1, NotChecked=0, Total=420 [2020-12-09 17:41:57,846 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 12 states. [2020-12-09 17:42:06,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:42:06,130 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2020-12-09 17:42:06,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-09 17:42:06,130 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-12-09 17:42:06,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:42:06,130 INFO L225 Difference]: With dead ends: 62 [2020-12-09 17:42:06,131 INFO L226 Difference]: Without dead ends: 50 [2020-12-09 17:42:06,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=151, Invalid=604, Unknown=1, NotChecked=0, Total=756 [2020-12-09 17:42:06,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-09 17:42:06,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-12-09 17:42:06,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-09 17:42:06,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-12-09 17:42:06,136 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 23 [2020-12-09 17:42:06,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:42:06,136 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-12-09 17:42:06,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 17:42:06,136 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-12-09 17:42:06,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-09 17:42:06,137 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:42:06,137 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1] [2020-12-09 17:42:06,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2020-12-09 17:42:06,338 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:42:06,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:42:06,340 INFO L82 PathProgramCache]: Analyzing trace with hash 2062983086, now seen corresponding path program 2 times [2020-12-09 17:42:06,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:42:06,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222559350] [2020-12-09 17:42:06,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:42:06,366 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 17:42:06,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [859181389] [2020-12-09 17:42:06,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:42:06,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-12-09 17:42:06,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 17:42:06,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-09 17:42:06,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:42:06,520 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-12-09 17:42:06,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:42:17,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222559350] [2020-12-09 17:42:17,090 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 17:42:17,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859181389] [2020-12-09 17:42:17,090 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-09 17:42:17,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [651646040] [2020-12-09 17:42:17,091 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2020-12-09 17:42:17,091 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 17:42:17,092 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 17:42:17,092 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 17:42:17,092 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 17:42:17,495 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 17:42:17,995 WARN L197 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 94 [2020-12-09 17:42:18,487 WARN L197 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 87 [2020-12-09 17:42:18,931 WARN L197 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 102 [2020-12-09 17:42:19,381 WARN L197 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 95 [2020-12-09 17:42:23,225 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 17:42:23,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:42:23,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-09 17:42:23,226 ERROR L205 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2020-12-09 17:42:23,226 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 17:42:23,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:42:23,464 WARN L254 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-09 17:42:23,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:42:23 BoogieIcfgContainer [2020-12-09 17:42:23,464 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 17:42:23,465 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 17:42:23,465 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 17:42:23,465 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 17:42:23,465 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:39:26" (3/4) ... [2020-12-09 17:42:23,467 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 17:42:23,467 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 17:42:23,468 INFO L168 Benchmark]: Toolchain (without parser) took 177455.65 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 60.1 MB in the beginning and 65.2 MB in the end (delta: -5.1 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. [2020-12-09 17:42:23,468 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 100.7 MB. Free memory was 76.4 MB in the beginning and 76.2 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 17:42:23,469 INFO L168 Benchmark]: CACSL2BoogieTranslator took 164.19 ms. Allocated memory is still 100.7 MB. Free memory was 60.0 MB in the beginning and 76.1 MB in the end (delta: -16.1 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2020-12-09 17:42:23,469 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.98 ms. Allocated memory is still 100.7 MB. Free memory was 76.1 MB in the beginning and 74.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 17:42:23,470 INFO L168 Benchmark]: Boogie Preprocessor took 20.85 ms. Allocated memory is still 100.7 MB. Free memory was 74.5 MB in the beginning and 73.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 17:42:23,470 INFO L168 Benchmark]: RCFGBuilder took 256.66 ms. Allocated memory is still 100.7 MB. Free memory was 73.3 MB in the beginning and 69.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 17:42:23,470 INFO L168 Benchmark]: TraceAbstraction took 176974.83 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 69.5 MB in the beginning and 66.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 28.9 MB. Max. memory is 16.1 GB. [2020-12-09 17:42:23,471 INFO L168 Benchmark]: Witness Printer took 2.51 ms. Allocated memory is still 123.7 MB. Free memory was 66.0 MB in the beginning and 65.2 MB in the end (delta: 806.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 17:42:23,473 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 100.7 MB. Free memory was 76.4 MB in the beginning and 76.2 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 164.19 ms. Allocated memory is still 100.7 MB. Free memory was 60.0 MB in the beginning and 76.1 MB in the end (delta: -16.1 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.98 ms. Allocated memory is still 100.7 MB. Free memory was 76.1 MB in the beginning and 74.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.85 ms. Allocated memory is still 100.7 MB. Free memory was 74.5 MB in the beginning and 73.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 256.66 ms. Allocated memory is still 100.7 MB. Free memory was 73.3 MB in the beginning and 69.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 176974.83 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 69.5 MB in the beginning and 66.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 28.9 MB. Max. memory is 16.1 GB. * Witness Printer took 2.51 ms. Allocated memory is still 123.7 MB. Free memory was 66.0 MB in the beginning and 65.2 MB in the end (delta: 806.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: 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: [L20] int counter = 0; [L22] int n; [L23] long long a, s, t; [L24] n = __VERIFIER_nondet_int() [L26] a = 0 [L27] s = 1 [L28] t = 1 [L30] EXPR counter++ [L30] COND TRUE counter++<100 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] EXPR counter++ [L30] COND TRUE counter++<100 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] EXPR counter++ [L30] COND TRUE counter++<100 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] EXPR counter++ [L30] COND TRUE counter++<100 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] EXPR counter++ [L30] COND TRUE counter++<100 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 176.9s, OverallIterations: 6, TraceHistogramMax: 5, AutomataDifference: 142.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 77 SDtfs, 320 SDslu, 136 SDs, 0 SdLazy, 312 SolverSat, 260 SolverUnsat, 42 SolverUnknown, 0 SolverNotchecked, 103.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 53.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 22 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 19544 SizeOfPredicates, 18 NumberOfNonLiveVariables, 260 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 13/50 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 17:42:24,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 17:42:24,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 17:42:24,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 17:42:24,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 17:42:24,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 17:42:24,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 17:42:24,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 17:42:24,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 17:42:24,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 17:42:24,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 17:42:24,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 17:42:24,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 17:42:24,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 17:42:24,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 17:42:24,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 17:42:24,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 17:42:24,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 17:42:24,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 17:42:24,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 17:42:24,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 17:42:24,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 17:42:24,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 17:42:24,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 17:42:24,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 17:42:24,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 17:42:24,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 17:42:25,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 17:42:25,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 17:42:25,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 17:42:25,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 17:42:25,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 17:42:25,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 17:42:25,004 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 17:42:25,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 17:42:25,005 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 17:42:25,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 17:42:25,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 17:42:25,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 17:42:25,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 17:42:25,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 17:42:25,008 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 17:42:25,033 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 17:42:25,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 17:42:25,034 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 17:42:25,034 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 17:42:25,034 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 17:42:25,034 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 17:42:25,034 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 17:42:25,034 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 17:42:25,035 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 17:42:25,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 17:42:25,035 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 17:42:25,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 17:42:25,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 17:42:25,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 17:42:25,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 17:42:25,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 17:42:25,037 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 17:42:25,037 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 17:42:25,037 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 17:42:25,037 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 17:42:25,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 17:42:25,037 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 17:42:25,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 17:42:25,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 17:42:25,038 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 17:42:25,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 17:42:25,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 17:42:25,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 17:42:25,038 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 17:42:25,038 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 17:42:25,038 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 17:42:25,039 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 17:42:25,039 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 17:42:25,039 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 17:42:25,039 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 17:42:25,039 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_f3561d86-e040-4537-a5ac-f03c899f7422/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f53de0537ab1a664066f61626f063f9f32515d9 [2020-12-09 17:42:25,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 17:42:25,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 17:42:25,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 17:42:25,300 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 17:42:25,300 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 17:42:25,301 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound100.c [2020-12-09 17:42:25,345 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan/data/8724e5716/f66bbd5770854d408279659ccc1d4879/FLAGd9bcc7b18 [2020-12-09 17:42:25,742 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 17:42:25,743 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound100.c [2020-12-09 17:42:25,749 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan/data/8724e5716/f66bbd5770854d408279659ccc1d4879/FLAGd9bcc7b18 [2020-12-09 17:42:25,762 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan/data/8724e5716/f66bbd5770854d408279659ccc1d4879 [2020-12-09 17:42:25,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 17:42:25,766 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 17:42:25,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 17:42:25,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 17:42:25,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 17:42:25,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:42:25" (1/1) ... [2020-12-09 17:42:25,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15bf28dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:42:25, skipping insertion in model container [2020-12-09 17:42:25,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:42:25" (1/1) ... [2020-12-09 17:42:25,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 17:42:25,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 17:42:25,893 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_f3561d86-e040-4537-a5ac-f03c899f7422/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound100.c[520,533] [2020-12-09 17:42:25,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 17:42:25,913 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 17:42:25,922 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_f3561d86-e040-4537-a5ac-f03c899f7422/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound100.c[520,533] [2020-12-09 17:42:25,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 17:42:25,937 INFO L208 MainTranslator]: Completed translation [2020-12-09 17:42:25,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:42:25 WrapperNode [2020-12-09 17:42:25,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 17:42:25,938 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 17:42:25,938 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 17:42:25,938 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 17:42:25,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:42:25" (1/1) ... [2020-12-09 17:42:25,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:42:25" (1/1) ... [2020-12-09 17:42:25,973 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 17:42:25,974 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 17:42:25,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 17:42:25,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 17:42:25,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:42:25" (1/1) ... [2020-12-09 17:42:25,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:42:25" (1/1) ... [2020-12-09 17:42:25,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:42:25" (1/1) ... [2020-12-09 17:42:25,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:42:25" (1/1) ... [2020-12-09 17:42:25,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:42:25" (1/1) ... [2020-12-09 17:42:25,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:42:25" (1/1) ... [2020-12-09 17:42:25,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:42:25" (1/1) ... [2020-12-09 17:42:25,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 17:42:25,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 17:42:25,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 17:42:25,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 17:42:26,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:42:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/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 17:42:26,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 17:42:26,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 17:42:26,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 17:42:26,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 17:42:26,602 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 17:42:26,602 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-09 17:42:26,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:42:26 BoogieIcfgContainer [2020-12-09 17:42:26,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 17:42:26,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 17:42:26,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 17:42:26,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 17:42:26,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:42:25" (1/3) ... [2020-12-09 17:42:26,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b72c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:42:26, skipping insertion in model container [2020-12-09 17:42:26,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:42:25" (2/3) ... [2020-12-09 17:42:26,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b72c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:42:26, skipping insertion in model container [2020-12-09 17:42:26,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:42:26" (3/3) ... [2020-12-09 17:42:26,609 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound100.c [2020-12-09 17:42:26,619 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 17:42:26,625 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 17:42:26,634 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 17:42:26,653 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 17:42:26,653 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 17:42:26,653 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 17:42:26,653 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 17:42:26,653 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 17:42:26,653 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 17:42:26,653 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 17:42:26,653 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 17:42:26,663 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-12-09 17:42:26,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 17:42:26,667 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:42:26,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 17:42:26,668 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:42:26,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:42:26,672 INFO L82 PathProgramCache]: Analyzing trace with hash 890922791, now seen corresponding path program 1 times [2020-12-09 17:42:26,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 17:42:26,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429435095] [2020-12-09 17:42:26,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/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 17:42:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:42:26,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 17:42:26,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:42:26,746 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 17:42:26,746 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 17:42:26,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429435095] [2020-12-09 17:42:26,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:42:26,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 17:42:26,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890773315] [2020-12-09 17:42:26,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 17:42:26,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 17:42:26,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 17:42:26,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 17:42:26,762 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-12-09 17:42:26,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:42:26,777 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2020-12-09 17:42:26,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 17:42:26,778 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-09 17:42:26,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:42:26,785 INFO L225 Difference]: With dead ends: 62 [2020-12-09 17:42:26,785 INFO L226 Difference]: Without dead ends: 28 [2020-12-09 17:42:26,788 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 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 17:42:26,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-09 17:42:26,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-09 17:42:26,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 17:42:26,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-12-09 17:42:26,813 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2020-12-09 17:42:26,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:42:26,813 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-12-09 17:42:26,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 17:42:26,813 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-12-09 17:42:26,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 17:42:26,814 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:42:26,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 17:42:27,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 17:42:27,015 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:42:27,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:42:27,016 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-09 17:42:27,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 17:42:27,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146205230] [2020-12-09 17:42:27,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/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 17:42:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:42:27,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 17:42:27,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:42:27,113 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 17:42:27,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 17:42:27,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146205230] [2020-12-09 17:42:27,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:42:27,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 17:42:27,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143674293] [2020-12-09 17:42:27,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 17:42:27,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 17:42:27,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 17:42:27,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 17:42:27,115 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 4 states. [2020-12-09 17:42:27,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:42:27,485 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2020-12-09 17:42:27,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 17:42:27,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-09 17:42:27,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:42:27,492 INFO L225 Difference]: With dead ends: 54 [2020-12-09 17:42:27,492 INFO L226 Difference]: Without dead ends: 50 [2020-12-09 17:42:27,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 17:42:27,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-09 17:42:27,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2020-12-09 17:42:27,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-09 17:42:27,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-12-09 17:42:27,500 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 6 [2020-12-09 17:42:27,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:42:27,500 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-12-09 17:42:27,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 17:42:27,500 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-12-09 17:42:27,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 17:42:27,500 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:42:27,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:42:27,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 17:42:27,702 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:42:27,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:42:27,704 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2020-12-09 17:42:27,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 17:42:27,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689672214] [2020-12-09 17:42:27,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/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 17:42:27,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:42:27,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 17:42:27,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:42:27,811 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 17:42:27,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 17:42:27,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689672214] [2020-12-09 17:42:27,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:42:27,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 17:42:27,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240233227] [2020-12-09 17:42:27,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 17:42:27,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 17:42:27,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 17:42:27,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 17:42:27,812 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 4 states. [2020-12-09 17:42:28,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:42:28,200 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2020-12-09 17:42:28,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 17:42:28,201 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-09 17:42:28,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:42:28,201 INFO L225 Difference]: With dead ends: 50 [2020-12-09 17:42:28,201 INFO L226 Difference]: Without dead ends: 46 [2020-12-09 17:42:28,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 17:42:28,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-09 17:42:28,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-12-09 17:42:28,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-09 17:42:28,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-12-09 17:42:28,206 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 8 [2020-12-09 17:42:28,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:42:28,206 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-12-09 17:42:28,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 17:42:28,207 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-12-09 17:42:28,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 17:42:28,207 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:42:28,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:42:28,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 17:42:28,409 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:42:28,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:42:28,410 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2020-12-09 17:42:28,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 17:42:28,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1104629841] [2020-12-09 17:42:28,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 17:42:28,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:42:28,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 17:42:28,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:42:28,583 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 17:42:28,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 17:42:28,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1104629841] [2020-12-09 17:42:28,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:42:28,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 17:42:28,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298452196] [2020-12-09 17:42:28,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 17:42:28,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 17:42:28,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 17:42:28,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 17:42:28,584 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 4 states. [2020-12-09 17:42:29,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:42:29,127 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2020-12-09 17:42:29,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 17:42:29,128 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 17:42:29,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:42:29,128 INFO L225 Difference]: With dead ends: 50 [2020-12-09 17:42:29,128 INFO L226 Difference]: Without dead ends: 39 [2020-12-09 17:42:29,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 17:42:29,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-09 17:42:29,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-12-09 17:42:29,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-09 17:42:29,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-12-09 17:42:29,133 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 10 [2020-12-09 17:42:29,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:42:29,133 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-12-09 17:42:29,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 17:42:29,133 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-12-09 17:42:29,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 17:42:29,133 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:42:29,133 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:42:29,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 17:42:29,335 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:42:29,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:42:29,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1265507748, now seen corresponding path program 1 times [2020-12-09 17:42:29,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 17:42:29,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382089005] [2020-12-09 17:42:29,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-09 17:42:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:42:29,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 17:42:29,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:42:29,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:42:29,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:42:29,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 17:42:29,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382089005] [2020-12-09 17:42:29,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [40047760] [2020-12-09 17:42:29,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt [2020-12-09 17:42:29,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:42:29,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 17:42:29,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:42:29,801 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:42:29,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:42:29,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 17:42:29,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266314744] [2020-12-09 17:42:29,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:42:29,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:42:29,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 17:42:29,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:42:30,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:42:30,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:42:30,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:42:30,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 17:42:30,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5, 4, 6, 5] total 9 [2020-12-09 17:42:30,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129089056] [2020-12-09 17:42:30,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 17:42:30,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 17:42:30,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 17:42:30,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-12-09 17:42:30,098 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 9 states. [2020-12-09 17:42:30,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:42:30,864 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2020-12-09 17:42:30,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 17:42:30,866 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-12-09 17:42:30,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:42:30,866 INFO L225 Difference]: With dead ends: 58 [2020-12-09 17:42:30,866 INFO L226 Difference]: Without dead ends: 54 [2020-12-09 17:42:30,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 66 SyntacticMatches, 7 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-12-09 17:42:30,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-09 17:42:30,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 32. [2020-12-09 17:42:30,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-09 17:42:30,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-12-09 17:42:30,871 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 14 [2020-12-09 17:42:30,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:42:30,871 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-12-09 17:42:30,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 17:42:30,871 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-12-09 17:42:30,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 17:42:30,872 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:42:30,872 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:42:31,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt,6 mathsat -unsat_core_generation=3,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:42:31,474 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:42:31,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:42:31,476 INFO L82 PathProgramCache]: Analyzing trace with hash -677045505, now seen corresponding path program 1 times [2020-12-09 17:42:31,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 17:42:31,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [972455457] [2020-12-09 17:42:31,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-12-09 17:42:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:42:31,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 17:42:31,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:42:31,671 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:42:31,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:42:32,415 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-12-09 17:42:33,088 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 17:42:33,108 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:42:33,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [972455457] [2020-12-09 17:42:33,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1621407370] [2020-12-09 17:42:33,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt [2020-12-09 17:42:33,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:42:33,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 17:42:33,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:42:33,377 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:42:33,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:42:33,401 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:42:33,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697917463] [2020-12-09 17:42:33,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:42:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:42:33,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-09 17:42:33,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:42:33,704 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:42:33,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:42:34,553 WARN L197 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-12-09 17:42:34,564 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 17:42:34,565 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 17:42:37,508 WARN L197 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-12-09 17:42:44,477 WARN L197 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-12-09 17:42:53,554 WARN L197 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-12-09 17:42:53,562 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 17:42:53,562 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 17:42:56,151 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 2 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 17:42:56,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 17:42:56,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 8, 8] total 15 [2020-12-09 17:42:56,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300235728] [2020-12-09 17:42:56,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-09 17:42:56,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 17:42:56,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-09 17:42:56,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=135, Unknown=8, NotChecked=0, Total=210 [2020-12-09 17:42:56,154 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 15 states. [2020-12-09 17:43:07,213 WARN L197 SmtUtils]: Spent 8.78 s on a formula simplification that was a NOOP. DAG size: 35 [2020-12-09 17:43:22,134 WARN L197 SmtUtils]: Spent 9.18 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-09 17:43:36,872 WARN L197 SmtUtils]: Spent 9.16 s on a formula simplification that was a NOOP. DAG size: 34 [2020-12-09 17:44:01,814 WARN L197 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 17:44:29,455 WARN L197 SmtUtils]: Spent 12.44 s on a formula simplification that was a NOOP. DAG size: 31 [2020-12-09 17:44:42,725 WARN L197 SmtUtils]: Spent 8.44 s on a formula simplification that was a NOOP. DAG size: 32 [2020-12-09 17:45:00,180 WARN L197 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-12-09 17:45:20,028 WARN L197 SmtUtils]: Spent 8.45 s on a formula simplification that was a NOOP. DAG size: 28 [2020-12-09 17:45:33,915 WARN L197 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-12-09 17:45:53,252 WARN L197 SmtUtils]: Spent 10.48 s on a formula simplification that was a NOOP. DAG size: 32 [2020-12-09 17:45:59,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:45:59,621 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2020-12-09 17:45:59,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-09 17:45:59,629 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 16 [2020-12-09 17:45:59,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:45:59,629 INFO L225 Difference]: With dead ends: 75 [2020-12-09 17:45:59,629 INFO L226 Difference]: Without dead ends: 61 [2020-12-09 17:45:59,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 73 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 132.7s TimeCoverageRelationStatistics Valid=217, Invalid=409, Unknown=24, NotChecked=0, Total=650 [2020-12-09 17:45:59,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-09 17:45:59,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 36. [2020-12-09 17:45:59,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-09 17:45:59,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-12-09 17:45:59,636 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 16 [2020-12-09 17:45:59,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:45:59,636 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-12-09 17:45:59,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-09 17:45:59,636 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-12-09 17:45:59,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-09 17:45:59,637 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:45:59,637 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2020-12-09 17:46:00,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3,10 cvc4 --incremental --print-success --lang smt,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:46:00,241 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:46:00,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:46:00,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1706788820, now seen corresponding path program 1 times [2020-12-09 17:46:00,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 17:46:00,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715902870] [2020-12-09 17:46:00,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-12-09 17:46:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:46:00,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 17:46:00,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:46:00,600 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:46:00,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:46:01,452 WARN L197 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 17:46:02,649 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-09 17:46:02,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [715902870] [2020-12-09 17:46:02,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [625047694] [2020-12-09 17:46:02,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt [2020-12-09 17:46:03,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:46:03,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 17:46:03,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:46:03,122 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:46:03,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:46:04,471 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-09 17:46:04,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411176522] [2020-12-09 17:46:04,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:46:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:46:04,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-09 17:46:04,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:46:05,535 WARN L197 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 22 [2020-12-09 17:46:05,849 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2020-12-09 17:46:06,046 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 24 [2020-12-09 17:46:06,099 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:46:06,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:46:07,006 WARN L197 SmtUtils]: Spent 448.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-12-09 17:46:07,011 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 17:46:07,011 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 17:46:11,410 WARN L197 SmtUtils]: Spent 2.24 s on a formula simplification that was a NOOP. DAG size: 26 [2020-12-09 17:46:17,169 WARN L197 SmtUtils]: Spent 3.98 s on a formula simplification that was a NOOP. DAG size: 28 [2020-12-09 17:46:17,174 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 17:46:17,175 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 17:46:19,366 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ sign_extend 32) (_ bv1 32))) (.cse1 ((_ sign_extend 32) (_ bv2 32)))) (or (not (= c_ULTIMATE.start_main_~s~0 (bvadd (bvmul c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0) (bvmul .cse0 .cse0) (bvmul (_ bv2 64) (bvmul .cse0 c_ULTIMATE.start_main_~a~0))))) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) c_ULTIMATE.start_main_~s~0)) (bvmul c_ULTIMATE.start_main_~t~0 c_ULTIMATE.start_main_~t~0) (bvmul c_ULTIMATE.start_main_~t~0 .cse1) .cse0)) (not (= (bvadd .cse0 (bvmul c_ULTIMATE.start_main_~a~0 .cse1)) c_ULTIMATE.start_main_~t~0)))) is different from true [2020-12-09 17:46:19,384 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 17:46:19,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 5 imperfect interpolant sequences. [2020-12-09 17:46:19,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6, 4, 6, 4, 11] total 19 [2020-12-09 17:46:19,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724650113] [2020-12-09 17:46:19,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 17:46:19,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 17:46:19,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 17:46:19,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=209, Unknown=1, NotChecked=32, Total=342 [2020-12-09 17:46:19,386 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 8 states. [2020-12-09 17:46:21,097 WARN L197 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 20 [2020-12-09 17:46:41,078 WARN L197 SmtUtils]: Spent 9.37 s on a formula simplification that was a NOOP. DAG size: 34 [2020-12-09 17:46:47,376 WARN L197 SmtUtils]: Spent 4.42 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-09 17:46:51,836 WARN L197 SmtUtils]: Spent 3.06 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-09 17:46:56,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:46:56,900 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2020-12-09 17:46:56,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 17:46:56,900 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-12-09 17:46:56,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:46:56,901 INFO L225 Difference]: With dead ends: 44 [2020-12-09 17:46:56,901 INFO L226 Difference]: Without dead ends: 34 [2020-12-09 17:46:56,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 124 SyntacticMatches, 10 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 44.9s TimeCoverageRelationStatistics Valid=147, Invalid=316, Unknown=3, NotChecked=40, Total=506 [2020-12-09 17:46:56,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-09 17:46:56,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2020-12-09 17:46:56,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 17:46:56,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2020-12-09 17:46:56,906 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2020-12-09 17:46:56,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:46:56,906 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2020-12-09 17:46:56,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 17:46:56,906 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-12-09 17:46:56,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-09 17:46:56,906 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:46:56,907 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:46:57,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 cvc4 --incremental --print-success --lang smt,12 mathsat -unsat_core_generation=3 [2020-12-09 17:46:57,510 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:46:57,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:46:57,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1772370605, now seen corresponding path program 1 times [2020-12-09 17:46:57,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 17:46:57,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1637941888] [2020-12-09 17:46:57,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2020-12-09 17:46:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:46:57,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 17:46:57,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:46:57,840 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:46:57,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:46:57,955 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:46:57,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1637941888] [2020-12-09 17:46:57,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [280736198] [2020-12-09 17:46:57,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan/cvc4 Starting monitored process 16 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with cvc4 --incremental --print-success --lang smt [2020-12-09 17:46:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:46:58,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 17:46:58,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:46:58,387 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:46:58,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:46:58,404 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:46:58,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033593640] [2020-12-09 17:46:58,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3561d86-e040-4537-a5ac-f03c899f7422/bin/utaipan/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:46:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:46:58,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-09 17:46:58,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:47:00,177 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:47:00,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:47:02,400 WARN L197 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 17:47:04,188 WARN L197 SmtUtils]: Spent 552.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-12-09 17:47:04,192 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 17:47:04,193 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 17:47:12,169 WARN L197 SmtUtils]: Spent 3.23 s on a formula simplification that was a NOOP. DAG size: 26 [2020-12-09 17:47:20,864 WARN L197 SmtUtils]: Spent 3.71 s on a formula simplification that was a NOOP. DAG size: 28 [2020-12-09 17:47:20,869 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 17:47:20,870 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 17:47:23,106 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ sign_extend 32) (_ bv1 32))) (.cse1 ((_ sign_extend 32) (_ bv2 32)))) (or (not (= c_ULTIMATE.start_main_~s~0 (bvadd (bvmul c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0) (bvmul .cse0 .cse0) (bvmul (_ bv2 64) (bvmul .cse0 c_ULTIMATE.start_main_~a~0))))) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) c_ULTIMATE.start_main_~s~0)) (bvmul c_ULTIMATE.start_main_~t~0 c_ULTIMATE.start_main_~t~0) (bvmul c_ULTIMATE.start_main_~t~0 .cse1) .cse0)) (not (= (bvadd .cse0 (bvmul c_ULTIMATE.start_main_~a~0 .cse1)) c_ULTIMATE.start_main_~t~0)))) is different from true [2020-12-09 17:47:23,128 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 17:47:23,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 5 imperfect interpolant sequences. [2020-12-09 17:47:23,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5, 5, 5, 5, 11] total 25 [2020-12-09 17:47:23,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878448368] [2020-12-09 17:47:23,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 17:47:23,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 17:47:23,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 17:47:23,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=445, Unknown=1, NotChecked=44, Total=600 [2020-12-09 17:47:23,129 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 8 states. [2020-12-09 17:47:25,559 WARN L197 SmtUtils]: Spent 936.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-12-09 17:47:45,917 WARN L197 SmtUtils]: Spent 10.05 s on a formula simplification that was a NOOP. DAG size: 34 [2020-12-09 17:47:54,327 WARN L197 SmtUtils]: Spent 4.19 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-09 17:48:03,891 WARN L197 SmtUtils]: Spent 3.74 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-09 17:48:04,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:48:04,835 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-12-09 17:48:04,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 17:48:04,842 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-12-09 17:48:04,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:48:04,842 INFO L225 Difference]: With dead ends: 28 [2020-12-09 17:48:04,842 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 17:48:04,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 132 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 58.5s TimeCoverageRelationStatistics Valid=155, Invalid=602, Unknown=3, NotChecked=52, Total=812 [2020-12-09 17:48:04,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 17:48:04,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 17:48:04,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 17:48:04,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 17:48:04,843 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2020-12-09 17:48:04,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:48:04,844 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 17:48:04,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 17:48:04,844 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 17:48:04,844 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 17:48:05,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 cvc4 --incremental --print-success --lang smt,15 mathsat -unsat_core_generation=3,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:48:05,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 17:48:44,332 WARN L197 SmtUtils]: Spent 38.74 s on a formula simplification. DAG size of input: 72 DAG size of output: 37 [2020-12-09 17:49:13,433 WARN L197 SmtUtils]: Spent 29.10 s on a formula simplification. DAG size of input: 74 DAG size of output: 38 [2020-12-09 17:49:35,293 WARN L197 SmtUtils]: Spent 21.86 s on a formula simplification. DAG size of input: 70 DAG size of output: 39 [2020-12-09 17:50:09,720 WARN L197 SmtUtils]: Spent 34.43 s on a formula simplification. DAG size of input: 69 DAG size of output: 35 [2020-12-09 17:50:31,475 WARN L197 SmtUtils]: Spent 21.75 s on a formula simplification. DAG size of input: 69 DAG size of output: 37 [2020-12-09 17:51:06,461 WARN L197 SmtUtils]: Spent 34.99 s on a formula simplification. DAG size of input: 69 DAG size of output: 35 [2020-12-09 17:51:06,463 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 17:51:06,463 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 17:51:06,463 INFO L265 CegarLoopResult]: At program point L48(lines 21 49) the Hoare annotation is: true [2020-12-09 17:51:06,463 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 17:51:06,463 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 17:51:06,463 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 17:51:06,463 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 17:51:06,463 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 17:51:06,464 INFO L262 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-12-09 17:51:06,464 INFO L258 CegarLoopResult]: At program point L12-2(lines 11 17) the Hoare annotation is: (let ((.cse2 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse1 (bvmul ULTIMATE.start_main_~a~0 .cse2)) (.cse0 ((_ sign_extend 32) (_ bv1 32)))) (and (= (bvadd .cse0 .cse1) ULTIMATE.start_main_~t~0) (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul (bvmul .cse0 .cse0) (_ bv4 64)) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv4 64))) (bvadd .cse0 ULTIMATE.start_main_~s~0 (bvmul .cse0 .cse2) .cse1)) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse2) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0)))))) [2020-12-09 17:51:06,464 INFO L262 CegarLoopResult]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2020-12-09 17:51:06,464 INFO L258 CegarLoopResult]: At program point L12-5(lines 11 17) the Hoare annotation is: (let ((.cse2 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse1 (bvmul ULTIMATE.start_main_~a~0 .cse2)) (.cse0 ((_ sign_extend 32) (_ bv1 32)))) (and (= (bvadd .cse0 .cse1) ULTIMATE.start_main_~t~0) (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul (bvmul .cse0 .cse0) (_ bv4 64)) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv4 64))) (bvadd .cse0 ULTIMATE.start_main_~s~0 (bvmul .cse0 .cse2) .cse1)) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse2) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0)))))) [2020-12-09 17:51:06,464 INFO L262 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-12-09 17:51:06,464 INFO L258 CegarLoopResult]: At program point L12-8(lines 36 37) the Hoare annotation is: (let ((.cse2 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse1 (bvmul ULTIMATE.start_main_~a~0 .cse2)) (.cse0 ((_ sign_extend 32) (_ bv1 32)))) (and (= (bvadd .cse0 .cse1) ULTIMATE.start_main_~t~0) (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul (bvmul .cse0 .cse0) (_ bv4 64)) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv4 64))) (bvadd .cse0 ULTIMATE.start_main_~s~0 (bvmul .cse0 .cse2) .cse1)) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse2) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0)))))) [2020-12-09 17:51:06,464 INFO L262 CegarLoopResult]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2020-12-09 17:51:06,464 INFO L258 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: (let ((.cse1 ((_ sign_extend 32) (_ bv0 32))) (.cse0 ((_ sign_extend 32) (_ bv1 32)))) (or (and (= ULTIMATE.start_main_~s~0 .cse0) (= .cse1 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~t~0 .cse0)) (let ((.cse2 ((_ sign_extend 32) (_ bv2 32)))) (and (= (bvadd .cse0 (bvmul ULTIMATE.start_main_~a~0 .cse2)) ULTIMATE.start_main_~t~0) (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= .cse1 (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse2) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0))) (= ULTIMATE.start_main_~s~0 (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul .cse0 .cse0) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv2 64)))))))) [2020-12-09 17:51:06,464 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 17:51:06,464 INFO L262 CegarLoopResult]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2020-12-09 17:51:06,464 INFO L258 CegarLoopResult]: At program point L12-14(lines 11 17) the Hoare annotation is: (let ((.cse0 ((_ sign_extend 32) (_ bv1 32)))) (or (and (= ULTIMATE.start_main_~s~0 .cse0) (= ULTIMATE.start_main_~t~0 .cse0)) (let ((.cse1 ((_ sign_extend 32) (_ bv2 32)))) (and (= (bvadd .cse0 (bvmul ULTIMATE.start_main_~a~0 .cse1)) ULTIMATE.start_main_~t~0) (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse1) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0))) (= ULTIMATE.start_main_~s~0 (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul .cse0 .cse0) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv2 64)))))))) [2020-12-09 17:51:06,465 INFO L262 CegarLoopResult]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2020-12-09 17:51:06,465 INFO L265 CegarLoopResult]: At program point L12-17(lines 11 17) the Hoare annotation is: true [2020-12-09 17:51:06,465 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 17:51:06,465 INFO L262 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-12-09 17:51:06,465 INFO L262 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-12-09 17:51:06,465 INFO L262 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-12-09 17:51:06,465 INFO L262 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-12-09 17:51:06,465 INFO L262 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-12-09 17:51:06,465 INFO L262 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-12-09 17:51:06,465 INFO L262 CegarLoopResult]: For program point L30-1(lines 30 42) no Hoare annotation was computed. [2020-12-09 17:51:06,465 INFO L258 CegarLoopResult]: At program point L30-3(lines 30 42) the Hoare annotation is: (let ((.cse1 ((_ sign_extend 32) (_ bv0 32))) (.cse0 ((_ sign_extend 32) (_ bv1 32)))) (or (and (= ULTIMATE.start_main_~s~0 .cse0) (= .cse1 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~t~0 .cse0)) (let ((.cse2 ((_ sign_extend 32) (_ bv2 32)))) (and (= (bvadd .cse0 (bvmul ULTIMATE.start_main_~a~0 .cse2)) ULTIMATE.start_main_~t~0) (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= .cse1 (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse2) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0))) (= ULTIMATE.start_main_~s~0 (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul .cse0 .cse0) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv2 64)))))))) [2020-12-09 17:51:06,465 INFO L262 CegarLoopResult]: For program point L30-4(lines 30 42) no Hoare annotation was computed. [2020-12-09 17:51:06,465 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 17:51:06,470 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) 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.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 17:51:06,472 INFO L168 Benchmark]: Toolchain (without parser) took 520706.39 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 27.8 MB in the beginning and 37.5 MB in the end (delta: -9.6 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. [2020-12-09 17:51:06,473 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 50.3 MB. Free memory was 32.8 MB in the beginning and 32.8 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 17:51:06,474 INFO L168 Benchmark]: CACSL2BoogieTranslator took 170.43 ms. Allocated memory is still 50.3 MB. Free memory was 27.7 MB in the beginning and 28.9 MB in the end (delta: -1.1 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-12-09 17:51:06,474 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.71 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 28.9 MB in the beginning and 47.1 MB in the end (delta: -18.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 17:51:06,475 INFO L168 Benchmark]: Boogie Preprocessor took 24.68 ms. Allocated memory is still 62.9 MB. Free memory was 47.1 MB in the beginning and 45.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 17:51:06,475 INFO L168 Benchmark]: RCFGBuilder took 604.58 ms. Allocated memory is still 62.9 MB. Free memory was 45.6 MB in the beginning and 30.7 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 17:51:06,476 INFO L168 Benchmark]: TraceAbstraction took 519866.80 ms. Allocated memory is still 62.9 MB. Free memory was 30.4 MB in the beginning and 37.5 MB in the end (delta: -7.0 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2020-12-09 17:51:06,478 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 50.3 MB. Free memory was 32.8 MB in the beginning and 32.8 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 170.43 ms. Allocated memory is still 50.3 MB. Free memory was 27.7 MB in the beginning and 28.9 MB in the end (delta: -1.1 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.71 ms. Allocated memory was 50.3 MB in the beginning and 62.9 MB in the end (delta: 12.6 MB). Free memory was 28.9 MB in the beginning and 47.1 MB in the end (delta: -18.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.68 ms. Allocated memory is still 62.9 MB. Free memory was 47.1 MB in the beginning and 45.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 604.58 ms. Allocated memory is still 62.9 MB. Free memory was 45.6 MB in the beginning and 30.7 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 519866.80 ms. Allocated memory is still 62.9 MB. Free memory was 30.4 MB in the beginning and 37.5 MB in the end (delta: -7.0 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) 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...