./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound2.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_8f07e56a-52f6-47cc-8997-91d10fd4d73b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8f07e56a-52f6-47cc-8997-91d10fd4d73b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8f07e56a-52f6-47cc-8997-91d10fd4d73b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8f07e56a-52f6-47cc-8997-91d10fd4d73b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8f07e56a-52f6-47cc-8997-91d10fd4d73b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8f07e56a-52f6-47cc-8997-91d10fd4d73b/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 ab746bf4a089e72e80f9c298a9407c6c1a5ad2bd ........................................................................................................................................................................................................................................................................................................................................................................................................ 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_8f07e56a-52f6-47cc-8997-91d10fd4d73b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8f07e56a-52f6-47cc-8997-91d10fd4d73b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8f07e56a-52f6-47cc-8997-91d10fd4d73b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8f07e56a-52f6-47cc-8997-91d10fd4d73b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8f07e56a-52f6-47cc-8997-91d10fd4d73b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8f07e56a-52f6-47cc-8997-91d10fd4d73b/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 ab746bf4a089e72e80f9c298a9407c6c1a5ad2bd ...................................................................................................................................................................................................................................................................................................................................................................................... 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 11:15:02,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 11:15:02,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 11:15:02,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 11:15:02,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 11:15:02,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 11:15:02,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 11:15:02,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 11:15:02,637 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 11:15:02,638 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 11:15:02,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 11:15:02,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 11:15:02,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 11:15:02,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 11:15:02,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 11:15:02,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 11:15:02,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 11:15:02,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 11:15:02,646 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 11:15:02,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 11:15:02,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 11:15:02,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 11:15:02,652 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 11:15:02,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 11:15:02,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 11:15:02,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 11:15:02,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 11:15:02,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 11:15:02,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 11:15:02,657 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 11:15:02,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 11:15:02,658 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 11:15:02,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 11:15:02,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 11:15:02,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 11:15:02,661 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 11:15:02,662 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 11:15:02,662 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 11:15:02,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 11:15:02,663 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 11:15:02,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 11:15:02,664 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8f07e56a-52f6-47cc-8997-91d10fd4d73b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 11:15:02,681 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 11:15:02,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 11:15:02,682 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 11:15:02,682 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 11:15:02,682 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 11:15:02,682 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 11:15:02,682 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 11:15:02,682 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 11:15:02,683 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 11:15:02,683 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 11:15:02,683 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 11:15:02,683 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 11:15:02,683 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 11:15:02,683 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 11:15:02,683 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 11:15:02,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 11:15:02,684 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 11:15:02,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 11:15:02,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 11:15:02,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 11:15:02,684 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 11:15:02,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 11:15:02,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 11:15:02,685 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 11:15:02,685 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 11:15:02,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 11:15:02,685 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 11:15:02,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 11:15:02,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 11:15:02,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 11:15:02,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 11:15:02,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 11:15:02,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 11:15:02,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 11:15:02,686 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 11:15:02,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 11:15:02,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 11:15:02,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 11:15:02,687 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 11:15:02,687 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_8f07e56a-52f6-47cc-8997-91d10fd4d73b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8f07e56a-52f6-47cc-8997-91d10fd4d73b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ab746bf4a089e72e80f9c298a9407c6c1a5ad2bd [2020-12-09 11:15:02,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 11:15:02,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 11:15:02,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 11:15:02,877 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 11:15:02,877 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 11:15:02,878 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8f07e56a-52f6-47cc-8997-91d10fd4d73b/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound2.c [2020-12-09 11:15:02,922 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8f07e56a-52f6-47cc-8997-91d10fd4d73b/bin/utaipan/data/011230494/b0eff9adce8c4e948807df7ce9c55adb/FLAG95cf974f1 [2020-12-09 11:15:03,279 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 11:15:03,279 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8f07e56a-52f6-47cc-8997-91d10fd4d73b/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound2.c [2020-12-09 11:15:03,284 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8f07e56a-52f6-47cc-8997-91d10fd4d73b/bin/utaipan/data/011230494/b0eff9adce8c4e948807df7ce9c55adb/FLAG95cf974f1 [2020-12-09 11:15:03,297 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8f07e56a-52f6-47cc-8997-91d10fd4d73b/bin/utaipan/data/011230494/b0eff9adce8c4e948807df7ce9c55adb [2020-12-09 11:15:03,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 11:15:03,300 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 11:15:03,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 11:15:03,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 11:15:03,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 11:15:03,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:15:03" (1/1) ... [2020-12-09 11:15:03,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63f60dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:15:03, skipping insertion in model container [2020-12-09 11:15:03,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:15:03" (1/1) ... [2020-12-09 11:15:03,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 11:15:03,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 11:15:03,424 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_8f07e56a-52f6-47cc-8997-91d10fd4d73b/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound2.c[458,471] [2020-12-09 11:15:03,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 11:15:03,439 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 11:15:03,448 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_8f07e56a-52f6-47cc-8997-91d10fd4d73b/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound2.c[458,471] [2020-12-09 11:15:03,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 11:15:03,462 INFO L208 MainTranslator]: Completed translation [2020-12-09 11:15:03,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:15:03 WrapperNode [2020-12-09 11:15:03,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 11:15:03,463 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 11:15:03,463 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 11:15:03,463 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 11:15:03,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:15:03" (1/1) ... [2020-12-09 11:15:03,473 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:15:03" (1/1) ... [2020-12-09 11:15:03,486 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 11:15:03,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 11:15:03,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 11:15:03,487 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 11:15:03,493 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:15:03" (1/1) ... [2020-12-09 11:15:03,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:15:03" (1/1) ... [2020-12-09 11:15:03,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:15:03" (1/1) ... [2020-12-09 11:15:03,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:15:03" (1/1) ... [2020-12-09 11:15:03,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:15:03" (1/1) ... [2020-12-09 11:15:03,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:15:03" (1/1) ... [2020-12-09 11:15:03,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:15:03" (1/1) ... [2020-12-09 11:15:03,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 11:15:03,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 11:15:03,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 11:15:03,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 11:15:03,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:15:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f07e56a-52f6-47cc-8997-91d10fd4d73b/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 11:15:03,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 11:15:03,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 11:15:03,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 11:15:03,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 11:15:03,713 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 11:15:03,713 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-09 11:15:03,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:15:03 BoogieIcfgContainer [2020-12-09 11:15:03,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 11:15:03,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 11:15:03,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 11:15:03,719 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 11:15:03,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 11:15:03" (1/3) ... [2020-12-09 11:15:03,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79abc52a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:15:03, skipping insertion in model container [2020-12-09 11:15:03,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:15:03" (2/3) ... [2020-12-09 11:15:03,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79abc52a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:15:03, skipping insertion in model container [2020-12-09 11:15:03,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:15:03" (3/3) ... [2020-12-09 11:15:03,721 INFO L111 eAbstractionObserver]: Analyzing ICFG ps3-ll_unwindbound2.c [2020-12-09 11:15:03,731 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 11:15:03,733 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-09 11:15:03,741 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-09 11:15:03,757 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 11:15:03,757 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 11:15:03,757 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 11:15:03,757 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 11:15:03,757 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 11:15:03,757 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 11:15:03,758 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 11:15:03,758 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 11:15:03,766 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-12-09 11:15:03,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 11:15:03,773 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:15:03,773 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 11:15:03,774 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:15:03,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:15:03,778 INFO L82 PathProgramCache]: Analyzing trace with hash 71331668, now seen corresponding path program 1 times [2020-12-09 11:15:03,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:15:03,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212260604] [2020-12-09 11:15:03,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:15:03,879 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 11:15:03,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [496399983] [2020-12-09 11:15:03,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f07e56a-52f6-47cc-8997-91d10fd4d73b/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 11:15:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:15:03,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 11:15:03,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:15:03,986 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 11:15:03,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 11:15:04,023 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 11:15:04,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212260604] [2020-12-09 11:15:04,024 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 11:15:04,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496399983] [2020-12-09 11:15:04,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:15:04,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 11:15:04,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766469570] [2020-12-09 11:15:04,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 11:15:04,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:15:04,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 11:15:04,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 11:15:04,042 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 6 states. [2020-12-09 11:15:17,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:15:17,021 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2020-12-09 11:15:17,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 11:15:17,022 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2020-12-09 11:15:17,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:15:17,027 INFO L225 Difference]: With dead ends: 45 [2020-12-09 11:15:17,028 INFO L226 Difference]: Without dead ends: 22 [2020-12-09 11:15:17,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-09 11:15:17,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-09 11:15:17,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2020-12-09 11:15:17,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-09 11:15:17,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-12-09 11:15:17,057 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 5 [2020-12-09 11:15:17,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:15:17,057 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-12-09 11:15:17,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 11:15:17,057 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-12-09 11:15:17,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 11:15:17,058 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:15:17,058 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1] [2020-12-09 11:15:17,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-12-09 11:15:17,260 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:15:17,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:15:17,263 INFO L82 PathProgramCache]: Analyzing trace with hash 478489772, now seen corresponding path program 1 times [2020-12-09 11:15:17,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:15:17,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627048984] [2020-12-09 11:15:17,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:15:17,301 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 11:15:17,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [169341362] [2020-12-09 11:15:17,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f07e56a-52f6-47cc-8997-91d10fd4d73b/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 11:15:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:15:17,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 11:15:17,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:15:17,390 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:15:17,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 11:15:17,410 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:15:17,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627048984] [2020-12-09 11:15:17,411 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 11:15:17,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169341362] [2020-12-09 11:15:17,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [619039730] [2020-12-09 11:15:17,426 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-12-09 11:15:17,426 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 11:15:17,429 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 11:15:17,433 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 11:15:17,433 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 11:15:17,673 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 11:15:19,786 WARN L197 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-12-09 11:15:22,128 WARN L197 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2020-12-09 11:15:22,129 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 11:15:22,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 11:15:22,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-12-09 11:15:22,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317366384] [2020-12-09 11:15:22,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 11:15:22,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:15:22,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 11:15:22,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-12-09 11:15:22,131 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 6 states. [2020-12-09 11:15:22,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:15:22,154 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-12-09 11:15:22,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 11:15:22,154 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-09 11:15:22,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:15:22,155 INFO L225 Difference]: With dead ends: 25 [2020-12-09 11:15:22,155 INFO L226 Difference]: Without dead ends: 15 [2020-12-09 11:15:22,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-12-09 11:15:22,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-09 11:15:22,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-12-09 11:15:22,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-09 11:15:22,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-12-09 11:15:22,158 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 13 [2020-12-09 11:15:22,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:15:22,158 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-12-09 11:15:22,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 11:15:22,159 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-12-09 11:15:22,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 11:15:22,159 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:15:22,159 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2020-12-09 11:15:22,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 11:15:22,361 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:15:22,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:15:22,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1948237401, now seen corresponding path program 1 times [2020-12-09 11:15:22,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:15:22,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607967357] [2020-12-09 11:15:22,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:15:22,373 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 11:15:22,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [977916237] [2020-12-09 11:15:22,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f07e56a-52f6-47cc-8997-91d10fd4d73b/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 11:15:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:15:22,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-09 11:15:22,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:15:22,518 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:15:22,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 11:15:22,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607967357] [2020-12-09 11:15:22,539 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 11:15:22,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977916237] [2020-12-09 11:15:22,540 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-09 11:15:22,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [36095847] [2020-12-09 11:15:22,542 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 11:15:22,542 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 11:15:22,542 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 11:15:22,542 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 11:15:22,542 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 11:15:22,758 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 11:15:25,035 WARN L197 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 55 [2020-12-09 11:15:25,161 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2020-12-09 11:15:25,249 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 11:15:25,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:15:25,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-09 11:15:25,249 ERROR L205 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2020-12-09 11:15:25,249 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 11:15:25,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-09 11:15:25,489 WARN L254 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-09 11:15:25,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 11:15:25 BoogieIcfgContainer [2020-12-09 11:15:25,490 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 11:15:25,490 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 11:15:25,491 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 11:15:25,491 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 11:15:25,492 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:15:03" (3/4) ... [2020-12-09 11:15:25,495 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 11:15:25,495 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 11:15:25,497 INFO L168 Benchmark]: Toolchain (without parser) took 22195.74 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 40.8 MB in the beginning and 35.7 MB in the end (delta: 5.1 MB). Peak memory consumption was 22.3 MB. Max. memory is 16.1 GB. [2020-12-09 11:15:25,498 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 75.5 MB. Free memory was 47.0 MB in the beginning and 47.0 MB in the end (delta: 26.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 11:15:25,499 INFO L168 Benchmark]: CACSL2BoogieTranslator took 160.54 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 40.6 MB in the beginning and 67.8 MB in the end (delta: -27.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-12-09 11:15:25,500 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.56 ms. Allocated memory is still 92.3 MB. Free memory was 67.8 MB in the beginning and 66.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 11:15:25,500 INFO L168 Benchmark]: Boogie Preprocessor took 14.24 ms. Allocated memory is still 92.3 MB. Free memory was 66.2 MB in the beginning and 65.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 11:15:25,501 INFO L168 Benchmark]: RCFGBuilder took 213.36 ms. Allocated memory is still 92.3 MB. Free memory was 65.1 MB in the beginning and 51.5 MB in the end (delta: 13.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 11:15:25,502 INFO L168 Benchmark]: TraceAbstraction took 21773.58 ms. Allocated memory is still 92.3 MB. Free memory was 51.0 MB in the beginning and 35.7 MB in the end (delta: 15.3 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. [2020-12-09 11:15:25,502 INFO L168 Benchmark]: Witness Printer took 5.12 ms. Allocated memory is still 92.3 MB. Free memory is still 35.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 11:15:25,506 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 75.5 MB. Free memory was 47.0 MB in the beginning and 47.0 MB in the end (delta: 26.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 160.54 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 40.6 MB in the beginning and 67.8 MB in the end (delta: -27.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 23.56 ms. Allocated memory is still 92.3 MB. Free memory was 67.8 MB in the beginning and 66.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 14.24 ms. Allocated memory is still 92.3 MB. Free memory was 66.2 MB in the beginning and 65.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 213.36 ms. Allocated memory is still 92.3 MB. Free memory was 65.1 MB in the beginning and 51.5 MB in the end (delta: 13.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 21773.58 ms. Allocated memory is still 92.3 MB. Free memory was 51.0 MB in the beginning and 35.7 MB in the end (delta: 15.3 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.12 ms. Allocated memory is still 92.3 MB. Free memory is still 35.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: 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: [L17] int counter = 0; [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L23] y = 0 [L24] x = 0 [L25] c = 0 [L27] EXPR counter++ [L27] COND TRUE counter++<2 [L10] COND FALSE !(!(cond)) [L30] COND FALSE !(!(c < k)) [L33] c = c + 1 [L34] y = y + 1 [L35] x = y * y + x [L27] EXPR counter++ [L27] COND TRUE counter++<2 [L10] COND FALSE !(!(cond)) [L30] COND FALSE !(!(c < k)) [L33] c = c + 1 [L34] y = y + 1 [L35] x = y * y + x [L27] EXPR counter++ [L27] COND FALSE !(counter++<2) [L10] COND TRUE !(cond) [L12] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 21.6s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 13.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 50 SDslu, 38 SDs, 0 SdLazy, 34 SolverSat, 19 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 12.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=1, 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, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 996 SizeOfPredicates, 5 NumberOfNonLiveVariables, 140 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 16/20 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 11:15:27,087 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 11:15:27,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 11:15:27,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 11:15:27,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 11:15:27,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 11:15:27,113 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 11:15:27,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 11:15:27,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 11:15:27,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 11:15:27,118 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 11:15:27,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 11:15:27,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 11:15:27,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 11:15:27,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 11:15:27,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 11:15:27,123 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 11:15:27,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 11:15:27,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 11:15:27,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 11:15:27,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 11:15:27,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 11:15:27,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 11:15:27,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 11:15:27,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 11:15:27,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 11:15:27,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 11:15:27,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 11:15:27,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 11:15:27,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 11:15:27,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 11:15:27,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 11:15:27,137 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 11:15:27,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 11:15:27,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 11:15:27,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 11:15:27,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 11:15:27,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 11:15:27,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 11:15:27,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 11:15:27,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 11:15:27,142 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8f07e56a-52f6-47cc-8997-91d10fd4d73b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 11:15:27,165 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 11:15:27,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 11:15:27,166 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 11:15:27,166 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 11:15:27,167 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 11:15:27,167 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 11:15:27,167 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 11:15:27,167 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 11:15:27,167 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 11:15:27,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 11:15:27,168 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 11:15:27,168 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 11:15:27,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 11:15:27,168 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 11:15:27,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 11:15:27,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 11:15:27,168 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 11:15:27,169 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 11:15:27,169 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 11:15:27,169 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 11:15:27,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 11:15:27,169 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 11:15:27,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 11:15:27,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 11:15:27,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 11:15:27,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 11:15:27,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 11:15:27,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 11:15:27,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 11:15:27,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 11:15:27,170 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 11:15:27,170 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 11:15:27,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 11:15:27,171 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 11:15:27,171 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 11:15:27,171 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_8f07e56a-52f6-47cc-8997-91d10fd4d73b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8f07e56a-52f6-47cc-8997-91d10fd4d73b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ab746bf4a089e72e80f9c298a9407c6c1a5ad2bd [2020-12-09 11:15:27,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 11:15:27,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 11:15:27,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 11:15:27,405 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 11:15:27,406 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 11:15:27,407 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8f07e56a-52f6-47cc-8997-91d10fd4d73b/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound2.c [2020-12-09 11:15:27,447 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8f07e56a-52f6-47cc-8997-91d10fd4d73b/bin/utaipan/data/6860133d0/31a201e113f542d89cb762ecf79e3999/FLAG0354bc4c5 [2020-12-09 11:15:27,886 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 11:15:27,887 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8f07e56a-52f6-47cc-8997-91d10fd4d73b/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound2.c [2020-12-09 11:15:27,891 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8f07e56a-52f6-47cc-8997-91d10fd4d73b/bin/utaipan/data/6860133d0/31a201e113f542d89cb762ecf79e3999/FLAG0354bc4c5 [2020-12-09 11:15:27,901 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8f07e56a-52f6-47cc-8997-91d10fd4d73b/bin/utaipan/data/6860133d0/31a201e113f542d89cb762ecf79e3999 [2020-12-09 11:15:27,903 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 11:15:27,904 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 11:15:27,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 11:15:27,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 11:15:27,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 11:15:27,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:15:27" (1/1) ... [2020-12-09 11:15:27,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@676020a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:15:27, skipping insertion in model container [2020-12-09 11:15:27,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:15:27" (1/1) ... [2020-12-09 11:15:27,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 11:15:27,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 11:15:28,016 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_8f07e56a-52f6-47cc-8997-91d10fd4d73b/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound2.c[458,471] [2020-12-09 11:15:28,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 11:15:28,035 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 11:15:28,044 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_8f07e56a-52f6-47cc-8997-91d10fd4d73b/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound2.c[458,471] [2020-12-09 11:15:28,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 11:15:28,065 INFO L208 MainTranslator]: Completed translation [2020-12-09 11:15:28,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:15:28 WrapperNode [2020-12-09 11:15:28,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 11:15:28,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 11:15:28,068 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 11:15:28,068 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 11:15:28,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:15:28" (1/1) ... [2020-12-09 11:15:28,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:15:28" (1/1) ... [2020-12-09 11:15:28,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 11:15:28,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 11:15:28,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 11:15:28,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 11:15:28,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:15:28" (1/1) ... [2020-12-09 11:15:28,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:15:28" (1/1) ... [2020-12-09 11:15:28,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:15:28" (1/1) ... [2020-12-09 11:15:28,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:15:28" (1/1) ... [2020-12-09 11:15:28,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:15:28" (1/1) ... [2020-12-09 11:15:28,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:15:28" (1/1) ... [2020-12-09 11:15:28,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:15:28" (1/1) ... [2020-12-09 11:15:28,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 11:15:28,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 11:15:28,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 11:15:28,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 11:15:28,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:15:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f07e56a-52f6-47cc-8997-91d10fd4d73b/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 11:15:28,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 11:15:28,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 11:15:28,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 11:15:28,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 11:15:28,715 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 11:15:28,715 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-09 11:15:28,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:15:28 BoogieIcfgContainer [2020-12-09 11:15:28,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 11:15:28,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 11:15:28,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 11:15:28,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 11:15:28,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 11:15:27" (1/3) ... [2020-12-09 11:15:28,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@312beeba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:15:28, skipping insertion in model container [2020-12-09 11:15:28,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:15:28" (2/3) ... [2020-12-09 11:15:28,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@312beeba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:15:28, skipping insertion in model container [2020-12-09 11:15:28,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:15:28" (3/3) ... [2020-12-09 11:15:28,722 INFO L111 eAbstractionObserver]: Analyzing ICFG ps3-ll_unwindbound2.c [2020-12-09 11:15:28,735 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 11:15:28,738 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-09 11:15:28,745 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-09 11:15:28,761 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 11:15:28,761 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 11:15:28,761 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 11:15:28,761 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 11:15:28,761 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 11:15:28,762 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 11:15:28,762 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 11:15:28,762 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 11:15:28,770 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-12-09 11:15:28,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 11:15:28,773 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:15:28,773 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 11:15:28,774 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:15:28,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:15:28,777 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-09 11:15:28,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 11:15:28,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631300258] [2020-12-09 11:15:28,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f07e56a-52f6-47cc-8997-91d10fd4d73b/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 11:15:28,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:15:28,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 11:15:28,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:15:28,998 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 11:15:28,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 11:15:28,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631300258] [2020-12-09 11:15:28,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:15:28,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 11:15:28,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151978829] [2020-12-09 11:15:29,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 11:15:29,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 11:15:29,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 11:15:29,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 11:15:29,013 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-12-09 11:15:29,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:15:29,610 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2020-12-09 11:15:29,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 11:15:29,612 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-09 11:15:29,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:15:29,617 INFO L225 Difference]: With dead ends: 44 [2020-12-09 11:15:29,618 INFO L226 Difference]: Without dead ends: 19 [2020-12-09 11:15:29,620 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 11:15:29,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-09 11:15:29,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2020-12-09 11:15:29,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-09 11:15:29,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-12-09 11:15:29,642 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 6 [2020-12-09 11:15:29,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:15:29,642 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-12-09 11:15:29,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 11:15:29,642 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-12-09 11:15:29,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 11:15:29,643 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:15:29,643 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2020-12-09 11:15:29,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 11:15:29,845 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:15:29,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:15:29,848 INFO L82 PathProgramCache]: Analyzing trace with hash 855725686, now seen corresponding path program 1 times [2020-12-09 11:15:29,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 11:15:29,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582722206] [2020-12-09 11:15:29,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f07e56a-52f6-47cc-8997-91d10fd4d73b/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 11:15:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:15:30,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 11:15:30,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:15:30,330 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 11:15:30,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 11:15:31,599 WARN L197 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-12-09 11:15:32,255 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 11:15:32,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582722206] [2020-12-09 11:15:32,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1337511661] [2020-12-09 11:15:32,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f07e56a-52f6-47cc-8997-91d10fd4d73b/bin/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt [2020-12-09 11:15:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:15:32,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 11:15:32,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:15:32,618 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 11:15:32,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 11:15:33,791 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 11:15:33,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124360334] [2020-12-09 11:15:33,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f07e56a-52f6-47cc-8997-91d10fd4d73b/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 11:15:34,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:15:34,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 11:15:34,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:15:34,535 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 11 [2020-12-09 11:15:34,584 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 11:15:34,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 11:15:36,963 WARN L197 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-12-09 11:15:36,975 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 11:15:36,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 11:15:36,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5, 4, 6, 5] total 9 [2020-12-09 11:15:36,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825467157] [2020-12-09 11:15:36,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 11:15:36,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 11:15:36,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 11:15:36,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-12-09 11:15:36,977 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 9 states. [2020-12-09 11:15:39,486 WARN L197 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 26 [2020-12-09 11:15:41,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:15:41,772 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2020-12-09 11:15:41,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 11:15:41,801 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 10 [2020-12-09 11:15:41,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:15:41,801 INFO L225 Difference]: With dead ends: 22 [2020-12-09 11:15:41,801 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 11:15:41,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-12-09 11:15:41,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 11:15:41,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 11:15:41,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 11:15:41,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 11:15:41,803 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-12-09 11:15:41,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:15:41,803 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 11:15:41,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 11:15:41,803 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 11:15:41,803 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 11:15:42,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3,4 cvc4 --incremental --print-success --lang smt,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 11:15:42,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 11:15:44,944 WARN L197 SmtUtils]: Spent 2.49 s on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2020-12-09 11:15:47,195 WARN L197 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 38 DAG size of output: 26 [2020-12-09 11:15:47,197 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 11:15:47,198 INFO L262 CegarLoopResult]: For program point L27-1(lines 27 36) no Hoare annotation was computed. [2020-12-09 11:15:47,198 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-12-09 11:15:47,198 INFO L258 CegarLoopResult]: At program point L27-3(lines 27 36) the Hoare annotation is: (let ((.cse0 ((_ sign_extend 32) (_ bv0 32)))) (or (and (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= .cse0 (bvadd (bvneg (bvmul (bvmul ((_ sign_extend 32) (_ bv3 32)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)) (bvmul ((_ sign_extend 32) (_ bv6 32)) ULTIMATE.start_main_~x~0) (bvneg (bvmul (bvmul (bvmul ((_ sign_extend 32) (_ bv2 32)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)) (bvneg ULTIMATE.start_main_~y~0)))) (and (= .cse0 ULTIMATE.start_main_~x~0) (= .cse0 ULTIMATE.start_main_~y~0)))) [2020-12-09 11:15:47,198 INFO L262 CegarLoopResult]: For program point L27-4(lines 27 36) no Hoare annotation was computed. [2020-12-09 11:15:47,198 INFO L262 CegarLoopResult]: For program point L11(lines 11 12) no Hoare annotation was computed. [2020-12-09 11:15:47,199 INFO L262 CegarLoopResult]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2020-12-09 11:15:47,199 INFO L265 CegarLoopResult]: At program point L38(lines 18 39) the Hoare annotation is: true [2020-12-09 11:15:47,199 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 11:15:47,199 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 11:15:47,199 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 11:15:47,199 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-12-09 11:15:47,199 INFO L262 CegarLoopResult]: For program point L10(lines 10 13) no Hoare annotation was computed. [2020-12-09 11:15:47,199 INFO L258 CegarLoopResult]: At program point L10-2(lines 30 31) the Hoare annotation is: (and (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvneg (bvmul (bvmul ((_ sign_extend 32) (_ bv3 32)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)) (bvmul ((_ sign_extend 32) (_ bv6 32)) ULTIMATE.start_main_~x~0) (bvneg (bvmul (bvmul (bvmul ((_ sign_extend 32) (_ bv2 32)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~y~0)) (bvneg ULTIMATE.start_main_~y~0)))) [2020-12-09 11:15:47,199 INFO L262 CegarLoopResult]: For program point L10-3(lines 10 13) no Hoare annotation was computed. [2020-12-09 11:15:47,200 INFO L265 CegarLoopResult]: At program point L10-5(lines 9 15) the Hoare annotation is: true [2020-12-09 11:15:47,205 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 11:15:47,207 INFO L168 Benchmark]: Toolchain (without parser) took 19303.02 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 36.1 MB in the beginning and 48.6 MB in the end (delta: -12.6 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.1 GB. [2020-12-09 11:15:47,208 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 56.6 MB. Free memory was 39.0 MB in the beginning and 38.9 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 11:15:47,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 162.23 ms. Allocated memory is still 56.6 MB. Free memory was 35.9 MB in the beginning and 40.9 MB in the end (delta: -5.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 11:15:47,209 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.75 ms. Allocated memory is still 56.6 MB. Free memory was 40.9 MB in the beginning and 39.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 11:15:47,209 INFO L168 Benchmark]: Boogie Preprocessor took 18.01 ms. Allocated memory is still 56.6 MB. Free memory was 39.5 MB in the beginning and 38.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 11:15:47,210 INFO L168 Benchmark]: RCFGBuilder took 600.03 ms. Allocated memory is still 56.6 MB. Free memory was 38.3 MB in the beginning and 25.8 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 11:15:47,211 INFO L168 Benchmark]: TraceAbstraction took 18489.02 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 25.4 MB in the beginning and 48.6 MB in the end (delta: -23.2 MB). Peak memory consumption was 17.1 MB. Max. memory is 16.1 GB. [2020-12-09 11:15:47,213 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 56.6 MB. Free memory was 39.0 MB in the beginning and 38.9 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 162.23 ms. Allocated memory is still 56.6 MB. Free memory was 35.9 MB in the beginning and 40.9 MB in the end (delta: -5.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.75 ms. Allocated memory is still 56.6 MB. Free memory was 40.9 MB in the beginning and 39.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.01 ms. Allocated memory is still 56.6 MB. Free memory was 39.5 MB in the beginning and 38.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 600.03 ms. Allocated memory is still 56.6 MB. Free memory was 38.3 MB in the beginning and 25.8 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 18489.02 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 25.4 MB in the beginning and 48.6 MB in the end (delta: -23.2 MB). Peak memory consumption was 17.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - 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...