./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.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_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/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 7f7ab7fb07c84cec955ed17f81b1e4c956a66f53 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/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 7f7ab7fb07c84cec955ed17f81b1e4c956a66f53 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 06:48:48,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 06:48:48,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 06:48:48,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 06:48:48,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 06:48:48,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 06:48:48,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 06:48:48,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 06:48:48,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 06:48:48,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 06:48:48,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 06:48:48,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 06:48:48,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 06:48:48,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 06:48:48,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 06:48:48,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 06:48:48,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 06:48:48,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 06:48:48,503 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 06:48:48,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 06:48:48,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 06:48:48,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 06:48:48,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 06:48:48,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 06:48:48,514 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 06:48:48,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 06:48:48,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 06:48:48,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 06:48:48,516 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 06:48:48,517 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 06:48:48,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 06:48:48,518 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 06:48:48,519 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 06:48:48,520 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 06:48:48,521 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 06:48:48,521 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 06:48:48,522 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 06:48:48,522 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 06:48:48,522 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 06:48:48,523 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 06:48:48,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 06:48:48,524 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 06:48:48,546 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 06:48:48,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 06:48:48,547 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 06:48:48,547 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 06:48:48,547 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 06:48:48,548 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 06:48:48,548 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 06:48:48,548 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 06:48:48,548 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 06:48:48,548 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 06:48:48,548 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 06:48:48,549 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 06:48:48,549 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 06:48:48,549 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 06:48:48,549 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 06:48:48,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 06:48:48,550 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 06:48:48,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 06:48:48,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 06:48:48,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 06:48:48,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 06:48:48,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 06:48:48,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 06:48:48,551 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 06:48:48,551 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 06:48:48,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 06:48:48,552 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 06:48:48,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 06:48:48,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 06:48:48,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 06:48:48,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:48:48,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 06:48:48,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 06:48:48,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 06:48:48,553 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 06:48:48,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 06:48:48,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 06:48:48,554 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 06:48:48,554 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 06:48:48,554 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_259495d7-e5e9-4f4a-9882-2be201f63062/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f7ab7fb07c84cec955ed17f81b1e4c956a66f53 [2020-12-09 06:48:48,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 06:48:48,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 06:48:48,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 06:48:48,762 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 06:48:48,762 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 06:48:48,763 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c [2020-12-09 06:48:48,803 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan/data/44a9c88e3/ea6cd02bd46f40559f1c6534c1d734f7/FLAG95b5cd8a2 [2020-12-09 06:48:49,165 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 06:48:49,165 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c [2020-12-09 06:48:49,170 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan/data/44a9c88e3/ea6cd02bd46f40559f1c6534c1d734f7/FLAG95b5cd8a2 [2020-12-09 06:48:49,180 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan/data/44a9c88e3/ea6cd02bd46f40559f1c6534c1d734f7 [2020-12-09 06:48:49,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 06:48:49,182 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 06:48:49,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 06:48:49,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 06:48:49,186 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 06:48:49,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:48:49" (1/1) ... [2020-12-09 06:48:49,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c37ee24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:48:49, skipping insertion in model container [2020-12-09 06:48:49,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:48:49" (1/1) ... [2020-12-09 06:48:49,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 06:48:49,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 06:48:49,303 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_259495d7-e5e9-4f4a-9882-2be201f63062/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c[526,539] [2020-12-09 06:48:49,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:48:49,320 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 06:48:49,328 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_259495d7-e5e9-4f4a-9882-2be201f63062/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c[526,539] [2020-12-09 06:48:49,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:48:49,342 INFO L208 MainTranslator]: Completed translation [2020-12-09 06:48:49,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:48:49 WrapperNode [2020-12-09 06:48:49,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 06:48:49,343 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 06:48:49,343 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 06:48:49,343 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 06:48:49,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:48:49" (1/1) ... [2020-12-09 06:48:49,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:48:49" (1/1) ... [2020-12-09 06:48:49,367 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 06:48:49,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 06:48:49,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 06:48:49,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 06:48:49,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:48:49" (1/1) ... [2020-12-09 06:48:49,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:48:49" (1/1) ... [2020-12-09 06:48:49,375 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:48:49" (1/1) ... [2020-12-09 06:48:49,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:48:49" (1/1) ... [2020-12-09 06:48:49,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:48:49" (1/1) ... [2020-12-09 06:48:49,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:48:49" (1/1) ... [2020-12-09 06:48:49,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:48:49" (1/1) ... [2020-12-09 06:48:49,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 06:48:49,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 06:48:49,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 06:48:49,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 06:48:49,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:48:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/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 06:48:49,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 06:48:49,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 06:48:49,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 06:48:49,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 06:48:49,691 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 06:48:49,691 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-09 06:48:49,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:48:49 BoogieIcfgContainer [2020-12-09 06:48:49,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 06:48:49,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 06:48:49,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 06:48:49,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 06:48:49,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:48:49" (1/3) ... [2020-12-09 06:48:49,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40edabb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:48:49, skipping insertion in model container [2020-12-09 06:48:49,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:48:49" (2/3) ... [2020-12-09 06:48:49,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40edabb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:48:49, skipping insertion in model container [2020-12-09 06:48:49,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:48:49" (3/3) ... [2020-12-09 06:48:49,701 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_valuebound1.c [2020-12-09 06:48:49,716 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 06:48:49,718 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-09 06:48:49,726 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-09 06:48:49,747 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 06:48:49,747 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 06:48:49,747 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 06:48:49,747 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 06:48:49,747 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 06:48:49,747 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 06:48:49,747 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 06:48:49,747 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 06:48:49,759 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-12-09 06:48:49,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 06:48:49,763 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:48:49,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 06:48:49,764 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:48:49,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:48:49,770 INFO L82 PathProgramCache]: Analyzing trace with hash 4933487, now seen corresponding path program 1 times [2020-12-09 06:48:49,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:48:49,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798792874] [2020-12-09 06:48:49,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:48:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:48:49,926 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 06:48:49,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798792874] [2020-12-09 06:48:49,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:48:49,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:48:49,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053463034] [2020-12-09 06:48:49,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:48:49,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:48:49,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:48:49,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:48:49,949 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 4 states. [2020-12-09 06:48:50,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:48:50,030 INFO L93 Difference]: Finished difference Result 83 states and 109 transitions. [2020-12-09 06:48:50,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 06:48:50,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-12-09 06:48:50,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:48:50,037 INFO L225 Difference]: With dead ends: 83 [2020-12-09 06:48:50,037 INFO L226 Difference]: Without dead ends: 47 [2020-12-09 06:48:50,040 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:48:50,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-09 06:48:50,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 29. [2020-12-09 06:48:50,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-09 06:48:50,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-12-09 06:48:50,065 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 4 [2020-12-09 06:48:50,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:48:50,066 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-12-09 06:48:50,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:48:50,066 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-12-09 06:48:50,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 06:48:50,066 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:48:50,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 06:48:50,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 06:48:50,067 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:48:50,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:48:50,067 INFO L82 PathProgramCache]: Analyzing trace with hash 446269458, now seen corresponding path program 1 times [2020-12-09 06:48:50,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:48:50,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509154673] [2020-12-09 06:48:50,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:48:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:48:50,102 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 06:48:50,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509154673] [2020-12-09 06:48:50,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:48:50,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:48:50,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777084853] [2020-12-09 06:48:50,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:48:50,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:48:50,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:48:50,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:48:50,105 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 4 states. [2020-12-09 06:48:50,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:48:50,153 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-12-09 06:48:50,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 06:48:50,153 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-09 06:48:50,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:48:50,154 INFO L225 Difference]: With dead ends: 47 [2020-12-09 06:48:50,155 INFO L226 Difference]: Without dead ends: 45 [2020-12-09 06:48:50,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:48:50,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-09 06:48:50,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 27. [2020-12-09 06:48:50,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 06:48:50,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-12-09 06:48:50,162 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 6 [2020-12-09 06:48:50,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:48:50,162 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-12-09 06:48:50,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:48:50,163 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-12-09 06:48:50,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 06:48:50,163 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:48:50,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:48:50,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 06:48:50,164 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:48:50,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:48:50,165 INFO L82 PathProgramCache]: Analyzing trace with hash -631624363, now seen corresponding path program 1 times [2020-12-09 06:48:50,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:48:50,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127902935] [2020-12-09 06:48:50,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:48:50,179 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 06:48:50,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2093838096] [2020-12-09 06:48:50,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/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 06:48:50,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:48:50,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-09 06:48:50,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:48:50,275 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 06:48:50,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:48:50,333 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 06:48:50,333 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 06:48:50,345 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 06:48:50,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127902935] [2020-12-09 06:48:50,346 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 06:48:50,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093838096] [2020-12-09 06:48:50,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:48:50,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-12-09 06:48:50,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75291680] [2020-12-09 06:48:50,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 06:48:50,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:48:50,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 06:48:50,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-09 06:48:50,347 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 10 states. [2020-12-09 06:48:50,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:48:50,653 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2020-12-09 06:48:50,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 06:48:50,654 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 8 [2020-12-09 06:48:50,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:48:50,654 INFO L225 Difference]: With dead ends: 73 [2020-12-09 06:48:50,654 INFO L226 Difference]: Without dead ends: 52 [2020-12-09 06:48:50,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-12-09 06:48:50,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-09 06:48:50,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2020-12-09 06:48:50,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-09 06:48:50,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-12-09 06:48:50,662 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 8 [2020-12-09 06:48:50,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:48:50,662 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-12-09 06:48:50,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 06:48:50,662 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-12-09 06:48:50,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 06:48:50,662 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:48:50,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:48:50,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-09 06:48:50,864 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:48:50,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:48:50,866 INFO L82 PathProgramCache]: Analyzing trace with hash -464752788, now seen corresponding path program 1 times [2020-12-09 06:48:50,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:48:50,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016579319] [2020-12-09 06:48:50,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:48:50,901 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 06:48:50,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1535212402] [2020-12-09 06:48:50,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/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 06:48:50,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:48:50,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-09 06:48:50,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:48:50,974 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 06:48:50,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:48:51,012 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 06:48:51,012 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 06:48:51,024 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 06:48:51,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016579319] [2020-12-09 06:48:51,024 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 06:48:51,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535212402] [2020-12-09 06:48:51,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:48:51,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 8 [2020-12-09 06:48:51,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592398107] [2020-12-09 06:48:51,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 06:48:51,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:48:51,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 06:48:51,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 06:48:51,026 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 9 states. [2020-12-09 06:48:51,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:48:51,095 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2020-12-09 06:48:51,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 06:48:51,096 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2020-12-09 06:48:51,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:48:51,096 INFO L225 Difference]: With dead ends: 54 [2020-12-09 06:48:51,096 INFO L226 Difference]: Without dead ends: 43 [2020-12-09 06:48:51,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-12-09 06:48:51,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-09 06:48:51,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2020-12-09 06:48:51,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-09 06:48:51,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-12-09 06:48:51,102 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 11 [2020-12-09 06:48:51,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:48:51,102 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-12-09 06:48:51,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 06:48:51,102 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-12-09 06:48:51,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-09 06:48:51,103 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:48:51,103 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:48:51,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:48:51,305 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:48:51,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:48:51,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1796570322, now seen corresponding path program 1 times [2020-12-09 06:48:51,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:48:51,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297403087] [2020-12-09 06:48:51,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:48:51,339 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 06:48:51,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1633365262] [2020-12-09 06:48:51,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/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 06:48:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:48:51,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-09 06:48:51,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:48:51,514 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 06:48:51,536 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 06:48:51,538 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 06:48:51,550 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:48:51,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:48:51,590 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 3, 2, 1] term [2020-12-09 06:48:51,591 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 06:48:51,595 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 3, 2, 3, 1] term [2020-12-09 06:48:51,595 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 06:48:51,597 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 3, 1] term [2020-12-09 06:48:51,598 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 06:48:51,601 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 3, 1] term [2020-12-09 06:48:51,602 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 06:48:51,604 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 3, 2, 2, 1] term [2020-12-09 06:48:51,604 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 06:48:51,977 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 06:48:51,977 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 06:48:52,156 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:48:52,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297403087] [2020-12-09 06:48:52,156 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 06:48:52,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633365262] [2020-12-09 06:48:52,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [730108458] [2020-12-09 06:48:52,170 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2020-12-09 06:48:52,171 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 06:48:52,174 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 06:48:52,178 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 06:48:52,178 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 06:48:52,245 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 06:48:52,252 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 06:48:52,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:48:52,841 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: cannot handle proper monomial at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionTir$ExplicitLhsPolynomialRelations.allCoefficientsOne(DualJunctionTir.java:670) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionTir$ExplicitLhsPolynomialRelations.buildDualFiniteJunction(DualJunctionTir.java:629) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionTir$ExplicitLhsPolynomialRelations.buildCorrespondingFiniteJunctionForAntiDer(DualJunctionTir.java:612) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionTir$ExplicitLhsPolynomialRelations.buildBoundConstraint(DualJunctionTir.java:448) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionTir.tryToEliminateConjuncts(DualJunctionTir.java:205) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionTir.tryToEliminateOne(DualJunctionTir.java:158) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionTir.tryExhaustivelyToEliminate(DualJunctionTir.java:125) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionTir.tryToEliminate(DualJunctionTir.java:112) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:776) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:739) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:656) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:358) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.convert(QuantifierPusher.java:217) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.access$0(TermTransformer.java:127) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:431) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.convert(QuantifierPusher.java:217) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.access$0(TermTransformer.java:127) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:431) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.convert(QuantifierPusher.java:217) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.access$0(TermTransformer.java:127) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.eliminate(QuantifierPusher.java:151) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.eliminate(QuantifierPusher.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elimPushPull(PartialQuantifierElimination.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elimPushPull(PartialQuantifierElimination.java:202) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.quantifier(PartialQuantifierElimination.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:279) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1133) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-12-09 06:48:52,844 INFO L168 Benchmark]: Toolchain (without parser) took 3661.11 ms. Allocated memory was 86.0 MB in the beginning and 127.9 MB in the end (delta: 41.9 MB). Free memory was 45.2 MB in the beginning and 88.0 MB in the end (delta: -42.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 16.1 GB. [2020-12-09 06:48:52,844 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 86.0 MB. Free memory was 61.4 MB in the beginning and 61.3 MB in the end (delta: 115.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:48:52,845 INFO L168 Benchmark]: CACSL2BoogieTranslator took 159.08 ms. Allocated memory is still 86.0 MB. Free memory was 45.0 MB in the beginning and 57.4 MB in the end (delta: -12.4 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2020-12-09 06:48:52,845 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.83 ms. Allocated memory is still 86.0 MB. Free memory was 57.4 MB in the beginning and 55.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:48:52,846 INFO L168 Benchmark]: Boogie Preprocessor took 15.96 ms. Allocated memory is still 86.0 MB. Free memory was 55.6 MB in the beginning and 54.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:48:52,846 INFO L168 Benchmark]: RCFGBuilder took 309.76 ms. Allocated memory is still 86.0 MB. Free memory was 54.5 MB in the beginning and 49.0 MB in the end (delta: 5.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 06:48:52,847 INFO L168 Benchmark]: TraceAbstraction took 3148.05 ms. Allocated memory was 86.0 MB in the beginning and 127.9 MB in the end (delta: 41.9 MB). Free memory was 48.6 MB in the beginning and 88.0 MB in the end (delta: -39.4 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2020-12-09 06:48:52,849 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 86.0 MB. Free memory was 61.4 MB in the beginning and 61.3 MB in the end (delta: 115.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 159.08 ms. Allocated memory is still 86.0 MB. Free memory was 45.0 MB in the beginning and 57.4 MB in the end (delta: -12.4 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 23.83 ms. Allocated memory is still 86.0 MB. Free memory was 57.4 MB in the beginning and 55.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 15.96 ms. Allocated memory is still 86.0 MB. Free memory was 55.6 MB in the beginning and 54.5 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 309.76 ms. Allocated memory is still 86.0 MB. Free memory was 54.5 MB in the beginning and 49.0 MB in the end (delta: 5.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3148.05 ms. Allocated memory was 86.0 MB in the beginning and 127.9 MB in the end (delta: 41.9 MB). Free memory was 48.6 MB in the beginning and 88.0 MB in the end (delta: -39.4 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: cannot handle proper monomial de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: cannot handle proper monomial: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionTir$ExplicitLhsPolynomialRelations.allCoefficientsOne(DualJunctionTir.java:670) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 06:48:54,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 06:48:54,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 06:48:54,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 06:48:54,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 06:48:54,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 06:48:54,531 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 06:48:54,533 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 06:48:54,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 06:48:54,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 06:48:54,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 06:48:54,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 06:48:54,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 06:48:54,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 06:48:54,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 06:48:54,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 06:48:54,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 06:48:54,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 06:48:54,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 06:48:54,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 06:48:54,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 06:48:54,547 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 06:48:54,549 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 06:48:54,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 06:48:54,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 06:48:54,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 06:48:54,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 06:48:54,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 06:48:54,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 06:48:54,554 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 06:48:54,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 06:48:54,555 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 06:48:54,556 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 06:48:54,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 06:48:54,557 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 06:48:54,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 06:48:54,558 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 06:48:54,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 06:48:54,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 06:48:54,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 06:48:54,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 06:48:54,560 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 06:48:54,585 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 06:48:54,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 06:48:54,586 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 06:48:54,586 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 06:48:54,587 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 06:48:54,587 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 06:48:54,587 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 06:48:54,587 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 06:48:54,587 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 06:48:54,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 06:48:54,588 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 06:48:54,588 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 06:48:54,588 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 06:48:54,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 06:48:54,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 06:48:54,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 06:48:54,589 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 06:48:54,589 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 06:48:54,589 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 06:48:54,589 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 06:48:54,589 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 06:48:54,589 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 06:48:54,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 06:48:54,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 06:48:54,590 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 06:48:54,590 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 06:48:54,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:48:54,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 06:48:54,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 06:48:54,591 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 06:48:54,591 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 06:48:54,591 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 06:48:54,591 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 06:48:54,591 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 06:48:54,591 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 06:48:54,591 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_259495d7-e5e9-4f4a-9882-2be201f63062/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f7ab7fb07c84cec955ed17f81b1e4c956a66f53 [2020-12-09 06:48:54,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 06:48:54,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 06:48:54,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 06:48:54,826 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 06:48:54,827 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 06:48:54,827 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c [2020-12-09 06:48:54,868 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan/data/e876b41ad/d11445977d654e2783fd28422b513f31/FLAGaf06244d6 [2020-12-09 06:48:55,257 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 06:48:55,258 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c [2020-12-09 06:48:55,262 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan/data/e876b41ad/d11445977d654e2783fd28422b513f31/FLAGaf06244d6 [2020-12-09 06:48:55,272 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan/data/e876b41ad/d11445977d654e2783fd28422b513f31 [2020-12-09 06:48:55,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 06:48:55,275 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 06:48:55,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 06:48:55,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 06:48:55,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 06:48:55,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:48:55" (1/1) ... [2020-12-09 06:48:55,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@785bb88d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:48:55, skipping insertion in model container [2020-12-09 06:48:55,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:48:55" (1/1) ... [2020-12-09 06:48:55,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 06:48:55,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 06:48:55,390 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_259495d7-e5e9-4f4a-9882-2be201f63062/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c[526,539] [2020-12-09 06:48:55,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:48:55,409 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 06:48:55,418 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_259495d7-e5e9-4f4a-9882-2be201f63062/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c[526,539] [2020-12-09 06:48:55,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:48:55,433 INFO L208 MainTranslator]: Completed translation [2020-12-09 06:48:55,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:48:55 WrapperNode [2020-12-09 06:48:55,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 06:48:55,434 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 06:48:55,434 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 06:48:55,435 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 06:48:55,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:48:55" (1/1) ... [2020-12-09 06:48:55,446 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:48:55" (1/1) ... [2020-12-09 06:48:55,472 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 06:48:55,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 06:48:55,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 06:48:55,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 06:48:55,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:48:55" (1/1) ... [2020-12-09 06:48:55,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:48:55" (1/1) ... [2020-12-09 06:48:55,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:48:55" (1/1) ... [2020-12-09 06:48:55,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:48:55" (1/1) ... [2020-12-09 06:48:55,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:48:55" (1/1) ... [2020-12-09 06:48:55,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:48:55" (1/1) ... [2020-12-09 06:48:55,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:48:55" (1/1) ... [2020-12-09 06:48:55,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 06:48:55,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 06:48:55,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 06:48:55,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 06:48:55,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:48:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/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 06:48:55,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 06:48:55,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 06:48:55,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 06:48:55,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 06:48:55,822 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 06:48:55,823 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-09 06:48:55,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:48:55 BoogieIcfgContainer [2020-12-09 06:48:55,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 06:48:55,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 06:48:55,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 06:48:55,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 06:48:55,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:48:55" (1/3) ... [2020-12-09 06:48:55,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73074f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:48:55, skipping insertion in model container [2020-12-09 06:48:55,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:48:55" (2/3) ... [2020-12-09 06:48:55,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73074f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:48:55, skipping insertion in model container [2020-12-09 06:48:55,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:48:55" (3/3) ... [2020-12-09 06:48:55,830 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_valuebound1.c [2020-12-09 06:48:55,840 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 06:48:55,843 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-09 06:48:55,850 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-09 06:48:55,868 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 06:48:55,869 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 06:48:55,869 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 06:48:55,869 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 06:48:55,869 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 06:48:55,869 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 06:48:55,869 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 06:48:55,869 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 06:48:55,881 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-12-09 06:48:55,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 06:48:55,884 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:48:55,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:48:55,885 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:48:55,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:48:55,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-12-09 06:48:55,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:48:55,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072916498] [2020-12-09 06:48:55,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/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 06:48:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:48:55,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 06:48:55,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:48:55,970 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 06:48:55,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:48:55,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2072916498] [2020-12-09 06:48:55,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:48:55,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 06:48:55,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022378041] [2020-12-09 06:48:55,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 06:48:55,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:48:55,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 06:48:55,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 06:48:55,986 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2020-12-09 06:48:56,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:48:56,000 INFO L93 Difference]: Finished difference Result 75 states and 102 transitions. [2020-12-09 06:48:56,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 06:48:56,001 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-09 06:48:56,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:48:56,008 INFO L225 Difference]: With dead ends: 75 [2020-12-09 06:48:56,008 INFO L226 Difference]: Without dead ends: 35 [2020-12-09 06:48:56,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 06:48:56,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-09 06:48:56,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-12-09 06:48:56,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-09 06:48:56,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-12-09 06:48:56,036 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 7 [2020-12-09 06:48:56,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:48:56,036 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-12-09 06:48:56,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 06:48:56,037 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-12-09 06:48:56,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 06:48:56,037 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:48:56,037 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:48:56,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 06:48:56,238 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:48:56,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:48:56,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-12-09 06:48:56,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:48:56,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540870883] [2020-12-09 06:48:56,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/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 06:48:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:48:56,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 06:48:56,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:48:56,317 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 06:48:56,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:48:56,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540870883] [2020-12-09 06:48:56,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:48:56,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 06:48:56,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913297335] [2020-12-09 06:48:56,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:48:56,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:48:56,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:48:56,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:48:56,321 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 4 states. [2020-12-09 06:48:56,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:48:56,435 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2020-12-09 06:48:56,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:48:56,437 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-09 06:48:56,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:48:56,438 INFO L225 Difference]: With dead ends: 53 [2020-12-09 06:48:56,438 INFO L226 Difference]: Without dead ends: 51 [2020-12-09 06:48:56,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 06:48:56,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-09 06:48:56,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 33. [2020-12-09 06:48:56,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 06:48:56,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-12-09 06:48:56,446 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 7 [2020-12-09 06:48:56,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:48:56,446 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-12-09 06:48:56,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:48:56,446 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-12-09 06:48:56,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 06:48:56,447 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:48:56,447 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:48:56,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 06:48:56,649 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:48:56,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:48:56,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2020-12-09 06:48:56,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:48:56,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173198376] [2020-12-09 06:48:56,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 06:48:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:48:56,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 06:48:56,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:48:56,799 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 06:48:56,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:48:56,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173198376] [2020-12-09 06:48:56,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:48:56,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 06:48:56,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947886848] [2020-12-09 06:48:56,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:48:56,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:48:56,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:48:56,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:48:56,801 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 4 states. [2020-12-09 06:48:56,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:48:56,948 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2020-12-09 06:48:56,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:48:56,949 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 06:48:56,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:48:56,950 INFO L225 Difference]: With dead ends: 51 [2020-12-09 06:48:56,950 INFO L226 Difference]: Without dead ends: 49 [2020-12-09 06:48:56,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 06:48:56,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-09 06:48:56,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 31. [2020-12-09 06:48:56,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-09 06:48:56,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-12-09 06:48:56,955 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 9 [2020-12-09 06:48:56,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:48:56,955 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-12-09 06:48:56,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:48:56,955 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-12-09 06:48:56,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 06:48:56,956 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:48:56,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:48:57,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 06:48:57,158 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:48:57,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:48:57,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2020-12-09 06:48:57,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:48:57,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1010083330] [2020-12-09 06:48:57,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 06:48:57,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:48:57,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 06:48:57,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:48:57,286 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 06:48:57,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:48:57,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1010083330] [2020-12-09 06:48:57,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:48:57,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 06:48:57,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970970416] [2020-12-09 06:48:57,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:48:57,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:48:57,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:48:57,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:48:57,288 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 4 states. [2020-12-09 06:48:57,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:48:57,476 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2020-12-09 06:48:57,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 06:48:57,477 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 06:48:57,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:48:57,477 INFO L225 Difference]: With dead ends: 72 [2020-12-09 06:48:57,478 INFO L226 Difference]: Without dead ends: 50 [2020-12-09 06:48:57,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 06:48:57,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-09 06:48:57,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-12-09 06:48:57,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-09 06:48:57,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-12-09 06:48:57,487 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 11 [2020-12-09 06:48:57,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:48:57,488 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-12-09 06:48:57,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:48:57,488 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-12-09 06:48:57,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 06:48:57,488 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:48:57,489 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:48:57,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 06:48:57,690 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:48:57,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:48:57,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1783857492, now seen corresponding path program 1 times [2020-12-09 06:48:57,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:48:57,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1370693116] [2020-12-09 06:48:57,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-09 06:48:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:48:57,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 06:48:57,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:48:57,920 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 06:48:57,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:48:57,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1370693116] [2020-12-09 06:48:57,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:48:57,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 06:48:57,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51309702] [2020-12-09 06:48:57,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 06:48:57,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:48:57,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 06:48:57,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-09 06:48:57,922 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 7 states. [2020-12-09 06:48:58,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:48:58,310 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2020-12-09 06:48:58,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 06:48:58,310 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-12-09 06:48:58,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:48:58,311 INFO L225 Difference]: With dead ends: 49 [2020-12-09 06:48:58,311 INFO L226 Difference]: Without dead ends: 38 [2020-12-09 06:48:58,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-12-09 06:48:58,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-09 06:48:58,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-12-09 06:48:58,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-09 06:48:58,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2020-12-09 06:48:58,316 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 14 [2020-12-09 06:48:58,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:48:58,316 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2020-12-09 06:48:58,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 06:48:58,316 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2020-12-09 06:48:58,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 06:48:58,317 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:48:58,317 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:48:58,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 06:48:58,518 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:48:58,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:48:58,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1907209632, now seen corresponding path program 1 times [2020-12-09 06:48:58,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:48:58,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294796049] [2020-12-09 06:48:58,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-09 06:48:58,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:48:58,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 06:48:58,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:48:58,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:48:58,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:48:58,857 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:48:58,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294796049] [2020-12-09 06:48:58,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1336670808] [2020-12-09 06:48:58,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt [2020-12-09 06:48:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:48:58,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 06:48:58,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:48:58,953 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:48:58,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:48:58,980 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:48:58,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988919172] [2020-12-09 06:48:58,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:48:59,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:48:59,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-09 06:48:59,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:48:59,072 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:48:59,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:48:59,184 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 06:48:59,184 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 06:48:59,315 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:48:59,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 06:48:59,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 7, 7] total 12 [2020-12-09 06:48:59,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866438668] [2020-12-09 06:48:59,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 06:48:59,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:48:59,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 06:48:59,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-12-09 06:48:59,317 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 12 states. [2020-12-09 06:49:06,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:49:06,492 INFO L93 Difference]: Finished difference Result 101 states and 113 transitions. [2020-12-09 06:49:06,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-09 06:49:06,494 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-12-09 06:49:06,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:49:06,495 INFO L225 Difference]: With dead ends: 101 [2020-12-09 06:49:06,495 INFO L226 Difference]: Without dead ends: 79 [2020-12-09 06:49:06,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=136, Invalid=244, Unknown=0, NotChecked=0, Total=380 [2020-12-09 06:49:06,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-09 06:49:06,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 60. [2020-12-09 06:49:06,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-12-09 06:49:06,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2020-12-09 06:49:06,502 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 18 [2020-12-09 06:49:06,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:49:06,502 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2020-12-09 06:49:06,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 06:49:06,502 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2020-12-09 06:49:06,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 06:49:06,502 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:49:06,503 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:49:07,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 mathsat -unsat_core_generation=3,8 cvc4 --incremental --print-success --lang smt [2020-12-09 06:49:07,106 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:49:07,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:49:07,108 INFO L82 PathProgramCache]: Analyzing trace with hash -435290303, now seen corresponding path program 1 times [2020-12-09 06:49:07,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:49:07,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2076997977] [2020-12-09 06:49:07,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-12-09 06:49:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:49:07,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 06:49:07,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:49:07,287 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:49:07,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:49:07,694 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:49:07,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2076997977] [2020-12-09 06:49:07,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-09 06:49:07,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2020-12-09 06:49:07,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863342486] [2020-12-09 06:49:07,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 06:49:07,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:49:07,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 06:49:07,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-09 06:49:07,696 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 5 states. [2020-12-09 06:49:08,561 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 06:49:08,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:49:08,749 INFO L93 Difference]: Finished difference Result 102 states and 111 transitions. [2020-12-09 06:49:08,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 06:49:08,751 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-12-09 06:49:08,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:49:08,752 INFO L225 Difference]: With dead ends: 102 [2020-12-09 06:49:08,752 INFO L226 Difference]: Without dead ends: 100 [2020-12-09 06:49:08,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-12-09 06:49:08,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-12-09 06:49:08,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 68. [2020-12-09 06:49:08,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-09 06:49:08,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2020-12-09 06:49:08,761 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 21 [2020-12-09 06:49:08,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:49:08,761 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2020-12-09 06:49:08,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 06:49:08,761 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2020-12-09 06:49:08,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-09 06:49:08,762 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:49:08,762 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:49:08,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-12-09 06:49:08,964 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:49:08,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:49:08,965 INFO L82 PathProgramCache]: Analyzing trace with hash 115055918, now seen corresponding path program 1 times [2020-12-09 06:49:08,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:49:08,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1917257886] [2020-12-09 06:49:08,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-12-09 06:49:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:49:09,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-09 06:49:09,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:49:09,454 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:49:09,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:49:12,256 WARN L197 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-12-09 06:49:12,275 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:49:12,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1917257886] [2020-12-09 06:49:12,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1195002036] [2020-12-09 06:49:12,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt [2020-12-09 06:49:12,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:49:12,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-09 06:49:12,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:49:12,748 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:49:12,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:49:13,988 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 06:49:14,003 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:49:14,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163056329] [2020-12-09 06:49:14,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:49:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:49:14,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-09 06:49:14,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:49:14,224 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:49:14,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:49:15,641 WARN L197 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 06:49:17,199 WARN L197 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-12-09 06:49:18,824 WARN L197 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-12-09 06:49:18,828 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 06:49:18,829 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 06:49:20,481 WARN L197 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-12-09 06:49:20,494 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:49:20,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 06:49:20,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 6, 7, 10, 10] total 23 [2020-12-09 06:49:20,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795285438] [2020-12-09 06:49:20,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-09 06:49:20,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:49:20,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-09 06:49:20,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2020-12-09 06:49:20,497 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand 23 states. [2020-12-09 06:49:22,246 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 25 [2020-12-09 06:49:41,516 WARN L197 SmtUtils]: Spent 18.66 s on a formula simplification. DAG size of input: 55 DAG size of output: 47 [2020-12-09 06:50:00,801 WARN L197 SmtUtils]: Spent 17.83 s on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2020-12-09 06:50:00,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:50:00,864 INFO L93 Difference]: Finished difference Result 75 states and 82 transitions. [2020-12-09 06:50:00,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 06:50:00,879 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 27 [2020-12-09 06:50:00,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:50:00,879 INFO L225 Difference]: With dead ends: 75 [2020-12-09 06:50:00,879 INFO L226 Difference]: Without dead ends: 33 [2020-12-09 06:50:00,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 133 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 49.4s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870 [2020-12-09 06:50:00,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-09 06:50:00,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-12-09 06:50:00,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 06:50:00,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 32 transitions. [2020-12-09 06:50:00,884 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 32 transitions. Word has length 27 [2020-12-09 06:50:00,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:50:00,885 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 32 transitions. [2020-12-09 06:50:00,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-09 06:50:00,885 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 32 transitions. [2020-12-09 06:50:00,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-09 06:50:00,885 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:50:00,886 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:50:01,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 mathsat -unsat_core_generation=3,12 cvc4 --incremental --print-success --lang smt [2020-12-09 06:50:01,489 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:50:01,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:50:01,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1492250324, now seen corresponding path program 1 times [2020-12-09 06:50:01,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:50:01,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862483519] [2020-12-09 06:50:01,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2020-12-09 06:50:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:50:01,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-09 06:50:01,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:50:01,848 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:50:01,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:50:03,500 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-12-09 06:50:05,133 WARN L197 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-12-09 06:50:05,149 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:50:05,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862483519] [2020-12-09 06:50:05,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [173095363] [2020-12-09 06:50:05,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan/cvc4 Starting monitored process 15 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4 --incremental --print-success --lang smt [2020-12-09 06:50:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:50:05,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-09 06:50:05,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:50:05,698 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:50:05,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:50:08,128 WARN L197 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-12-09 06:50:09,376 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-12-09 06:50:09,394 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:50:09,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381144436] [2020-12-09 06:50:09,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_259495d7-e5e9-4f4a-9882-2be201f63062/bin/utaipan/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:50:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:50:09,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-09 06:50:09,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:50:11,309 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:50:11,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:50:12,051 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 06:50:12,051 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 06:50:18,278 WARN L197 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 06:50:20,064 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-12-09 06:50:21,698 WARN L197 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-12-09 06:50:21,702 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 06:50:21,702 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 06:50:23,044 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-12-09 06:50:23,053 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:50:23,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 06:50:23,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 9, 8, 14, 13] total 39 [2020-12-09 06:50:23,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909658038] [2020-12-09 06:50:23,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-12-09 06:50:23,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:50:23,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-12-09 06:50:23,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1228, Unknown=0, NotChecked=0, Total=1482 [2020-12-09 06:50:23,055 INFO L87 Difference]: Start difference. First operand 33 states and 32 transitions. Second operand 39 states. [2020-12-09 06:50:25,536 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 26 [2020-12-09 06:50:25,904 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 30 [2020-12-09 06:50:26,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:50:26,031 INFO L93 Difference]: Finished difference Result 33 states and 32 transitions. [2020-12-09 06:50:26,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 06:50:26,034 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 32 [2020-12-09 06:50:26,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:50:26,034 INFO L225 Difference]: With dead ends: 33 [2020-12-09 06:50:26,035 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 06:50:26,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 146 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 22.3s TimeCoverageRelationStatistics Valid=386, Invalid=1594, Unknown=0, NotChecked=0, Total=1980 [2020-12-09 06:50:26,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 06:50:26,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 06:50:26,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 06:50:26,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 06:50:26,036 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2020-12-09 06:50:26,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:50:26,036 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 06:50:26,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-12-09 06:50:26,037 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 06:50:26,037 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 06:50:26,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 mathsat -unsat_core_generation=3,15 cvc4 --incremental --print-success --lang smt [2020-12-09 06:50:26,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 06:50:27,173 WARN L197 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2020-12-09 06:50:27,387 WARN L197 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 28 [2020-12-09 06:50:32,370 WARN L197 SmtUtils]: Spent 4.98 s on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2020-12-09 06:50:32,754 WARN L197 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2020-12-09 06:50:33,153 WARN L197 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2020-12-09 06:50:38,438 WARN L197 SmtUtils]: Spent 5.27 s on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2020-12-09 06:50:38,440 INFO L265 CegarLoopResult]: At program point L60(lines 22 61) the Hoare annotation is: true [2020-12-09 06:50:38,440 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-09 06:50:38,440 INFO L262 CegarLoopResult]: For program point L52(lines 52 55) no Hoare annotation was computed. [2020-12-09 06:50:38,440 INFO L262 CegarLoopResult]: For program point L52-2(lines 22 61) no Hoare annotation was computed. [2020-12-09 06:50:38,440 INFO L262 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-12-09 06:50:38,440 INFO L262 CegarLoopResult]: For program point L44-1(lines 44 56) no Hoare annotation was computed. [2020-12-09 06:50:38,440 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-09 06:50:38,440 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 06:50:38,441 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 06:50:38,441 INFO L262 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-12-09 06:50:38,441 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-09 06:50:38,441 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-09 06:50:38,441 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-09 06:50:38,441 INFO L262 CegarLoopResult]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-12-09 06:50:38,441 INFO L258 CegarLoopResult]: At program point L15-2(lines 14 20) the Hoare annotation is: (let ((.cse0 (= (bvadd (bvmul ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~B~0) ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~A~0)) (.cse1 (bvsle ULTIMATE.start_main_~A~0 (_ bv1 32))) (.cse2 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse3 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse4 (= (_ bv1 32) ULTIMATE.start_main_~B~0))) (or (and .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~B~0) (bvsge ULTIMATE.start_main_~A~0 (_ bv0 32)) (= (_ bv1 32) ULTIMATE.start_main_~p~0) (= (_ bv0 32) ULTIMATE.start_main_~q~0) .cse4) (and .cse0 .cse1 .cse2 .cse3 (bvsge ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~B~0) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0) .cse4 (= (_ bv2 32) ULTIMATE.start_main_~p~0) (= (_ bv2 32) ULTIMATE.start_main_~d~0)))) [2020-12-09 06:50:38,441 INFO L262 CegarLoopResult]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2020-12-09 06:50:38,441 INFO L258 CegarLoopResult]: At program point L15-5(lines 14 20) the Hoare annotation is: (let ((.cse0 (= (bvadd (bvmul ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~B~0) ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~A~0)) (.cse1 (bvsle ULTIMATE.start_main_~A~0 (_ bv1 32))) (.cse2 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse3 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse4 (= (_ bv1 32) ULTIMATE.start_main_~B~0))) (or (and .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~B~0) (bvsge ULTIMATE.start_main_~A~0 (_ bv0 32)) (= (_ bv1 32) ULTIMATE.start_main_~p~0) (= (_ bv0 32) ULTIMATE.start_main_~q~0) .cse4) (and .cse0 .cse1 .cse2 .cse3 (bvsge ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~B~0) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0) .cse4 (= (_ bv2 32) ULTIMATE.start_main_~p~0) (= (_ bv2 32) ULTIMATE.start_main_~d~0)))) [2020-12-09 06:50:38,442 INFO L262 CegarLoopResult]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2020-12-09 06:50:38,442 INFO L258 CegarLoopResult]: At program point L15-8(line 38) the Hoare annotation is: (let ((.cse0 (= (bvadd (bvmul ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~B~0) ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~A~0)) (.cse1 (bvsle ULTIMATE.start_main_~A~0 (_ bv1 32))) (.cse2 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse3 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse4 (= (_ bv1 32) ULTIMATE.start_main_~B~0))) (or (and .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~B~0) (bvsge ULTIMATE.start_main_~A~0 (_ bv0 32)) (= (_ bv1 32) ULTIMATE.start_main_~p~0) (= (_ bv0 32) ULTIMATE.start_main_~q~0) .cse4) (and .cse0 .cse1 .cse2 .cse3 (bvsge ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~B~0) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0) .cse4 (= (_ bv2 32) ULTIMATE.start_main_~p~0) (= (_ bv2 32) ULTIMATE.start_main_~d~0)))) [2020-12-09 06:50:38,442 INFO L262 CegarLoopResult]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2020-12-09 06:50:38,442 INFO L258 CegarLoopResult]: At program point L15-11(lines 14 20) the Hoare annotation is: (let ((.cse0 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse1 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse2 (bvsge ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~B~0)) (.cse3 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0)) (.cse7 (= (_ bv1 32) ULTIMATE.start_main_~p~0)) (.cse4 (= (_ bv0 32) ULTIMATE.start_main_~q~0)) (.cse5 (= (_ bv1 32) ULTIMATE.start_main_~B~0))) (or (and (bvsle ULTIMATE.start_main_~A~0 (_ bv1 32)) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (= (_ bv2 32) ULTIMATE.start_main_~p~0) (= (_ bv2 32) ULTIMATE.start_main_~d~0)) (let ((.cse6 (bvsdiv (bvmul ULTIMATE.start_main_~B~0 (_ bv2 32)) (_ bv2 32)))) (and .cse0 .cse1 (= ULTIMATE.start_main_~d~0 .cse6) (= (bvadd ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~A~0) (= ULTIMATE.start_main_~A~0 (bvadd (bvmul ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~B~0) (bvmul (bvsdiv ULTIMATE.start_main_~p~0 (_ bv2 32)) ULTIMATE.start_main_~B~0) (bvneg (bvsdiv ULTIMATE.start_main_~d~0 (_ bv2 32))) ULTIMATE.start_main_~r~0)) (not (bvsge (bvadd (bvmul (bvneg ULTIMATE.start_main_~d~0) (_ bv4294967295 32)) ULTIMATE.start_main_~r~0) (_ bv2 32))) .cse7 (= (_ bv1 32) ULTIMATE.start_main_~q~0) (bvsge (bvadd (bvmul (bvneg .cse6) (_ bv4294967295 32)) ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~B~0))) (and .cse0 .cse1 (not .cse2) (= ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~B~0) .cse3 (bvsge ULTIMATE.start_main_~A~0 (_ bv0 32)) .cse7 .cse4 .cse5))) [2020-12-09 06:50:38,442 INFO L262 CegarLoopResult]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2020-12-09 06:50:38,442 INFO L258 CegarLoopResult]: At program point L15-14(line 48) the Hoare annotation is: (let ((.cse0 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse1 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse2 (bvsge ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~B~0)) (.cse3 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0)) (.cse7 (= (_ bv1 32) ULTIMATE.start_main_~p~0)) (.cse4 (= (_ bv0 32) ULTIMATE.start_main_~q~0)) (.cse5 (= (_ bv1 32) ULTIMATE.start_main_~B~0))) (or (and (bvsle ULTIMATE.start_main_~A~0 (_ bv1 32)) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (= (_ bv2 32) ULTIMATE.start_main_~p~0) (= (_ bv2 32) ULTIMATE.start_main_~d~0)) (let ((.cse6 (bvsdiv (bvmul ULTIMATE.start_main_~B~0 (_ bv2 32)) (_ bv2 32)))) (and .cse0 .cse1 (= ULTIMATE.start_main_~d~0 .cse6) (= (bvadd ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~A~0) (= ULTIMATE.start_main_~A~0 (bvadd (bvmul ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~B~0) (bvmul (bvsdiv ULTIMATE.start_main_~p~0 (_ bv2 32)) ULTIMATE.start_main_~B~0) (bvneg (bvsdiv ULTIMATE.start_main_~d~0 (_ bv2 32))) ULTIMATE.start_main_~r~0)) (not (bvsge (bvadd (bvmul (bvneg ULTIMATE.start_main_~d~0) (_ bv4294967295 32)) ULTIMATE.start_main_~r~0) (_ bv2 32))) .cse7 (= (_ bv1 32) ULTIMATE.start_main_~q~0) (bvsge (bvadd (bvmul (bvneg .cse6) (_ bv4294967295 32)) ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~B~0))) (and .cse0 .cse1 (not .cse2) (= ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~B~0) .cse3 (bvsge ULTIMATE.start_main_~A~0 (_ bv0 32)) .cse7 .cse4 .cse5))) [2020-12-09 06:50:38,442 INFO L262 CegarLoopResult]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2020-12-09 06:50:38,443 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 06:50:38,443 INFO L258 CegarLoopResult]: At program point L15-17(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~B~0) (= (_ bv1 32) ULTIMATE.start_main_~p~0) (= (_ bv1 32) ULTIMATE.start_main_~B~0)) [2020-12-09 06:50:38,443 INFO L262 CegarLoopResult]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2020-12-09 06:50:38,443 INFO L265 CegarLoopResult]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2020-12-09 06:50:38,443 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-09 06:50:38,443 INFO L262 CegarLoopResult]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-12-09 06:50:38,443 INFO L262 CegarLoopResult]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-12-09 06:50:38,443 INFO L262 CegarLoopResult]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2020-12-09 06:50:38,443 INFO L262 CegarLoopResult]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2020-12-09 06:50:38,443 INFO L262 CegarLoopResult]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2020-12-09 06:50:38,443 INFO L262 CegarLoopResult]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2020-12-09 06:50:38,443 INFO L262 CegarLoopResult]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2020-12-09 06:50:38,443 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 06:50:38,444 INFO L258 CegarLoopResult]: At program point L34-2(lines 34 42) the Hoare annotation is: (let ((.cse0 (bvsle ULTIMATE.start_main_~A~0 (_ bv1 32))) (.cse1 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse2 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0)) (.cse3 (= (_ bv0 32) ULTIMATE.start_main_~q~0)) (.cse4 (= (_ bv1 32) ULTIMATE.start_main_~B~0))) (or (and .cse0 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) .cse1 (bvsge ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~B~0) .cse2 .cse3 .cse4 (= (_ bv2 32) ULTIMATE.start_main_~p~0) (= (_ bv2 32) ULTIMATE.start_main_~d~0)) (and .cse0 .cse1 (= ULTIMATE.start_main_~d~0 ULTIMATE.start_main_~B~0) .cse2 (bvsge ULTIMATE.start_main_~A~0 (_ bv0 32)) (= (_ bv1 32) ULTIMATE.start_main_~p~0) .cse3 .cse4))) [2020-12-09 06:50:38,444 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-09 06:50:38,455 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.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 06:50:38,457 INFO L168 Benchmark]: Toolchain (without parser) took 103182.63 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 40.2 MB in the beginning and 63.8 MB in the end (delta: -23.6 MB). Peak memory consumption was 46.3 MB. Max. memory is 16.1 GB. [2020-12-09 06:50:38,458 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 58.7 MB. Free memory is still 41.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:50:38,458 INFO L168 Benchmark]: CACSL2BoogieTranslator took 158.40 ms. Allocated memory is still 58.7 MB. Free memory was 40.1 MB in the beginning and 29.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 06:50:38,458 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.83 ms. Allocated memory is still 58.7 MB. Free memory was 29.7 MB in the beginning and 43.3 MB in the end (delta: -13.6 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2020-12-09 06:50:38,459 INFO L168 Benchmark]: Boogie Preprocessor took 28.29 ms. Allocated memory is still 58.7 MB. Free memory was 43.1 MB in the beginning and 42.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:50:38,459 INFO L168 Benchmark]: RCFGBuilder took 322.33 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 41.8 MB in the beginning and 68.1 MB in the end (delta: -26.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. [2020-12-09 06:50:38,460 INFO L168 Benchmark]: TraceAbstraction took 102631.45 ms. Allocated memory is still 86.0 MB. Free memory was 67.7 MB in the beginning and 63.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 48.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:50:38,461 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 58.7 MB. Free memory is still 41.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 158.40 ms. Allocated memory is still 58.7 MB. Free memory was 40.1 MB in the beginning and 29.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.83 ms. Allocated memory is still 58.7 MB. Free memory was 29.7 MB in the beginning and 43.3 MB in the end (delta: -13.6 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.29 ms. Allocated memory is still 58.7 MB. Free memory was 43.1 MB in the beginning and 42.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 322.33 ms. Allocated memory was 58.7 MB in the beginning and 86.0 MB in the end (delta: 27.3 MB). Free memory was 41.8 MB in the beginning and 68.1 MB in the end (delta: -26.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 102631.45 ms. Allocated memory is still 86.0 MB. Free memory was 67.7 MB in the beginning and 63.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 48.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: 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 7 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((((~bvadd64(~bvmul32(q, B), r) == A && ~bvsle32(A, 1bv32)) && ~bvadd64(cond, 4294967295bv32) == 0bv32) && 1bv32 == cond) && d == B) && ~bvsge32(A, 0bv32)) && 1bv32 == p) && 0bv32 == q) && 1bv32 == B) || ((((((((~bvadd64(~bvmul32(q, B), r) == A && ~bvsle32(A, 1bv32)) && ~bvadd64(cond, 4294967295bv32) == 0bv32) && 1bv32 == cond) && ~bvsge32(r, B)) && r == A) && 1bv32 == B) && 2bv32 == p) && 2bv32 == d) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((~bvsle32(A, 1bv32) && ~bvadd64(cond, 4294967295bv32) == 0bv32) && 1bv32 == cond) && ~bvsge32(r, B)) && r == A) && 0bv32 == q) && 1bv32 == B) && 2bv32 == p) && 2bv32 == d) || (((((((~bvsle32(A, 1bv32) && 1bv32 == cond) && d == B) && r == A) && ~bvsge32(A, 0bv32)) && 1bv32 == p) && 0bv32 == q) && 1bv32 == B) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...