./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/bor5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-crafted/bor5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs --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 6d7cb37edef68135cf37fb72c0f8e748b042580b .............................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-crafted/bor5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs --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 6d7cb37edef68135cf37fb72c0f8e748b042580b ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:19:09,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:19:09,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:19:09,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:19:09,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:19:09,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:19:09,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:19:09,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:19:09,414 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:19:09,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:19:09,421 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:19:09,423 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:19:09,423 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:19:09,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:19:09,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:19:09,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:19:09,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:19:09,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:19:09,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:19:09,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:19:09,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:19:09,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:19:09,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:19:09,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:19:09,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:19:09,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:19:09,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:19:09,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:19:09,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:19:09,474 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:19:09,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:19:09,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:19:09,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:19:09,479 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:19:09,481 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:19:09,481 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:19:09,482 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:19:09,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:19:09,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:19:09,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:19:09,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:19:09,485 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:19:09,527 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:19:09,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:19:09,529 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:19:09,530 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:19:09,530 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:19:09,531 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:19:09,531 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:19:09,531 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:19:09,532 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:19:09,532 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:19:09,533 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:19:09,533 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:19:09,534 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:19:09,534 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:19:09,534 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:19:09,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:19:09,536 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:19:09,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:19:09,536 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:19:09,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:19:09,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:19:09,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:19:09,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:19:09,537 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:19:09,537 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:19:09,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:19:09,538 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:19:09,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:19:09,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:19:09,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:19:09,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:19:09,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:19:09,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:19:09,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:19:09,540 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:19:09,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:19:09,540 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:19:09,541 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:19:09,541 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:19:09,541 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_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d7cb37edef68135cf37fb72c0f8e748b042580b [2021-10-16 02:19:09,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:19:09,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:19:09,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:19:09,855 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:19:09,855 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:19:09,856 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/array-crafted/bor5.i [2021-10-16 02:19:09,924 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/data/b6dd165cd/fec95269f4214970bc01efe816a12444/FLAG03ff2e0fe [2021-10-16 02:19:10,371 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:19:10,372 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/sv-benchmarks/c/array-crafted/bor5.i [2021-10-16 02:19:10,383 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/data/b6dd165cd/fec95269f4214970bc01efe816a12444/FLAG03ff2e0fe [2021-10-16 02:19:10,765 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/data/b6dd165cd/fec95269f4214970bc01efe816a12444 [2021-10-16 02:19:10,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:19:10,770 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:19:10,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:19:10,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:19:10,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:19:10,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:19:10" (1/1) ... [2021-10-16 02:19:10,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e812639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:10, skipping insertion in model container [2021-10-16 02:19:10,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:19:10" (1/1) ... [2021-10-16 02:19:10,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:19:10,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:19:11,022 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/sv-benchmarks/c/array-crafted/bor5.i[1364,1377] [2021-10-16 02:19:11,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:19:11,034 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:19:11,059 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/sv-benchmarks/c/array-crafted/bor5.i[1364,1377] [2021-10-16 02:19:11,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:19:11,073 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:19:11,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:11 WrapperNode [2021-10-16 02:19:11,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:19:11,075 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:19:11,075 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:19:11,075 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:19:11,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:11" (1/1) ... [2021-10-16 02:19:11,093 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:11" (1/1) ... [2021-10-16 02:19:11,120 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:19:11,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:19:11,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:19:11,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:19:11,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:11" (1/1) ... [2021-10-16 02:19:11,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:11" (1/1) ... [2021-10-16 02:19:11,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:11" (1/1) ... [2021-10-16 02:19:11,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:11" (1/1) ... [2021-10-16 02:19:11,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:11" (1/1) ... [2021-10-16 02:19:11,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:11" (1/1) ... [2021-10-16 02:19:11,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:11" (1/1) ... [2021-10-16 02:19:11,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:19:11,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:19:11,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:19:11,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:19:11,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:11" (1/1) ... [2021-10-16 02:19:11,181 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:19:11,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:19:11,208 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:19:11,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:19:11,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:19:11,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:19:11,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-16 02:19:11,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:19:11,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:19:11,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 02:19:11,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:19:11,740 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:19:11,741 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-16 02:19:11,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:19:11 BoogieIcfgContainer [2021-10-16 02:19:11,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:19:11,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:19:11,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:19:11,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:19:11,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:19:10" (1/3) ... [2021-10-16 02:19:11,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a99be4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:19:11, skipping insertion in model container [2021-10-16 02:19:11,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:11" (2/3) ... [2021-10-16 02:19:11,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a99be4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:19:11, skipping insertion in model container [2021-10-16 02:19:11,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:19:11" (3/3) ... [2021-10-16 02:19:11,754 INFO L111 eAbstractionObserver]: Analyzing ICFG bor5.i [2021-10-16 02:19:11,760 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:19:11,761 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:19:11,828 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:19:11,836 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:19:11,836 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:19:11,851 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:19:11,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 02:19:11,857 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:19:11,858 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:19:11,858 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:19:11,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:19:11,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1392646538, now seen corresponding path program 1 times [2021-10-16 02:19:11,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:19:11,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847874247] [2021-10-16 02:19:11,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:19:11,879 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:19:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:19:12,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:19:12,116 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:19:12,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847874247] [2021-10-16 02:19:12,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847874247] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:19:12,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:19:12,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:19:12,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663118949] [2021-10-16 02:19:12,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:19:12,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:19:12,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:19:12,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:19:12,158 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:19:12,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:19:12,211 INFO L93 Difference]: Finished difference Result 24 states and 35 transitions. [2021-10-16 02:19:12,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:19:12,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-16 02:19:12,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:19:12,224 INFO L225 Difference]: With dead ends: 24 [2021-10-16 02:19:12,225 INFO L226 Difference]: Without dead ends: 11 [2021-10-16 02:19:12,229 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:19:12,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-16 02:19:12,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-16 02:19:12,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:19:12,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2021-10-16 02:19:12,270 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 15 transitions. Word has length 9 [2021-10-16 02:19:12,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:19:12,271 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 15 transitions. [2021-10-16 02:19:12,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:19:12,271 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 15 transitions. [2021-10-16 02:19:12,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 02:19:12,272 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:19:12,273 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:19:12,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:19:12,274 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:19:12,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:19:12,275 INFO L82 PathProgramCache]: Analyzing trace with hash -13332003, now seen corresponding path program 1 times [2021-10-16 02:19:12,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:19:12,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777439652] [2021-10-16 02:19:12,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:19:12,276 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:19:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:19:12,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:19:12,391 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:19:12,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777439652] [2021-10-16 02:19:12,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777439652] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:19:12,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:19:12,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:19:12,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863424784] [2021-10-16 02:19:12,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:19:12,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:19:12,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:19:12,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:19:12,395 INFO L87 Difference]: Start difference. First operand 11 states and 15 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:19:12,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:19:12,440 INFO L93 Difference]: Finished difference Result 20 states and 29 transitions. [2021-10-16 02:19:12,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:19:12,441 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-16 02:19:12,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:19:12,442 INFO L225 Difference]: With dead ends: 20 [2021-10-16 02:19:12,442 INFO L226 Difference]: Without dead ends: 14 [2021-10-16 02:19:12,443 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:19:12,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-16 02:19:12,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-16 02:19:12,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:19:12,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2021-10-16 02:19:12,448 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 10 [2021-10-16 02:19:12,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:19:12,448 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2021-10-16 02:19:12,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:19:12,449 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2021-10-16 02:19:12,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 02:19:12,450 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:19:12,450 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:19:12,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:19:12,451 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:19:12,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:19:12,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1561250112, now seen corresponding path program 1 times [2021-10-16 02:19:12,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:19:12,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661413271] [2021-10-16 02:19:12,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:19:12,455 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:19:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:19:12,578 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 02:19:12,579 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:19:12,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661413271] [2021-10-16 02:19:12,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661413271] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:19:12,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:19:12,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-16 02:19:12,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354902603] [2021-10-16 02:19:12,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:19:12,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:19:12,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:19:12,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:19:12,587 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:19:12,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:19:12,644 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2021-10-16 02:19:12,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:19:12,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-16 02:19:12,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:19:12,646 INFO L225 Difference]: With dead ends: 20 [2021-10-16 02:19:12,647 INFO L226 Difference]: Without dead ends: 15 [2021-10-16 02:19:12,647 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:19:12,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-16 02:19:12,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-16 02:19:12,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:19:12,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2021-10-16 02:19:12,652 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 13 [2021-10-16 02:19:12,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:19:12,652 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2021-10-16 02:19:12,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:19:12,653 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2021-10-16 02:19:12,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-16 02:19:12,654 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:19:12,654 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:19:12,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:19:12,655 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:19:12,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:19:12,655 INFO L82 PathProgramCache]: Analyzing trace with hash 592403004, now seen corresponding path program 1 times [2021-10-16 02:19:12,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:19:12,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474009370] [2021-10-16 02:19:12,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:19:12,657 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:19:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:19:12,725 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 02:19:12,725 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:19:12,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474009370] [2021-10-16 02:19:12,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474009370] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:19:12,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359511595] [2021-10-16 02:19:12,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:19:12,727 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:19:12,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:19:12,729 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:19:12,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:19:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:19:12,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 02:19:12,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:19:12,911 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 02:19:12,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:19:13,003 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 02:19:13,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359511595] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:19:13,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [915183305] [2021-10-16 02:19:13,032 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-16 02:19:13,032 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:19:13,037 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:19:13,042 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:19:13,043 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:19:13,078 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:19:13,083 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:19:13,083 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:19:13,084 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 02:19:13,088 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:19:13,089 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:19:13,089 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-16 02:19:13,094 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-10-16 02:19:13,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:19:13,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:19:13,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:19:13,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:19:13,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-16 02:19:13,143 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:19:13,146 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:19:13,147 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:19:13,148 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:19:13,148 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 02:19:13,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:19:13,170 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:19:13,172 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:19:13,184 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-10-16 02:19:13,185 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 02:19:13,185 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:155, output treesize:139 [2021-10-16 02:19:13,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:19:13,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:19:13,404 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_11| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) 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.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:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) [2021-10-16 02:19:13,408 INFO L168 Benchmark]: Toolchain (without parser) took 2637.60 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 82.2 MB in the beginning and 91.0 MB in the end (delta: -8.8 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:19:13,409 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 123.7 MB. Free memory was 98.9 MB in the beginning and 98.8 MB in the end (delta: 66.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:19:13,409 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.72 ms. Allocated memory is still 123.7 MB. Free memory was 82.0 MB in the beginning and 96.7 MB in the end (delta: -14.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:19:13,410 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.25 ms. Allocated memory is still 123.7 MB. Free memory was 96.7 MB in the beginning and 95.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:19:13,411 INFO L168 Benchmark]: Boogie Preprocessor took 34.12 ms. Allocated memory is still 123.7 MB. Free memory was 95.0 MB in the beginning and 93.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:19:13,411 INFO L168 Benchmark]: RCFGBuilder took 588.04 ms. Allocated memory is still 123.7 MB. Free memory was 93.4 MB in the beginning and 76.3 MB in the end (delta: 17.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:19:13,412 INFO L168 Benchmark]: TraceAbstraction took 1661.01 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 75.7 MB in the beginning and 91.0 MB in the end (delta: -15.3 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:19:13,415 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 123.7 MB. Free memory was 98.9 MB in the beginning and 98.8 MB in the end (delta: 66.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 301.72 ms. Allocated memory is still 123.7 MB. Free memory was 82.0 MB in the beginning and 96.7 MB in the end (delta: -14.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.25 ms. Allocated memory is still 123.7 MB. Free memory was 96.7 MB in the beginning and 95.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.12 ms. Allocated memory is still 123.7 MB. Free memory was 95.0 MB in the beginning and 93.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 588.04 ms. Allocated memory is still 123.7 MB. Free memory was 93.4 MB in the beginning and 76.3 MB in the end (delta: 17.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1661.01 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 75.7 MB in the beginning and 91.0 MB in the end (delta: -15.3 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_11| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_11|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 02:19:13,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:19:16,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:19:16,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:19:16,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:19:16,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:19:16,064 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:19:16,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:19:16,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:19:16,078 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:19:16,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:19:16,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:19:16,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:19:16,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:19:16,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:19:16,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:19:16,100 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:19:16,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:19:16,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:19:16,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:19:16,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:19:16,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:19:16,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:19:16,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:19:16,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:19:16,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:19:16,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:19:16,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:19:16,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:19:16,138 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:19:16,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:19:16,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:19:16,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:19:16,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:19:16,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:19:16,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:19:16,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:19:16,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:19:16,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:19:16,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:19:16,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:19:16,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:19:16,151 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:19:16,206 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:19:16,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:19:16,209 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:19:16,209 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:19:16,209 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:19:16,209 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:19:16,210 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:19:16,210 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:19:16,210 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:19:16,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:19:16,213 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:19:16,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:19:16,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:19:16,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:19:16,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:19:16,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:19:16,214 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:19:16,214 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:19:16,215 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:19:16,215 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:19:16,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:19:16,215 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:19:16,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:19:16,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:19:16,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:19:16,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:19:16,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:19:16,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:19:16,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:19:16,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:19:16,218 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:19:16,218 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:19:16,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:19:16,218 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:19:16,219 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:19:16,219 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_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d7cb37edef68135cf37fb72c0f8e748b042580b [2021-10-16 02:19:16,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:19:16,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:19:16,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:19:16,677 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:19:16,678 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:19:16,679 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/array-crafted/bor5.i [2021-10-16 02:19:16,772 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/data/29f776c82/5daa8cd94e65481eb9c22fc13f32f58a/FLAGcf6dd92ca [2021-10-16 02:19:17,305 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:19:17,311 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/sv-benchmarks/c/array-crafted/bor5.i [2021-10-16 02:19:17,318 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/data/29f776c82/5daa8cd94e65481eb9c22fc13f32f58a/FLAGcf6dd92ca [2021-10-16 02:19:17,651 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/data/29f776c82/5daa8cd94e65481eb9c22fc13f32f58a [2021-10-16 02:19:17,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:19:17,659 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:19:17,663 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:19:17,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:19:17,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:19:17,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:19:17" (1/1) ... [2021-10-16 02:19:17,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e6f5dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:17, skipping insertion in model container [2021-10-16 02:19:17,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:19:17" (1/1) ... [2021-10-16 02:19:17,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:19:17,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:19:17,922 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/sv-benchmarks/c/array-crafted/bor5.i[1364,1377] [2021-10-16 02:19:17,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:19:17,935 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:19:18,000 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/sv-benchmarks/c/array-crafted/bor5.i[1364,1377] [2021-10-16 02:19:18,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:19:18,015 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:19:18,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:18 WrapperNode [2021-10-16 02:19:18,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:19:18,017 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:19:18,017 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:19:18,017 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:19:18,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:18" (1/1) ... [2021-10-16 02:19:18,034 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:18" (1/1) ... [2021-10-16 02:19:18,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:19:18,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:19:18,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:19:18,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:19:18,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:18" (1/1) ... [2021-10-16 02:19:18,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:18" (1/1) ... [2021-10-16 02:19:18,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:18" (1/1) ... [2021-10-16 02:19:18,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:18" (1/1) ... [2021-10-16 02:19:18,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:18" (1/1) ... [2021-10-16 02:19:18,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:18" (1/1) ... [2021-10-16 02:19:18,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:18" (1/1) ... [2021-10-16 02:19:18,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:19:18,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:19:18,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:19:18,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:19:18,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:18" (1/1) ... [2021-10-16 02:19:18,100 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:19:18,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:19:18,125 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:19:18,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:19:18,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:19:18,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:19:18,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 02:19:18,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:19:18,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:19:18,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:19:18,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-16 02:19:18,637 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:19:18,638 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-16 02:19:18,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:19:18 BoogieIcfgContainer [2021-10-16 02:19:18,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:19:18,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:19:18,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:19:18,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:19:18,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:19:17" (1/3) ... [2021-10-16 02:19:18,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e785850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:19:18, skipping insertion in model container [2021-10-16 02:19:18,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:19:18" (2/3) ... [2021-10-16 02:19:18,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e785850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:19:18, skipping insertion in model container [2021-10-16 02:19:18,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:19:18" (3/3) ... [2021-10-16 02:19:18,648 INFO L111 eAbstractionObserver]: Analyzing ICFG bor5.i [2021-10-16 02:19:18,653 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:19:18,653 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 02:19:18,707 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:19:18,714 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:19:18,730 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 02:19:18,764 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:19:18,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-16 02:19:18,771 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:19:18,772 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:19:18,772 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:19:18,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:19:18,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1563818866, now seen corresponding path program 1 times [2021-10-16 02:19:18,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:19:18,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1642655354] [2021-10-16 02:19:18,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:19:18,823 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:19:18,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:19:18,830 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:19:18,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:19:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:19:18,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 02:19:18,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:19:19,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:19:19,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:19:19,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:19:19,184 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:19:19,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1642655354] [2021-10-16 02:19:19,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1642655354] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:19:19,186 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:19:19,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:19:19,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600869256] [2021-10-16 02:19:19,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:19:19,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:19:19,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:19:19,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:19:19,220 INFO L87 Difference]: Start difference. First operand has 29 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:19:19,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:19:19,242 INFO L93 Difference]: Finished difference Result 53 states and 72 transitions. [2021-10-16 02:19:19,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:19:19,244 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-16 02:19:19,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:19:19,252 INFO L225 Difference]: With dead ends: 53 [2021-10-16 02:19:19,252 INFO L226 Difference]: Without dead ends: 24 [2021-10-16 02:19:19,255 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:19:19,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-16 02:19:19,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-16 02:19:19,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:19:19,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-10-16 02:19:19,294 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 18 [2021-10-16 02:19:19,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:19:19,294 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-10-16 02:19:19,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:19:19,296 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-10-16 02:19:19,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-16 02:19:19,297 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:19:19,297 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:19:19,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:19:19,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:19:19,511 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:19:19,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:19:19,512 INFO L82 PathProgramCache]: Analyzing trace with hash -2019195128, now seen corresponding path program 1 times [2021-10-16 02:19:19,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:19:19,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804343742] [2021-10-16 02:19:19,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:19:19,513 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:19:19,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:19:19,515 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:19:19,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:19:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:19:19,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:19:19,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:19:19,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:19:19,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:19:19,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:19:19,846 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:19:19,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804343742] [2021-10-16 02:19:19,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804343742] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:19:19,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:19:19,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 02:19:19,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270577709] [2021-10-16 02:19:19,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:19:19,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:19:19,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:19:19,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:19:19,857 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:19:19,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:19:19,957 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2021-10-16 02:19:19,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:19:19,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-16 02:19:19,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:19:19,960 INFO L225 Difference]: With dead ends: 46 [2021-10-16 02:19:19,960 INFO L226 Difference]: Without dead ends: 27 [2021-10-16 02:19:19,961 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:19:19,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-16 02:19:19,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-16 02:19:19,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:19:19,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-10-16 02:19:19,968 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 18 [2021-10-16 02:19:19,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:19:19,968 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-10-16 02:19:19,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:19:19,969 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-10-16 02:19:19,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-16 02:19:19,970 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:19:19,970 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:19:19,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:19:20,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:19:20,183 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:19:20,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:19:20,184 INFO L82 PathProgramCache]: Analyzing trace with hash -524663612, now seen corresponding path program 1 times [2021-10-16 02:19:20,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:19:20,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593895053] [2021-10-16 02:19:20,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:19:20,186 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:19:20,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:19:20,190 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:19:20,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:19:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:19:20,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:19:20,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:19:20,519 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:19:20,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:19:20,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:19:20,797 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:19:20,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [593895053] [2021-10-16 02:19:20,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [593895053] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:19:20,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2048159304] [2021-10-16 02:19:20,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:19:20,798 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:19:20,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:19:20,804 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:19:20,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-16 02:19:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:19:20,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:19:20,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:19:21,101 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:19:21,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:19:21,200 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:19:21,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2048159304] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:19:21,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133784762] [2021-10-16 02:19:21,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:19:21,201 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:19:21,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:19:21,207 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:19:21,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-16 02:19:21,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:19:21,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 02:19:21,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:19:21,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 02:19:21,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:19:21,507 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 02:19:21,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133784762] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:19:21,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-10-16 02:19:21,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [7, 7, 7, 7] total 13 [2021-10-16 02:19:21,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114150493] [2021-10-16 02:19:21,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 02:19:21,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:19:21,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 02:19:21,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-16 02:19:21,510 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:19:21,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:19:21,629 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2021-10-16 02:19:21,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:19:21,631 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-16 02:19:21,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:19:21,631 INFO L225 Difference]: With dead ends: 49 [2021-10-16 02:19:21,632 INFO L226 Difference]: Without dead ends: 33 [2021-10-16 02:19:21,632 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 210.2ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-10-16 02:19:21,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-16 02:19:21,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2021-10-16 02:19:21,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:19:21,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2021-10-16 02:19:21,636 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 22 [2021-10-16 02:19:21,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:19:21,637 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-10-16 02:19:21,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:19:21,637 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2021-10-16 02:19:21,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-16 02:19:21,638 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:19:21,638 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:19:21,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:19:21,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2021-10-16 02:19:22,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:19:22,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:19:22,239 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:19:22,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:19:22,239 INFO L82 PathProgramCache]: Analyzing trace with hash -187943454, now seen corresponding path program 1 times [2021-10-16 02:19:22,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:19:22,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [677896319] [2021-10-16 02:19:22,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:19:22,240 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:19:22,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:19:22,241 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:19:22,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:19:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:19:22,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:19:22,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:19:22,628 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:19:22,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:19:22,958 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:19:22,958 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:19:22,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [677896319] [2021-10-16 02:19:22,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [677896319] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:19:22,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [356977590] [2021-10-16 02:19:22,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:19:22,960 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:19:22,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:19:22,961 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:19:22,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-16 02:19:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:19:23,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 02:19:23,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:19:23,390 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:19:23,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:19:23,547 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:19:23,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [356977590] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:19:23,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022441064] [2021-10-16 02:19:23,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:19:23,547 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:19:23,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:19:23,549 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:19:23,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-16 02:19:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:19:23,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-16 02:19:23,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:19:23,937 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-16 02:19:23,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:19:24,180 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-16 02:19:24,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022441064] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:19:24,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:19:24,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 6] total 17 [2021-10-16 02:19:24,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848567348] [2021-10-16 02:19:24,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-16 02:19:24,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:19:24,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-16 02:19:24,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2021-10-16 02:19:24,183 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:19:24,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:19:24,874 INFO L93 Difference]: Finished difference Result 107 states and 126 transitions. [2021-10-16 02:19:24,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-16 02:19:24,875 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-16 02:19:24,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:19:24,877 INFO L225 Difference]: With dead ends: 107 [2021-10-16 02:19:24,877 INFO L226 Difference]: Without dead ends: 87 [2021-10-16 02:19:24,878 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 557.3ms TimeCoverageRelationStatistics Valid=234, Invalid=468, Unknown=0, NotChecked=0, Total=702 [2021-10-16 02:19:24,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-10-16 02:19:24,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 55. [2021-10-16 02:19:24,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.1666666666666667) internal successors, (63), 54 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:19:24,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2021-10-16 02:19:24,890 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 28 [2021-10-16 02:19:24,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:19:24,890 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2021-10-16 02:19:24,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:19:24,891 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2021-10-16 02:19:24,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-16 02:19:24,892 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:19:24,892 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:19:24,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:19:25,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:19:25,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-10-16 02:19:25,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:19:25,512 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:19:25,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:19:25,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1519457344, now seen corresponding path program 1 times [2021-10-16 02:19:25,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:19:25,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044424648] [2021-10-16 02:19:25,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:19:25,514 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:19:25,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:19:25,514 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:19:25,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-16 02:19:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:19:25,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-16 02:19:25,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:19:26,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:19:26,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2021-10-16 02:19:26,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:19:26,780 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:19:26,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 36 [2021-10-16 02:19:27,023 INFO L354 Elim1Store]: treesize reduction 56, result has 11.1 percent of original size [2021-10-16 02:19:27,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 45 [2021-10-16 02:19:27,196 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-10-16 02:19:27,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 34 [2021-10-16 02:19:27,682 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:19:27,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:19:30,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 111 [2021-10-16 02:19:30,351 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-16 02:19:30,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 212 treesize of output 156 [2021-10-16 02:19:30,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2021-10-16 02:19:30,412 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-16 02:19:30,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 1 [2021-10-16 02:19:31,075 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:19:31,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044424648] [2021-10-16 02:19:31,085 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-10-16 02:19:31,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [259199730] [2021-10-16 02:19:31,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:19:31,086 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:19:31,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:19:31,090 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:19:31,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-16 02:19:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:19:31,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-16 02:19:31,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:19:31,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-16 02:19:31,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:19:31,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2021-10-16 02:19:32,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:19:32,139 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:19:32,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 36 [2021-10-16 02:19:32,339 INFO L354 Elim1Store]: treesize reduction 56, result has 11.1 percent of original size [2021-10-16 02:19:32,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 45 [2021-10-16 02:19:32,401 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-10-16 02:19:32,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 34 [2021-10-16 02:19:32,696 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:19:32,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:19:38,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 255 treesize of output 223 [2021-10-16 02:19:38,629 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-16 02:19:38,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 714 treesize of output 588 [2021-10-16 02:19:40,722 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-10-16 02:19:40,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9207743] [2021-10-16 02:19:40,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:19:40,723 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:19:40,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:19:40,724 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:19:40,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-16 02:19:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:19:41,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-16 02:19:41,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:19:42,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:19:42,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2021-10-16 02:19:43,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:19:43,330 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:19:43,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 36 [2021-10-16 02:19:43,521 INFO L354 Elim1Store]: treesize reduction 56, result has 11.1 percent of original size [2021-10-16 02:19:43,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 45 [2021-10-16 02:19:43,588 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-10-16 02:19:43,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 34 [2021-10-16 02:19:43,836 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-16 02:19:43,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:19:46,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 111 [2021-10-16 02:19:46,437 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-16 02:19:46,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 249 treesize of output 183 [2021-10-16 02:19:46,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2021-10-16 02:19:46,497 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-16 02:19:46,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 1 [2021-10-16 02:19:46,735 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-10-16 02:19:46,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:19:46,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-16 02:19:46,735 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-16 02:19:46,736 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-16 02:19:46,742 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:19:46,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:19:46,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:19:47,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-16 02:19:47,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5521ffd-9ec1-4d8a-9fae-282325fc0867/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:19:47,353 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:19:47,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:19:47 BoogieIcfgContainer [2021-10-16 02:19:47,380 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:19:47,381 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:19:47,381 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:19:47,381 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:19:47,390 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:19:18" (3/4) ... [2021-10-16 02:19:47,394 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 02:19:47,396 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:19:47,398 INFO L168 Benchmark]: Toolchain (without parser) took 29737.71 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 48.7 MB in the beginning and 39.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 24.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:19:47,399 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 69.2 MB. Free memory is still 49.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:19:47,400 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.85 ms. Allocated memory is still 69.2 MB. Free memory was 48.5 MB in the beginning and 51.0 MB in the end (delta: -2.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:19:47,400 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.23 ms. Allocated memory is still 69.2 MB. Free memory was 51.0 MB in the beginning and 49.2 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:19:47,400 INFO L168 Benchmark]: Boogie Preprocessor took 32.18 ms. Allocated memory is still 69.2 MB. Free memory was 49.2 MB in the beginning and 47.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:19:47,402 INFO L168 Benchmark]: RCFGBuilder took 548.15 ms. Allocated memory is still 69.2 MB. Free memory was 47.6 MB in the beginning and 35.3 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:19:47,403 INFO L168 Benchmark]: TraceAbstraction took 28738.92 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 34.8 MB in the beginning and 39.3 MB in the end (delta: -4.5 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:19:47,403 INFO L168 Benchmark]: Witness Printer took 15.48 ms. Allocated memory is still 83.9 MB. Free memory is still 39.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:19:47,408 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 69.2 MB. Free memory is still 49.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 352.85 ms. Allocated memory is still 69.2 MB. Free memory was 48.5 MB in the beginning and 51.0 MB in the end (delta: -2.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.23 ms. Allocated memory is still 69.2 MB. Free memory was 51.0 MB in the beginning and 49.2 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.18 ms. Allocated memory is still 69.2 MB. Free memory was 49.2 MB in the beginning and 47.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 548.15 ms. Allocated memory is still 69.2 MB. Free memory was 47.6 MB in the beginning and 35.3 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 28738.92 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 34.8 MB in the beginning and 39.3 MB in the end (delta: -4.5 MB). Peak memory consumption was 13.0 MB. Max. memory is 16.1 GB. * Witness Printer took 15.48 ms. Allocated memory is still 83.9 MB. Free memory is still 39.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 57]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int N; [L32] N = __VERIFIER_nondet_int() [L33] COND TRUE N > 1 [L34] int x[N]; [L35] int temp; [L36] int ret; [L37] int ret2; [L38] int ret5; [L40] int i = 0; [L40] COND TRUE i < N [L42] x[i] = __VERIFIER_nondet_int() [L40] i++ [L40] COND TRUE i < N [L42] x[i] = __VERIFIER_nondet_int() [L40] i++ [L40] COND FALSE !(i < N) [L21] int i; [L22] long long res; [L23] EXPR x[0] [L23] res = x[0] [L24] i = 1 [L24] COND TRUE i < N [L25] EXPR x[i] [L25] res = res | x[i] [L24] i++ [L24] COND FALSE !(i < N) [L27] return res; [L45] ret = bor(x) [L47] EXPR x[0] [L47] temp=x[0] [L47] EXPR x[1] [L47] x[0] = x[1] [L47] x[1] = temp [L21] int i; [L22] long long res; [L23] EXPR x[0] [L23] res = x[0] [L24] i = 1 [L24] COND TRUE i < N [L25] EXPR x[i] [L25] res = res | x[i] [L24] i++ [L24] COND FALSE !(i < N) [L27] return res; [L48] ret2 = bor(x) [L49] EXPR x[0] [L49] temp=x[0] [L50] int i =0 ; [L50] COND TRUE i