./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/verifythis/lcp.c --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_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/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_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/verifythis/lcp.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/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_7ef348f1-3df0-49b8-869c-078b3c444fe5/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 99469a4d9e5d9407366653a2d47248a07b3d0735 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/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_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/verifythis/lcp.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/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_7ef348f1-3df0-49b8-869c-078b3c444fe5/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 99469a4d9e5d9407366653a2d47248a07b3d0735 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (const (_ BitVec 32) (Array (_ BitVec 32) (_ BitVec 32))) not yet implemented, please contact Matthias --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:26:05,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:26:05,377 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:26:05,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:26:05,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:26:05,464 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:26:05,466 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:26:05,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:26:05,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:26:05,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:26:05,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:26:05,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:26:05,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:26:05,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:26:05,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:26:05,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:26:05,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:26:05,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:26:05,511 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:26:05,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:26:05,524 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:26:05,526 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:26:05,530 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:26:05,531 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:26:05,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:26:05,543 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:26:05,543 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:26:05,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:26:05,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:26:05,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:26:05,549 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:26:05,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:26:05,552 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:26:05,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:26:05,556 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:26:05,556 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:26:05,557 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:26:05,557 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:26:05,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:26:05,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:26:05,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:26:05,561 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:26:05,617 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:26:05,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:26:05,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:26:05,619 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:26:05,619 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:26:05,620 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:26:05,620 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:26:05,620 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:26:05,627 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:26:05,627 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:26:05,628 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:26:05,629 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:26:05,629 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:26:05,629 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:26:05,629 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:26:05,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:26:05,631 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:26:05,631 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:26:05,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:26:05,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:26:05,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:26:05,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:26:05,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:26:05,632 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:26:05,633 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:26:05,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:26:05,633 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:26:05,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:26:05,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:26:05,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:26:05,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:26:05,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:26:05,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:26:05,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:26:05,637 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:26:05,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:26:05,637 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:26:05,637 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:26:05,637 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:26:05,638 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_7ef348f1-3df0-49b8-869c-078b3c444fe5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99469a4d9e5d9407366653a2d47248a07b3d0735 [2021-10-16 02:26:05,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:26:05,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:26:06,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:26:06,004 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:26:06,005 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:26:06,006 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/verifythis/lcp.c [2021-10-16 02:26:06,074 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/data/a50481ead/ceeb2f1a3fc14231a50188b040f30e79/FLAG1aeef4f99 [2021-10-16 02:26:06,594 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:26:06,595 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/sv-benchmarks/c/verifythis/lcp.c [2021-10-16 02:26:06,606 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/data/a50481ead/ceeb2f1a3fc14231a50188b040f30e79/FLAG1aeef4f99 [2021-10-16 02:26:06,932 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/data/a50481ead/ceeb2f1a3fc14231a50188b040f30e79 [2021-10-16 02:26:06,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:26:06,937 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:26:06,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:26:06,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:26:06,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:26:06,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:26:06" (1/1) ... [2021-10-16 02:26:06,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54edec4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:06, skipping insertion in model container [2021-10-16 02:26:06,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:26:06" (1/1) ... [2021-10-16 02:26:06,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:26:06,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:26:07,117 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_7ef348f1-3df0-49b8-869c-078b3c444fe5/sv-benchmarks/c/verifythis/lcp.c[515,528] [2021-10-16 02:26:07,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:26:07,153 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:26:07,168 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_7ef348f1-3df0-49b8-869c-078b3c444fe5/sv-benchmarks/c/verifythis/lcp.c[515,528] [2021-10-16 02:26:07,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:26:07,195 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:26:07,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:07 WrapperNode [2021-10-16 02:26:07,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:26:07,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:26:07,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:26:07,198 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:26:07,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:07" (1/1) ... [2021-10-16 02:26:07,217 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:07" (1/1) ... [2021-10-16 02:26:07,250 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:26:07,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:26:07,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:26:07,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:26:07,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:07" (1/1) ... [2021-10-16 02:26:07,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:07" (1/1) ... [2021-10-16 02:26:07,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:07" (1/1) ... [2021-10-16 02:26:07,267 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:07" (1/1) ... [2021-10-16 02:26:07,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:07" (1/1) ... [2021-10-16 02:26:07,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:07" (1/1) ... [2021-10-16 02:26:07,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:07" (1/1) ... [2021-10-16 02:26:07,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:26:07,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:26:07,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:26:07,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:26:07,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:07" (1/1) ... [2021-10-16 02:26:07,312 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:26:07,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:26:07,355 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:26:07,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:26:07,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:26:07,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:26:07,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 02:26:07,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:26:07,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:26:07,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 02:26:07,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:26:07,974 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:26:07,974 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-10-16 02:26:07,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:26:07 BoogieIcfgContainer [2021-10-16 02:26:07,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:26:07,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:26:07,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:26:07,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:26:07,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:26:06" (1/3) ... [2021-10-16 02:26:07,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618952fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:26:07, skipping insertion in model container [2021-10-16 02:26:07,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:07" (2/3) ... [2021-10-16 02:26:07,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618952fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:26:07, skipping insertion in model container [2021-10-16 02:26:07,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:26:07" (3/3) ... [2021-10-16 02:26:07,985 INFO L111 eAbstractionObserver]: Analyzing ICFG lcp.c [2021-10-16 02:26:07,991 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:26:07,991 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-16 02:26:08,049 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:26:08,057 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 02:26:08,058 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-16 02:26:08,075 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 12 states have (on average 1.5833333333333333) 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 02:26:08,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 02:26:08,082 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:26:08,082 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 02:26:08,083 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:26:08,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:26:08,097 INFO L82 PathProgramCache]: Analyzing trace with hash 111060527, now seen corresponding path program 1 times [2021-10-16 02:26:08,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:26:08,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53465020] [2021-10-16 02:26:08,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:08,114 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:26:08,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:26:08,412 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 02:26:08,413 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:26:08,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53465020] [2021-10-16 02:26:08,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53465020] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:26:08,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:26:08,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:26:08,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977624335] [2021-10-16 02:26:08,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:26:08,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:26:08,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:26:08,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:26:08,453 INFO L87 Difference]: Start difference. First operand has 15 states, 12 states have (on average 1.5833333333333333) 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) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 02:26:08,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:26:08,470 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2021-10-16 02:26:08,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:26:08,472 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-10-16 02:26:08,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:26:08,481 INFO L225 Difference]: With dead ends: 27 [2021-10-16 02:26:08,482 INFO L226 Difference]: Without dead ends: 12 [2021-10-16 02:26:08,485 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:26:08,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-16 02:26:08,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-16 02:26:08,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 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 02:26:08,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-16 02:26:08,526 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 5 [2021-10-16 02:26:08,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:26:08,527 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-16 02:26:08,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 02:26:08,529 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-16 02:26:08,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 02:26:08,530 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:26:08,530 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 02:26:08,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:26:08,531 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:26:08,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:26:08,538 INFO L82 PathProgramCache]: Analyzing trace with hash -811327241, now seen corresponding path program 1 times [2021-10-16 02:26:08,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:26:08,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179099261] [2021-10-16 02:26:08,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:08,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:26:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:26:08,775 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 02:26:08,775 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:26:08,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179099261] [2021-10-16 02:26:08,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179099261] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:26:08,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:26:08,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:26:08,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641066257] [2021-10-16 02:26:08,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:26:08,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:26:08,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:26:08,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:26:08,780 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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 02:26:08,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:26:08,821 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2021-10-16 02:26:08,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 02:26:08,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2021-10-16 02:26:08,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:26:08,823 INFO L225 Difference]: With dead ends: 12 [2021-10-16 02:26:08,823 INFO L226 Difference]: Without dead ends: 10 [2021-10-16 02:26:08,824 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:26:08,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-16 02:26:08,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-16 02:26:08,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 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 02:26:08,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-16 02:26:08,829 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2021-10-16 02:26:08,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:26:08,831 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-16 02:26:08,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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 02:26:08,833 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-16 02:26:08,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 02:26:08,834 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:26:08,834 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:26:08,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:26:08,837 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:26:08,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:26:08,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1830006980, now seen corresponding path program 1 times [2021-10-16 02:26:08,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:26:08,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675213972] [2021-10-16 02:26:08,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:08,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:26:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:26:09,103 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 02:26:09,103 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:26:09,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675213972] [2021-10-16 02:26:09,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675213972] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:26:09,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:26:09,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-16 02:26:09,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659928069] [2021-10-16 02:26:09,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 02:26:09,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:26:09,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 02:26:09,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-16 02:26:09,112 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 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 02:26:09,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:26:09,210 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-10-16 02:26:09,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:26:09,210 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 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 02:26:09,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:26:09,211 INFO L225 Difference]: With dead ends: 19 [2021-10-16 02:26:09,211 INFO L226 Difference]: Without dead ends: 12 [2021-10-16 02:26:09,212 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 102.8ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-16 02:26:09,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-16 02:26:09,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-16 02:26:09,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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 02:26:09,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-16 02:26:09,216 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2021-10-16 02:26:09,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:26:09,216 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-16 02:26:09,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 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 02:26:09,217 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-16 02:26:09,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 02:26:09,217 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:26:09,218 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:26:09,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-16 02:26:09,218 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:26:09,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:26:09,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1473238764, now seen corresponding path program 1 times [2021-10-16 02:26:09,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:26:09,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535111762] [2021-10-16 02:26:09,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:09,220 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:26:09,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:26:09,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:26:09,369 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:26:09,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535111762] [2021-10-16 02:26:09,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535111762] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:26:09,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544519242] [2021-10-16 02:26:09,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:09,370 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:26:09,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:26:09,385 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:26:09,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:26:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:26:09,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-16 02:26:09,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:26:09,597 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 7 treesize of output 6 [2021-10-16 02:26:09,824 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 98 treesize of output 92 [2021-10-16 02:26:10,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:26:10,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:26:10,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-16 02:26:10,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544519242] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:26:10,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [868475196] [2021-10-16 02:26:10,699 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-16 02:26:10,700 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:26:10,712 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:26:10,718 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:26:10,719 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:26:10,795 INFO L180 QuantifierPusher]: treesize reduction 8, result has 97.6 percent of original size [2021-10-16 02:26:10,803 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:26:10,805 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:26:10,805 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-10-16 02:26:10,806 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:26:10,807 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:26:10,808 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-10-16 02:26:10,809 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:26:10,811 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:26:10,812 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-10-16 02:26:10,832 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 324 [2021-10-16 02:26:10,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:26:10,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:26:10,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:26:10,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 69 [2021-10-16 02:26:10,929 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:26:10,941 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-10-16 02:26:10,944 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:26:10,952 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-10-16 02:26:10,953 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 02:26:10,984 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:26:10,984 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:26:10,985 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:26:10,986 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:26:10,986 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:26:10,987 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-16 02:26:11,015 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:26:11,016 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:26:11,017 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:26:11,017 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:26:11,019 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:26:11,019 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-16 02:26:11,022 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:26:11,072 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:26:11,081 INFO L180 QuantifierPusher]: treesize reduction 10, result has 96.7 percent of original size [2021-10-16 02:26:11,090 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 293 [2021-10-16 02:26:11,091 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-16 02:26:11,091 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:909, output treesize:293 [2021-10-16 02:26:11,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:26:11,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:26:11,307 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_33| 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 02:26:11,311 INFO L168 Benchmark]: Toolchain (without parser) took 4373.79 ms. Allocated memory was 111.1 MB in the beginning and 155.2 MB in the end (delta: 44.0 MB). Free memory was 83.9 MB in the beginning and 101.7 MB in the end (delta: -17.8 MB). Peak memory consumption was 51.3 MB. Max. memory is 16.1 GB. [2021-10-16 02:26:11,312 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 86.0 MB. Free memory was 52.4 MB in the beginning and 52.3 MB in the end (delta: 39.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:26:11,312 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.92 ms. Allocated memory is still 111.1 MB. Free memory was 83.7 MB in the beginning and 73.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:26:11,313 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.26 ms. Allocated memory is still 111.1 MB. Free memory was 73.2 MB in the beginning and 71.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:26:11,313 INFO L168 Benchmark]: Boogie Preprocessor took 50.08 ms. Allocated memory is still 111.1 MB. Free memory was 71.3 MB in the beginning and 70.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:26:11,314 INFO L168 Benchmark]: RCFGBuilder took 674.59 ms. Allocated memory is still 111.1 MB. Free memory was 70.0 MB in the beginning and 48.7 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:26:11,314 INFO L168 Benchmark]: TraceAbstraction took 3331.44 ms. Allocated memory was 111.1 MB in the beginning and 155.2 MB in the end (delta: 44.0 MB). Free memory was 48.2 MB in the beginning and 101.7 MB in the end (delta: -53.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:26:11,319 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 86.0 MB. Free memory was 52.4 MB in the beginning and 52.3 MB in the end (delta: 39.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 257.92 ms. Allocated memory is still 111.1 MB. Free memory was 83.7 MB in the beginning and 73.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.26 ms. Allocated memory is still 111.1 MB. Free memory was 73.2 MB in the beginning and 71.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 50.08 ms. Allocated memory is still 111.1 MB. Free memory was 71.3 MB in the beginning and 70.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 674.59 ms. Allocated memory is still 111.1 MB. Free memory was 70.0 MB in the beginning and 48.7 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3331.44 ms. Allocated memory was 111.1 MB in the beginning and 155.2 MB in the end (delta: 44.0 MB). Free memory was 48.2 MB in the beginning and 101.7 MB in the end (delta: -53.5 MB). Peak memory consumption was 15.7 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_33| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_33|: 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 02:26:11,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/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 02:26:13,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:26:13,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:26:14,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:26:14,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:26:14,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:26:14,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:26:14,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:26:14,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:26:14,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:26:14,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:26:14,071 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:26:14,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:26:14,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:26:14,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:26:14,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:26:14,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:26:14,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:26:14,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:26:14,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:26:14,100 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:26:14,102 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:26:14,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:26:14,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:26:14,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:26:14,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:26:14,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:26:14,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:26:14,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:26:14,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:26:14,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:26:14,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:26:14,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:26:14,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:26:14,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:26:14,123 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:26:14,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:26:14,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:26:14,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:26:14,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:26:14,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:26:14,128 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:26:14,171 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:26:14,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:26:14,172 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:26:14,172 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:26:14,173 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:26:14,173 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:26:14,173 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:26:14,173 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:26:14,174 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:26:14,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:26:14,179 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:26:14,179 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:26:14,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:26:14,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:26:14,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:26:14,180 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:26:14,180 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:26:14,181 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:26:14,181 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:26:14,181 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:26:14,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:26:14,181 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:26:14,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:26:14,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:26:14,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:26:14,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:26:14,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:26:14,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:26:14,183 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:26:14,183 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:26:14,183 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:26:14,184 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:26:14,184 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:26:14,184 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:26:14,185 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:26:14,185 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_7ef348f1-3df0-49b8-869c-078b3c444fe5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99469a4d9e5d9407366653a2d47248a07b3d0735 [2021-10-16 02:26:14,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:26:14,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:26:14,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:26:14,685 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:26:14,686 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:26:14,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/verifythis/lcp.c [2021-10-16 02:26:14,779 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/data/1b1d85a0f/950efd0fe01d460c9998e2336b43795d/FLAG7625fa83f [2021-10-16 02:26:15,458 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:26:15,460 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/sv-benchmarks/c/verifythis/lcp.c [2021-10-16 02:26:15,470 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/data/1b1d85a0f/950efd0fe01d460c9998e2336b43795d/FLAG7625fa83f [2021-10-16 02:26:15,790 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/data/1b1d85a0f/950efd0fe01d460c9998e2336b43795d [2021-10-16 02:26:15,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:26:15,795 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:26:15,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:26:15,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:26:15,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:26:15,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:26:15" (1/1) ... [2021-10-16 02:26:15,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e845a10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:15, skipping insertion in model container [2021-10-16 02:26:15,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:26:15" (1/1) ... [2021-10-16 02:26:15,813 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:26:15,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:26:15,977 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_7ef348f1-3df0-49b8-869c-078b3c444fe5/sv-benchmarks/c/verifythis/lcp.c[515,528] [2021-10-16 02:26:16,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:26:16,019 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:26:16,072 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_7ef348f1-3df0-49b8-869c-078b3c444fe5/sv-benchmarks/c/verifythis/lcp.c[515,528] [2021-10-16 02:26:16,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:26:16,117 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:26:16,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:16 WrapperNode [2021-10-16 02:26:16,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:26:16,119 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:26:16,119 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:26:16,119 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:26:16,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:16" (1/1) ... [2021-10-16 02:26:16,137 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:16" (1/1) ... [2021-10-16 02:26:16,178 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:26:16,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:26:16,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:26:16,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:26:16,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:16" (1/1) ... [2021-10-16 02:26:16,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:16" (1/1) ... [2021-10-16 02:26:16,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:16" (1/1) ... [2021-10-16 02:26:16,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:16" (1/1) ... [2021-10-16 02:26:16,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:16" (1/1) ... [2021-10-16 02:26:16,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:16" (1/1) ... [2021-10-16 02:26:16,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:16" (1/1) ... [2021-10-16 02:26:16,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:26:16,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:26:16,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:26:16,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:26:16,257 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:16" (1/1) ... [2021-10-16 02:26:16,266 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:26:16,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:26:16,294 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:26:16,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:26:16,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:26:16,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:26:16,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-16 02:26:16,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 02:26:16,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:26:16,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:26:16,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:26:16,792 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:26:16,806 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-10-16 02:26:16,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:26:16 BoogieIcfgContainer [2021-10-16 02:26:16,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:26:16,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:26:16,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:26:16,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:26:16,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:26:15" (1/3) ... [2021-10-16 02:26:16,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72130139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:26:16, skipping insertion in model container [2021-10-16 02:26:16,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:26:16" (2/3) ... [2021-10-16 02:26:16,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72130139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:26:16, skipping insertion in model container [2021-10-16 02:26:16,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:26:16" (3/3) ... [2021-10-16 02:26:16,832 INFO L111 eAbstractionObserver]: Analyzing ICFG lcp.c [2021-10-16 02:26:16,839 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:26:16,839 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-16 02:26:16,899 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:26:16,907 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 02:26:16,907 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-16 02:26:16,924 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 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 02:26:16,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-16 02:26:16,930 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:26:16,931 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:26:16,932 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:26:16,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:26:16,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1579702917, now seen corresponding path program 1 times [2021-10-16 02:26:16,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:26:16,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [982057994] [2021-10-16 02:26:16,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:16,955 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:26:16,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:26:16,970 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:26:16,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:26:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:26:17,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 02:26:17,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:26:17,264 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 02:26:17,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:26:17,332 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 02:26:17,333 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:26:17,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [982057994] [2021-10-16 02:26:17,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [982057994] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:26:17,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:26:17,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:26:17,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700722163] [2021-10-16 02:26:17,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:26:17,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:26:17,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:26:17,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:26:17,357 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 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 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 02:26:17,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:26:17,372 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2021-10-16 02:26:17,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:26:17,374 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 14 [2021-10-16 02:26:17,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:26:17,388 INFO L225 Difference]: With dead ends: 51 [2021-10-16 02:26:17,388 INFO L226 Difference]: Without dead ends: 22 [2021-10-16 02:26:17,391 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 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 02:26:17,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-16 02:26:17,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-16 02:26:17,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 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 02:26:17,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-10-16 02:26:17,420 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 14 [2021-10-16 02:26:17,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:26:17,421 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-10-16 02:26:17,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 02:26:17,421 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-10-16 02:26:17,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-16 02:26:17,422 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:26:17,422 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:26:17,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:26:17,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:26:17,636 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:26:17,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:26:17,644 INFO L82 PathProgramCache]: Analyzing trace with hash 588290746, now seen corresponding path program 1 times [2021-10-16 02:26:17,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:26:17,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675731476] [2021-10-16 02:26:17,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:17,646 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:26:17,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:26:17,648 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:26:17,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:26:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:26:17,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 02:26:17,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:26:17,919 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 02:26:17,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:26:18,071 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 02:26:18,072 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:26:18,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675731476] [2021-10-16 02:26:18,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675731476] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:26:18,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:26:18,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-16 02:26:18,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511031406] [2021-10-16 02:26:18,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 02:26:18,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:26:18,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 02:26:18,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-16 02:26:18,078 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 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 02:26:18,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:26:18,240 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2021-10-16 02:26:18,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:26:18,242 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 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 16 [2021-10-16 02:26:18,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:26:18,243 INFO L225 Difference]: With dead ends: 37 [2021-10-16 02:26:18,244 INFO L226 Difference]: Without dead ends: 25 [2021-10-16 02:26:18,245 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 68.3ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-16 02:26:18,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-16 02:26:18,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-16 02:26:18,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 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 02:26:18,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-10-16 02:26:18,259 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 16 [2021-10-16 02:26:18,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:26:18,260 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-10-16 02:26:18,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 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 02:26:18,261 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-10-16 02:26:18,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-16 02:26:18,263 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:26:18,264 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:26:18,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:26:18,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:26:18,475 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:26:18,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:26:18,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1407848843, now seen corresponding path program 1 times [2021-10-16 02:26:18,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:26:18,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [316345877] [2021-10-16 02:26:18,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:18,477 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:26:18,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:26:18,478 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:26:18,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:26:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:26:18,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-16 02:26:18,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:26:19,576 INFO L354 Elim1Store]: treesize reduction 90, result has 7.2 percent of original size [2021-10-16 02:26:19,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 32 [2021-10-16 02:26:19,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:26:19,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:26:33,375 INFO L354 Elim1Store]: treesize reduction 37, result has 74.5 percent of original size [2021-10-16 02:26:33,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 125 [2021-10-16 02:26:33,578 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:26:33,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [316345877] [2021-10-16 02:26:33,579 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-10-16 02:26:33,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [113932933] [2021-10-16 02:26:33,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:33,580 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:26:33,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:26:33,588 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:26:33,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-16 02:26:33,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:26:33,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:26:33,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:26:33,824 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 7 treesize of output 6 [2021-10-16 02:26:34,090 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 64 treesize of output 54 [2021-10-16 02:26:34,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:26:34,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:26:56,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:26:56,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [113932933] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:26:56,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350137059] [2021-10-16 02:26:56,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:56,286 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:26:56,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:26:56,303 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:26:56,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-16 02:26:56,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:26:56,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:26:56,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:26:56,467 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 7 treesize of output 6 [2021-10-16 02:26:56,575 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 64 treesize of output 54 [2021-10-16 02:26:56,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:26:56,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:26:56,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-16 02:26:56,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350137059] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:26:56,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2021-10-16 02:26:56,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6] total 9 [2021-10-16 02:26:56,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889508700] [2021-10-16 02:26:56,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 02:26:56,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:26:56,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 02:26:56,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=477, Unknown=16, NotChecked=0, Total=552 [2021-10-16 02:26:56,802 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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 02:26:57,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:26:57,025 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-10-16 02:26:57,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:26:57,026 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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 19 [2021-10-16 02:26:57,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:26:57,028 INFO L225 Difference]: With dead ends: 39 [2021-10-16 02:26:57,029 INFO L226 Difference]: Without dead ends: 27 [2021-10-16 02:26:57,029 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 35669.3ms TimeCoverageRelationStatistics Valid=94, Invalid=592, Unknown=16, NotChecked=0, Total=702 [2021-10-16 02:26:57,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-16 02:26:57,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-10-16 02:26:57,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 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 02:26:57,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-10-16 02:26:57,035 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 19 [2021-10-16 02:26:57,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:26:57,035 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-10-16 02:26:57,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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 02:26:57,036 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-10-16 02:26:57,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-16 02:26:57,037 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:26:57,037 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:26:57,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:26:57,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:26:57,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:26:57,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:26:57,651 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:26:57,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:26:57,651 INFO L82 PathProgramCache]: Analyzing trace with hash 598502217, now seen corresponding path program 1 times [2021-10-16 02:26:57,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:26:57,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [434803180] [2021-10-16 02:26:57,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:26:57,652 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:26:57,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:26:57,654 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:26:57,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 02:26:57,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:26:57,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-16 02:26:57,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:26:58,688 INFO L354 Elim1Store]: treesize reduction 90, result has 7.2 percent of original size [2021-10-16 02:26:58,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 32 [2021-10-16 02:26:58,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:26:58,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:27:12,463 INFO L354 Elim1Store]: treesize reduction 37, result has 74.5 percent of original size [2021-10-16 02:27:12,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 125 [2021-10-16 02:27:12,756 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:27:12,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [434803180] [2021-10-16 02:27:12,756 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-10-16 02:27:12,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [88661944] [2021-10-16 02:27:12,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:27:12,757 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:27:12,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:27:12,759 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:27:12,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-16 02:27:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:27:12,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:27:12,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:27:12,988 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 7 treesize of output 6 [2021-10-16 02:27:13,267 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 67 treesize of output 57 [2021-10-16 02:27:13,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:27:13,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:27:42,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-16 02:27:42,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [88661944] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:27:42,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:27:42,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-16 02:27:42,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471140063] [2021-10-16 02:27:42,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:27:42,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:27:42,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:27:42,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=428, Unknown=19, NotChecked=0, Total=506 [2021-10-16 02:27:42,104 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 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 02:27:42,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:27:42,296 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2021-10-16 02:27:42,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 02:27:42,297 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 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 19 [2021-10-16 02:27:42,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:27:42,297 INFO L225 Difference]: With dead ends: 25 [2021-10-16 02:27:42,297 INFO L226 Difference]: Without dead ends: 23 [2021-10-16 02:27:42,298 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 42252.0ms TimeCoverageRelationStatistics Valid=99, Invalid=532, Unknown=19, NotChecked=0, Total=650 [2021-10-16 02:27:42,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-16 02:27:42,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-16 02:27:42,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 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 02:27:42,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-10-16 02:27:42,302 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 19 [2021-10-16 02:27:42,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:27:42,302 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-10-16 02:27:42,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 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 02:27:42,302 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-10-16 02:27:42,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-16 02:27:42,303 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:27:42,303 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:27:42,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:27:42,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:27:42,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:27:42,704 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:27:42,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:27:42,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1574202674, now seen corresponding path program 1 times [2021-10-16 02:27:42,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:27:42,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695893639] [2021-10-16 02:27:42,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:27:42,705 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:27:42,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:27:42,707 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:27:42,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 02:27:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:27:43,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-16 02:27:43,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:27:45,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:27:45,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:27:47,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:27:47,561 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:27:47,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695893639] [2021-10-16 02:27:47,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [695893639] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:27:47,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1748415496] [2021-10-16 02:27:47,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:27:47,562 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:27:47,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:27:47,563 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:27:47,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-10-16 02:27:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:27:47,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-16 02:27:47,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:27:49,250 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:27:49,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:27:49,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:27:49,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1748415496] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:27:49,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428500092] [2021-10-16 02:27:49,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:27:49,822 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:27:49,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:27:49,827 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:27:49,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-16 02:27:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:27:50,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-16 02:27:50,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:27:53,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:27:53,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:27:57,216 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:27:57,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428500092] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:27:57,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:27:57,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 14, 10, 16, 11] total 41 [2021-10-16 02:27:57,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725914016] [2021-10-16 02:27:57,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-10-16 02:27:57,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:27:57,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-10-16 02:27:57,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=1371, Unknown=0, NotChecked=0, Total=1640 [2021-10-16 02:27:57,221 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 41 states, 41 states have (on average 1.6585365853658536) internal successors, (68), 41 states have internal predecessors, (68), 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 02:28:19,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:28:19,023 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2021-10-16 02:28:19,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-16 02:28:19,025 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.6585365853658536) internal successors, (68), 41 states have internal predecessors, (68), 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 02:28:19,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:28:19,025 INFO L225 Difference]: With dead ends: 72 [2021-10-16 02:28:19,025 INFO L226 Difference]: Without dead ends: 35 [2021-10-16 02:28:19,028 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1182 ImplicationChecksByTransitivity, 19480.5ms TimeCoverageRelationStatistics Valid=1003, Invalid=3689, Unknown=0, NotChecked=0, Total=4692 [2021-10-16 02:28:19,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-10-16 02:28:19,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2021-10-16 02:28:19,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 states have internal predecessors, (35), 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 02:28:19,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-10-16 02:28:19,034 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 22 [2021-10-16 02:28:19,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:28:19,034 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-10-16 02:28:19,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.6585365853658536) internal successors, (68), 41 states have internal predecessors, (68), 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 02:28:19,035 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-10-16 02:28:19,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-16 02:28:19,036 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:28:19,036 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:28:19,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 02:28:19,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-16 02:28:19,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-10-16 02:28:19,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt [2021-10-16 02:28:19,652 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:28:19,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:28:19,652 INFO L82 PathProgramCache]: Analyzing trace with hash -437965597, now seen corresponding path program 2 times [2021-10-16 02:28:19,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:28:19,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280805933] [2021-10-16 02:28:19,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:28:19,653 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:28:19,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:28:19,654 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:28:19,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-16 02:28:20,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-16 02:28:20,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:28:20,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-16 02:28:20,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:28:22,202 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-16 02:28:22,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:28:24,309 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-16 02:28:24,309 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:28:24,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280805933] [2021-10-16 02:28:24,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [280805933] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:28:24,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [273337561] [2021-10-16 02:28:24,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:28:24,310 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:28:24,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:28:24,316 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:28:24,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-10-16 02:28:24,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-16 02:28:24,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:28:24,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-16 02:28:24,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:28:25,885 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-16 02:28:25,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:28:27,399 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-16 02:28:27,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [273337561] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:28:27,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165325214] [2021-10-16 02:28:27,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 02:28:27,399 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:28:27,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:28:27,407 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:28:27,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-16 02:28:28,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-16 02:28:28,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 02:28:28,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-16 02:28:28,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:28:30,505 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-16 02:28:30,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:28:32,108 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-16 02:28:32,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165325214] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:28:32,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:28:32,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 12, 8, 13, 8] total 25 [2021-10-16 02:28:32,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872433595] [2021-10-16 02:28:32,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-16 02:28:32,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:28:32,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-16 02:28:32,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2021-10-16 02:28:32,110 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 25 states, 25 states have (on average 2.28) internal successors, (57), 25 states have internal predecessors, (57), 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 02:28:36,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:28:36,457 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2021-10-16 02:28:36,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-16 02:28:36,460 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.28) internal successors, (57), 25 states have internal predecessors, (57), 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 31 [2021-10-16 02:28:36,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:28:36,461 INFO L225 Difference]: With dead ends: 47 [2021-10-16 02:28:36,461 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:28:36,462 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 5970.3ms TimeCoverageRelationStatistics Valid=326, Invalid=1080, Unknown=0, NotChecked=0, Total=1406 [2021-10-16 02:28:36,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:28:36,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:28:36,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 02:28:36,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:28:36,463 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2021-10-16 02:28:36,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:28:36,463 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:28:36,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.28) internal successors, (57), 25 states have internal predecessors, (57), 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 02:28:36,464 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:28:36,464 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:28:36,466 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:28:36,467 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:28:36,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-16 02:28:36,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-10-16 02:28:36,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-10-16 02:28:37,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:28:37,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:28:37,075 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:28:37,192 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:28:37,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:28:40,082 INFO L857 garLoopResultBuilder]: For program point L31(lines 31 32) no Hoare annotation was computed. [2021-10-16 02:28:40,082 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-16 02:28:40,082 INFO L860 garLoopResultBuilder]: At program point L48(lines 35 49) the Hoare annotation is: true [2021-10-16 02:28:40,082 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:28:40,082 INFO L857 garLoopResultBuilder]: For program point L-1-1(line -1) no Hoare annotation was computed. [2021-10-16 02:28:40,082 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:28:40,082 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:28:40,083 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-16 02:28:40,083 INFO L857 garLoopResultBuilder]: For program point L24(lines 24 33) no Hoare annotation was computed. [2021-10-16 02:28:40,083 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 14) no Hoare annotation was computed. [2021-10-16 02:28:40,083 INFO L857 garLoopResultBuilder]: For program point L12-1(lines 12 14) no Hoare annotation was computed. [2021-10-16 02:28:40,083 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:28:40,083 INFO L853 garLoopResultBuilder]: At program point L21(lines 16 22) the Hoare annotation is: (or (let ((.cse0 ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)))) (and (bvslt ULTIMATE.start_main_~n~0 (_ bv1073741824 32)) (bvsge ULTIMATE.start_main_~n~0 (_ bv0 32)) (= .cse0 (select |#memory_int| ULTIMATE.start_main_~a~0.base)) (= (_ bv0 32) ULTIMATE.start_main_~a~0.offset) (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (or (not (bvslt (bvadd |ULTIMATE.start_lcp_#res| ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~n~0)) (not (bvslt (bvadd |ULTIMATE.start_lcp_#res| ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~n~0))) (= |ULTIMATE.start_main_#t~malloc18.offset| (_ bv0 32)) (bvsge ULTIMATE.start_main_~x~0 (_ bv0 32)) (= .cse0 (select |#memory_int| ULTIMATE.start_lcp_~a.base)) (bvsge ULTIMATE.start_main_~y~0 (_ bv0 32)) (= .cse0 (select |#memory_int| |ULTIMATE.start_main_#t~malloc18.base|)) (or (not (bvslt (bvadd ULTIMATE.start_lcp_~l~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~n~0)) (not (bvslt (bvadd ULTIMATE.start_lcp_~l~0 ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~n~0))))) (and (= |ULTIMATE.start_lcp_#res| (_ bv0 32)) (= ULTIMATE.start_lcp_~l~0 (_ bv0 32)))) [2021-10-16 02:28:40,083 INFO L857 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2021-10-16 02:28:40,083 INFO L857 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2021-10-16 02:28:40,083 INFO L857 garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed. [2021-10-16 02:28:40,083 INFO L857 garLoopResultBuilder]: For program point L13-4(line 13) no Hoare annotation was computed. [2021-10-16 02:28:40,083 INFO L857 garLoopResultBuilder]: For program point L5(lines 5 7) no Hoare annotation was computed. [2021-10-16 02:28:40,084 INFO L857 garLoopResultBuilder]: For program point L5-1(lines 5 7) no Hoare annotation was computed. [2021-10-16 02:28:40,084 INFO L857 garLoopResultBuilder]: For program point L5-2(lines 5 7) no Hoare annotation was computed. [2021-10-16 02:28:40,084 INFO L857 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-10-16 02:28:40,084 INFO L857 garLoopResultBuilder]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2021-10-16 02:28:40,084 INFO L853 garLoopResultBuilder]: At program point L18-5(lines 18 20) the Hoare annotation is: (let ((.cse0 ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)))) (and (bvslt ULTIMATE.start_main_~n~0 (_ bv1073741824 32)) (bvsge ULTIMATE.start_main_~n~0 (_ bv0 32)) (= ULTIMATE.start_lcp_~y ULTIMATE.start_main_~y~0) (= .cse0 (select |#memory_int| ULTIMATE.start_main_~a~0.base)) (= (_ bv0 32) ULTIMATE.start_main_~a~0.offset) (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (= |ULTIMATE.start_main_#t~malloc18.offset| (_ bv0 32)) (= ULTIMATE.start_lcp_~n ULTIMATE.start_main_~n~0) (= ULTIMATE.start_lcp_~x ULTIMATE.start_main_~x~0) (bvsge ULTIMATE.start_main_~x~0 (_ bv0 32)) (= .cse0 (select |#memory_int| ULTIMATE.start_lcp_~a.base)) (bvsge ULTIMATE.start_main_~y~0 (_ bv0 32)) (= .cse0 (select |#memory_int| |ULTIMATE.start_main_#t~malloc18.base|)))) [2021-10-16 02:28:40,084 INFO L857 garLoopResultBuilder]: For program point L18-6(lines 18 20) no Hoare annotation was computed. [2021-10-16 02:28:40,084 INFO L857 garLoopResultBuilder]: For program point L6(line 6) no Hoare annotation was computed. [2021-10-16 02:28:40,084 INFO L857 garLoopResultBuilder]: For program point L6-2(line 6) no Hoare annotation was computed. [2021-10-16 02:28:40,084 INFO L857 garLoopResultBuilder]: For program point L6-4(line 6) no Hoare annotation was computed. [2021-10-16 02:28:40,087 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:28:40,092 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (const (_ BitVec 32) (Array (_ BitVec 32) (_ BitVec 32))) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:452) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:192) 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 02:28:40,095 INFO L168 Benchmark]: Toolchain (without parser) took 144299.62 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 34.8 MB in the beginning and 37.1 MB in the end (delta: -2.2 MB). Peak memory consumption was 27.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:28:40,096 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 56.6 MB. Free memory is still 38.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:28:40,096 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.14 ms. Allocated memory is still 56.6 MB. Free memory was 34.6 MB in the beginning and 39.5 MB in the end (delta: -4.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:28:40,096 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.36 ms. Allocated memory is still 56.6 MB. Free memory was 39.5 MB in the beginning and 37.6 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:28:40,097 INFO L168 Benchmark]: Boogie Preprocessor took 74.03 ms. Allocated memory is still 56.6 MB. Free memory was 37.6 MB in the beginning and 36.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:28:40,097 INFO L168 Benchmark]: RCFGBuilder took 554.70 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 36.1 MB in the beginning and 51.2 MB in the end (delta: -15.0 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:28:40,098 INFO L168 Benchmark]: TraceAbstraction took 143283.04 ms. Allocated memory is still 69.2 MB. Free memory was 50.7 MB in the beginning and 37.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 30.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:28:40,100 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 56.6 MB. Free memory is still 38.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 321.14 ms. Allocated memory is still 56.6 MB. Free memory was 34.6 MB in the beginning and 39.5 MB in the end (delta: -4.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.36 ms. Allocated memory is still 56.6 MB. Free memory was 39.5 MB in the beginning and 37.6 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.03 ms. Allocated memory is still 56.6 MB. Free memory was 37.6 MB in the beginning and 36.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 554.70 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 36.1 MB in the beginning and 51.2 MB in the end (delta: -15.0 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 143283.04 ms. Allocated memory is still 69.2 MB. Free memory was 50.7 MB in the beginning and 37.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 30.8 MB. 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 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 143190.6ms, OverallIterations: 6, TraceHistogramMax: 5, EmptinessCheckTime: 15.7ms, AutomataDifference: 26800.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 3009.8ms, InitialAbstractionConstructionTime: 12.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 88 SDtfs, 485 SDslu, 273 SDs, 0 SdLazy, 490 SolverSat, 176 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 10540.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 576 GetRequests, 416 SyntacticMatches, 1 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1614 ImplicationChecksByTransitivity, 103440.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=5, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 44.8ms AutomataMinimizationTime, 6 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 14 NumberOfFragments, 124 HoareAnnotationTreeSize, 3 FomulaSimplifications, 301 FormulaSimplificationTreeSizeReduction, 191.5ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 240 FormulaSimplificationTreeSizeReductionInter, 2813.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 193.3ms SsaConstructionTime, 2171.5ms SatisfiabilityAnalysisTime, 75608.3ms InterpolantComputationTime, 246 NumberOfCodeBlocks, 210 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 470 ConstructedInterpolants, 68 QuantifiedInterpolants, 7053 SizeOfPredicates, 218 NumberOfNonLiveVariables, 1054 ConjunctsInSsa, 228 ConjunctsInUnsatCore, 22 InterpolantComputations, 6 PerfectInterpolantSequences, 146/216 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - ExceptionOrErrorResult: UnsupportedOperationException: translation of (const (_ BitVec 32) (Array (_ BitVec 32) (_ BitVec 32))) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (const (_ BitVec 32) (Array (_ BitVec 32) (_ BitVec 32))) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 02:28:40,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ef348f1-3df0-49b8-869c-078b3c444fe5/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...