./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce191414-a6e4-427f-96b8-e77301036f3f/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce191414-a6e4-427f-96b8-e77301036f3f/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce191414-a6e4-427f-96b8-e77301036f3f/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce191414-a6e4-427f-96b8-e77301036f3f/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce191414-a6e4-427f-96b8-e77301036f3f/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce191414-a6e4-427f-96b8-e77301036f3f/bin/utaipan-WLngWcDbfI --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 af6435cd57a20eac54acaf59c651a26bc7b64982 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:21:42,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:21:42,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:21:42,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:21:42,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:21:42,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:21:42,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:21:42,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:21:42,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:21:42,548 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:21:42,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:21:42,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:21:42,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:21:42,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:21:42,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:21:42,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:21:42,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:21:42,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:21:42,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:21:42,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:21:42,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:21:42,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:21:42,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:21:42,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:21:42,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:21:42,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:21:42,577 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:21:42,578 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:21:42,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:21:42,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:21:42,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:21:42,582 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:21:42,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:21:42,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:21:42,585 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:21:42,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:21:42,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:21:42,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:21:42,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:21:42,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:21:42,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:21:42,591 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce191414-a6e4-427f-96b8-e77301036f3f/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:21:42,616 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:21:42,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:21:42,618 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:21:42,618 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:21:42,619 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:21:42,619 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:21:42,619 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:21:42,620 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:21:42,620 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:21:42,620 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:21:42,620 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:21:42,621 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:21:42,621 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:21:42,621 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:21:42,622 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:21:42,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:21:42,623 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:21:42,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:21:42,623 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:21:42,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:21:42,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:21:42,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:21:42,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:21:42,625 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:21:42,625 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:21:42,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:21:42,626 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:21:42,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:21:42,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:21:42,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:21:42,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:42,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:21:42,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:21:42,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:21:42,628 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:21:42,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:21:42,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:21:42,629 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:21:42,629 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:21:42,629 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_ce191414-a6e4-427f-96b8-e77301036f3f/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce191414-a6e4-427f-96b8-e77301036f3f/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af6435cd57a20eac54acaf59c651a26bc7b64982 [2021-10-11 02:21:42,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:21:42,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:21:42,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:21:42,965 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:21:42,966 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:21:42,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce191414-a6e4-427f-96b8-e77301036f3f/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound2.i [2021-10-11 02:21:43,060 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce191414-a6e4-427f-96b8-e77301036f3f/bin/utaipan-WLngWcDbfI/data/b8f1c070b/2e40d5add5064ab3ba2df6e5ac2486ab/FLAG58101ee77 [2021-10-11 02:21:43,654 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:21:43,657 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce191414-a6e4-427f-96b8-e77301036f3f/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound2.i [2021-10-11 02:21:43,669 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce191414-a6e4-427f-96b8-e77301036f3f/bin/utaipan-WLngWcDbfI/data/b8f1c070b/2e40d5add5064ab3ba2df6e5ac2486ab/FLAG58101ee77 [2021-10-11 02:21:43,988 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce191414-a6e4-427f-96b8-e77301036f3f/bin/utaipan-WLngWcDbfI/data/b8f1c070b/2e40d5add5064ab3ba2df6e5ac2486ab [2021-10-11 02:21:44,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:21:44,007 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:21:44,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:44,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:21:44,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:21:44,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:44" (1/1) ... [2021-10-11 02:21:44,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74011028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:44, skipping insertion in model container [2021-10-11 02:21:44,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:21:44" (1/1) ... [2021-10-11 02:21:44,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:21:44,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:21:44,349 WARN L226 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_ce191414-a6e4-427f-96b8-e77301036f3f/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound2.i[951,964] [2021-10-11 02:21:44,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:44,383 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:21:44,407 WARN L226 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_ce191414-a6e4-427f-96b8-e77301036f3f/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound2.i[951,964] [2021-10-11 02:21:44,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:21:44,446 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:21:44,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:44 WrapperNode [2021-10-11 02:21:44,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:21:44,449 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:44,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:21:44,449 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:21:44,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:44" (1/1) ... [2021-10-11 02:21:44,468 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:44" (1/1) ... [2021-10-11 02:21:44,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:21:44,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:21:44,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:21:44,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:21:44,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:44" (1/1) ... [2021-10-11 02:21:44,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:44" (1/1) ... [2021-10-11 02:21:44,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:44" (1/1) ... [2021-10-11 02:21:44,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:44" (1/1) ... [2021-10-11 02:21:44,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:44" (1/1) ... [2021-10-11 02:21:44,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:44" (1/1) ... [2021-10-11 02:21:44,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:44" (1/1) ... [2021-10-11 02:21:44,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:21:44,542 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:21:44,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:21:44,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:21:44,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:44" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce191414-a6e4-427f-96b8-e77301036f3f/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:21:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:21:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:21:44,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:21:44,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:21:45,130 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:21:45,131 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-11 02:21:45,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:45 BoogieIcfgContainer [2021-10-11 02:21:45,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:21:45,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:21:45,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:21:45,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:21:45,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:21:44" (1/3) ... [2021-10-11 02:21:45,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@559fa6f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:45, skipping insertion in model container [2021-10-11 02:21:45,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:21:44" (2/3) ... [2021-10-11 02:21:45,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@559fa6f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:21:45, skipping insertion in model container [2021-10-11 02:21:45,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:45" (3/3) ... [2021-10-11 02:21:45,157 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_unwindbound2.i [2021-10-11 02:21:45,174 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:21:45,177 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 02:21:45,190 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-11 02:21:45,230 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:21:45,230 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:21:45,230 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:21:45,231 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:21:45,231 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:21:45,231 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:21:45,231 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:21:45,231 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:21:45,246 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2021-10-11 02:21:45,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:21:45,250 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:45,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:21:45,251 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:45,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:45,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1412902445, now seen corresponding path program 1 times [2021-10-11 02:21:45,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:45,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628394418] [2021-10-11 02:21:45,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:45,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:45,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628394418] [2021-10-11 02:21:45,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:45,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:21:45,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744980880] [2021-10-11 02:21:45,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:21:45,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:45,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:21:45,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:21:45,437 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2021-10-11 02:21:45,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:45,455 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2021-10-11 02:21:45,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:21:45,457 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2021-10-11 02:21:45,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:45,466 INFO L225 Difference]: With dead ends: 28 [2021-10-11 02:21:45,466 INFO L226 Difference]: Without dead ends: 14 [2021-10-11 02:21:45,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:21:45,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-11 02:21:45,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-11 02:21:45,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-11 02:21:45,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2021-10-11 02:21:45,506 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 6 [2021-10-11 02:21:45,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:45,506 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2021-10-11 02:21:45,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:21:45,507 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2021-10-11 02:21:45,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:21:45,508 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:45,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:45,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:21:45,509 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:45,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:45,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1233561970, now seen corresponding path program 1 times [2021-10-11 02:21:45,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:45,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858708677] [2021-10-11 02:21:45,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:45,532 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:21:45,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1350006649] [2021-10-11 02:21:45,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce191414-a6e4-427f-96b8-e77301036f3f/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:21:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:45,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:21:45,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:45,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:45,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:21:45,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:45,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858708677] [2021-10-11 02:21:45,824 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:21:45,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350006649] [2021-10-11 02:21:45,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:45,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-11 02:21:45,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558545390] [2021-10-11 02:21:45,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:21:45,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:45,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:21:45,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:21:45,832 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand 6 states. [2021-10-11 02:21:45,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:45,900 INFO L93 Difference]: Finished difference Result 30 states and 37 transitions. [2021-10-11 02:21:45,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:21:45,901 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2021-10-11 02:21:45,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:45,903 INFO L225 Difference]: With dead ends: 30 [2021-10-11 02:21:45,903 INFO L226 Difference]: Without dead ends: 20 [2021-10-11 02:21:45,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:21:45,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-11 02:21:45,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2021-10-11 02:21:45,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-11 02:21:45,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-10-11 02:21:45,917 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 7 [2021-10-11 02:21:45,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:45,921 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-10-11 02:21:45,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:21:45,922 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-10-11 02:21:45,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:21:45,924 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:45,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:46,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-11 02:21:46,148 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:46,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:46,149 INFO L82 PathProgramCache]: Analyzing trace with hash 463079341, now seen corresponding path program 1 times [2021-10-11 02:21:46,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:46,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219861869] [2021-10-11 02:21:46,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:46,174 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:21:46,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [715342530] [2021-10-11 02:21:46,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce191414-a6e4-427f-96b8-e77301036f3f/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:21:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:46,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-11 02:21:46,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:46,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:46,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:21:46,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:46,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219861869] [2021-10-11 02:21:46,497 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:21:46,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715342530] [2021-10-11 02:21:46,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:46,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-11 02:21:46,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779536811] [2021-10-11 02:21:46,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:21:46,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:46,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:21:46,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:21:46,501 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 8 states. [2021-10-11 02:21:50,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:50,112 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions. [2021-10-11 02:21:50,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:21:50,113 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2021-10-11 02:21:50,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:50,114 INFO L225 Difference]: With dead ends: 46 [2021-10-11 02:21:50,114 INFO L226 Difference]: Without dead ends: 36 [2021-10-11 02:21:50,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:21:50,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-11 02:21:50,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2021-10-11 02:21:50,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-10-11 02:21:50,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2021-10-11 02:21:50,122 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 8 [2021-10-11 02:21:50,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:50,122 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2021-10-11 02:21:50,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:21:50,122 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2021-10-11 02:21:50,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:21:50,123 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:50,124 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:50,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:21:50,325 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:50,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:50,325 INFO L82 PathProgramCache]: Analyzing trace with hash 283392014, now seen corresponding path program 1 times [2021-10-11 02:21:50,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:50,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632502355] [2021-10-11 02:21:50,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:50,369 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:21:50,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1979064817] [2021-10-11 02:21:50,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce191414-a6e4-427f-96b8-e77301036f3f/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:21:50,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:50,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:21:50,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:50,495 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-11 02:21:50,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:21:50,587 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-11 02:21:50,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632502355] [2021-10-11 02:21:50,588 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:21:50,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979064817] [2021-10-11 02:21:50,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:21:50,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-11 02:21:50,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505627359] [2021-10-11 02:21:50,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:21:50,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:21:50,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:21:50,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:21:50,597 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 8 states. [2021-10-11 02:21:50,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:21:50,674 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2021-10-11 02:21:50,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:21:50,674 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2021-10-11 02:21:50,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:21:50,677 INFO L225 Difference]: With dead ends: 44 [2021-10-11 02:21:50,677 INFO L226 Difference]: Without dead ends: 34 [2021-10-11 02:21:50,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:21:50,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-11 02:21:50,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2021-10-11 02:21:50,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-10-11 02:21:50,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2021-10-11 02:21:50,691 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 13 [2021-10-11 02:21:50,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:21:50,692 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2021-10-11 02:21:50,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:21:50,692 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2021-10-11 02:21:50,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 02:21:50,694 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:21:50,694 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:21:50,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:21:50,908 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:21:50,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:21:50,909 INFO L82 PathProgramCache]: Analyzing trace with hash 195180174, now seen corresponding path program 1 times [2021-10-11 02:21:50,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:21:50,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075348721] [2021-10-11 02:21:50,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:21:50,965 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:21:50,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1125405332] [2021-10-11 02:21:50,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce191414-a6e4-427f-96b8-e77301036f3f/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:21:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:21:51,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-11 02:21:51,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:21:51,220 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:21:51,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:22:08,101 WARN L197 SmtUtils]: Spent 14.68 s on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2021-10-11 02:22:16,547 WARN L197 SmtUtils]: Spent 6.21 s on a formula simplification that was a NOOP. DAG size: 43 [2021-10-11 02:22:25,021 WARN L197 SmtUtils]: Spent 6.25 s on a formula simplification that was a NOOP. DAG size: 47 [2021-10-11 02:22:25,073 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 5 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:22:25,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075348721] [2021-10-11 02:22:25,073 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:22:25,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125405332] [2021-10-11 02:22:25,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [744700306] [2021-10-11 02:22:25,098 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-11 02:22:25,098 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:22:25,104 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:22:25,110 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:22:25,111 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:22:25,716 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:22:26,009 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 27 [2021-10-11 02:22:26,237 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 30 [2021-10-11 02:22:27,026 WARN L197 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 63 [2021-10-11 02:22:27,436 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:22:27,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:22:27,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-11 02:22:27,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231231415] [2021-10-11 02:22:27,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-10-11 02:22:27,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:27,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 02:22:27,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=250, Unknown=3, NotChecked=0, Total=306 [2021-10-11 02:22:27,439 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 10 states. [2021-10-11 02:22:27,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:27,928 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2021-10-11 02:22:27,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-11 02:22:27,933 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2021-10-11 02:22:27,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:27,934 INFO L225 Difference]: With dead ends: 48 [2021-10-11 02:22:27,934 INFO L226 Difference]: Without dead ends: 39 [2021-10-11 02:22:27,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 35.3s TimeCoverageRelationStatistics Valid=77, Invalid=340, Unknown=3, NotChecked=0, Total=420 [2021-10-11 02:22:27,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-11 02:22:27,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 25. [2021-10-11 02:22:27,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-10-11 02:22:27,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-10-11 02:22:27,942 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 14 [2021-10-11 02:22:27,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:27,942 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-10-11 02:22:27,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-10-11 02:22:27,942 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2021-10-11 02:22:27,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:22:27,943 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:22:27,943 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:22:28,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:22:28,164 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:22:28,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:22:28,165 INFO L82 PathProgramCache]: Analyzing trace with hash 735004594, now seen corresponding path program 1 times [2021-10-11 02:22:28,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:22:28,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726856053] [2021-10-11 02:22:28,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:22:28,178 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:22:28,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1953898473] [2021-10-11 02:22:28,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce191414-a6e4-427f-96b8-e77301036f3f/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:22:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:22:28,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:22:28,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:22:28,337 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:22:28,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:22:28,378 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:22:28,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726856053] [2021-10-11 02:22:28,378 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:22:28,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953898473] [2021-10-11 02:22:28,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:22:28,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-11 02:22:28,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697705889] [2021-10-11 02:22:28,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:22:28,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:22:28,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:22:28,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:22:28,380 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 6 states. [2021-10-11 02:22:28,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:22:28,432 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-10-11 02:22:28,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:22:28,432 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-10-11 02:22:28,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:22:28,432 INFO L225 Difference]: With dead ends: 26 [2021-10-11 02:22:28,433 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:22:28,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:22:28,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:22:28,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:22:28,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:22:28,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:22:28,434 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-10-11 02:22:28,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:22:28,434 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:22:28,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:22:28,434 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:22:28,434 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:22:28,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-10-11 02:22:28,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:22:28,817 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 26 [2021-10-11 02:22:28,848 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-10-11 02:22:28,848 INFO L262 CegarLoopResult]: For program point L19(lines 19 22) no Hoare annotation was computed. [2021-10-11 02:22:28,848 INFO L258 CegarLoopResult]: At program point L19-2(line 40) the Hoare annotation is: (and (= ULTIMATE.start_main_~b~0 1) (< (mod ULTIMATE.start_main_~r~0 4294967296) (mod ULTIMATE.start_main_~b~0 4294967296)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0) (<= 2 ~counter~0)) [2021-10-11 02:22:28,848 INFO L262 CegarLoopResult]: For program point L19-3(lines 19 22) no Hoare annotation was computed. [2021-10-11 02:22:28,848 INFO L265 CegarLoopResult]: At program point L19-5(lines 18 24) the Hoare annotation is: true [2021-10-11 02:22:28,848 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:22:28,849 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-10-11 02:22:28,849 INFO L262 CegarLoopResult]: For program point L20(lines 20 21) no Hoare annotation was computed. [2021-10-11 02:22:28,849 INFO L262 CegarLoopResult]: For program point L20-1(lines 20 21) no Hoare annotation was computed. [2021-10-11 02:22:28,849 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:22:28,849 INFO L262 CegarLoopResult]: For program point L38(lines 38 47) no Hoare annotation was computed. [2021-10-11 02:22:28,849 INFO L262 CegarLoopResult]: For program point L38-2(lines 38 47) no Hoare annotation was computed. [2021-10-11 02:22:28,849 INFO L262 CegarLoopResult]: For program point L34-1(lines 34 37) no Hoare annotation was computed. [2021-10-11 02:22:28,849 INFO L258 CegarLoopResult]: At program point L34-3(lines 34 37) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~q~0 0)) (.cse1 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0))) (or (and (= ULTIMATE.start_main_~b~0 1) (<= ~counter~0 0) .cse0 .cse1 (<= 0 ~counter~0)) (and (<= 1 ~counter~0) (let ((.cse2 (mod ULTIMATE.start_main_~r~0 4294967296))) (or (and (< ~counter~0 2) (= ULTIMATE.start_main_~b~0 2) (<= 1 .cse2) .cse0 .cse1) (and (<= 2 .cse2) .cse0 .cse1)))))) [2021-10-11 02:22:28,849 INFO L262 CegarLoopResult]: For program point L43-2(lines 26 50) no Hoare annotation was computed. [2021-10-11 02:22:28,850 INFO L262 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2021-10-11 02:22:28,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:22:28 BoogieIcfgContainer [2021-10-11 02:22:28,876 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:22:28,877 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:22:28,877 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:22:28,877 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:22:28,878 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:21:45" (3/4) ... [2021-10-11 02:22:28,882 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:22:28,894 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-11 02:22:28,894 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:22:28,895 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:22:28,895 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:22:28,956 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce191414-a6e4-427f-96b8-e77301036f3f/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:22:28,960 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:22:28,962 INFO L168 Benchmark]: Toolchain (without parser) took 44953.78 ms. Allocated memory was 102.8 MB in the beginning and 144.7 MB in the end (delta: 41.9 MB). Free memory was 63.7 MB in the beginning and 66.3 MB in the end (delta: -2.6 MB). Peak memory consumption was 39.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:28,963 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 102.8 MB. Free memory was 79.9 MB in the beginning and 79.9 MB in the end (delta: 55.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:28,963 INFO L168 Benchmark]: CACSL2BoogieTranslator took 435.59 ms. Allocated memory is still 102.8 MB. Free memory was 63.5 MB in the beginning and 78.0 MB in the end (delta: -14.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:28,964 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.30 ms. Allocated memory is still 102.8 MB. Free memory was 77.7 MB in the beginning and 76.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:22:28,964 INFO L168 Benchmark]: Boogie Preprocessor took 49.16 ms. Allocated memory is still 102.8 MB. Free memory was 76.2 MB in the beginning and 75.3 MB in the end (delta: 921.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:28,965 INFO L168 Benchmark]: RCFGBuilder took 592.25 ms. Allocated memory is still 102.8 MB. Free memory was 75.3 MB in the beginning and 59.2 MB in the end (delta: 16.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:28,965 INFO L168 Benchmark]: TraceAbstraction took 43740.93 ms. Allocated memory was 102.8 MB in the beginning and 144.7 MB in the end (delta: 41.9 MB). Free memory was 58.6 MB in the beginning and 68.4 MB in the end (delta: -9.8 MB). Peak memory consumption was 32.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:28,966 INFO L168 Benchmark]: Witness Printer took 83.31 ms. Allocated memory is still 144.7 MB. Free memory was 68.4 MB in the beginning and 66.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:22:28,968 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 102.8 MB. Free memory was 79.9 MB in the beginning and 79.9 MB in the end (delta: 55.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 435.59 ms. Allocated memory is still 102.8 MB. Free memory was 63.5 MB in the beginning and 78.0 MB in the end (delta: -14.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.30 ms. Allocated memory is still 102.8 MB. Free memory was 77.7 MB in the beginning and 76.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.16 ms. Allocated memory is still 102.8 MB. Free memory was 76.2 MB in the beginning and 75.3 MB in the end (delta: 921.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 592.25 ms. Allocated memory is still 102.8 MB. Free memory was 75.3 MB in the beginning and 59.2 MB in the end (delta: 16.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 43740.93 ms. Allocated memory was 102.8 MB in the beginning and 144.7 MB in the end (delta: 41.9 MB). Free memory was 58.6 MB in the beginning and 68.4 MB in the end (delta: -9.8 MB). Peak memory consumption was 32.7 MB. Max. memory is 16.1 GB. * Witness Printer took 83.31 ms. Allocated memory is still 144.7 MB. Free memory was 68.4 MB in the beginning and 66.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((b == 1 && counter <= 0) && q == 0) && A == r) && 0 <= counter) || (1 <= counter && (((((counter < 2 && b == 2) && 1 <= r % 4294967296) && q == 0) && A == r) || ((2 <= r % 4294967296 && q == 0) && A == r))) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((b == 1 && r % 4294967296 < b % 4294967296) && 1 == cond) && q == 0) && A == r) && 2 <= counter - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 43.4s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 90 SDtfs, 115 SDslu, 206 SDs, 0 SdLazy, 188 SolverSat, 37 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 35.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 27 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 76 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 57 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 34.6s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 109 ConstructedInterpolants, 11 QuantifiedInterpolants, 17984 SizeOfPredicates, 15 NumberOfNonLiveVariables, 316 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 11 InterpolantComputations, 9 PerfectInterpolantSequences, 28/40 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...