./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8 --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 d02047a3b9d197f6609f19d430d458b8d82d1972f1adb7857eb26188e13a592b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:54:32,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:54:32,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:54:32,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:54:32,440 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:54:32,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:54:32,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:54:32,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:54:32,454 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:54:32,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:54:32,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:54:32,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:54:32,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:54:32,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:54:32,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:54:32,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:54:32,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:54:32,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:54:32,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:54:32,492 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:54:32,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:54:32,496 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:54:32,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:54:32,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:54:32,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:54:32,512 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:54:32,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:54:32,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:54:32,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:54:32,517 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:54:32,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:54:32,519 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:54:32,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:54:32,522 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:54:32,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:54:32,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:54:32,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:54:32,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:54:32,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:54:32,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:54:32,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:54:32,529 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 00:54:32,573 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:54:32,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:54:32,575 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:54:32,575 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:54:32,576 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:54:32,576 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:54:32,576 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 00:54:32,576 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:54:32,583 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:54:32,583 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 00:54:32,584 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 00:54:32,584 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:54:32,585 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 00:54:32,585 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 00:54:32,585 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 00:54:32,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:54:32,586 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 00:54:32,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:54:32,587 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 00:54:32,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:54:32,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:54:32,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:54:32,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:54:32,588 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:54:32,588 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 00:54:32,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:54:32,589 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:54:32,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:54:32,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:54:32,591 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:54:32,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:54:32,591 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:54:32,592 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:54:32,592 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:54:32,592 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 00:54:32,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 00:54:32,593 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:54:32,593 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:54:32,593 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:54:32,594 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_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d02047a3b9d197f6609f19d430d458b8d82d1972f1adb7857eb26188e13a592b [2021-11-07 00:54:32,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:54:32,855 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:54:32,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:54:32,857 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:54:32,858 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:54:32,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound5.i [2021-11-07 00:54:32,956 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/data/94a01cc84/1bb4b7cb10b2455282a8f5d828c381aa/FLAG1f920aa0e [2021-11-07 00:54:33,377 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:54:33,378 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound5.i [2021-11-07 00:54:33,384 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/data/94a01cc84/1bb4b7cb10b2455282a8f5d828c381aa/FLAG1f920aa0e [2021-11-07 00:54:33,766 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/data/94a01cc84/1bb4b7cb10b2455282a8f5d828c381aa [2021-11-07 00:54:33,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:54:33,770 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:54:33,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:54:33,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:54:33,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:54:33,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:54:33" (1/1) ... [2021-11-07 00:54:33,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53a11fb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:33, skipping insertion in model container [2021-11-07 00:54:33,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:54:33" (1/1) ... [2021-11-07 00:54:33,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:54:33,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:54:33,982 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_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound5.i[950,963] [2021-11-07 00:54:34,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:54:34,025 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:54:34,051 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_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound5.i[950,963] [2021-11-07 00:54:34,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:54:34,091 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:54:34,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:34 WrapperNode [2021-11-07 00:54:34,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:54:34,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:54:34,099 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:54:34,100 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:54:34,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:34" (1/1) ... [2021-11-07 00:54:34,114 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:34" (1/1) ... [2021-11-07 00:54:34,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:54:34,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:54:34,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:54:34,141 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:54:34,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:34" (1/1) ... [2021-11-07 00:54:34,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:34" (1/1) ... [2021-11-07 00:54:34,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:34" (1/1) ... [2021-11-07 00:54:34,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:34" (1/1) ... [2021-11-07 00:54:34,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:34" (1/1) ... [2021-11-07 00:54:34,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:34" (1/1) ... [2021-11-07 00:54:34,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:34" (1/1) ... [2021-11-07 00:54:34,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:54:34,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:54:34,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:54:34,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:54:34,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:34" (1/1) ... [2021-11-07 00:54:34,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:54:34,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:54:34,230 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:54:34,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:54:34,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 00:54:34,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:54:34,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:54:34,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:54:34,745 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:54:34,745 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-11-07 00:54:34,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:54:34 BoogieIcfgContainer [2021-11-07 00:54:34,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:54:34,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:54:34,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:54:34,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:54:34,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:54:33" (1/3) ... [2021-11-07 00:54:34,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd25796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:54:34, skipping insertion in model container [2021-11-07 00:54:34,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:34" (2/3) ... [2021-11-07 00:54:34,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd25796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:54:34, skipping insertion in model container [2021-11-07 00:54:34,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:54:34" (3/3) ... [2021-11-07 00:54:34,756 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin_valuebound5.i [2021-11-07 00:54:34,762 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:54:34,762 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-07 00:54:34,811 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:54:34,819 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, mAutomataTypeConcurrency=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 [2021-11-07 00:54:34,819 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-07 00:54:34,835 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 13 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) [2021-11-07 00:54:34,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 00:54:34,840 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:34,840 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-07 00:54:34,841 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:54:34,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:34,847 INFO L85 PathProgramCache]: Analyzing trace with hash 136140001, now seen corresponding path program 1 times [2021-11-07 00:54:34,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:54:34,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086438320] [2021-11-07 00:54:34,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:34,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:54:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:35,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:35,066 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:54:35,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086438320] [2021-11-07 00:54:35,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086438320] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:35,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:35,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 00:54:35,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91151262] [2021-11-07 00:54:35,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 00:54:35,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:54:35,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 00:54:35,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 00:54:35,100 INFO L87 Difference]: Start difference. First operand has 14 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 13 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) [2021-11-07 00:54:35,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:35,118 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2021-11-07 00:54:35,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 00:54:35,120 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 [2021-11-07 00:54:35,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:35,132 INFO L225 Difference]: With dead ends: 25 [2021-11-07 00:54:35,132 INFO L226 Difference]: Without dead ends: 12 [2021-11-07 00:54:35,137 INFO L786 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 [2021-11-07 00:54:35,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-07 00:54:35,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-11-07 00:54:35,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:54:35,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-11-07 00:54:35,172 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 5 [2021-11-07 00:54:35,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:35,174 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-11-07 00:54:35,174 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) [2021-11-07 00:54:35,174 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-11-07 00:54:35,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 00:54:35,175 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:35,176 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 00:54:35,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 00:54:35,177 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:54:35,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:35,181 INFO L85 PathProgramCache]: Analyzing trace with hash -135046298, now seen corresponding path program 1 times [2021-11-07 00:54:35,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:54:35,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353576452] [2021-11-07 00:54:35,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:35,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:54:35,226 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 00:54:35,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [250793645] [2021-11-07 00:54:35,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:35,227 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:54:35,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:54:35,234 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:54:35,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 00:54:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:35,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 00:54:35,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:35,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:35,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:35,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:35,760 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:54:35,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353576452] [2021-11-07 00:54:35,760 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 00:54:35,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250793645] [2021-11-07 00:54:35,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250793645] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:35,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:35,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 00:54:35,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243770694] [2021-11-07 00:54:35,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 00:54:35,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 00:54:35,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 00:54:35,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 00:54:35,765 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 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) [2021-11-07 00:54:41,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:41,444 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2021-11-07 00:54:41,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 00:54:41,445 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-07 00:54:41,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:41,446 INFO L225 Difference]: With dead ends: 32 [2021-11-07 00:54:41,446 INFO L226 Difference]: Without dead ends: 24 [2021-11-07 00:54:41,447 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:54:41,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-07 00:54:41,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2021-11-07 00:54:41,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.25) internal successors, (25), 21 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) [2021-11-07 00:54:41,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-11-07 00:54:41,452 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 6 [2021-11-07 00:54:41,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:41,452 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-11-07 00:54:41,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 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) [2021-11-07 00:54:41,453 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-11-07 00:54:41,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 00:54:41,454 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:41,454 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2021-11-07 00:54:41,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:41,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:54:41,655 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:54:41,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:41,656 INFO L85 PathProgramCache]: Analyzing trace with hash 919733532, now seen corresponding path program 1 times [2021-11-07 00:54:41,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:54:41,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136704808] [2021-11-07 00:54:41,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:41,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:54:41,674 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 00:54:41,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2024351624] [2021-11-07 00:54:41,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:41,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:54:41,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:54:41,676 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:54:41,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 00:54:41,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:41,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 00:54:41,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:42,125 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 00:54:42,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:42,253 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 00:54:42,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136704808] [2021-11-07 00:54:42,254 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 00:54:42,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024351624] [2021-11-07 00:54:42,254 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [ULTIMATE.start_main_~b~0] [2021-11-07 00:54:42,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1519601822] [2021-11-07 00:54:42,276 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-07 00:54:42,276 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 00:54:42,281 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 00:54:42,286 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 00:54:42,287 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 00:54:42,317 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.4 percent of original size [2021-11-07 00:54:42,319 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:42,320 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,320 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-07 00:54:42,323 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 00:54:42,324 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,325 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-07 00:54:42,329 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-11-07 00:54:42,353 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_32|], 10=[|v_#valid_33|]} [2021-11-07 00:54:42,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-07 00:54:42,382 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,383 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-07 00:54:42,384 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,385 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-07 00:54:42,385 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:42,393 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 00:54:42,394 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,394 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 00:54:42,395 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,395 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 00:54:42,396 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:42,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:42,429 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 00:54:42,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-07 00:54:42,451 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,453 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 00:54:42,454 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,455 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 00:54:42,455 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-07 00:54:42,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:42,475 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,478 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,480 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-07 00:54:42,481 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 00:54:42,481 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:242, output treesize:105 [2021-11-07 00:54:42,489 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,493 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-11-07 00:54:42,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:42,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:42,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:42,641 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:42,654 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 293 [2021-11-07 00:54:42,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:42,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:42,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:42,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:42,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:42,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:42,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:42,787 INFO L180 QuantifierPusher]: treesize reduction 36, result has 56.6 percent of original size [2021-11-07 00:54:42,795 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-07 00:54:42,815 INFO L180 QuantifierPusher]: treesize reduction 36, result has 56.6 percent of original size [2021-11-07 00:54:42,820 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-07 00:54:42,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:42,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:42,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:42,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 00:54:42,873 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 00:54:44,047 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 00:54:44,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:44,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-07 00:54:44,048 ERROR L172 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2021-11-07 00:54:44,048 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-11-07 00:54:44,054 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 00:54:44,056 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 00:54:44,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:44,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:54:44,264 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-07 00:54:44,266 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 00:54:44,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:54:44 BoogieIcfgContainer [2021-11-07 00:54:44,278 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 00:54:44,278 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 00:54:44,278 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 00:54:44,279 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 00:54:44,279 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:54:34" (3/4) ... [2021-11-07 00:54:44,282 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 00:54:44,282 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 00:54:44,284 INFO L168 Benchmark]: Toolchain (without parser) took 10512.76 ms. Allocated memory was 98.6 MB in the beginning and 125.8 MB in the end (delta: 27.3 MB). Free memory was 65.1 MB in the beginning and 41.1 MB in the end (delta: 23.9 MB). Peak memory consumption was 51.2 MB. Max. memory is 16.1 GB. [2021-11-07 00:54:44,284 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 98.6 MB. Free memory is still 51.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:54:44,285 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.70 ms. Allocated memory is still 98.6 MB. Free memory was 64.9 MB in the beginning and 73.2 MB in the end (delta: -8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 00:54:44,285 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.54 ms. Allocated memory is still 98.6 MB. Free memory was 73.2 MB in the beginning and 71.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:54:44,286 INFO L168 Benchmark]: Boogie Preprocessor took 42.51 ms. Allocated memory is still 98.6 MB. Free memory was 71.8 MB in the beginning and 70.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 00:54:44,286 INFO L168 Benchmark]: RCFGBuilder took 563.90 ms. Allocated memory is still 98.6 MB. Free memory was 70.4 MB in the beginning and 54.4 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-07 00:54:44,287 INFO L168 Benchmark]: TraceAbstraction took 9528.64 ms. Allocated memory was 98.6 MB in the beginning and 125.8 MB in the end (delta: 27.3 MB). Free memory was 53.7 MB in the beginning and 41.1 MB in the end (delta: 12.5 MB). Peak memory consumption was 41.7 MB. Max. memory is 16.1 GB. [2021-11-07 00:54:44,288 INFO L168 Benchmark]: Witness Printer took 4.12 ms. Allocated memory is still 125.8 MB. Free memory is still 41.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:54:44,291 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 98.6 MB. Free memory is still 51.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 319.70 ms. Allocated memory is still 98.6 MB. Free memory was 64.9 MB in the beginning and 73.2 MB in the end (delta: -8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.54 ms. Allocated memory is still 98.6 MB. Free memory was 73.2 MB in the beginning and 71.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.51 ms. Allocated memory is still 98.6 MB. Free memory was 71.8 MB in the beginning and 70.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 563.90 ms. Allocated memory is still 98.6 MB. Free memory was 70.4 MB in the beginning and 54.4 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9528.64 ms. Allocated memory was 98.6 MB in the beginning and 125.8 MB in the end (delta: 27.3 MB). Free memory was 53.7 MB in the beginning and 41.1 MB in the end (delta: 12.5 MB). Peak memory consumption was 41.7 MB. Max. memory is 16.1 GB. * Witness Printer took 4.12 ms. Allocated memory is still 125.8 MB. Free memory is still 41.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L26] unsigned A, B; [L27] unsigned q, r, b; [L28] A = __VERIFIER_nondet_uint() [L16] COND TRUE !cond [L30] B = __VERIFIER_nondet_uint() [L16] COND FALSE !(!cond) [L16] COND FALSE !(!cond) [L16] COND TRUE !cond [L34] q = 0 [L35] r = A [L36] b = B [L37] COND TRUE 1 [L38] COND FALSE !(!(r >= b)) [L39] b = 2 * b [L37] COND TRUE 1 [L38] COND FALSE !(!(r >= b)) [L39] b = 2 * b [L37] COND TRUE 1 [L38] COND TRUE !(r >= b) [L41] COND TRUE 1 [L19] COND TRUE !(cond) [L21] reach_error() - UnprovableResult [Line: 21]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 9.4s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 18 SDslu, 18 SDs, 0 SdLazy, 40 SolverSat, 14 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 5.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=2, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 257 SizeOfPredicates, 14 NumberOfNonLiveVariables, 104 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 2/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-07 00:54:44,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8 --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 d02047a3b9d197f6609f19d430d458b8d82d1972f1adb7857eb26188e13a592b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:54:46,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:54:46,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:54:46,918 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:54:46,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:54:46,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:54:46,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:54:46,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:54:46,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:54:46,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:54:46,941 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:54:46,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:54:46,943 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:54:46,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:54:46,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:54:46,951 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:54:46,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:54:46,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:54:46,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:54:46,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:54:46,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:54:46,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:54:46,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:54:46,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:54:46,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:54:46,989 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:54:46,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:54:46,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:54:46,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:54:46,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:54:46,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:54:46,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:54:46,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:54:46,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:54:46,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:54:47,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:54:47,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:54:47,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:54:47,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:54:47,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:54:47,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:54:47,004 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 00:54:47,047 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:54:47,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:54:47,049 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:54:47,049 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:54:47,050 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:54:47,050 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:54:47,050 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:54:47,050 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:54:47,051 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:54:47,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:54:47,053 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 00:54:47,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 00:54:47,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:54:47,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:54:47,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:54:47,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:54:47,055 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:54:47,055 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 00:54:47,055 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 00:54:47,056 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 00:54:47,056 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:54:47,056 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:54:47,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:54:47,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:54:47,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 00:54:47,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:54:47,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:54:47,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:54:47,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:54:47,058 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:54:47,058 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 00:54:47,059 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 00:54:47,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:54:47,059 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:54:47,060 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:54:47,060 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_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d02047a3b9d197f6609f19d430d458b8d82d1972f1adb7857eb26188e13a592b [2021-11-07 00:54:47,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:54:47,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:54:47,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:54:47,441 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:54:47,442 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:54:47,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound5.i [2021-11-07 00:54:47,507 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/data/1196e06f4/3efe496b63a844d48402c82c35032443/FLAGf49d6b97e [2021-11-07 00:54:48,067 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:54:48,070 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound5.i [2021-11-07 00:54:48,078 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/data/1196e06f4/3efe496b63a844d48402c82c35032443/FLAGf49d6b97e [2021-11-07 00:54:48,448 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/data/1196e06f4/3efe496b63a844d48402c82c35032443 [2021-11-07 00:54:48,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:54:48,453 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:54:48,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:54:48,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:54:48,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:54:48,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:54:48" (1/1) ... [2021-11-07 00:54:48,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56ce042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:48, skipping insertion in model container [2021-11-07 00:54:48,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:54:48" (1/1) ... [2021-11-07 00:54:48,469 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:54:48,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:54:48,705 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_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound5.i[950,963] [2021-11-07 00:54:48,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:54:48,777 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:54:48,816 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_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound5.i[950,963] [2021-11-07 00:54:48,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:54:48,850 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:54:48,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:48 WrapperNode [2021-11-07 00:54:48,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:54:48,855 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:54:48,855 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:54:48,855 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:54:48,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:48" (1/1) ... [2021-11-07 00:54:48,871 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:48" (1/1) ... [2021-11-07 00:54:48,892 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:54:48,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:54:48,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:54:48,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:54:48,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:48" (1/1) ... [2021-11-07 00:54:48,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:48" (1/1) ... [2021-11-07 00:54:48,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:48" (1/1) ... [2021-11-07 00:54:48,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:48" (1/1) ... [2021-11-07 00:54:48,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:48" (1/1) ... [2021-11-07 00:54:48,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:48" (1/1) ... [2021-11-07 00:54:48,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:48" (1/1) ... [2021-11-07 00:54:48,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:54:48,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:54:48,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:54:48,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:54:48,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:48" (1/1) ... [2021-11-07 00:54:48,927 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:54:48,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:54:48,951 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:54:48,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:54:48,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 00:54:48,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:54:48,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:54:48,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:54:49,411 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:54:49,412 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-11-07 00:54:49,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:54:49 BoogieIcfgContainer [2021-11-07 00:54:49,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:54:49,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:54:49,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:54:49,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:54:49,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:54:48" (1/3) ... [2021-11-07 00:54:49,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4581c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:54:49, skipping insertion in model container [2021-11-07 00:54:49,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:48" (2/3) ... [2021-11-07 00:54:49,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d4581c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:54:49, skipping insertion in model container [2021-11-07 00:54:49,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:54:49" (3/3) ... [2021-11-07 00:54:49,432 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin_valuebound5.i [2021-11-07 00:54:49,438 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:54:49,439 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-07 00:54:49,508 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:54:49,515 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, mAutomataTypeConcurrency=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 [2021-11-07 00:54:49,516 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-07 00:54:49,531 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 25 states have internal predecessors, (38), 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) [2021-11-07 00:54:49,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 00:54:49,536 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:49,537 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:49,538 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:54:49,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:49,544 INFO L85 PathProgramCache]: Analyzing trace with hash -174569337, now seen corresponding path program 1 times [2021-11-07 00:54:49,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:49,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [539364688] [2021-11-07 00:54:49,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:49,559 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:49,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:49,562 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:49,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 00:54:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:49,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 00:54:49,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:49,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:49,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:49,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:49,846 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:49,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [539364688] [2021-11-07 00:54:49,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [539364688] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:49,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:49,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 00:54:49,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928674948] [2021-11-07 00:54:49,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 00:54:49,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:49,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 00:54:49,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 00:54:49,886 INFO L87 Difference]: Start difference. First operand has 26 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 25 states have internal predecessors, (38), 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) [2021-11-07 00:54:49,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:49,919 INFO L93 Difference]: Finished difference Result 49 states and 72 transitions. [2021-11-07 00:54:49,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 00:54:49,921 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 [2021-11-07 00:54:49,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:49,930 INFO L225 Difference]: With dead ends: 49 [2021-11-07 00:54:49,931 INFO L226 Difference]: Without dead ends: 22 [2021-11-07 00:54:49,934 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 00:54:49,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-07 00:54:49,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-07 00:54:49,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 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) [2021-11-07 00:54:49,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-11-07 00:54:49,974 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 14 [2021-11-07 00:54:49,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:49,975 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-11-07 00:54:49,975 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) [2021-11-07 00:54:49,975 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-11-07 00:54:49,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 00:54:49,977 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:49,977 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:49,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:50,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:50,191 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:54:50,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:50,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1454099019, now seen corresponding path program 1 times [2021-11-07 00:54:50,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:50,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713342082] [2021-11-07 00:54:50,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:50,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:50,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:50,195 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:50,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 00:54:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:50,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 00:54:50,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:50,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:50,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:51,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:51,492 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:51,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713342082] [2021-11-07 00:54:51,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1713342082] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:51,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:51,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 4] imperfect sequences [] total 10 [2021-11-07 00:54:51,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328530604] [2021-11-07 00:54:51,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 00:54:51,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:51,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 00:54:51,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-07 00:54:51,497 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:54:53,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:53,002 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2021-11-07 00:54:53,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 00:54:53,003 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-07 00:54:53,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:53,004 INFO L225 Difference]: With dead ends: 46 [2021-11-07 00:54:53,004 INFO L226 Difference]: Without dead ends: 38 [2021-11-07 00:54:53,006 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-11-07 00:54:53,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-07 00:54:53,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2021-11-07 00:54:53,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 32 states have internal predecessors, (38), 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) [2021-11-07 00:54:53,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2021-11-07 00:54:53,016 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 15 [2021-11-07 00:54:53,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:53,016 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2021-11-07 00:54:53,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.8) internal successors, (28), 10 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:54:53,017 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2021-11-07 00:54:53,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 00:54:53,018 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:53,018 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:53,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:53,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:53,230 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:54:53,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:53,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1807844991, now seen corresponding path program 1 times [2021-11-07 00:54:53,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:53,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588389904] [2021-11-07 00:54:53,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:53,233 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:53,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:53,234 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:53,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 00:54:53,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:53,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 00:54:53,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:53,689 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 00:54:53,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:54,343 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 00:54:54,343 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:54,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588389904] [2021-11-07 00:54:54,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588389904] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:54,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:54,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 8 [2021-11-07 00:54:54,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271304305] [2021-11-07 00:54:54,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 00:54:54,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:54,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 00:54:54,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 00:54:54,346 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 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) [2021-11-07 00:54:54,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:54,784 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2021-11-07 00:54:54,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 00:54:54,785 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 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 [2021-11-07 00:54:54,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:54,786 INFO L225 Difference]: With dead ends: 49 [2021-11-07 00:54:54,786 INFO L226 Difference]: Without dead ends: 43 [2021-11-07 00:54:54,787 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-11-07 00:54:54,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-07 00:54:54,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2021-11-07 00:54:54,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 34 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:54:54,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2021-11-07 00:54:54,795 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 19 [2021-11-07 00:54:54,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:54,795 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2021-11-07 00:54:54,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 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) [2021-11-07 00:54:54,796 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2021-11-07 00:54:54,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-07 00:54:54,797 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:54,797 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:54,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:55,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:55,014 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:54:55,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:55,018 INFO L85 PathProgramCache]: Analyzing trace with hash 567763771, now seen corresponding path program 1 times [2021-11-07 00:54:55,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:55,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [467107377] [2021-11-07 00:54:55,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:55,021 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:55,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:55,022 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:55,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 00:54:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:55,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-07 00:54:55,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:56,549 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:56,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:59,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:59,029 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:59,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [467107377] [2021-11-07 00:54:59,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [467107377] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:54:59,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2094085070] [2021-11-07 00:54:59,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:59,030 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:54:59,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:54:59,037 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:54:59,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-07 00:54:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:59,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 00:54:59,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:01,742 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:01,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:02,972 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:02,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2094085070] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:55:02,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758761965] [2021-11-07 00:55:02,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:02,973 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:55:02,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:55:02,975 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:55:02,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 00:55:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:03,129 WARN L261 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-07 00:55:03,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:04,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:04,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:06,972 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:06,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758761965] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:55:06,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 00:55:06,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 7, 6, 16, 9] total 31 [2021-11-07 00:55:06,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938943880] [2021-11-07 00:55:06,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-07 00:55:06,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:55:06,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-07 00:55:06,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=731, Unknown=1, NotChecked=0, Total=930 [2021-11-07 00:55:06,976 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 31 states have internal predecessors, (70), 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) [2021-11-07 00:55:14,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:14,097 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2021-11-07 00:55:14,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 00:55:14,100 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 31 states have internal predecessors, (70), 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 21 [2021-11-07 00:55:14,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:14,101 INFO L225 Difference]: With dead ends: 69 [2021-11-07 00:55:14,101 INFO L226 Difference]: Without dead ends: 53 [2021-11-07 00:55:14,103 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 91 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=585, Invalid=1766, Unknown=1, NotChecked=0, Total=2352 [2021-11-07 00:55:14,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-07 00:55:14,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 35. [2021-11-07 00:55:14,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 34 states have internal predecessors, (39), 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) [2021-11-07 00:55:14,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-11-07 00:55:14,111 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 21 [2021-11-07 00:55:14,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:14,112 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-11-07 00:55:14,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 31 states have internal predecessors, (70), 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) [2021-11-07 00:55:14,112 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-11-07 00:55:14,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 00:55:14,113 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:14,114 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:55:14,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2021-11-07 00:55:14,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:14,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:14,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:55:14,717 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:55:14,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:14,718 INFO L85 PathProgramCache]: Analyzing trace with hash -409722187, now seen corresponding path program 1 times [2021-11-07 00:55:14,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:55:14,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237538765] [2021-11-07 00:55:14,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:14,719 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:55:14,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:55:14,720 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:55:14,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 00:55:14,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:14,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:55:14,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:14,962 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 00:55:14,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:15,029 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 00:55:15,029 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:55:15,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237538765] [2021-11-07 00:55:15,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [237538765] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:15,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:55:15,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 00:55:15,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086477007] [2021-11-07 00:55:15,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:55:15,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:55:15,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:55:15,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:55:15,032 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-11-07 00:55:15,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:15,105 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2021-11-07 00:55:15,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:55:15,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 23 [2021-11-07 00:55:15,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:15,109 INFO L225 Difference]: With dead ends: 51 [2021-11-07 00:55:15,109 INFO L226 Difference]: Without dead ends: 31 [2021-11-07 00:55:15,110 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 00:55:15,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-07 00:55:15,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-07 00:55:15,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 30 states have internal predecessors, (33), 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) [2021-11-07 00:55:15,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2021-11-07 00:55:15,115 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 23 [2021-11-07 00:55:15,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:15,116 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2021-11-07 00:55:15,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-11-07 00:55:15,117 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2021-11-07 00:55:15,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 00:55:15,118 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:15,118 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:55:15,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:15,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:55:15,329 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:55:15,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:15,329 INFO L85 PathProgramCache]: Analyzing trace with hash -572229456, now seen corresponding path program 2 times [2021-11-07 00:55:15,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:55:15,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1992522472] [2021-11-07 00:55:15,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 00:55:15,330 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:55:15,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:55:15,331 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:55:15,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 00:55:15,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 00:55:15,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 00:55:15,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 00:55:15,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:16,066 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:16,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:16,364 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:16,365 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:55:16,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1992522472] [2021-11-07 00:55:16,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1992522472] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:55:16,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [919185960] [2021-11-07 00:55:16,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 00:55:16,366 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:55:16,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:55:16,369 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:55:16,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-07 00:55:16,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 00:55:16,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 00:55:16,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 00:55:16,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:17,143 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:17,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:18,289 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:18,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [919185960] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:55:18,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590371127] [2021-11-07 00:55:18,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 00:55:18,290 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:55:18,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:55:18,291 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:55:18,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 00:55:18,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 00:55:18,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 00:55:18,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-07 00:55:18,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:19,682 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:19,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:24,970 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:24,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590371127] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:55:24,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 00:55:24,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 9, 8, 16, 12] total 42 [2021-11-07 00:55:24,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022815831] [2021-11-07 00:55:24,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-11-07 00:55:24,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:55:24,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-11-07 00:55:24,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=1356, Unknown=0, NotChecked=0, Total=1722 [2021-11-07 00:55:24,974 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 42 states, 42 states have (on average 2.5) internal successors, (105), 42 states have internal predecessors, (105), 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) [2021-11-07 00:55:35,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:35,621 INFO L93 Difference]: Finished difference Result 79 states and 87 transitions. [2021-11-07 00:55:35,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-07 00:55:35,622 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.5) internal successors, (105), 42 states have internal predecessors, (105), 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 25 [2021-11-07 00:55:35,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:35,624 INFO L225 Difference]: With dead ends: 79 [2021-11-07 00:55:35,624 INFO L226 Difference]: Without dead ends: 62 [2021-11-07 00:55:35,627 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1154 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=963, Invalid=3197, Unknown=0, NotChecked=0, Total=4160 [2021-11-07 00:55:35,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-07 00:55:35,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 45. [2021-11-07 00:55:35,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 44 states have internal predecessors, (49), 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) [2021-11-07 00:55:35,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2021-11-07 00:55:35,636 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 25 [2021-11-07 00:55:35,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:35,637 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2021-11-07 00:55:35,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.5) internal successors, (105), 42 states have internal predecessors, (105), 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) [2021-11-07 00:55:35,637 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2021-11-07 00:55:35,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 00:55:35,639 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:35,639 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:55:35,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:35,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:36,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-07 00:55:36,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:55:36,253 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:55:36,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:36,253 INFO L85 PathProgramCache]: Analyzing trace with hash -2122892309, now seen corresponding path program 3 times [2021-11-07 00:55:36,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:55:36,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115354980] [2021-11-07 00:55:36,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 00:55:36,254 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:55:36,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:55:36,256 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:55:36,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 00:55:36,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-07 00:55:36,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 00:55:36,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-07 00:55:36,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:38,125 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:38,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:44,611 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:44,611 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:55:44,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115354980] [2021-11-07 00:55:44,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115354980] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:55:44,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1216770196] [2021-11-07 00:55:44,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 00:55:44,612 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:55:44,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:55:44,628 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:55:44,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 00:55:45,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-07 00:55:45,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 00:55:45,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-07 00:55:45,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:46,624 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:46,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:55,307 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:55,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1216770196] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:55:55,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602293101] [2021-11-07 00:55:55,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 00:55:55,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:55:55,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:55:55,310 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:55:55,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-07 00:55:55,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-07 00:55:55,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 00:55:55,786 WARN L261 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-07 00:55:55,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:59,323 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:59,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:56:10,638 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:56:10,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602293101] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:56:10,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 00:56:10,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 14, 12, 17, 12] total 43 [2021-11-07 00:56:10,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389750017] [2021-11-07 00:56:10,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-11-07 00:56:10,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:56:10,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-11-07 00:56:10,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=1453, Unknown=0, NotChecked=0, Total=1806 [2021-11-07 00:56:10,642 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 43 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 43 states have internal predecessors, (93), 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) [2021-11-07 00:56:28,241 WARN L207 SmtUtils]: Spent 11.66 s on a formula simplification that was a NOOP. DAG size: 73 [2021-11-07 00:59:26,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:59:26,931 INFO L93 Difference]: Finished difference Result 130 states and 148 transitions. [2021-11-07 00:59:26,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-11-07 00:59:26,931 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 43 states have internal predecessors, (93), 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 27 [2021-11-07 00:59:26,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:59:26,934 INFO L225 Difference]: With dead ends: 130 [2021-11-07 00:59:26,934 INFO L226 Difference]: Without dead ends: 118 [2021-11-07 00:59:26,937 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 110 SyntacticMatches, 7 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3137 ImplicationChecksByTransitivity, 163.0s TimeCoverageRelationStatistics Valid=1674, Invalid=8226, Unknown=0, NotChecked=0, Total=9900 [2021-11-07 00:59:26,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-11-07 00:59:26,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 72. [2021-11-07 00:59:26,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 70 states have (on average 1.2571428571428571) internal successors, (88), 71 states have internal predecessors, (88), 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) [2021-11-07 00:59:26,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 88 transitions. [2021-11-07 00:59:26,954 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 88 transitions. Word has length 27 [2021-11-07 00:59:26,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:59:26,955 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 88 transitions. [2021-11-07 00:59:26,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.1627906976744184) internal successors, (93), 43 states have internal predecessors, (93), 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) [2021-11-07 00:59:26,955 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 88 transitions. [2021-11-07 00:59:26,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 00:59:26,957 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:59:26,957 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:59:26,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-07 00:59:27,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-11-07 00:59:27,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 00:59:27,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:59:27,558 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:59:27,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:59:27,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1133017440, now seen corresponding path program 4 times [2021-11-07 00:59:27,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:59:27,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690331945] [2021-11-07 00:59:27,559 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 00:59:27,559 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:59:27,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:59:27,560 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:59:27,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 00:59:27,973 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 00:59:27,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 00:59:27,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 00:59:27,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:59:28,785 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:28,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:59:29,930 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:29,931 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:59:29,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1690331945] [2021-11-07 00:59:29,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1690331945] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:59:29,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [668852668] [2021-11-07 00:59:29,931 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 00:59:29,931 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:59:29,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:59:29,934 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:59:29,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-07 00:59:30,602 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 00:59:30,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 00:59:30,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 00:59:30,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:59:31,603 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:31,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:59:32,229 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:32,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [668852668] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:59:32,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969650548] [2021-11-07 00:59:32,230 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 00:59:32,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:59:32,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:59:32,240 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:59:32,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-07 00:59:32,779 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 00:59:32,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 00:59:32,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-07 00:59:32,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:59:35,146 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:35,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:59:42,841 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:42,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969650548] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:59:42,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 00:59:42,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 11, 10, 19, 14] total 53 [2021-11-07 00:59:42,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130160974] [2021-11-07 00:59:42,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-11-07 00:59:42,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:59:42,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-11-07 00:59:42,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=2267, Unknown=0, NotChecked=0, Total=2756 [2021-11-07 00:59:42,844 INFO L87 Difference]: Start difference. First operand 72 states and 88 transitions. Second operand has 53 states, 53 states have (on average 2.509433962264151) internal successors, (133), 53 states have internal predecessors, (133), 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) [2021-11-07 00:59:54,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:59:54,047 INFO L93 Difference]: Finished difference Result 120 states and 145 transitions. [2021-11-07 00:59:54,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-07 00:59:54,047 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.509433962264151) internal successors, (133), 53 states have internal predecessors, (133), 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 [2021-11-07 00:59:54,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:59:54,048 INFO L225 Difference]: With dead ends: 120 [2021-11-07 00:59:54,048 INFO L226 Difference]: Without dead ends: 60 [2021-11-07 00:59:54,051 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1734 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=1243, Invalid=4919, Unknown=0, NotChecked=0, Total=6162 [2021-11-07 00:59:54,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-07 00:59:54,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 51. [2021-11-07 00:59:54,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 50 states have internal predecessors, (59), 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) [2021-11-07 00:59:54,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2021-11-07 00:59:54,062 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 31 [2021-11-07 00:59:54,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:59:54,062 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2021-11-07 00:59:54,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.509433962264151) internal successors, (133), 53 states have internal predecessors, (133), 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) [2021-11-07 00:59:54,063 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2021-11-07 00:59:54,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 00:59:54,064 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:59:54,064 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:59:54,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-07 00:59:54,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-07 00:59:54,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 00:59:54,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:59:54,668 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:59:54,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:59:54,669 INFO L85 PathProgramCache]: Analyzing trace with hash -779157991, now seen corresponding path program 1 times [2021-11-07 00:59:54,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:59:54,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1740755888] [2021-11-07 00:59:54,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:59:54,669 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:59:54,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:59:54,670 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:59:54,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 00:59:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:59:55,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-07 00:59:55,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:59:57,492 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:59:57,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:07,021 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:00:07,021 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:00:07,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1740755888] [2021-11-07 01:00:07,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1740755888] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:00:07,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [750450933] [2021-11-07 01:00:07,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:07,021 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:00:07,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:00:07,022 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:00:07,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-07 01:00:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:07,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-07 01:00:07,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:00:12,080 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 18 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:00:12,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:23,929 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:00:23,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [750450933] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:00:23,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028429561] [2021-11-07 01:00:23,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:23,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:00:23,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:00:23,931 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:00:23,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_240e3feb-8e61-48ba-bd34-5be1d0b43f4c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-07 01:00:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:24,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-07 01:00:24,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:00:28,084 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:00:28,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:50,482 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:00:50,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028429561] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:00:50,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:00:50,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 15, 13, 19, 16] total 58 [2021-11-07 01:00:50,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805742368] [2021-11-07 01:00:50,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-11-07 01:00:50,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:00:50,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-11-07 01:00:50,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=671, Invalid=2633, Unknown=2, NotChecked=0, Total=3306 [2021-11-07 01:00:50,487 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 58 states, 58 states have (on average 2.2241379310344827) internal successors, (129), 58 states have internal predecessors, (129), 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) [2021-11-07 01:02:16,973 WARN L207 SmtUtils]: Spent 1.16 m on a formula simplification that was a NOOP. DAG size: 177 [2021-11-07 01:02:32,422 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse48 (bvmul (_ bv2 32) c_ULTIMATE.start_main_~b~0))) (let ((.cse8 (bvudiv .cse48 (_ bv2 32)))) (let ((.cse16 (bvudiv (bvmul c_ULTIMATE.start_main_~b~0 (_ bv4 32)) (_ bv2 32))) (.cse1 (bvudiv c_ULTIMATE.start_main_~b~0 (_ bv2 32))) (.cse10 (bvudiv .cse8 (_ bv2 32)))) (let ((.cse23 (bvadd (_ bv1 32) (bvmul c_ULTIMATE.start_main_~q~0 (_ bv2 32)))) (.cse47 (bvudiv .cse10 (_ bv2 32))) (.cse7 (bvudiv .cse1 (_ bv2 32))) (.cse22 (bvudiv .cse16 (_ bv2 32)))) (let ((.cse18 (bvudiv .cse22 (_ bv2 32))) (.cse29 (bvudiv .cse7 (_ bv2 32))) (.cse42 (bvmul (_ bv5 32) .cse47)) (.cse44 (bvmul (_ bv8 32) (bvmul c_ULTIMATE.start_main_~q~0 .cse47))) (.cse45 (bvneg .cse47)) (.cse9 (bvadd (bvmul (_ bv2 32) (bvmul .cse8 c_ULTIMATE.start_main_~q~0)) .cse8)) (.cse49 (bvadd (bvmul (_ bv4294967295 32) .cse23 .cse8) c_ULTIMATE.start_main_~A~0))) (let ((.cse11 (not (bvuge .cse49 .cse47))) (.cse12 (bvuge .cse49 .cse10)) (.cse13 (= (bvadd .cse42 .cse44 .cse45) .cse9)) (.cse4 (bvneg c_ULTIMATE.start_main_~b~0)) (.cse24 (bvmul (_ bv8 32) (bvmul .cse29 c_ULTIMATE.start_main_~q~0))) (.cse25 (bvneg .cse29)) (.cse26 (bvmul (_ bv5 32) .cse29)) (.cse32 (bvmul (_ bv2 32) (bvmul .cse1 c_ULTIMATE.start_main_~q~0))) (.cse27 (bvneg .cse1)) (.cse30 (bvuge c_ULTIMATE.start_main_~r~0 .cse48)) (.cse19 (bvneg .cse18)) (.cse20 (bvmul (_ bv5 32) .cse18)) (.cse21 (bvmul (_ bv8 32) (bvmul .cse18 c_ULTIMATE.start_main_~q~0))) (.cse3 (bvmul (_ bv5 32) .cse7)) (.cse14 (bvmul c_ULTIMATE.start_main_~q~0 c_ULTIMATE.start_main_~b~0)) (.cse33 (bvuge c_ULTIMATE.start_main_~r~0 .cse1)) (.cse2 (bvneg .cse7)) (.cse5 (bvmul (_ bv4 32) (bvmul .cse7 c_ULTIMATE.start_main_~q~0))) (.cse6 (not (bvuge c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~b~0)))) (and (bvule c_ULTIMATE.start_main_~B~0 (_ bv5 32)) (let ((.cse0 (bvadd .cse4 c_ULTIMATE.start_main_~r~0))) (or (bvuge .cse0 .cse1) (= (bvadd .cse2 .cse3 .cse4 c_ULTIMATE.start_main_~r~0 .cse5) c_ULTIMATE.start_main_~A~0) .cse6 (not (bvuge .cse0 .cse7)))) (or (not (bvuge c_ULTIMATE.start_main_~r~0 .cse8)) (not (= .cse9 (bvadd (bvmul (_ bv2 32) .cse10) (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~q~0 .cse10))))) .cse11 .cse12 .cse13) (let ((.cse15 (bvadd (bvmul (_ bv4294967295 32) c_ULTIMATE.start_main_~q~0 c_ULTIMATE.start_main_~b~0) c_ULTIMATE.start_main_~A~0))) (or (= (bvadd .cse2 .cse7 .cse5) .cse14) (bvuge .cse15 .cse1) (not (bvuge .cse15 .cse7)))) (let ((.cse17 (bvadd c_ULTIMATE.start_main_~A~0 (bvmul (_ bv4294967295 32) .cse23 .cse16)))) (or (not (bvuge c_ULTIMATE.start_main_~r~0 .cse16)) (not (bvuge .cse17 .cse18)) (= (bvadd .cse19 .cse20 .cse21) (bvadd (bvmul (_ bv2 32) (bvmul .cse16 c_ULTIMATE.start_main_~q~0)) .cse16)) (bvuge .cse17 .cse22))) (let ((.cse28 (bvadd c_ULTIMATE.start_main_~r~0 .cse27))) (or (= c_ULTIMATE.start_main_~A~0 (bvadd .cse24 c_ULTIMATE.start_main_~r~0 .cse25 .cse26 .cse27)) (not (bvuge .cse28 .cse29)) (bvuge .cse28 .cse7))) (or .cse30 .cse11 .cse6 .cse12 .cse13) (or .cse6 (= (bvadd .cse14 .cse4 c_ULTIMATE.start_main_~b~0 c_ULTIMATE.start_main_~r~0) c_ULTIMATE.start_main_~A~0)) (let ((.cse31 (bvadd (bvmul (_ bv4294967295 32) .cse23 .cse1) c_ULTIMATE.start_main_~A~0))) (or (bvuge .cse31 .cse7) (not (bvuge .cse31 .cse29)) (= (bvadd .cse24 .cse25 .cse26) (bvadd .cse32 .cse1)))) (or (= (bvadd .cse32 .cse1 c_ULTIMATE.start_main_~r~0 .cse27) c_ULTIMATE.start_main_~A~0) (not .cse33)) (bvule c_ULTIMATE.start_main_~A~0 (_ bv5 32)) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (let ((.cse35 (bvneg .cse16))) (let ((.cse34 (bvadd .cse35 c_ULTIMATE.start_main_~r~0))) (or (not (bvuge .cse34 .cse18)) (not .cse30) (bvuge .cse34 .cse22) (= c_ULTIMATE.start_main_~A~0 (bvadd .cse35 .cse19 .cse20 c_ULTIMATE.start_main_~r~0 .cse21))))) (forall ((ULTIMATE.start_main_~b~0 (_ BitVec 32))) (let ((.cse40 (bvudiv (bvmul ULTIMATE.start_main_~b~0 (_ bv8 32)) (_ bv2 32)))) (let ((.cse39 (bvudiv .cse40 (_ bv2 32))) (.cse36 (bvneg .cse40))) (let ((.cse38 (bvadd .cse36 c_ULTIMATE.start_main_~r~0)) (.cse37 (bvudiv .cse39 (_ bv2 32)))) (or (not (bvuge c_ULTIMATE.start_main_~r~0 (bvmul ULTIMATE.start_main_~b~0 (_ bv4 32)))) (= (bvadd .cse36 (bvmul (_ bv8 32) (bvmul c_ULTIMATE.start_main_~q~0 .cse37)) c_ULTIMATE.start_main_~r~0 (bvneg .cse37) (bvmul (_ bv5 32) .cse37)) c_ULTIMATE.start_main_~A~0) (bvuge .cse38 .cse39) (not (bvuge .cse38 .cse37))))))) (let ((.cse41 (bvadd c_ULTIMATE.start_main_~A~0 (bvmul (_ bv4294967295 32) (bvadd c_ULTIMATE.start_main_~q~0 (_ bv1 32)) c_ULTIMATE.start_main_~b~0)))) (or (= (bvadd .cse2 .cse3 .cse5) (bvadd .cse14 c_ULTIMATE.start_main_~b~0)) (bvuge .cse41 .cse1) (not (bvuge .cse41 .cse7)))) (or .cse33 (= (bvadd .cse2 .cse7 c_ULTIMATE.start_main_~r~0 .cse5) c_ULTIMATE.start_main_~A~0) (not (bvuge c_ULTIMATE.start_main_~r~0 .cse7))) (let ((.cse43 (bvneg .cse8))) (let ((.cse46 (bvadd .cse43 c_ULTIMATE.start_main_~r~0))) (or (= (bvadd .cse42 .cse43 c_ULTIMATE.start_main_~r~0 .cse44 .cse45) c_ULTIMATE.start_main_~A~0) (not (bvuge .cse46 .cse47)) .cse6 (bvuge .cse46 .cse10))))))))))) is different from false [2021-11-07 01:02:43,940 WARN L207 SmtUtils]: Spent 8.52 s on a formula simplification that was a NOOP. DAG size: 52 [2021-11-07 01:02:57,230 WARN L207 SmtUtils]: Spent 8.76 s on a formula simplification that was a NOOP. DAG size: 56 [2021-11-07 01:03:12,698 WARN L207 SmtUtils]: Spent 10.54 s on a formula simplification that was a NOOP. DAG size: 52 [2021-11-07 01:04:02,108 WARN L207 SmtUtils]: Spent 45.80 s on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2021-11-07 01:04:27,346 WARN L207 SmtUtils]: Spent 16.28 s on a formula simplification that was a NOOP. DAG size: 34 [2021-11-07 01:04:40,477 WARN L207 SmtUtils]: Spent 11.72 s on a formula simplification that was a NOOP. DAG size: 83 [2021-11-07 01:05:27,399 WARN L207 SmtUtils]: Spent 44.40 s on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2021-11-07 01:05:45,324 WARN L207 SmtUtils]: Spent 16.44 s on a formula simplification that was a NOOP. DAG size: 33 [2021-11-07 01:05:58,391 WARN L207 SmtUtils]: Spent 11.16 s on a formula simplification that was a NOOP. DAG size: 79 [2021-11-07 01:06:48,115 WARN L207 SmtUtils]: Spent 45.13 s on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2021-11-07 01:07:01,642 WARN L207 SmtUtils]: Spent 11.84 s on a formula simplification that was a NOOP. DAG size: 87 [2021-11-07 01:07:28,815 WARN L207 SmtUtils]: Spent 15.24 s on a formula simplification that was a NOOP. DAG size: 84 [2021-11-07 01:08:13,052 WARN L207 SmtUtils]: Spent 35.65 s on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2021-11-07 01:08:32,742 WARN L207 SmtUtils]: Spent 15.18 s on a formula simplification that was a NOOP. DAG size: 81