./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 02f127c20511fa02dafb6b2fc07e9971c3cba295 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 02f127c20511fa02dafb6b2fc07e9971c3cba295 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:00:14,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:00:14,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:00:14,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:00:14,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:00:14,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:00:14,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:00:14,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:00:14,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:00:14,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:00:14,480 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:00:14,482 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:00:14,483 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:00:14,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:00:14,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:00:14,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:00:14,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:00:14,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:00:14,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:00:14,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:00:14,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:00:14,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:00:14,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:00:14,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:00:14,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:00:14,526 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:00:14,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:00:14,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:00:14,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:00:14,531 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:00:14,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:00:14,533 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:00:14,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:00:14,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:00:14,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:00:14,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:00:14,539 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:00:14,539 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:00:14,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:00:14,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:00:14,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:00:14,542 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 03:00:14,584 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:00:14,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:00:14,590 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:00:14,590 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:00:14,590 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:00:14,590 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:00:14,591 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 03:00:14,591 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:00:14,598 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:00:14,598 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 03:00:14,599 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 03:00:14,600 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:00:14,600 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 03:00:14,601 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 03:00:14,601 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 03:00:14,602 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:00:14,602 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:00:14,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 03:00:14,603 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:00:14,603 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:00:14,603 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:00:14,603 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:00:14,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:00:14,604 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:00:14,604 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:00:14,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:00:14,605 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:00:14,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:00:14,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:00:14,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:00:14,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:00:14,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:00:14,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:00:14,609 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:00:14,609 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 03:00:14,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 03:00:14,609 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:00:14,610 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:00:14,610 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:00:14,610 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_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02f127c20511fa02dafb6b2fc07e9971c3cba295 [2021-10-16 03:00:14,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:00:14,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:00:14,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:00:14,930 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:00:14,932 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:00:14,933 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound2.i [2021-10-16 03:00:15,002 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/data/494d3ecf2/e5aba71079464bce8a8511dafd0a6564/FLAG358bbf3ba [2021-10-16 03:00:15,541 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:00:15,542 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound2.i [2021-10-16 03:00:15,552 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/data/494d3ecf2/e5aba71079464bce8a8511dafd0a6564/FLAG358bbf3ba [2021-10-16 03:00:15,921 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/data/494d3ecf2/e5aba71079464bce8a8511dafd0a6564 [2021-10-16 03:00:15,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:00:15,925 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:00:15,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:00:15,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:00:15,944 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:00:15,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:00:15" (1/1) ... [2021-10-16 03:00:15,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f90b714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:15, skipping insertion in model container [2021-10-16 03:00:15,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:00:15" (1/1) ... [2021-10-16 03:00:15,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:00:15,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:00:16,141 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_14181e77-8764-4835-bacf-e64e84b28eac/sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound2.i[951,964] [2021-10-16 03:00:16,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:00:16,166 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:00:16,178 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_14181e77-8764-4835-bacf-e64e84b28eac/sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound2.i[951,964] [2021-10-16 03:00:16,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:00:16,199 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:00:16,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:16 WrapperNode [2021-10-16 03:00:16,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:00:16,201 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:00:16,201 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:00:16,202 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:00:16,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:16" (1/1) ... [2021-10-16 03:00:16,218 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:16" (1/1) ... [2021-10-16 03:00:16,239 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:00:16,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:00:16,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:00:16,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:00:16,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:16" (1/1) ... [2021-10-16 03:00:16,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:16" (1/1) ... [2021-10-16 03:00:16,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:16" (1/1) ... [2021-10-16 03:00:16,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:16" (1/1) ... [2021-10-16 03:00:16,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:16" (1/1) ... [2021-10-16 03:00:16,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:16" (1/1) ... [2021-10-16 03:00:16,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:16" (1/1) ... [2021-10-16 03:00:16,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:00:16,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:00:16,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:00:16,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:00:16,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:16" (1/1) ... [2021-10-16 03:00:16,289 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:00:16,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:00:16,310 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:00:16,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:00:16,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 03:00:16,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:00:16,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:00:16,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:00:18,786 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:00:18,786 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-16 03:00:18,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:00:18 BoogieIcfgContainer [2021-10-16 03:00:18,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:00:18,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:00:18,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:00:18,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:00:18,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:00:15" (1/3) ... [2021-10-16 03:00:18,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4c46bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:00:18, skipping insertion in model container [2021-10-16 03:00:18,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:00:16" (2/3) ... [2021-10-16 03:00:18,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4c46bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:00:18, skipping insertion in model container [2021-10-16 03:00:18,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:00:18" (3/3) ... [2021-10-16 03:00:18,797 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_valuebound2.i [2021-10-16 03:00:18,803 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:00:18,803 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-16 03:00:18,864 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:00:18,870 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 03:00:18,871 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-16 03:00:18,885 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) [2021-10-16 03:00:18,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-16 03:00:18,890 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:00:18,891 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-16 03:00:18,892 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:00:18,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:00:18,898 INFO L82 PathProgramCache]: Analyzing trace with hash 104093823, now seen corresponding path program 1 times [2021-10-16 03:00:18,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:00:18,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038265193] [2021-10-16 03:00:18,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:00:18,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:00:19,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:00:19,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:19,067 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:00:19,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038265193] [2021-10-16 03:00:19,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038265193] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:00:19,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:00:19,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 03:00:19,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928818687] [2021-10-16 03:00:19,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 03:00:19,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:00:19,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 03:00:19,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 03:00:19,092 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) [2021-10-16 03:00:19,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:00:19,106 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2021-10-16 03:00:19,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 03:00:19,108 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-16 03:00:19,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:00:19,115 INFO L225 Difference]: With dead ends: 25 [2021-10-16 03:00:19,116 INFO L226 Difference]: Without dead ends: 12 [2021-10-16 03:00:19,118 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 03:00:19,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-16 03:00:19,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-16 03:00:19,146 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) [2021-10-16 03:00:19,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-10-16 03:00:19,148 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 5 [2021-10-16 03:00:19,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:00:19,149 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-10-16 03:00:19,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:00:19,150 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-10-16 03:00:19,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 03:00:19,150 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:00:19,151 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 03:00:19,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 03:00:19,151 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:00:19,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:00:19,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1128477837, now seen corresponding path program 1 times [2021-10-16 03:00:19,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:00:19,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138215114] [2021-10-16 03:00:19,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:00:19,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:00:19,191 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 03:00:19,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1841539823] [2021-10-16 03:00:19,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:00:19,192 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:00:19,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:00:19,201 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:00:19,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 03:00:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:00:19,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-16 03:00:19,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:00:19,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:19,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:00:19,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:19,828 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:00:19,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138215114] [2021-10-16 03:00:19,828 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 03:00:19,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841539823] [2021-10-16 03:00:19,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841539823] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:00:19,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:00:19,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 03:00:19,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163894265] [2021-10-16 03:00:19,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 03:00:19,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:00:19,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 03:00:19,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 03:00:19,833 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) [2021-10-16 03:00:22,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:00:22,252 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2021-10-16 03:00:22,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-16 03:00:22,253 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 [2021-10-16 03:00:22,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:00:22,253 INFO L225 Difference]: With dead ends: 32 [2021-10-16 03:00:22,254 INFO L226 Difference]: Without dead ends: 24 [2021-10-16 03:00:22,255 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 152.5ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-16 03:00:22,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-16 03:00:22,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2021-10-16 03:00:22,260 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) [2021-10-16 03:00:22,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-10-16 03:00:22,261 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 6 [2021-10-16 03:00:22,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:00:22,261 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-10-16 03:00:22,261 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) [2021-10-16 03:00:22,262 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-10-16 03:00:22,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 03:00:22,262 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:00:22,262 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2021-10-16 03:00:22,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 03:00:22,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:00:22,464 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:00:22,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:00:22,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1710175895, now seen corresponding path program 1 times [2021-10-16 03:00:22,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:00:22,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28454744] [2021-10-16 03:00:22,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:00:22,465 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:00:22,482 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 03:00:22,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1602249917] [2021-10-16 03:00:22,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:00:22,483 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:00:22,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:00:22,490 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:00:22,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-16 03:00:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:00:22,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 03:00:22,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:00:22,802 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-16 03:00:22,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:00:23,028 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-16 03:00:23,028 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:00:23,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28454744] [2021-10-16 03:00:23,029 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 03:00:23,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602249917] [2021-10-16 03:00:23,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602249917] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:00:23,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:00:23,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 03:00:23,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850261615] [2021-10-16 03:00:23,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-16 03:00:23,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:00:23,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-16 03:00:23,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-16 03:00:23,032 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:00:23,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:00:23,114 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2021-10-16 03:00:23,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:00:23,114 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-16 03:00:23,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:00:23,115 INFO L225 Difference]: With dead ends: 35 [2021-10-16 03:00:23,115 INFO L226 Difference]: Without dead ends: 29 [2021-10-16 03:00:23,116 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.2ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:00:23,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-16 03:00:23,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2021-10-16 03:00:23,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:00:23,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-10-16 03:00:23,120 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 10 [2021-10-16 03:00:23,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:00:23,121 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-10-16 03:00:23,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:00:23,121 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-10-16 03:00:23,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 03:00:23,122 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:00:23,122 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:00:23,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-16 03:00:23,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:00:23,323 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:00:23,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:00:23,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1522972369, now seen corresponding path program 1 times [2021-10-16 03:00:23,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:00:23,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899390167] [2021-10-16 03:00:23,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:00:23,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:00:23,339 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-16 03:00:23,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [567049111] [2021-10-16 03:00:23,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:00:23,344 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:00:23,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:00:23,346 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:00:23,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-16 03:00:23,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:00:23,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-16 03:00:23,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:00:23,953 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:00:23,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:01:15,078 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (div (mod c_ULTIMATE.start_main_~b~0 4294967296) 2))) (let ((.cse0 (* (- 1) c_ULTIMATE.start_main_~r~0)) (.cse1 (* (- 2) .cse3 c_ULTIMATE.start_main_~q~0)) (.cse2 (mod c_ULTIMATE.start_main_~A~0 4294967296))) (and (<= (div (+ .cse0 .cse1 .cse2) (- 4294967296)) (+ (div (+ (* 2 .cse3 c_ULTIMATE.start_main_~q~0) c_ULTIMATE.start_main_~r~0 (- 4294967296)) 4294967296) 1)) (<= (div (+ (- 1) .cse0 .cse1) (- 4294967296)) (div (+ (- 1) .cse0 .cse1 .cse2) (- 4294967296)))))) is different from false [2021-10-16 03:01:43,060 WARN L207 SmtUtils]: Spent 10.69 s on a formula simplification that was a NOOP. DAG size: 31 [2021-10-16 03:01:58,130 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_ULTIMATE.start_main_~r~0 4294967296)) (.cse1 (mod (* c_ULTIMATE.start_main_~b~0 2) 4294967296))) (or (< .cse0 (mod c_ULTIMATE.start_main_~b~0 4294967296)) (<= .cse1 .cse0) (let ((.cse5 (div .cse1 2))) (let ((.cse2 (* (- 2) c_ULTIMATE.start_main_~q~0 .cse5)) (.cse3 (* (- 1) c_ULTIMATE.start_main_~r~0)) (.cse4 (mod c_ULTIMATE.start_main_~A~0 4294967296))) (and (<= (div (+ .cse2 .cse3 .cse4) (- 4294967296)) (+ (div (+ (* 2 c_ULTIMATE.start_main_~q~0 .cse5) c_ULTIMATE.start_main_~r~0 (- 4294967296)) 4294967296) 1)) (<= (div (+ (- 1) .cse2 .cse3) (- 4294967296)) (div (+ (- 1) .cse2 .cse3 .cse4) (- 4294967296)))))))) is different from true [2021-10-16 03:02:06,811 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-10-16 03:02:06,812 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:02:06,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899390167] [2021-10-16 03:02:06,812 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-16 03:02:06,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567049111] [2021-10-16 03:02:06,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567049111] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:02:06,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1935606806] [2021-10-16 03:02:06,854 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-16 03:02:06,855 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 03:02:06,860 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 03:02:06,868 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 03:02:06,868 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 03:02:06,912 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:02:06,914 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:02:06,916 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:02:06,917 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-16 03:02:06,918 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 03:02:06,920 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:02:06,921 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-16 03:02:06,924 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-10-16 03:02:06,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 03:02:06,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-16 03:02:06,974 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:02:06,974 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 03:02:06,975 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:02:06,976 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 03:02:06,976 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 03:02:06,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:02:06,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 03:02:07,043 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-16 03:02:07,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 26 [2021-10-16 03:02:07,045 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:02:07,049 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-16 03:02:07,050 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:02:07,051 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-16 03:02:07,051 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-16 03:02:07,053 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:02:07,103 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:02:07,104 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 03:02:07,106 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-10-16 03:02:07,107 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 03:02:07,107 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:228, output treesize:101 [2021-10-16 03:02:07,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-16 03:02:07,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:02:07,321 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_16| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 03:02:07,324 INFO L168 Benchmark]: Toolchain (without parser) took 111399.24 ms. Allocated memory was 104.9 MB in the beginning and 130.0 MB in the end (delta: 25.2 MB). Free memory was 70.9 MB in the beginning and 78.6 MB in the end (delta: -7.7 MB). Peak memory consumption was 17.4 MB. Max. memory is 16.1 GB. [2021-10-16 03:02:07,325 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 104.9 MB. Free memory was 77.6 MB in the beginning and 77.6 MB in the end (delta: 26.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:02:07,326 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.32 ms. Allocated memory is still 104.9 MB. Free memory was 70.8 MB in the beginning and 81.6 MB in the end (delta: -10.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 03:02:07,326 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.32 ms. Allocated memory is still 104.9 MB. Free memory was 81.1 MB in the beginning and 80.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:02:07,327 INFO L168 Benchmark]: Boogie Preprocessor took 36.48 ms. Allocated memory is still 104.9 MB. Free memory was 80.0 MB in the beginning and 79.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:02:07,329 INFO L168 Benchmark]: RCFGBuilder took 2511.39 ms. Allocated memory is still 104.9 MB. Free memory was 78.5 MB in the beginning and 66.4 MB in the end (delta: 12.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:02:07,330 INFO L168 Benchmark]: TraceAbstraction took 108533.04 ms. Allocated memory was 104.9 MB in the beginning and 130.0 MB in the end (delta: 25.2 MB). Free memory was 65.9 MB in the beginning and 78.6 MB in the end (delta: -12.7 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2021-10-16 03:02:07,333 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 104.9 MB. Free memory was 77.6 MB in the beginning and 77.6 MB in the end (delta: 26.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 273.32 ms. Allocated memory is still 104.9 MB. Free memory was 70.8 MB in the beginning and 81.6 MB in the end (delta: -10.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.32 ms. Allocated memory is still 104.9 MB. Free memory was 81.1 MB in the beginning and 80.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.48 ms. Allocated memory is still 104.9 MB. Free memory was 80.0 MB in the beginning and 79.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2511.39 ms. Allocated memory is still 104.9 MB. Free memory was 78.5 MB in the beginning and 66.4 MB in the end (delta: 12.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 108533.04 ms. Allocated memory was 104.9 MB in the beginning and 130.0 MB in the end (delta: 25.2 MB). Free memory was 65.9 MB in the beginning and 78.6 MB in the end (delta: -12.7 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_16| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_16|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 03:02:07,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:02:09,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:02:09,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:02:09,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:02:09,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:02:09,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:02:09,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:02:09,872 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:02:09,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:02:09,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:02:09,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:02:09,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:02:09,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:02:09,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:02:09,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:02:09,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:02:09,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:02:09,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:02:09,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:02:09,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:02:09,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:02:09,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:02:09,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:02:09,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:02:09,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:02:09,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:02:09,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:02:09,911 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:02:09,912 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:02:09,913 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:02:09,914 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:02:09,915 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:02:09,916 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:02:09,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:02:09,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:02:09,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:02:09,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:02:09,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:02:09,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:02:09,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:02:09,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:02:09,924 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 03:02:09,953 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:02:09,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:02:09,954 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:02:09,955 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:02:09,955 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:02:09,956 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:02:09,956 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:02:09,956 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:02:09,957 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:02:09,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:02:09,958 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:02:09,958 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:02:09,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:02:09,959 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:02:09,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:02:09,960 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:02:09,960 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:02:09,960 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 03:02:09,961 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 03:02:09,961 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:02:09,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:02:09,962 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:02:09,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:02:09,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:02:09,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 03:02:09,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:02:09,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:02:09,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:02:09,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:02:09,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:02:09,965 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 03:02:09,965 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 03:02:09,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:02:09,966 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:02:09,966 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:02:09,967 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_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02f127c20511fa02dafb6b2fc07e9971c3cba295 [2021-10-16 03:02:10,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:02:10,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:02:10,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:02:10,361 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:02:10,362 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:02:10,363 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound2.i [2021-10-16 03:02:10,443 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/data/642798d45/e433cbc752ea4dc3b1ae84669fea33a3/FLAGea4571099 [2021-10-16 03:02:11,071 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:02:11,072 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound2.i [2021-10-16 03:02:11,082 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/data/642798d45/e433cbc752ea4dc3b1ae84669fea33a3/FLAGea4571099 [2021-10-16 03:02:11,371 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/data/642798d45/e433cbc752ea4dc3b1ae84669fea33a3 [2021-10-16 03:02:11,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:02:11,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:02:11,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:02:11,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:02:11,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:02:11,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:02:11" (1/1) ... [2021-10-16 03:02:11,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ed239f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:02:11, skipping insertion in model container [2021-10-16 03:02:11,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:02:11" (1/1) ... [2021-10-16 03:02:11,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:02:11,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:02:11,644 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_14181e77-8764-4835-bacf-e64e84b28eac/sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound2.i[951,964] [2021-10-16 03:02:11,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:02:11,687 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:02:11,707 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_14181e77-8764-4835-bacf-e64e84b28eac/sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound2.i[951,964] [2021-10-16 03:02:11,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:02:11,804 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:02:11,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:02:11 WrapperNode [2021-10-16 03:02:11,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:02:11,824 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:02:11,824 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:02:11,824 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:02:11,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:02:11" (1/1) ... [2021-10-16 03:02:11,846 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:02:11" (1/1) ... [2021-10-16 03:02:11,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:02:11,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:02:11,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:02:11,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:02:11,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:02:11" (1/1) ... [2021-10-16 03:02:11,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:02:11" (1/1) ... [2021-10-16 03:02:11,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:02:11" (1/1) ... [2021-10-16 03:02:11,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:02:11" (1/1) ... [2021-10-16 03:02:11,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:02:11" (1/1) ... [2021-10-16 03:02:11,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:02:11" (1/1) ... [2021-10-16 03:02:11,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:02:11" (1/1) ... [2021-10-16 03:02:11,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:02:11,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:02:11,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:02:11,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:02:11,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:02:11" (1/1) ... [2021-10-16 03:02:11,932 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:02:11,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:02:11,958 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:02:11,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:02:12,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 03:02:12,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:02:12,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:02:12,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:02:12,401 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:02:12,401 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-16 03:02:12,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:02:12 BoogieIcfgContainer [2021-10-16 03:02:12,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:02:12,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:02:12,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:02:12,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:02:12,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:02:11" (1/3) ... [2021-10-16 03:02:12,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db8c175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:02:12, skipping insertion in model container [2021-10-16 03:02:12,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:02:11" (2/3) ... [2021-10-16 03:02:12,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db8c175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:02:12, skipping insertion in model container [2021-10-16 03:02:12,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:02:12" (3/3) ... [2021-10-16 03:02:12,411 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_valuebound2.i [2021-10-16 03:02:12,417 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:02:12,417 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-16 03:02:12,461 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:02:12,468 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 03:02:12,468 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-16 03:02:12,482 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 19 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:12,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 03:02:12,487 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:02:12,487 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:02:12,488 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:02:12,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:02:12,494 INFO L82 PathProgramCache]: Analyzing trace with hash 119520859, now seen corresponding path program 1 times [2021-10-16 03:02:12,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:02:12,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741552730] [2021-10-16 03:02:12,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:02:12,507 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:02:12,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:02:12,530 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:02:12,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 03:02:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:02:12,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 03:02:12,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:02:12,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:02:12,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:02:12,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:02:12,703 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:02:12,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [741552730] [2021-10-16 03:02:12,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [741552730] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:02:12,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:02:12,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 03:02:12,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451935496] [2021-10-16 03:02:12,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 03:02:12,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:02:12,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 03:02:12,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 03:02:12,730 INFO L87 Difference]: Start difference. First operand has 20 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 19 states have internal predecessors, (29), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:12,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:02:12,745 INFO L93 Difference]: Finished difference Result 37 states and 54 transitions. [2021-10-16 03:02:12,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 03:02:12,747 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-10-16 03:02:12,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:02:12,756 INFO L225 Difference]: With dead ends: 37 [2021-10-16 03:02:12,756 INFO L226 Difference]: Without dead ends: 16 [2021-10-16 03:02:12,759 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 03:02:12,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-16 03:02:12,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-16 03:02:12,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:12,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-10-16 03:02:12,796 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 8 [2021-10-16 03:02:12,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:02:12,797 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-10-16 03:02:12,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:12,798 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-10-16 03:02:12,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 03:02:12,798 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:02:12,799 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:02:12,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 03:02:13,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:02:13,018 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:02:13,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:02:13,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1186643548, now seen corresponding path program 1 times [2021-10-16 03:02:13,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:02:13,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351160054] [2021-10-16 03:02:13,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:02:13,020 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:02:13,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:02:13,022 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:02:13,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 03:02:13,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:02:13,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-16 03:02:13,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:02:13,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:02:13,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:02:14,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:02:14,319 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:02:14,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1351160054] [2021-10-16 03:02:14,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1351160054] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:02:14,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:02:14,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 5] imperfect sequences [] total 10 [2021-10-16 03:02:14,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233663156] [2021-10-16 03:02:14,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 03:02:14,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:02:14,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 03:02:14,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-16 03:02:14,325 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 10 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:20,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:02:20,226 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2021-10-16 03:02:20,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 03:02:20,227 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-16 03:02:20,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:02:20,228 INFO L225 Difference]: With dead ends: 39 [2021-10-16 03:02:20,228 INFO L226 Difference]: Without dead ends: 31 [2021-10-16 03:02:20,230 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1811.9ms TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2021-10-16 03:02:20,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-16 03:02:20,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2021-10-16 03:02:20,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.28) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:20,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2021-10-16 03:02:20,238 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 9 [2021-10-16 03:02:20,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:02:20,238 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2021-10-16 03:02:20,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:20,239 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2021-10-16 03:02:20,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 03:02:20,240 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:02:20,240 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:02:20,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 03:02:20,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:02:20,452 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:02:20,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:02:20,453 INFO L82 PathProgramCache]: Analyzing trace with hash -580289007, now seen corresponding path program 1 times [2021-10-16 03:02:20,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:02:20,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [174449752] [2021-10-16 03:02:20,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:02:20,454 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:02:20,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:02:20,455 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:02:20,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 03:02:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:02:20,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 03:02:20,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:02:20,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:02:20,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:02:20,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:02:20,710 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:02:20,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [174449752] [2021-10-16 03:02:20,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [174449752] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:02:20,711 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:02:20,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 03:02:20,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233324249] [2021-10-16 03:02:20,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 03:02:20,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:02:20,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 03:02:20,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:02:20,715 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:20,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:02:20,806 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2021-10-16 03:02:20,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:02:20,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-16 03:02:20,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:02:20,810 INFO L225 Difference]: With dead ends: 40 [2021-10-16 03:02:20,811 INFO L226 Difference]: Without dead ends: 23 [2021-10-16 03:02:20,811 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 03:02:20,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-16 03:02:20,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-16 03:02:20,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:20,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-10-16 03:02:20,817 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 13 [2021-10-16 03:02:20,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:02:20,817 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-10-16 03:02:20,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:20,818 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-10-16 03:02:20,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 03:02:20,819 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:02:20,819 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:02:20,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-16 03:02:21,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:02:21,041 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:02:21,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:02:21,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1016668114, now seen corresponding path program 1 times [2021-10-16 03:02:21,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:02:21,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [797464710] [2021-10-16 03:02:21,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:02:21,043 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:02:21,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:02:21,045 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:02:21,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 03:02:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:02:21,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 03:02:21,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:02:21,522 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:02:21,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:02:22,621 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:02:22,621 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:02:22,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [797464710] [2021-10-16 03:02:22,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [797464710] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:02:22,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1037456504] [2021-10-16 03:02:22,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:02:22,623 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:02:22,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:02:22,630 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:02:22,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-10-16 03:02:22,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:02:22,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-16 03:02:22,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:02:23,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:02:23,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:02:29,855 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:02:29,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1037456504] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:02:29,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697692076] [2021-10-16 03:02:29,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:02:29,856 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:02:29,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:02:29,865 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:02:29,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-16 03:02:29,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:02:29,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-16 03:02:29,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:02:30,237 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:02:30,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:02:30,874 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:02:30,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697692076] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:02:30,874 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:02:30,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 8, 7, 8, 7] total 17 [2021-10-16 03:02:30,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925724274] [2021-10-16 03:02:30,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-16 03:02:30,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:02:30,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-16 03:02:30,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=198, Unknown=1, NotChecked=0, Total=272 [2021-10-16 03:02:30,878 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:37,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:02:37,157 INFO L93 Difference]: Finished difference Result 80 states and 101 transitions. [2021-10-16 03:02:37,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-16 03:02:37,159 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-16 03:02:37,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:02:37,160 INFO L225 Difference]: With dead ends: 80 [2021-10-16 03:02:37,160 INFO L226 Difference]: Without dead ends: 56 [2021-10-16 03:02:37,161 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 11089.4ms TimeCoverageRelationStatistics Valid=335, Invalid=786, Unknown=1, NotChecked=0, Total=1122 [2021-10-16 03:02:37,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-16 03:02:37,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 31. [2021-10-16 03:02:37,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 30 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:37,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2021-10-16 03:02:37,178 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 13 [2021-10-16 03:02:37,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:02:37,179 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2021-10-16 03:02:37,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:37,179 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2021-10-16 03:02:37,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-16 03:02:37,183 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:02:37,184 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:02:37,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-16 03:02:37,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-10-16 03:02:37,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-10-16 03:02:37,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:02:37,795 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:02:37,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:02:37,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1023135329, now seen corresponding path program 1 times [2021-10-16 03:02:37,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:02:37,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1075696974] [2021-10-16 03:02:37,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:02:37,797 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:02:37,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:02:37,802 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:02:37,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 03:02:37,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:02:37,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 03:02:37,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:02:38,087 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:02:38,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:02:38,198 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:02:38,198 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:02:38,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1075696974] [2021-10-16 03:02:38,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1075696974] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:02:38,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [503062541] [2021-10-16 03:02:38,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:02:38,199 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:02:38,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:02:38,215 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:02:38,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-10-16 03:02:38,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:02:38,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 03:02:38,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:02:38,511 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:02:38,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:02:38,598 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:02:38,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [503062541] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:02:38,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227998890] [2021-10-16 03:02:38,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:02:38,599 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:02:38,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:02:38,600 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:02:38,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-16 03:02:38,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:02:38,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-16 03:02:38,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:02:38,894 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:02:38,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:02:38,977 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:02:38,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227998890] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:02:38,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:02:38,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4, 5, 4, 5] total 7 [2021-10-16 03:02:38,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222733910] [2021-10-16 03:02:38,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-16 03:02:38,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:02:38,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-16 03:02:38,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-16 03:02:38,980 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:39,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:02:39,105 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2021-10-16 03:02:39,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:02:39,109 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-16 03:02:39,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:02:39,110 INFO L225 Difference]: With dead ends: 54 [2021-10-16 03:02:39,110 INFO L226 Difference]: Without dead ends: 27 [2021-10-16 03:02:39,110 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 100 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 58.9ms TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-16 03:02:39,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-16 03:02:39,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-16 03:02:39,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.12) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:39,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-10-16 03:02:39,116 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2021-10-16 03:02:39,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:02:39,116 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-10-16 03:02:39,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:02:39,116 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-10-16 03:02:39,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-16 03:02:39,117 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:02:39,117 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:02:39,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-10-16 03:02:39,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 03:02:39,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-10-16 03:02:39,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:02:39,719 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:02:39,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:02:39,719 INFO L82 PathProgramCache]: Analyzing trace with hash 2014308028, now seen corresponding path program 2 times [2021-10-16 03:02:39,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:02:39,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108185100] [2021-10-16 03:02:39,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 03:02:39,720 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:02:39,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:02:39,733 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:02:39,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-16 03:02:39,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 03:02:39,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:02:39,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-16 03:02:39,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:02:40,355 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:02:40,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:02:40,889 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:02:40,890 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:02:40,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108185100] [2021-10-16 03:02:40,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2108185100] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:02:40,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [881260466] [2021-10-16 03:02:40,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 03:02:40,891 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:02:40,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:02:40,897 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:02:40,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-10-16 03:02:41,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 03:02:41,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:02:41,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-16 03:02:41,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:02:41,441 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:02:41,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:02:41,632 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:02:41,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [881260466] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:02:41,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161444084] [2021-10-16 03:02:41,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 03:02:41,633 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:02:41,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:02:41,637 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:02:41,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-16 03:02:41,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 03:02:41,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:02:41,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-16 03:02:41,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:02:42,696 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:02:42,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:03:29,735 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:03:29,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161444084] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:03:29,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:03:29,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 12, 13] total 32 [2021-10-16 03:03:29,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312824981] [2021-10-16 03:03:29,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-16 03:03:29,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:03:29,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-16 03:03:29,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=795, Unknown=13, NotChecked=0, Total=992 [2021-10-16 03:03:29,739 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 32 states, 32 states have (on average 2.0625) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:05:44,494 WARN L207 SmtUtils]: Spent 1.45 m on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2021-10-16 03:06:23,512 WARN L207 SmtUtils]: Spent 6.88 s on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2021-10-16 03:06:42,727 WARN L207 SmtUtils]: Spent 6.09 s on a formula simplification. DAG size of input: 43 DAG size of output: 23 [2021-10-16 03:06:51,813 WARN L207 SmtUtils]: Spent 6.07 s on a formula simplification. DAG size of input: 49 DAG size of output: 30 [2021-10-16 03:07:18,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:07:18,254 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2021-10-16 03:07:18,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-16 03:07:18,258 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 32 states have internal predecessors, (66), 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 [2021-10-16 03:07:18,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:07:18,260 INFO L225 Difference]: With dead ends: 96 [2021-10-16 03:07:18,261 INFO L226 Difference]: Without dead ends: 86 [2021-10-16 03:07:18,262 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 238620.4ms TimeCoverageRelationStatistics Valid=537, Invalid=2171, Unknown=48, NotChecked=0, Total=2756 [2021-10-16 03:07:18,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-16 03:07:18,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 36. [2021-10-16 03:07:18,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 35 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:07:18,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2021-10-16 03:07:18,271 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 21 [2021-10-16 03:07:18,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:07:18,271 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2021-10-16 03:07:18,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.0625) internal successors, (66), 32 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:07:18,271 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2021-10-16 03:07:18,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-16 03:07:18,272 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:07:18,273 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:07:18,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-16 03:07:18,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2021-10-16 03:07:18,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-10-16 03:07:18,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:07:18,885 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:07:18,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:07:18,886 INFO L82 PathProgramCache]: Analyzing trace with hash 2014367610, now seen corresponding path program 1 times [2021-10-16 03:07:18,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:07:18,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093987372] [2021-10-16 03:07:18,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:07:18,886 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:07:18,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:07:18,887 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:07:18,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-16 03:07:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:07:19,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-16 03:07:19,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:07:20,577 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:07:20,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:07:23,570 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:07:23,571 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:07:23,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093987372] [2021-10-16 03:07:23,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093987372] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:07:23,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1134575005] [2021-10-16 03:07:23,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:07:23,571 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:07:23,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:07:23,585 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:07:23,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-10-16 03:07:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:07:23,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-16 03:07:23,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:07:25,278 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:07:25,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:07:31,625 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:07:31,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1134575005] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:07:31,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308566074] [2021-10-16 03:07:31,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:07:31,626 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:07:31,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:07:31,631 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:07:31,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-16 03:07:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:07:31,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-16 03:07:31,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:07:33,639 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:07:33,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:07:58,245 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:07:58,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308566074] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:07:58,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:07:58,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 11, 10, 14, 12] total 41 [2021-10-16 03:07:58,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145481647] [2021-10-16 03:07:58,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-10-16 03:07:58,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:07:58,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-10-16 03:07:58,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=361, Invalid=1279, Unknown=0, NotChecked=0, Total=1640 [2021-10-16 03:07:58,249 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 41 states, 41 states have (on average 2.1951219512195124) internal successors, (90), 41 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:08:09,427 WARN L207 SmtUtils]: Spent 6.46 s on a formula simplification. DAG size of input: 107 DAG size of output: 97 [2021-10-16 03:08:57,078 WARN L207 SmtUtils]: Spent 40.37 s on a formula simplification. DAG size of input: 104 DAG size of output: 93 [2021-10-16 03:09:46,340 WARN L207 SmtUtils]: Spent 28.34 s on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2021-10-16 03:10:08,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:10:08,955 INFO L93 Difference]: Finished difference Result 80 states and 93 transitions. [2021-10-16 03:10:08,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-16 03:10:08,960 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.1951219512195124) internal successors, (90), 41 states have internal predecessors, (90), 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 [2021-10-16 03:10:08,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:10:08,962 INFO L225 Difference]: With dead ends: 80 [2021-10-16 03:10:08,962 INFO L226 Difference]: Without dead ends: 68 [2021-10-16 03:10:08,964 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 80 SyntacticMatches, 4 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1241 ImplicationChecksByTransitivity, 133217.4ms TimeCoverageRelationStatistics Valid=871, Invalid=3419, Unknown=0, NotChecked=0, Total=4290 [2021-10-16 03:10:08,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-16 03:10:08,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 47. [2021-10-16 03:10:08,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 46 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:10:08,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2021-10-16 03:10:08,977 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 21 [2021-10-16 03:10:08,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:10:08,977 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2021-10-16 03:10:08,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.1951219512195124) internal successors, (90), 41 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:10:08,978 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2021-10-16 03:10:08,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-16 03:10:08,978 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:10:08,979 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:10:08,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-16 03:10:09,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2021-10-16 03:10:09,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-16 03:10:09,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:10:09,585 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:10:09,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:10:09,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1693831215, now seen corresponding path program 2 times [2021-10-16 03:10:09,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:10:09,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1844948981] [2021-10-16 03:10:09,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 03:10:09,586 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:10:09,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:10:09,587 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:10:09,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-16 03:10:09,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 03:10:09,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:10:09,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 03:10:09,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:10:10,527 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:10:10,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:10:10,942 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:10:10,942 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:10:10,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1844948981] [2021-10-16 03:10:10,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1844948981] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:10:10,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [899332407] [2021-10-16 03:10:10,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 03:10:10,943 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 03:10:10,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 03:10:10,944 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 03:10:10,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-10-16 03:10:11,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 03:10:11,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:10:11,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 03:10:11,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:10:11,804 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:10:11,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:10:11,987 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:10:11,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [899332407] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:10:11,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509566140] [2021-10-16 03:10:11,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-16 03:10:11,988 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 03:10:11,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:10:11,989 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 03:10:12,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-16 03:10:12,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-16 03:10:12,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-16 03:10:12,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 03:10:12,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:10:12,893 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:10:12,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:10:13,128 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:10:13,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509566140] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 03:10:13,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 03:10:13,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 5, 7, 5, 7] total 10 [2021-10-16 03:10:13,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816232243] [2021-10-16 03:10:13,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 03:10:13,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:10:13,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 03:10:13,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-16 03:10:13,131 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:10:13,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:10:13,359 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2021-10-16 03:10:13,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:10:13,363 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 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 [2021-10-16 03:10:13,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:10:13,364 INFO L225 Difference]: With dead ends: 47 [2021-10-16 03:10:13,364 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 03:10:13,364 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 130 SyntacticMatches, 6 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 389.3ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-16 03:10:13,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 03:10:13,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 03:10:13,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:10:13,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 03:10:13,365 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2021-10-16 03:10:13,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:10:13,365 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 03:10:13,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:10:13,366 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 03:10:13,366 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 03:10:13,368 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:10:13,368 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:10:13,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-16 03:10:13,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2021-10-16 03:10:13,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-16 03:10:13,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:10:13,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 03:10:13,977 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:10:14,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:10:14,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:10:14,203 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 03:10:19,191 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-10-16 03:10:19,191 INFO L857 garLoopResultBuilder]: For program point L19(lines 19 22) no Hoare annotation was computed. [2021-10-16 03:10:19,192 INFO L853 garLoopResultBuilder]: At program point L19-2(line 40) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse3 (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (.cse4 (bvule ULTIMATE.start_main_~A~0 (_ bv2 32)))) (let ((.cse5 (let ((.cse6 (= (bvadd (bvmul ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~A~0))) (or (and .cse0 .cse6 .cse3 .cse4 (or (not (bvuge ULTIMATE.start_main_~r~0 (bvmul ULTIMATE.start_main_~b~0 (_ bv2 32)))) (forall ((v_ULTIMATE.start_main_~b~0_24 (_ BitVec 32))) (= (bvadd (bvmul v_ULTIMATE.start_main_~b~0_24 ULTIMATE.start_main_~q~0) ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~A~0)))) (and .cse0 (bvuge ULTIMATE.start_main_~r~0 (bvmul ULTIMATE.start_main_~b~0 (_ bv4 32))) .cse6 .cse3 .cse4)))) (.cse1 (= ULTIMATE.start_main_~b~0 (bvmul (_ bv2 32) ULTIMATE.start_main_~B~0))) (.cse2 (= ULTIMATE.start_main_~B~0 (_ bv1 32)))) (or (and .cse0 .cse1 .cse2 .cse3 (forall ((ULTIMATE.start_main_~b~0 (_ BitVec 32))) (= (bvadd (bvmul ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~A~0)) .cse4) (and .cse5 .cse2 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~B~0)) (and .cse5 .cse1 (= ULTIMATE.start_main_~q~0 (_ bv1 32)) (bvuge ULTIMATE.start_main_~A~0 (_ bv2 32)) .cse2) (and (bvuge ULTIMATE.start_main_~r~0 (_ bv2 32)) .cse0 (= ULTIMATE.start_main_~q~0 (_ bv0 32)) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0) .cse2 (= ULTIMATE.start_main_~b~0 (bvmul (_ bv4 32) ULTIMATE.start_main_~B~0)) .cse3 .cse4)))) [2021-10-16 03:10:19,193 INFO L857 garLoopResultBuilder]: For program point L19-3(lines 19 22) no Hoare annotation was computed. [2021-10-16 03:10:19,193 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-10-16 03:10:19,193 INFO L860 garLoopResultBuilder]: At program point L19-5(lines 18 24) the Hoare annotation is: true [2021-10-16 03:10:19,193 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 03:10:19,193 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 03:10:19,193 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 03:10:19,194 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-10-16 03:10:19,194 INFO L857 garLoopResultBuilder]: For program point L20(lines 20 21) no Hoare annotation was computed. [2021-10-16 03:10:19,194 INFO L857 garLoopResultBuilder]: For program point L20-1(lines 20 21) no Hoare annotation was computed. [2021-10-16 03:10:19,194 INFO L860 garLoopResultBuilder]: At program point L49(lines 25 50) the Hoare annotation is: true [2021-10-16 03:10:19,195 INFO L857 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-10-16 03:10:19,195 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 03:10:19,195 INFO L857 garLoopResultBuilder]: For program point L38-1(lines 38 47) no Hoare annotation was computed. [2021-10-16 03:10:19,195 INFO L853 garLoopResultBuilder]: At program point L34-2(lines 34 37) the Hoare annotation is: (let ((.cse2 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse1 (= ULTIMATE.start_main_~q~0 (_ bv0 32))) (.cse3 (= ULTIMATE.start_main_~B~0 (_ bv1 32))) (.cse4 (bvule ULTIMATE.start_main_~A~0 (_ bv2 32)))) (or (and (bvuge ULTIMATE.start_main_~r~0 (_ bv2 32)) .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~b~0 (bvmul (_ bv4 32) ULTIMATE.start_main_~B~0)) .cse4) (and .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~B~0) .cse4) (and .cse0 (= ULTIMATE.start_main_~b~0 (bvmul (_ bv2 32) ULTIMATE.start_main_~B~0)) .cse1 .cse3 (= (bvadd (bvmul ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~A~0) .cse4))) [2021-10-16 03:10:19,195 INFO L857 garLoopResultBuilder]: For program point L43(lines 43 46) no Hoare annotation was computed. [2021-10-16 03:10:19,196 INFO L857 garLoopResultBuilder]: For program point L43-2(lines 25 50) no Hoare annotation was computed. [2021-10-16 03:10:19,196 INFO L857 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-10-16 03:10:19,206 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:10:19,216 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~b~0,QUANTIFIED] [2021-10-16 03:10:19,217 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~b~0_24,QUANTIFIED] [2021-10-16 03:10:19,217 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~b~0_24,QUANTIFIED] [2021-10-16 03:10:19,230 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~b~0,QUANTIFIED] [2021-10-16 03:10:19,233 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~b~0_24,QUANTIFIED] [2021-10-16 03:10:19,233 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~b~0_24,QUANTIFIED] [2021-10-16 03:10:19,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:10:19 BoogieIcfgContainer [2021-10-16 03:10:19,246 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 03:10:19,247 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 03:10:19,247 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 03:10:19,248 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 03:10:19,249 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:02:12" (3/4) ... [2021-10-16 03:10:19,252 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 03:10:19,263 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-16 03:10:19,264 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 03:10:19,264 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 03:10:19,264 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 03:10:19,313 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 03:10:19,313 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 03:10:19,314 INFO L168 Benchmark]: Toolchain (without parser) took 487930.70 ms. Allocated memory was 67.1 MB in the beginning and 90.2 MB in the end (delta: 23.1 MB). Free memory was 49.6 MB in the beginning and 43.3 MB in the end (delta: 6.2 MB). Peak memory consumption was 30.2 MB. Max. memory is 16.1 GB. [2021-10-16 03:10:19,315 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 67.1 MB. Free memory was 49.0 MB in the beginning and 48.9 MB in the end (delta: 54.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:10:19,315 INFO L168 Benchmark]: CACSL2BoogieTranslator took 436.35 ms. Allocated memory is still 67.1 MB. Free memory was 49.3 MB in the beginning and 51.6 MB in the end (delta: -2.3 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:10:19,316 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.84 ms. Allocated memory is still 67.1 MB. Free memory was 51.6 MB in the beginning and 49.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:10:19,316 INFO L168 Benchmark]: Boogie Preprocessor took 44.89 ms. Allocated memory is still 67.1 MB. Free memory was 49.9 MB in the beginning and 48.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:10:19,317 INFO L168 Benchmark]: RCFGBuilder took 481.47 ms. Allocated memory is still 67.1 MB. Free memory was 48.8 MB in the beginning and 39.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:10:19,317 INFO L168 Benchmark]: TraceAbstraction took 486841.63 ms. Allocated memory was 67.1 MB in the beginning and 90.2 MB in the end (delta: 23.1 MB). Free memory was 38.8 MB in the beginning and 46.3 MB in the end (delta: -7.5 MB). Peak memory consumption was 40.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:10:19,318 INFO L168 Benchmark]: Witness Printer took 66.07 ms. Allocated memory is still 90.2 MB. Free memory was 46.3 MB in the beginning and 43.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 03:10:19,320 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 67.1 MB. Free memory was 49.0 MB in the beginning and 48.9 MB in the end (delta: 54.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 436.35 ms. Allocated memory is still 67.1 MB. Free memory was 49.3 MB in the beginning and 51.6 MB in the end (delta: -2.3 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.84 ms. Allocated memory is still 67.1 MB. Free memory was 51.6 MB in the beginning and 49.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.89 ms. Allocated memory is still 67.1 MB. Free memory was 49.9 MB in the beginning and 48.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 481.47 ms. Allocated memory is still 67.1 MB. Free memory was 48.8 MB in the beginning and 39.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 486841.63 ms. Allocated memory was 67.1 MB in the beginning and 90.2 MB in the end (delta: 23.1 MB). Free memory was 38.8 MB in the beginning and 46.3 MB in the end (delta: -7.5 MB). Peak memory consumption was 40.1 MB. Max. memory is 16.1 GB. * Witness Printer took 66.07 ms. Allocated memory is still 90.2 MB. Free memory was 46.3 MB in the beginning and 43.3 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~b~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~b~0_24,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~b~0_24,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~b~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~b~0_24,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~b~0_24,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 486740.7ms, OverallIterations: 8, TraceHistogramMax: 4, EmptinessCheckTime: 17.0ms, AutomataDifference: 371939.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 5220.3ms, InitialAbstractionConstructionTime: 9.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 106 SDtfs, 767 SDslu, 499 SDs, 0 SdLazy, 944 SolverSat, 439 SolverUnsat, 18 SolverUnknown, 0 SolverNotchecked, 56456.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 694 GetRequests, 502 SyntacticMatches, 15 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2212 ImplicationChecksByTransitivity, 385191.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=7, InterpolantAutomatonStates: 99, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 75.3ms AutomataMinimizationTime, 8 MinimizatonAttempts, 100 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 16 NumberOfFragments, 257 HoareAnnotationTreeSize, 4 FomulaSimplifications, 158 FormulaSimplificationTreeSizeReduction, 244.1ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 293 FormulaSimplificationTreeSizeReductionInter, 4968.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 153.1ms SsaConstructionTime, 789.7ms SatisfiabilityAnalysisTime, 101596.7ms InterpolantComputationTime, 327 NumberOfCodeBlocks, 327 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 618 ConstructedInterpolants, 20 QuantifiedInterpolants, 5731 SizeOfPredicates, 80 NumberOfNonLiveVariables, 878 ConjunctsInSsa, 195 ConjunctsInUnsatCore, 36 InterpolantComputations, 6 PerfectInterpolantSequences, 118/412 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant [2021-10-16 03:10:19,335 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~b~0,QUANTIFIED] [2021-10-16 03:10:19,337 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~b~0_24,QUANTIFIED] [2021-10-16 03:10:19,337 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~b~0_24,QUANTIFIED] [2021-10-16 03:10:19,345 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~b~0,QUANTIFIED] [2021-10-16 03:10:19,346 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~b~0_24,QUANTIFIED] [2021-10-16 03:10:19,346 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~b~0_24,QUANTIFIED] Derived loop invariant: (((((((cond == 1bv32 && b == ~bvmul32(2bv32, B)) && B == 1bv32) && cond == 1bv32) && (forall ULTIMATE.start_main_~b~0 : bv32 :: ~bvadd64(~bvmul32(q, ULTIMATE.start_main_~b~0), r) == A)) && ~bvule32(A, 2bv32)) || (((((((cond == 1bv32 && ~bvadd64(~bvmul32(q, b), r) == A) && cond == 1bv32) && ~bvule32(A, 2bv32)) && (!~bvuge32(r, ~bvmul32(b, 2bv32)) || (forall v_ULTIMATE.start_main_~b~0_24 : bv32 :: ~bvadd64(~bvmul32(v_ULTIMATE.start_main_~b~0_24, q), r) == A))) || ((((cond == 1bv32 && ~bvuge32(r, ~bvmul32(b, 4bv32))) && ~bvadd64(~bvmul32(q, b), r) == A) && cond == 1bv32) && ~bvule32(A, 2bv32))) && B == 1bv32) && b == B)) || (((((((((cond == 1bv32 && ~bvadd64(~bvmul32(q, b), r) == A) && cond == 1bv32) && ~bvule32(A, 2bv32)) && (!~bvuge32(r, ~bvmul32(b, 2bv32)) || (forall v_ULTIMATE.start_main_~b~0_24 : bv32 :: ~bvadd64(~bvmul32(v_ULTIMATE.start_main_~b~0_24, q), r) == A))) || ((((cond == 1bv32 && ~bvuge32(r, ~bvmul32(b, 4bv32))) && ~bvadd64(~bvmul32(q, b), r) == A) && cond == 1bv32) && ~bvule32(A, 2bv32))) && b == ~bvmul32(2bv32, B)) && q == 1bv32) && ~bvuge32(A, 2bv32)) && B == 1bv32)) || (((((((~bvuge32(r, 2bv32) && cond == 1bv32) && q == 0bv32) && r == A) && B == 1bv32) && b == ~bvmul32(4bv32, B)) && cond == 1bv32) && ~bvule32(A, 2bv32)) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((((~bvuge32(r, 2bv32) && cond == 1bv32) && q == 0bv32) && r == A) && B == 1bv32) && b == ~bvmul32(4bv32, B)) && ~bvule32(A, 2bv32)) || (((((cond == 1bv32 && q == 0bv32) && r == A) && B == 1bv32) && b == B) && ~bvule32(A, 2bv32))) || (((((cond == 1bv32 && b == ~bvmul32(2bv32, B)) && q == 0bv32) && B == 1bv32) && ~bvadd64(~bvmul32(q, b), r) == A) && ~bvule32(A, 2bv32)) RESULT: Ultimate proved your program to be correct! [2021-10-16 03:10:19,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14181e77-8764-4835-bacf-e64e84b28eac/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...