./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/rlim_invariant.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl --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 dab30decfbae0c46e4e194ef831d046546cde9953841ff8fbd0a15005d51c024 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:07:27,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:07:27,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:07:27,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:07:27,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:07:27,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:07:27,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:07:27,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:07:27,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:07:27,629 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:07:27,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:07:27,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:07:27,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:07:27,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:07:27,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:07:27,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:07:27,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:07:27,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:07:27,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:07:27,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:07:27,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:07:27,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:07:27,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:07:27,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:07:27,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:07:27,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:07:27,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:07:27,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:07:27,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:07:27,672 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:07:27,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:07:27,674 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:07:27,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:07:27,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:07:27,681 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:07:27,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:07:27,684 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:07:27,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:07:27,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:07:27,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:07:27,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:07:27,688 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:07:27,749 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:07:27,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:07:27,751 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:07:27,751 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:07:27,758 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:07:27,759 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:07:27,759 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:07:27,760 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:07:27,760 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:07:27,760 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:07:27,761 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:07:27,762 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:07:27,762 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:07:27,762 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:07:27,762 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:07:27,763 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:07:27,763 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:07:27,763 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:07:27,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:07:27,764 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:07:27,765 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:07:27,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:07:27,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:07:27,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:07:27,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:07:27,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:07:27,767 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:07:27,768 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:07:27,768 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:07:27,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:07:27,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:07:27,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:07:27,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:07:27,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:07:27,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:07:27,770 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:07:27,770 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:07:27,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:07:27,771 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:07:27,771 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:07:27,771 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:07:27,771 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_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dab30decfbae0c46e4e194ef831d046546cde9953841ff8fbd0a15005d51c024 [2021-11-23 17:07:28,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:07:28,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:07:28,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:07:28,127 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:07:28,128 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:07:28,129 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/float-benchs/rlim_invariant.c.v+nlh-reducer.c [2021-11-23 17:07:28,197 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/data/090adb53f/8de43514f5fb4d288a730eeb894b8883/FLAG2d43fa9dd [2021-11-23 17:07:28,661 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:07:28,662 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+nlh-reducer.c [2021-11-23 17:07:28,671 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/data/090adb53f/8de43514f5fb4d288a730eeb894b8883/FLAG2d43fa9dd [2021-11-23 17:07:29,023 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/data/090adb53f/8de43514f5fb4d288a730eeb894b8883 [2021-11-23 17:07:29,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:07:29,028 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:07:29,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:07:29,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:07:29,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:07:29,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:07:29" (1/1) ... [2021-11-23 17:07:29,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56a7eec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:29, skipping insertion in model container [2021-11-23 17:07:29,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:07:29" (1/1) ... [2021-11-23 17:07:29,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:07:29,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:07:29,253 WARN L230 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_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+nlh-reducer.c[1545,1558] [2021-11-23 17:07:29,265 WARN L230 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_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+nlh-reducer.c[2749,2762] [2021-11-23 17:07:29,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:07:29,284 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:07:29,305 WARN L230 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_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+nlh-reducer.c[1545,1558] [2021-11-23 17:07:29,313 WARN L230 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_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+nlh-reducer.c[2749,2762] [2021-11-23 17:07:29,321 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:07:29,337 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:07:29,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:29 WrapperNode [2021-11-23 17:07:29,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:07:29,339 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:07:29,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:07:29,339 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:07:29,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:29" (1/1) ... [2021-11-23 17:07:29,357 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:29" (1/1) ... [2021-11-23 17:07:29,382 INFO L137 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 162 [2021-11-23 17:07:29,388 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:07:29,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:07:29,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:07:29,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:07:29,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:29" (1/1) ... [2021-11-23 17:07:29,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:29" (1/1) ... [2021-11-23 17:07:29,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:29" (1/1) ... [2021-11-23 17:07:29,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:29" (1/1) ... [2021-11-23 17:07:29,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:29" (1/1) ... [2021-11-23 17:07:29,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:29" (1/1) ... [2021-11-23 17:07:29,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:29" (1/1) ... [2021-11-23 17:07:29,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:07:29,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:07:29,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:07:29,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:07:29,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:29" (1/1) ... [2021-11-23 17:07:29,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:07:29,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:07:29,502 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:07:29,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:07:29,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:07:29,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:07:29,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:07:29,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:07:29,655 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:07:29,657 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:07:29,891 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:07:29,915 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:280) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$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) [2021-11-23 17:07:29,922 INFO L158 Benchmark]: Toolchain (without parser) took 892.22ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 34.1MB in the beginning and 63.5MB in the end (delta: -29.4MB). Peak memory consumption was 728.1kB. Max. memory is 16.1GB. [2021-11-23 17:07:29,923 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 75.5MB. Free memory is still 50.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:07:29,924 INFO L158 Benchmark]: CACSL2BoogieTranslator took 293.92ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 33.9MB in the beginning and 62.8MB in the end (delta: -28.8MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. [2021-11-23 17:07:29,925 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.02ms. Allocated memory is still 92.3MB. Free memory was 62.8MB in the beginning and 61.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:07:29,926 INFO L158 Benchmark]: Boogie Preprocessor took 51.60ms. Allocated memory is still 92.3MB. Free memory was 61.0MB in the beginning and 59.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:07:29,927 INFO L158 Benchmark]: RCFGBuilder took 477.85ms. Allocated memory is still 92.3MB. Free memory was 59.9MB in the beginning and 63.5MB in the end (delta: -3.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 17:07:29,940 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 75.5MB. Free memory is still 50.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 293.92ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 33.9MB in the beginning and 62.8MB in the end (delta: -28.8MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.02ms. Allocated memory is still 92.3MB. Free memory was 62.8MB in the beginning and 61.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.60ms. Allocated memory is still 92.3MB. Free memory was 61.0MB in the beginning and 59.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 477.85ms. Allocated memory is still 92.3MB. Free memory was 59.9MB in the beginning and 63.5MB in the end (delta: -3.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:07:30,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl --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 dab30decfbae0c46e4e194ef831d046546cde9953841ff8fbd0a15005d51c024 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:07:32,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:07:32,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:07:32,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:07:32,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:07:32,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:07:32,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:07:32,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:07:32,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:07:32,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:07:32,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:07:32,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:07:32,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:07:32,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:07:32,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:07:32,662 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:07:32,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:07:32,665 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:07:32,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:07:32,682 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:07:32,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:07:32,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:07:32,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:07:32,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:07:32,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:07:32,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:07:32,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:07:32,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:07:32,705 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:07:32,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:07:32,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:07:32,708 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:07:32,710 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:07:32,711 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:07:32,712 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:07:32,712 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:07:32,713 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:07:32,714 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:07:32,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:07:32,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:07:32,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:07:32,722 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:07:32,770 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:07:32,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:07:32,771 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:07:32,771 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:07:32,772 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:07:32,772 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:07:32,772 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:07:32,772 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:07:32,773 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:07:32,773 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:07:32,774 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:07:32,774 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:07:32,776 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:07:32,776 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:07:32,776 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:07:32,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:07:32,777 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:07:32,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:07:32,777 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:07:32,777 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:07:32,777 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:07:32,778 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:07:32,778 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:07:32,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:07:32,778 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:07:32,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:07:32,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:07:32,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:07:32,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:07:32,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:07:32,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:07:32,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:07:32,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:07:32,780 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:07:32,780 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:07:32,781 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:07:32,781 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:07:32,781 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:07:32,781 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_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dab30decfbae0c46e4e194ef831d046546cde9953841ff8fbd0a15005d51c024 [2021-11-23 17:07:33,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:07:33,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:07:33,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:07:33,222 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:07:33,223 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:07:33,225 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/float-benchs/rlim_invariant.c.v+nlh-reducer.c [2021-11-23 17:07:33,296 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/data/ed41e411c/600306a24adf463caaf7996a13b5995d/FLAG93ee5d721 [2021-11-23 17:07:33,930 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:07:33,930 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+nlh-reducer.c [2021-11-23 17:07:33,949 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/data/ed41e411c/600306a24adf463caaf7996a13b5995d/FLAG93ee5d721 [2021-11-23 17:07:34,250 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/data/ed41e411c/600306a24adf463caaf7996a13b5995d [2021-11-23 17:07:34,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:07:34,255 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:07:34,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:07:34,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:07:34,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:07:34,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:07:34" (1/1) ... [2021-11-23 17:07:34,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b4f15c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:34, skipping insertion in model container [2021-11-23 17:07:34,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:07:34" (1/1) ... [2021-11-23 17:07:34,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:07:34,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:07:34,504 WARN L230 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_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+nlh-reducer.c[1545,1558] [2021-11-23 17:07:34,535 WARN L230 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_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+nlh-reducer.c[2749,2762] [2021-11-23 17:07:34,555 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:07:34,585 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:07:34,627 WARN L230 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_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+nlh-reducer.c[1545,1558] [2021-11-23 17:07:34,633 WARN L230 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_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+nlh-reducer.c[2749,2762] [2021-11-23 17:07:34,644 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:07:34,669 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:07:34,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:34 WrapperNode [2021-11-23 17:07:34,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:07:34,671 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:07:34,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:07:34,671 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:07:34,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:34" (1/1) ... [2021-11-23 17:07:34,706 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:34" (1/1) ... [2021-11-23 17:07:34,750 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 163 [2021-11-23 17:07:34,751 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:07:34,752 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:07:34,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:07:34,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:07:34,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:34" (1/1) ... [2021-11-23 17:07:34,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:34" (1/1) ... [2021-11-23 17:07:34,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:34" (1/1) ... [2021-11-23 17:07:34,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:34" (1/1) ... [2021-11-23 17:07:34,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:34" (1/1) ... [2021-11-23 17:07:34,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:34" (1/1) ... [2021-11-23 17:07:34,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:34" (1/1) ... [2021-11-23 17:07:34,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:07:34,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:07:34,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:07:34,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:07:34,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:34" (1/1) ... [2021-11-23 17:07:34,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:07:34,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:07:34,854 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:07:34,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:07:34,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:07:34,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:07:34,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:07:34,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:07:35,021 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:07:35,023 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:07:37,295 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:07:37,301 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:07:37,301 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 17:07:37,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:07:37 BoogieIcfgContainer [2021-11-23 17:07:37,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:07:37,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:07:37,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:07:37,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:07:37,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:07:34" (1/3) ... [2021-11-23 17:07:37,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6642af93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:07:37, skipping insertion in model container [2021-11-23 17:07:37,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:07:34" (2/3) ... [2021-11-23 17:07:37,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6642af93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:07:37, skipping insertion in model container [2021-11-23 17:07:37,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:07:37" (3/3) ... [2021-11-23 17:07:37,328 INFO L111 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c.v+nlh-reducer.c [2021-11-23 17:07:37,334 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:07:37,334 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 17:07:37,384 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:07:37,392 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 17:07:37,392 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 17:07:37,407 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 43 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:07:37,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 17:07:37,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:07:37,414 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:07:37,414 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:07:37,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:07:37,420 INFO L85 PathProgramCache]: Analyzing trace with hash 350471322, now seen corresponding path program 1 times [2021-11-23 17:07:37,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:07:37,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1649062078] [2021-11-23 17:07:37,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:07:37,434 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:07:37,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:07:37,438 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:07:37,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:07:37,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:07:37,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 17:07:37,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:07:44,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:07:44,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:07:44,374 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:07:44,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1649062078] [2021-11-23 17:07:44,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1649062078] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:07:44,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:07:44,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 17:07:44,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696701897] [2021-11-23 17:07:44,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:07:44,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 17:07:44,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:07:44,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 17:07:44,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-11-23 17:07:44,418 INFO L87 Difference]: Start difference. First operand has 44 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 43 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 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) [2021-11-23 17:08:00,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:08:00,409 INFO L93 Difference]: Finished difference Result 122 states and 167 transitions. [2021-11-23 17:08:00,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 17:08:00,417 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 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 16 [2021-11-23 17:08:00,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:08:00,428 INFO L225 Difference]: With dead ends: 122 [2021-11-23 17:08:00,428 INFO L226 Difference]: Without dead ends: 68 [2021-11-23 17:08:00,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-23 17:08:00,436 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 76 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2021-11-23 17:08:00,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 291 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 189 Invalid, 0 Unknown, 40 Unchecked, 13.5s Time] [2021-11-23 17:08:00,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-23 17:08:00,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 41. [2021-11-23 17:08:00,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 39 states have (on average 1.358974358974359) internal successors, (53), 40 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:08:00,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 53 transitions. [2021-11-23 17:08:00,479 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 53 transitions. Word has length 16 [2021-11-23 17:08:00,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:08:00,480 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 53 transitions. [2021-11-23 17:08:00,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 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) [2021-11-23 17:08:00,481 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 53 transitions. [2021-11-23 17:08:00,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 17:08:00,482 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:08:00,482 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:08:00,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-23 17:08:00,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:08:00,697 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:08:00,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:08:00,698 INFO L85 PathProgramCache]: Analyzing trace with hash 257195701, now seen corresponding path program 1 times [2021-11-23 17:08:00,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:08:00,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320820434] [2021-11-23 17:08:00,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:08:00,702 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:08:00,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:08:00,705 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:08:00,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 17:08:00,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:08:00,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 17:08:00,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:08:00,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:08:00,891 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:08:00,891 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:08:00,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320820434] [2021-11-23 17:08:00,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [320820434] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:08:00,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:08:00,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 17:08:00,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183475168] [2021-11-23 17:08:00,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:08:00,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 17:08:00,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:08:00,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 17:08:00,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 17:08:00,895 INFO L87 Difference]: Start difference. First operand 41 states and 53 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2021-11-23 17:08:00,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:08:00,937 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2021-11-23 17:08:00,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 17:08:00,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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 16 [2021-11-23 17:08:00,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:08:00,939 INFO L225 Difference]: With dead ends: 66 [2021-11-23 17:08:00,939 INFO L226 Difference]: Without dead ends: 64 [2021-11-23 17:08:00,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 17:08:00,942 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 32 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 17:08:00,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 140 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 17:08:00,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-23 17:08:00,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 43. [2021-11-23 17:08:00,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 42 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) [2021-11-23 17:08:00,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2021-11-23 17:08:00,951 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 16 [2021-11-23 17:08:00,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:08:00,951 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2021-11-23 17:08:00,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2021-11-23 17:08:00,952 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2021-11-23 17:08:00,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 17:08:00,952 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:08:00,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:08:00,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 17:08:01,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:08:01,167 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:08:01,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:08:01,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1580255705, now seen corresponding path program 1 times [2021-11-23 17:08:01,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:08:01,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1266228695] [2021-11-23 17:08:01,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:08:01,168 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:08:01,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:08:01,170 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:08:01,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 17:08:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:08:01,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 17:08:01,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:08:07,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:08:07,658 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:08:07,658 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:08:07,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1266228695] [2021-11-23 17:08:07,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1266228695] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:08:07,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:08:07,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 17:08:07,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177323466] [2021-11-23 17:08:07,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:08:07,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 17:08:07,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:08:07,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 17:08:07,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-11-23 17:08:07,661 INFO L87 Difference]: Start difference. First operand 43 states and 55 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:08:17,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:08:17,627 INFO L93 Difference]: Finished difference Result 72 states and 93 transitions. [2021-11-23 17:08:17,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 17:08:17,635 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 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 17 [2021-11-23 17:08:17,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:08:17,637 INFO L225 Difference]: With dead ends: 72 [2021-11-23 17:08:17,637 INFO L226 Difference]: Without dead ends: 47 [2021-11-23 17:08:17,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-23 17:08:17,640 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 54 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-11-23 17:08:17,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 55 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 26 Unchecked, 6.9s Time] [2021-11-23 17:08:17,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-23 17:08:17,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2021-11-23 17:08:17,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 42 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) [2021-11-23 17:08:17,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2021-11-23 17:08:17,649 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 17 [2021-11-23 17:08:17,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:08:17,650 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2021-11-23 17:08:17,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:08:17,650 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2021-11-23 17:08:17,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 17:08:17,651 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:08:17,652 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:08:17,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 17:08:17,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:08:17,867 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:08:17,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:08:17,868 INFO L85 PathProgramCache]: Analyzing trace with hash -939704229, now seen corresponding path program 1 times [2021-11-23 17:08:17,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:08:17,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982930496] [2021-11-23 17:08:17,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:08:17,869 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:08:17,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:08:17,870 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:08:17,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 17:08:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:08:17,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 17:08:17,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:08:22,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:08:22,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:08:22,190 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:08:22,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1982930496] [2021-11-23 17:08:22,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1982930496] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:08:22,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:08:22,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 17:08:22,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539105237] [2021-11-23 17:08:22,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:08:22,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 17:08:22,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:08:22,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 17:08:22,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 17:08:22,193 INFO L87 Difference]: Start difference. First operand 43 states and 55 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:09:00,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:09:00,856 INFO L93 Difference]: Finished difference Result 134 states and 177 transitions. [2021-11-23 17:09:00,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 17:09:00,867 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 17 [2021-11-23 17:09:00,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:09:00,868 INFO L225 Difference]: With dead ends: 134 [2021-11-23 17:09:00,868 INFO L226 Difference]: Without dead ends: 109 [2021-11-23 17:09:00,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-23 17:09:00,871 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 97 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.6s IncrementalHoareTripleChecker+Time [2021-11-23 17:09:00,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 109 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 33.6s Time] [2021-11-23 17:09:00,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-23 17:09:00,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 54. [2021-11-23 17:09:00,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 53 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:09:00,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2021-11-23 17:09:00,886 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 17 [2021-11-23 17:09:00,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:09:00,887 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2021-11-23 17:09:00,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:09:00,887 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2021-11-23 17:09:00,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 17:09:00,888 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:09:00,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:09:00,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 17:09:01,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:09:01,092 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:09:01,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:09:01,092 INFO L85 PathProgramCache]: Analyzing trace with hash -530119343, now seen corresponding path program 1 times [2021-11-23 17:09:01,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:09:01,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077665084] [2021-11-23 17:09:01,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:09:01,093 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:09:01,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:09:01,094 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:09:01,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 17:09:01,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:09:01,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 17:09:01,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:09:12,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:09:12,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:09:12,624 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:09:12,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077665084] [2021-11-23 17:09:12,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1077665084] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:09:12,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:09:12,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 17:09:12,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622975630] [2021-11-23 17:09:12,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:09:12,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 17:09:12,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:09:12,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 17:09:12,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-11-23 17:09:12,627 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:09:21,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:09:21,579 INFO L93 Difference]: Finished difference Result 92 states and 120 transitions. [2021-11-23 17:09:21,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 17:09:21,583 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 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 17 [2021-11-23 17:09:21,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:09:21,586 INFO L225 Difference]: With dead ends: 92 [2021-11-23 17:09:21,586 INFO L226 Difference]: Without dead ends: 57 [2021-11-23 17:09:21,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-23 17:09:21,588 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 26 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-23 17:09:21,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 77 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 8 Unchecked, 5.9s Time] [2021-11-23 17:09:21,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-23 17:09:21,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2021-11-23 17:09:21,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 53 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:09:21,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2021-11-23 17:09:21,598 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 17 [2021-11-23 17:09:21,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:09:21,598 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2021-11-23 17:09:21,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:09:21,599 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2021-11-23 17:09:21,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 17:09:21,600 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:09:21,600 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:09:21,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 17:09:21,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:09:21,815 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:09:21,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:09:21,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1061509134, now seen corresponding path program 1 times [2021-11-23 17:09:21,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:09:21,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088863008] [2021-11-23 17:09:21,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:09:21,816 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:09:21,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:09:21,817 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:09:21,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 17:09:21,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:09:21,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 17:09:21,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:09:31,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:09:31,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:09:31,624 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:09:31,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088863008] [2021-11-23 17:09:31,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088863008] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:09:31,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:09:31,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 17:09:31,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533398698] [2021-11-23 17:09:31,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:09:31,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 17:09:31,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:09:31,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 17:09:31,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-11-23 17:09:31,627 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 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) [2021-11-23 17:09:42,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:09:42,481 INFO L93 Difference]: Finished difference Result 103 states and 136 transitions. [2021-11-23 17:09:42,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 17:09:42,490 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-23 17:09:42,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:09:42,491 INFO L225 Difference]: With dead ends: 103 [2021-11-23 17:09:42,491 INFO L226 Difference]: Without dead ends: 68 [2021-11-23 17:09:42,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-23 17:09:42,493 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 65 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-11-23 17:09:42,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 67 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 66 Unchecked, 7.7s Time] [2021-11-23 17:09:42,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-23 17:09:42,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 46. [2021-11-23 17:09:42,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 45 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:09:42,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2021-11-23 17:09:42,502 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 18 [2021-11-23 17:09:42,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:09:42,503 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2021-11-23 17:09:42,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 7 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) [2021-11-23 17:09:42,503 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2021-11-23 17:09:42,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-23 17:09:42,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:09:42,505 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:09:42,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-23 17:09:42,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:09:42,712 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:09:42,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:09:42,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1099426199, now seen corresponding path program 1 times [2021-11-23 17:09:42,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:09:42,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121788929] [2021-11-23 17:09:42,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:09:42,714 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:09:42,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:09:42,715 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:09:42,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 17:09:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:09:42,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 17:09:42,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:09:42,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:09:42,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:09:42,982 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:09:42,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [121788929] [2021-11-23 17:09:42,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [121788929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:09:42,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:09:42,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 17:09:42,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284505349] [2021-11-23 17:09:42,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:09:42,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 17:09:42,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:09:42,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 17:09:42,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 17:09:42,985 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:09:43,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:09:43,041 INFO L93 Difference]: Finished difference Result 78 states and 104 transitions. [2021-11-23 17:09:43,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 17:09:43,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-23 17:09:43,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:09:43,043 INFO L225 Difference]: With dead ends: 78 [2021-11-23 17:09:43,044 INFO L226 Difference]: Without dead ends: 76 [2021-11-23 17:09:43,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 17:09:43,045 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 45 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 17:09:43,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 153 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 17:09:43,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-11-23 17:09:43,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 48. [2021-11-23 17:09:43,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.3191489361702127) internal successors, (62), 47 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:09:43,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2021-11-23 17:09:43,058 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 30 [2021-11-23 17:09:43,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:09:43,058 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2021-11-23 17:09:43,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:09:43,059 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2021-11-23 17:09:43,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-23 17:09:43,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:09:43,061 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:09:43,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 17:09:43,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:09:43,279 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:09:43,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:09:43,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1082415538, now seen corresponding path program 1 times [2021-11-23 17:09:43,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:09:43,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1799489978] [2021-11-23 17:09:43,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:09:43,281 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:09:43,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:09:43,282 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:09:43,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 17:09:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:09:43,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-23 17:09:43,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:13:26,844 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~main__R~0#1_13| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24)) (|v_ULTIMATE.start_main_~main__D~0#1_21| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 16.0)) (.cse2 (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)) |v_ULTIMATE.start_main_~main__D~0#1_21|)) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 129.0)) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__D~0#1|))) (and (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven |v_ULTIMATE.start_main_~main__D~0#1_21|) .cse0) (fp.leq .cse1 .cse0) (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven .cse2) .cse3) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse2 |ULTIMATE.start_main_~main__D~0#1|)) (fp.neg .cse3))) (fp.leq |v_ULTIMATE.start_main_~main__R~0#1_13| (fp.neg |v_ULTIMATE.start_main_~main__D~0#1_21|)) (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |ULTIMATE.start_main_~main__D~0#1|)) (fp.geq .cse1 (_ +zero 11 53))))) is different from false [2021-11-23 17:13:28,868 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~main__R~0#1_13| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24)) (|v_ULTIMATE.start_main_~main__D~0#1_21| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 16.0)) (.cse2 (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)) |v_ULTIMATE.start_main_~main__D~0#1_21|)) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 129.0)) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__D~0#1|))) (and (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven |v_ULTIMATE.start_main_~main__D~0#1_21|) .cse0) (fp.leq .cse1 .cse0) (fp.leq ((_ to_fp 11 53) roundNearestTiesToEven .cse2) .cse3) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse2 |ULTIMATE.start_main_~main__D~0#1|)) (fp.neg .cse3))) (fp.leq |v_ULTIMATE.start_main_~main__R~0#1_13| (fp.neg |v_ULTIMATE.start_main_~main__D~0#1_21|)) (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |ULTIMATE.start_main_~main__D~0#1|)) (fp.geq .cse1 (_ +zero 11 53))))) is different from true [2021-11-23 17:17:11,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:17:11,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:17:11,995 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:17:11,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1799489978] [2021-11-23 17:17:11,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1799489978] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:17:11,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:17:11,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 17:17:11,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743558277] [2021-11-23 17:17:11,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:17:11,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 17:17:11,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:17:11,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 17:17:11,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=78, Unknown=15, NotChecked=20, Total=156 [2021-11-23 17:17:11,997 INFO L87 Difference]: Start difference. First operand 48 states and 62 transitions. Second operand has 13 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:17:22,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:17:22,084 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2021-11-23 17:17:22,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 17:17:22,092 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-23 17:17:22,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:17:22,093 INFO L225 Difference]: With dead ends: 69 [2021-11-23 17:17:22,093 INFO L226 Difference]: Without dead ends: 67 [2021-11-23 17:17:22,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 82.9s TimeCoverageRelationStatistics Valid=48, Invalid=96, Unknown=16, NotChecked=22, Total=182 [2021-11-23 17:17:22,094 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 36 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-23 17:17:22,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 72 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 107 Unchecked, 2.8s Time] [2021-11-23 17:17:22,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-23 17:17:22,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2021-11-23 17:17:22,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.328125) internal successors, (85), 64 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:17:22,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 85 transitions. [2021-11-23 17:17:22,108 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 85 transitions. Word has length 30 [2021-11-23 17:17:22,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:17:22,109 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 85 transitions. [2021-11-23 17:17:22,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:17:22,109 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 85 transitions. [2021-11-23 17:17:22,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-23 17:17:22,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:17:22,111 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:17:22,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 17:17:22,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:17:22,324 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:17:22,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:17:22,324 INFO L85 PathProgramCache]: Analyzing trace with hash -2049228407, now seen corresponding path program 1 times [2021-11-23 17:17:22,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:17:22,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374991080] [2021-11-23 17:17:22,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:17:22,325 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:17:22,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:17:22,326 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:17:22,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-23 17:17:22,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:17:22,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 17:17:22,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:17:22,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:17:22,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:17:22,592 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:17:22,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [374991080] [2021-11-23 17:17:22,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [374991080] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:17:22,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:17:22,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 17:17:22,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571213327] [2021-11-23 17:17:22,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:17:22,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:17:22,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:17:22,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:17:22,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:17:22,594 INFO L87 Difference]: Start difference. First operand 65 states and 85 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:17:22,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:17:22,843 INFO L93 Difference]: Finished difference Result 99 states and 131 transitions. [2021-11-23 17:17:22,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:17:22,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-23 17:17:22,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:17:22,845 INFO L225 Difference]: With dead ends: 99 [2021-11-23 17:17:22,845 INFO L226 Difference]: Without dead ends: 63 [2021-11-23 17:17:22,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:17:22,846 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 17:17:22,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 86 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 17:17:22,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-11-23 17:17:22,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-11-23 17:17:22,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.2419354838709677) internal successors, (77), 62 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:17:22,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 77 transitions. [2021-11-23 17:17:22,859 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 77 transitions. Word has length 30 [2021-11-23 17:17:22,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:17:22,859 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 77 transitions. [2021-11-23 17:17:22,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:17:22,860 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 77 transitions. [2021-11-23 17:17:22,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-23 17:17:22,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:17:22,861 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:17:22,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-23 17:17:23,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:17:23,075 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:17:23,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:17:23,076 INFO L85 PathProgramCache]: Analyzing trace with hash -345347405, now seen corresponding path program 1 times [2021-11-23 17:17:23,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:17:23,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1612171713] [2021-11-23 17:17:23,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:17:23,077 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:17:23,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:17:23,078 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:17:23,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-23 17:17:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:17:23,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 17:17:23,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:17:23,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:17:23,426 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:17:23,426 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:17:23,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1612171713] [2021-11-23 17:17:23,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1612171713] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:17:23,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:17:23,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 17:17:23,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689409121] [2021-11-23 17:17:23,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:17:23,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 17:17:23,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:17:23,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 17:17:23,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:17:23,428 INFO L87 Difference]: Start difference. First operand 63 states and 77 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:17:23,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:17:23,526 INFO L93 Difference]: Finished difference Result 88 states and 108 transitions. [2021-11-23 17:17:23,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 17:17:23,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-23 17:17:23,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:17:23,528 INFO L225 Difference]: With dead ends: 88 [2021-11-23 17:17:23,528 INFO L226 Difference]: Without dead ends: 56 [2021-11-23 17:17:23,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 17:17:23,530 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 17:17:23,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 17:17:23,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-23 17:17:23,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-11-23 17:17:23,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1636363636363636) internal successors, (64), 55 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:17:23,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2021-11-23 17:17:23,542 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 30 [2021-11-23 17:17:23,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:17:23,542 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2021-11-23 17:17:23,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:17:23,543 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2021-11-23 17:17:23,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-23 17:17:23,544 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:17:23,545 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:17:23,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-23 17:17:23,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:17:23,764 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:17:23,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:17:23,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1541729971, now seen corresponding path program 1 times [2021-11-23 17:17:23,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:17:23,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497555943] [2021-11-23 17:17:23,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:17:23,765 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:17:23,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:17:23,766 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:17:23,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cdd96fb1-e6b2-4951-abe7-62e8bc26c3ae/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 17:17:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:17:24,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 17:17:24,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:20:12,475 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~main__R~0#1_14| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24)) (|v_ULTIMATE.start_main_~main__D~0#1_22| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 16.0)) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven |v_ULTIMATE.start_main_~main__D~0#1_22|)) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__D~0#1|))) (and (fp.geq |v_ULTIMATE.start_main_~main__R~0#1_14| |v_ULTIMATE.start_main_~main__D~0#1_22|) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)) |v_ULTIMATE.start_main_~main__D~0#1_22|) |ULTIMATE.start_main_~main__D~0#1|)) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 129.0)))) (fp.leq .cse0 .cse1) (fp.leq .cse2 .cse1) (fp.geq .cse2 (_ +zero 11 53)) (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |ULTIMATE.start_main_~main__D~0#1|)) (fp.geq .cse0 (_ +zero 11 53))))) is different from false [2021-11-23 17:20:14,495 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~main__R~0#1_14| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__R~0#1| (_ FloatingPoint 8 24)) (|ULTIMATE.start_main_~main__D~0#1| (_ FloatingPoint 8 24)) (|v_ULTIMATE.start_main_~main__D~0#1_22| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 16.0)) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven |v_ULTIMATE.start_main_~main__D~0#1_22|)) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~main__D~0#1|))) (and (fp.geq |v_ULTIMATE.start_main_~main__R~0#1_14| |v_ULTIMATE.start_main_~main__D~0#1_22|) (not (fp.geq ((_ to_fp 11 53) roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)) |v_ULTIMATE.start_main_~main__D~0#1_22|) |ULTIMATE.start_main_~main__D~0#1|)) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 129.0)))) (fp.leq .cse0 .cse1) (fp.leq .cse2 .cse1) (fp.geq .cse2 (_ +zero 11 53)) (fp.leq |ULTIMATE.start_main_~main__R~0#1| (fp.neg |ULTIMATE.start_main_~main__D~0#1|)) (fp.geq .cse0 (_ +zero 11 53))))) is different from true