./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3c6a51-63df-4a47-890b-fd475d5d432b/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3c6a51-63df-4a47-890b-fd475d5d432b/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3c6a51-63df-4a47-890b-fd475d5d432b/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3c6a51-63df-4a47-890b-fd475d5d432b/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3c6a51-63df-4a47-890b-fd475d5d432b/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3c6a51-63df-4a47-890b-fd475d5d432b/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8826306ae53b4154d29530d9da06b16418244e52 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:20:20,968 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:20:20,971 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:20:21,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:20:21,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:20:21,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:20:21,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:20:21,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:20:21,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:20:21,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:20:21,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:20:21,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:20:21,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:20:21,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:20:21,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:20:21,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:20:21,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:20:21,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:20:21,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:20:21,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:20:21,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:20:21,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:20:21,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:20:21,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:20:21,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:20:21,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:20:21,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:20:21,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:20:21,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:20:21,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:20:21,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:20:21,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:20:21,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:20:21,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:20:21,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:20:21,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:20:21,068 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:20:21,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:20:21,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:20:21,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:20:21,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:20:21,071 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3c6a51-63df-4a47-890b-fd475d5d432b/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:20:21,119 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:20:21,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:20:21,130 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:20:21,131 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:20:21,131 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:20:21,131 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:20:21,131 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:20:21,131 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:20:21,132 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:20:21,132 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:20:21,133 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:20:21,133 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:20:21,134 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:20:21,134 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:20:21,134 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:20:21,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:20:21,135 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:20:21,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:20:21,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:20:21,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:20:21,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:20:21,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:20:21,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:20:21,137 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:20:21,137 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:20:21,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:20:21,137 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:20:21,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:20:21,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:20:21,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:20:21,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:20:21,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:20:21,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:20:21,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:20:21,141 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:20:21,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:20:21,142 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:20:21,142 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:20:21,142 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:20:21,142 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_fb3c6a51-63df-4a47-890b-fd475d5d432b/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3c6a51-63df-4a47-890b-fd475d5d432b/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8826306ae53b4154d29530d9da06b16418244e52 [2021-10-11 02:20:21,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:20:21,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:20:21,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:20:21,435 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:20:21,436 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:20:21,437 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3c6a51-63df-4a47-890b-fd475d5d432b/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c [2021-10-11 02:20:21,506 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3c6a51-63df-4a47-890b-fd475d5d432b/bin/utaipan-WLngWcDbfI/data/958d1918d/f2834a67d28c4cd99b7181e4d79bd48f/FLAGf5e199aff [2021-10-11 02:20:21,959 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:20:21,960 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3c6a51-63df-4a47-890b-fd475d5d432b/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c [2021-10-11 02:20:22,014 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3c6a51-63df-4a47-890b-fd475d5d432b/bin/utaipan-WLngWcDbfI/data/958d1918d/f2834a67d28c4cd99b7181e4d79bd48f/FLAGf5e199aff [2021-10-11 02:20:22,347 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3c6a51-63df-4a47-890b-fd475d5d432b/bin/utaipan-WLngWcDbfI/data/958d1918d/f2834a67d28c4cd99b7181e4d79bd48f [2021-10-11 02:20:22,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:20:22,351 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:20:22,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:20:22,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:20:22,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:20:22,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:20:22" (1/1) ... [2021-10-11 02:20:22,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cca88b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:22, skipping insertion in model container [2021-10-11 02:20:22,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:20:22" (1/1) ... [2021-10-11 02:20:22,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:20:22,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:20:22,532 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3c6a51-63df-4a47-890b-fd475d5d432b/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c[573,586] [2021-10-11 02:20:22,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:20:22,555 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:20:22,568 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3c6a51-63df-4a47-890b-fd475d5d432b/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c[573,586] [2021-10-11 02:20:22,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:20:22,590 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:20:22,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:22 WrapperNode [2021-10-11 02:20:22,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:20:22,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:20:22,592 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:20:22,592 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:20:22,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:22" (1/1) ... [2021-10-11 02:20:22,608 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:22" (1/1) ... [2021-10-11 02:20:22,629 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:20:22,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:20:22,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:20:22,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:20:22,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:22" (1/1) ... [2021-10-11 02:20:22,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:22" (1/1) ... [2021-10-11 02:20:22,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:22" (1/1) ... [2021-10-11 02:20:22,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:22" (1/1) ... [2021-10-11 02:20:22,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:22" (1/1) ... [2021-10-11 02:20:22,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:22" (1/1) ... [2021-10-11 02:20:22,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:22" (1/1) ... [2021-10-11 02:20:22,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:20:22,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:20:22,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:20:22,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:20:22,667 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:22" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3c6a51-63df-4a47-890b-fd475d5d432b/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:20:22,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:20:22,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:20:22,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:20:22,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:20:23,103 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:20:23,103 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-11 02:20:23,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:23 BoogieIcfgContainer [2021-10-11 02:20:23,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:20:23,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:20:23,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:20:23,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:20:23,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:20:22" (1/3) ... [2021-10-11 02:20:23,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c4ffe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:20:23, skipping insertion in model container [2021-10-11 02:20:23,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:22" (2/3) ... [2021-10-11 02:20:23,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c4ffe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:20:23, skipping insertion in model container [2021-10-11 02:20:23,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:23" (3/3) ... [2021-10-11 02:20:23,113 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound10.c [2021-10-11 02:20:23,131 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:20:23,146 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 02:20:23,173 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-11 02:20:23,231 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:20:23,231 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:20:23,232 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:20:23,232 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:20:23,232 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:20:23,232 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:20:23,232 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:20:23,233 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:20:23,247 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2021-10-11 02:20:23,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:20:23,252 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:23,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:20:23,253 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:23,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:23,263 INFO L82 PathProgramCache]: Analyzing trace with hash 98480205, now seen corresponding path program 1 times [2021-10-11 02:20:23,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:23,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338887532] [2021-10-11 02:20:23,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:23,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:23,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338887532] [2021-10-11 02:20:23,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:23,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:20:23,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054847020] [2021-10-11 02:20:23,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:20:23,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:23,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:20:23,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:20:23,434 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2021-10-11 02:20:23,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:23,449 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2021-10-11 02:20:23,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:20:23,451 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2021-10-11 02:20:23,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:23,458 INFO L225 Difference]: With dead ends: 25 [2021-10-11 02:20:23,459 INFO L226 Difference]: Without dead ends: 11 [2021-10-11 02:20:23,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:20:23,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-11 02:20:23,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-11 02:20:23,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-11 02:20:23,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-10-11 02:20:23,492 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 5 [2021-10-11 02:20:23,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:23,492 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-10-11 02:20:23,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:20:23,493 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2021-10-11 02:20:23,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:20:23,493 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:23,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:20:23,494 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:20:23,494 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:23,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:23,495 INFO L82 PathProgramCache]: Analyzing trace with hash 97621232, now seen corresponding path program 1 times [2021-10-11 02:20:23,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:23,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33852655] [2021-10-11 02:20:23,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:23,516 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:20:23,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [879590861] [2021-10-11 02:20:23,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3c6a51-63df-4a47-890b-fd475d5d432b/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:20:23,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:23,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-11 02:20:23,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:20:23,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:23,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:20:23,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:23,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33852655] [2021-10-11 02:20:23,762 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:20:23,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879590861] [2021-10-11 02:20:23,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:23,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-11 02:20:23,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315341111] [2021-10-11 02:20:23,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:20:23,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:23,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:20:23,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:20:23,771 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 6 states. [2021-10-11 02:20:23,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:23,885 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-10-11 02:20:23,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:20:23,886 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2021-10-11 02:20:23,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:23,887 INFO L225 Difference]: With dead ends: 20 [2021-10-11 02:20:23,887 INFO L226 Difference]: Without dead ends: 18 [2021-10-11 02:20:23,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:20:23,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-11 02:20:23,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 9. [2021-10-11 02:20:23,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-11 02:20:23,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-10-11 02:20:23,898 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 5 [2021-10-11 02:20:23,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:23,906 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-10-11 02:20:23,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:20:23,906 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2021-10-11 02:20:23,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:20:23,907 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:23,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:20:24,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-11 02:20:24,128 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:24,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:24,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1268746775, now seen corresponding path program 1 times [2021-10-11 02:20:24,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:24,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282749267] [2021-10-11 02:20:24,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:24,150 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:20:24,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [720699094] [2021-10-11 02:20:24,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3c6a51-63df-4a47-890b-fd475d5d432b/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:20:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:24,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:20:24,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:20:24,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:24,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:20:24,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:24,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282749267] [2021-10-11 02:20:24,287 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:20:24,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720699094] [2021-10-11 02:20:24,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:24,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-11 02:20:24,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396087864] [2021-10-11 02:20:24,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:20:24,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:24,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:20:24,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:20:24,289 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 6 states. [2021-10-11 02:20:24,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:24,320 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2021-10-11 02:20:24,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:20:24,320 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2021-10-11 02:20:24,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:24,321 INFO L225 Difference]: With dead ends: 23 [2021-10-11 02:20:24,321 INFO L226 Difference]: Without dead ends: 19 [2021-10-11 02:20:24,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:20:24,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-11 02:20:24,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2021-10-11 02:20:24,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-11 02:20:24,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-10-11 02:20:24,328 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 6 [2021-10-11 02:20:24,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:24,328 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-10-11 02:20:24,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:20:24,329 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-10-11 02:20:24,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:20:24,329 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:24,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:20:24,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:20:24,543 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:24,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:24,543 INFO L82 PathProgramCache]: Analyzing trace with hash 546169794, now seen corresponding path program 1 times [2021-10-11 02:20:24,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:24,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647295453] [2021-10-11 02:20:24,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:24,561 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:20:24,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [614940431] [2021-10-11 02:20:24,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3c6a51-63df-4a47-890b-fd475d5d432b/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:20:24,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:24,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-11 02:20:24,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:20:24,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:24,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:20:24,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:24,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647295453] [2021-10-11 02:20:24,809 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:20:24,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614940431] [2021-10-11 02:20:24,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:20:24,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-11 02:20:24,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975990470] [2021-10-11 02:20:24,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-10-11 02:20:24,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:24,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-11 02:20:24,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:20:24,815 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 11 states. [2021-10-11 02:20:24,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:24,964 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-11 02:20:24,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:20:24,964 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 8 [2021-10-11 02:20:24,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:24,965 INFO L225 Difference]: With dead ends: 19 [2021-10-11 02:20:24,965 INFO L226 Difference]: Without dead ends: 15 [2021-10-11 02:20:24,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-10-11 02:20:24,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-11 02:20:24,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-11 02:20:24,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-11 02:20:24,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-10-11 02:20:24,971 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2021-10-11 02:20:24,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:24,971 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-10-11 02:20:24,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-10-11 02:20:24,972 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-10-11 02:20:24,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 02:20:24,973 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:24,973 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-11 02:20:25,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:20:25,187 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:25,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:25,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1998402165, now seen corresponding path program 1 times [2021-10-11 02:20:25,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:25,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314529688] [2021-10-11 02:20:25,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:25,201 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:20:25,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1564436534] [2021-10-11 02:20:25,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3c6a51-63df-4a47-890b-fd475d5d432b/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:20:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:20:25,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:20:25,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:20:25,326 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:25,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:20:25,405 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:25,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314529688] [2021-10-11 02:20:25,405 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:20:25,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564436534] [2021-10-11 02:20:25,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [728241563] [2021-10-11 02:20:25,430 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-11 02:20:25,430 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:20:25,440 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:20:25,450 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:20:25,450 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:20:25,590 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:20:26,265 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:20:26,513 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2021-10-11 02:20:26,713 WARN L197 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2021-10-11 02:20:27,049 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2021-10-11 02:20:27,254 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:20:27,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:20:27,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-11 02:20:27,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391763864] [2021-10-11 02:20:27,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-10-11 02:20:27,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:27,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 02:20:27,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-10-11 02:20:27,256 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 10 states. [2021-10-11 02:20:27,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:27,365 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2021-10-11 02:20:27,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-11 02:20:27,365 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2021-10-11 02:20:27,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:27,366 INFO L225 Difference]: With dead ends: 35 [2021-10-11 02:20:27,366 INFO L226 Difference]: Without dead ends: 31 [2021-10-11 02:20:27,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2021-10-11 02:20:27,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-11 02:20:27,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-10-11 02:20:27,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-10-11 02:20:27,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-10-11 02:20:27,374 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 14 [2021-10-11 02:20:27,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:27,374 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-10-11 02:20:27,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-10-11 02:20:27,374 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-10-11 02:20:27,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-11 02:20:27,375 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:27,375 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1] [2021-10-11 02:20:27,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:20:27,603 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:27,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:27,603 INFO L82 PathProgramCache]: Analyzing trace with hash 652162767, now seen corresponding path program 2 times [2021-10-11 02:20:27,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:27,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347507677] [2021-10-11 02:20:27,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:27,616 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:20:27,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1768306801] [2021-10-11 02:20:27,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3c6a51-63df-4a47-890b-fd475d5d432b/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:20:27,697 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-10-11 02:20:27,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:20:27,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-11 02:20:27,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:20:27,801 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:27,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:20:27,927 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:20:27,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347507677] [2021-10-11 02:20:27,928 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:20:27,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768306801] [2021-10-11 02:20:27,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [127942810] [2021-10-11 02:20:27,932 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-11 02:20:27,933 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:20:27,934 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:20:27,934 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:20:27,935 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:20:27,996 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-11 02:20:28,471 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:20:28,705 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2021-10-11 02:20:28,878 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2021-10-11 02:20:29,180 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2021-10-11 02:20:29,388 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:20:29,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-11 02:20:29,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-10-11 02:20:29,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418826141] [2021-10-11 02:20:29,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-10-11 02:20:29,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:20:29,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-11 02:20:29,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2021-10-11 02:20:29,391 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 14 states. [2021-10-11 02:20:29,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:20:29,583 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2021-10-11 02:20:29,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-11 02:20:29,584 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 30 [2021-10-11 02:20:29,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:20:29,586 INFO L225 Difference]: With dead ends: 51 [2021-10-11 02:20:29,586 INFO L226 Difference]: Without dead ends: 47 [2021-10-11 02:20:29,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=212, Invalid=658, Unknown=0, NotChecked=0, Total=870 [2021-10-11 02:20:29,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-11 02:20:29,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-10-11 02:20:29,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-10-11 02:20:29,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2021-10-11 02:20:29,622 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 30 [2021-10-11 02:20:29,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:20:29,622 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2021-10-11 02:20:29,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-10-11 02:20:29,623 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2021-10-11 02:20:29,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-11 02:20:29,625 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:20:29,625 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1] [2021-10-11 02:20:29,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-10-11 02:20:29,843 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:20:29,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:20:29,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1711839251, now seen corresponding path program 3 times [2021-10-11 02:20:29,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:20:29,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525246642] [2021-10-11 02:20:29,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:20:29,864 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:20:29,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1922204520] [2021-10-11 02:20:29,864 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3c6a51-63df-4a47-890b-fd475d5d432b/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:20:29,953 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-11 02:20:29,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-10-11 02:20:29,953 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:20:29,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:20:29,998 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:20:30,196 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:20:30,196 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:20:30,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:20:30,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:20:30 BoogieIcfgContainer [2021-10-11 02:20:30,450 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:20:30,451 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:20:30,451 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:20:30,451 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:20:30,451 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:23" (3/4) ... [2021-10-11 02:20:30,453 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:20:30,523 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3c6a51-63df-4a47-890b-fd475d5d432b/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:20:30,524 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:20:30,525 INFO L168 Benchmark]: Toolchain (without parser) took 8173.61 ms. Allocated memory was 98.6 MB in the beginning and 165.7 MB in the end (delta: 67.1 MB). Free memory was 77.9 MB in the beginning and 85.5 MB in the end (delta: -7.6 MB). Peak memory consumption was 58.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:30,525 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 81.8 MB. Free memory is still 58.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:20:30,526 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.95 ms. Allocated memory is still 98.6 MB. Free memory was 77.7 MB in the beginning and 68.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:30,526 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.08 ms. Allocated memory is still 98.6 MB. Free memory was 68.0 MB in the beginning and 66.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:20:30,527 INFO L168 Benchmark]: Boogie Preprocessor took 26.41 ms. Allocated memory is still 98.6 MB. Free memory was 66.5 MB in the beginning and 65.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:30,527 INFO L168 Benchmark]: RCFGBuilder took 448.73 ms. Allocated memory is still 98.6 MB. Free memory was 65.2 MB in the beginning and 44.8 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:30,528 INFO L168 Benchmark]: TraceAbstraction took 7343.22 ms. Allocated memory was 98.6 MB in the beginning and 165.7 MB in the end (delta: 67.1 MB). Free memory was 44.4 MB in the beginning and 89.7 MB in the end (delta: -45.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:30,528 INFO L168 Benchmark]: Witness Printer took 73.21 ms. Allocated memory is still 165.7 MB. Free memory was 89.7 MB in the beginning and 85.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:20:30,531 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 81.8 MB. Free memory is still 58.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 238.95 ms. Allocated memory is still 98.6 MB. Free memory was 77.7 MB in the beginning and 68.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.08 ms. Allocated memory is still 98.6 MB. Free memory was 68.0 MB in the beginning and 66.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.41 ms. Allocated memory is still 98.6 MB. Free memory was 66.5 MB in the beginning and 65.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 448.73 ms. Allocated memory is still 98.6 MB. Free memory was 65.2 MB in the beginning and 44.8 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7343.22 ms. Allocated memory was 98.6 MB in the beginning and 165.7 MB in the end (delta: 67.1 MB). Free memory was 44.4 MB in the beginning and 89.7 MB in the end (delta: -45.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 16.1 GB. * Witness Printer took 73.21 ms. Allocated memory is still 165.7 MB. Free memory was 89.7 MB in the beginning and 85.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; [L24] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L13] COND FALSE !(!cond) [L13] COND FALSE !(!cond) [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 VAL [counter=0] [L36] EXPR counter++ VAL [counter=1] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=1] [L36] EXPR counter++ VAL [counter=2] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=2] [L36] EXPR counter++ VAL [counter=3] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=3] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=3] [L36] EXPR counter++ VAL [counter=4] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=4] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=4] [L36] EXPR counter++ VAL [counter=5] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=5] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=5] [L36] EXPR counter++ VAL [counter=6] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=6] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=6] [L36] EXPR counter++ VAL [counter=7] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=7] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=7] [L36] EXPR counter++ VAL [counter=8] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=8] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=8] [L36] EXPR counter++ VAL [counter=9] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=9] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=9] [L36] EXPR counter++ VAL [counter=10] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=10] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=10] [L36] EXPR counter++ VAL [counter=11] [L36] COND FALSE !(counter++<10) [L16] COND TRUE !(cond) VAL [counter=11] [L18] reach_error() VAL [counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.1s, OverallIterations: 7, TraceHistogramMax: 11, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 49 SDtfs, 56 SDslu, 124 SDs, 0 SdLazy, 100 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 182 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 6701 SizeOfPredicates, 30 NumberOfNonLiveVariables, 408 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 11 InterpolantComputations, 7 PerfectInterpolantSequences, 0/160 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...