./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_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_535602e3-e2c0-4931-aac3-18cfb65301c1/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535602e3-e2c0-4931-aac3-18cfb65301c1/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_535602e3-e2c0-4931-aac3-18cfb65301c1/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535602e3-e2c0-4931-aac3-18cfb65301c1/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535602e3-e2c0-4931-aac3-18cfb65301c1/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_535602e3-e2c0-4931-aac3-18cfb65301c1/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 c22a2bf16e566e2dd78495f603a40c3d184b5b55 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:27:32,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:27:32,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:27:32,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:27:32,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:27:32,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:27:32,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:27:32,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:27:32,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:27:32,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:27:32,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:27:32,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:27:32,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:27:32,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:27:32,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:27:32,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:27:32,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:27:32,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:27:32,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:27:32,572 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:27:32,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:27:32,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:27:32,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:27:32,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:27:32,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:27:32,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:27:32,584 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:27:32,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:27:32,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:27:32,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:27:32,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:27:32,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:27:32,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:27:32,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:27:32,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:27:32,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:27:32,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:27:32,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:27:32,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:27:32,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:27:32,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:27:32,598 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535602e3-e2c0-4931-aac3-18cfb65301c1/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:27:32,624 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:27:32,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:27:32,625 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:27:32,626 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:27:32,626 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:27:32,626 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:27:32,627 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:27:32,627 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:27:32,627 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:27:32,627 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:27:32,628 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:27:32,628 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:27:32,628 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:27:32,628 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:27:32,628 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:27:32,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:27:32,629 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:27:32,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:27:32,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:27:32,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:27:32,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:27:32,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:27:32,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:27:32,631 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:27:32,631 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:27:32,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:27:32,631 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:27:32,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:27:32,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:27:32,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:27:32,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:32,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:27:32,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:27:32,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:27:32,633 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:27:32,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:27:32,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:27:32,633 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:27:32,634 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:27:32,634 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_535602e3-e2c0-4931-aac3-18cfb65301c1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535602e3-e2c0-4931-aac3-18cfb65301c1/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c22a2bf16e566e2dd78495f603a40c3d184b5b55 [2021-10-11 02:27:32,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:27:32,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:27:32,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:27:32,892 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:27:32,893 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:27:32,893 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535602e3-e2c0-4931-aac3-18cfb65301c1/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound10.c [2021-10-11 02:27:32,975 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535602e3-e2c0-4931-aac3-18cfb65301c1/bin/utaipan-WLngWcDbfI/data/42a67ef67/f857d633034d4238acba6d653d34c8a0/FLAGa8a149fc4 [2021-10-11 02:27:33,545 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:27:33,545 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535602e3-e2c0-4931-aac3-18cfb65301c1/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound10.c [2021-10-11 02:27:33,552 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535602e3-e2c0-4931-aac3-18cfb65301c1/bin/utaipan-WLngWcDbfI/data/42a67ef67/f857d633034d4238acba6d653d34c8a0/FLAGa8a149fc4 [2021-10-11 02:27:33,910 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535602e3-e2c0-4931-aac3-18cfb65301c1/bin/utaipan-WLngWcDbfI/data/42a67ef67/f857d633034d4238acba6d653d34c8a0 [2021-10-11 02:27:33,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:27:33,924 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:27:33,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:33,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:27:33,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:27:33,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:33" (1/1) ... [2021-10-11 02:27:33,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c88aeaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:33, skipping insertion in model container [2021-10-11 02:27:33,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:33" (1/1) ... [2021-10-11 02:27:33,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:27:33,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:34,159 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_535602e3-e2c0-4931-aac3-18cfb65301c1/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound10.c[490,503] [2021-10-11 02:27:34,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:34,189 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:27:34,200 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_535602e3-e2c0-4931-aac3-18cfb65301c1/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound10.c[490,503] [2021-10-11 02:27:34,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:34,225 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:27:34,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:34 WrapperNode [2021-10-11 02:27:34,226 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:34,227 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:34,227 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:27:34,228 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:27:34,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:34" (1/1) ... [2021-10-11 02:27:34,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:34" (1/1) ... [2021-10-11 02:27:34,265 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:34,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:27:34,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:27:34,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:27:34,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:34" (1/1) ... [2021-10-11 02:27:34,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:34" (1/1) ... [2021-10-11 02:27:34,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:34" (1/1) ... [2021-10-11 02:27:34,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:34" (1/1) ... [2021-10-11 02:27:34,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:34" (1/1) ... [2021-10-11 02:27:34,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:34" (1/1) ... [2021-10-11 02:27:34,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:34" (1/1) ... [2021-10-11 02:27:34,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:27:34,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:27:34,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:27:34,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:27:34,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:34" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535602e3-e2c0-4931-aac3-18cfb65301c1/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 02:27:34,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:27:34,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:27:34,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:27:34,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:27:34,801 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:27:34,801 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-10-11 02:27:34,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:34 BoogieIcfgContainer [2021-10-11 02:27:34,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:27:34,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:27:34,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:27:34,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:27:34,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:27:33" (1/3) ... [2021-10-11 02:27:34,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36ff1117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:34, skipping insertion in model container [2021-10-11 02:27:34,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:34" (2/3) ... [2021-10-11 02:27:34,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36ff1117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:34, skipping insertion in model container [2021-10-11 02:27:34,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:34" (3/3) ... [2021-10-11 02:27:34,812 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound10.c [2021-10-11 02:27:34,825 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:27:34,828 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2021-10-11 02:27:34,839 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-11 02:27:34,862 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:27:34,863 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:27:34,863 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:27:34,863 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:27:34,863 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:27:34,863 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:27:34,863 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:27:34,864 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:27:34,878 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2021-10-11 02:27:34,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:27:34,883 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:34,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:27:34,884 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:34,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:34,907 INFO L82 PathProgramCache]: Analyzing trace with hash 169560536, now seen corresponding path program 1 times [2021-10-11 02:27:34,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:34,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526629294] [2021-10-11 02:27:34,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:35,000 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:27:35,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2081726630] [2021-10-11 02:27:35,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535602e3-e2c0-4931-aac3-18cfb65301c1/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 02:27:35,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:35,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-11 02:27:35,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:35,125 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 02:27:35,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:35,131 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 02:27:35,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526629294] [2021-10-11 02:27:35,132 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:27:35,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081726630] [2021-10-11 02:27:35,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:35,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-11 02:27:35,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719958467] [2021-10-11 02:27:35,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:27:35,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:35,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:27:35,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:27:35,155 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2021-10-11 02:27:35,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:35,172 INFO L93 Difference]: Finished difference Result 65 states and 87 transitions. [2021-10-11 02:27:35,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:27:35,174 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2021-10-11 02:27:35,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:35,181 INFO L225 Difference]: With dead ends: 65 [2021-10-11 02:27:35,182 INFO L226 Difference]: Without dead ends: 31 [2021-10-11 02:27:35,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 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 02:27:35,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-11 02:27:35,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-10-11 02:27:35,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-10-11 02:27:35,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2021-10-11 02:27:35,217 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 5 [2021-10-11 02:27:35,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:35,217 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2021-10-11 02:27:35,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:27:35,218 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2021-10-11 02:27:35,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:27:35,218 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:35,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:27:35,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-11 02:27:35,445 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:35,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:35,446 INFO L82 PathProgramCache]: Analyzing trace with hash 890891193, now seen corresponding path program 1 times [2021-10-11 02:27:35,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:35,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081790980] [2021-10-11 02:27:35,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:35,453 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:27:35,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [299553449] [2021-10-11 02:27:35,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535602e3-e2c0-4931-aac3-18cfb65301c1/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 02:27:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:35,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:27:35,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:35,589 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 02:27:35,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:35,645 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 02:27:35,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081790980] [2021-10-11 02:27:35,646 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:27:35,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299553449] [2021-10-11 02:27:35,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:35,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-11 02:27:35,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993789774] [2021-10-11 02:27:35,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:27:35,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:35,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:27:35,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:27:35,651 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 6 states. [2021-10-11 02:27:35,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:35,708 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2021-10-11 02:27:35,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:27:35,711 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2021-10-11 02:27:35,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:35,712 INFO L225 Difference]: With dead ends: 51 [2021-10-11 02:27:35,714 INFO L226 Difference]: Without dead ends: 43 [2021-10-11 02:27:35,715 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 02:27:35,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-11 02:27:35,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2021-10-11 02:27:35,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-10-11 02:27:35,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2021-10-11 02:27:35,726 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 6 [2021-10-11 02:27:35,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:35,726 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2021-10-11 02:27:35,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:27:35,726 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2021-10-11 02:27:35,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:27:35,727 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:35,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:35,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:35,953 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:35,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:35,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1847641631, now seen corresponding path program 1 times [2021-10-11 02:27:35,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:35,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801278094] [2021-10-11 02:27:35,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:35,961 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:27:35,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1006070218] [2021-10-11 02:27:35,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535602e3-e2c0-4931-aac3-18cfb65301c1/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 02:27:36,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:36,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:27:36,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:36,052 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 02:27:36,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:36,063 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 02:27:36,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801278094] [2021-10-11 02:27:36,064 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:27:36,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006070218] [2021-10-11 02:27:36,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:36,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-11 02:27:36,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675273633] [2021-10-11 02:27:36,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:27:36,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:36,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:27:36,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:36,069 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 3 states. [2021-10-11 02:27:36,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:36,123 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2021-10-11 02:27:36,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:27:36,124 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2021-10-11 02:27:36,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:36,129 INFO L225 Difference]: With dead ends: 61 [2021-10-11 02:27:36,129 INFO L226 Difference]: Without dead ends: 53 [2021-10-11 02:27:36,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:27:36,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-11 02:27:36,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 34. [2021-10-11 02:27:36,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-10-11 02:27:36,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2021-10-11 02:27:36,146 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 7 [2021-10-11 02:27:36,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:36,146 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2021-10-11 02:27:36,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:27:36,146 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2021-10-11 02:27:36,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:27:36,147 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:36,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:36,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:36,348 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:36,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:36,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1442287066, now seen corresponding path program 1 times [2021-10-11 02:27:36,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:36,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617117175] [2021-10-11 02:27:36,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:36,353 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:27:36,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [834362504] [2021-10-11 02:27:36,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535602e3-e2c0-4931-aac3-18cfb65301c1/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 02:27:36,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:36,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-11 02:27:36,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:36,477 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 02:27:36,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:36,522 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 02:27:36,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617117175] [2021-10-11 02:27:36,523 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:27:36,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834362504] [2021-10-11 02:27:36,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:36,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-11 02:27:36,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498393726] [2021-10-11 02:27:36,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:27:36,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:36,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:27:36,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:27:36,527 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 7 states. [2021-10-11 02:27:36,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:36,754 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2021-10-11 02:27:36,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-11 02:27:36,755 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2021-10-11 02:27:36,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:36,756 INFO L225 Difference]: With dead ends: 76 [2021-10-11 02:27:36,756 INFO L226 Difference]: Without dead ends: 74 [2021-10-11 02:27:36,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2021-10-11 02:27:36,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-11 02:27:36,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 32. [2021-10-11 02:27:36,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-10-11 02:27:36,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-10-11 02:27:36,771 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 8 [2021-10-11 02:27:36,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:36,771 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-10-11 02:27:36,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:27:36,771 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-10-11 02:27:36,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:27:36,772 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:36,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:37,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:37,001 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:37,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:37,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1236409283, now seen corresponding path program 1 times [2021-10-11 02:27:37,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:37,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62761610] [2021-10-11 02:27:37,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:37,006 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:27:37,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1183235250] [2021-10-11 02:27:37,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535602e3-e2c0-4931-aac3-18cfb65301c1/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 02:27:37,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:37,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-11 02:27:37,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:37,117 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 02:27:37,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:37,147 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 02:27:37,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62761610] [2021-10-11 02:27:37,147 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:27:37,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183235250] [2021-10-11 02:27:37,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:37,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-11 02:27:37,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115304892] [2021-10-11 02:27:37,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:27:37,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:37,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:27:37,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:27:37,150 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 6 states. [2021-10-11 02:27:37,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:37,279 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2021-10-11 02:27:37,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:27:37,280 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2021-10-11 02:27:37,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:37,280 INFO L225 Difference]: With dead ends: 59 [2021-10-11 02:27:37,281 INFO L226 Difference]: Without dead ends: 57 [2021-10-11 02:27:37,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:27:37,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-11 02:27:37,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 42. [2021-10-11 02:27:37,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-10-11 02:27:37,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2021-10-11 02:27:37,288 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 10 [2021-10-11 02:27:37,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:37,289 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2021-10-11 02:27:37,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:27:37,289 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2021-10-11 02:27:37,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:27:37,289 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:37,290 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:37,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:37,517 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:37,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:37,517 INFO L82 PathProgramCache]: Analyzing trace with hash 971784697, now seen corresponding path program 1 times [2021-10-11 02:27:37,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:37,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259495809] [2021-10-11 02:27:37,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:37,521 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:27:37,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [715905741] [2021-10-11 02:27:37,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535602e3-e2c0-4931-aac3-18cfb65301c1/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 02:27:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:37,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:27:37,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:37,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:37,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:37,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:37,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259495809] [2021-10-11 02:27:37,658 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:27:37,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715905741] [2021-10-11 02:27:37,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:37,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-11 02:27:37,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541826067] [2021-10-11 02:27:37,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:27:37,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:37,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:27:37,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:27:37,661 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 8 states. [2021-10-11 02:27:37,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:37,729 INFO L93 Difference]: Finished difference Result 116 states and 133 transitions. [2021-10-11 02:27:37,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:27:37,730 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2021-10-11 02:27:37,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:37,733 INFO L225 Difference]: With dead ends: 116 [2021-10-11 02:27:37,734 INFO L226 Difference]: Without dead ends: 88 [2021-10-11 02:27:37,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:27:37,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-11 02:27:37,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 70. [2021-10-11 02:27:37,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-10-11 02:27:37,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 85 transitions. [2021-10-11 02:27:37,760 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 85 transitions. Word has length 12 [2021-10-11 02:27:37,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:37,764 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 85 transitions. [2021-10-11 02:27:37,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:27:37,765 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 85 transitions. [2021-10-11 02:27:37,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:27:37,765 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:37,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:37,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:37,970 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:37,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:37,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1516777280, now seen corresponding path program 1 times [2021-10-11 02:27:37,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:37,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477268951] [2021-10-11 02:27:37,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:37,974 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:27:37,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1788846226] [2021-10-11 02:27:37,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535602e3-e2c0-4931-aac3-18cfb65301c1/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:38,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-11 02:27:38,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:38,085 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 02:27:38,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:38,120 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 02:27:38,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477268951] [2021-10-11 02:27:38,120 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:27:38,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788846226] [2021-10-11 02:27:38,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:38,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-11 02:27:38,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405863650] [2021-10-11 02:27:38,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:27:38,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:38,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:27:38,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:27:38,122 INFO L87 Difference]: Start difference. First operand 70 states and 85 transitions. Second operand 6 states. [2021-10-11 02:27:38,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:38,231 INFO L93 Difference]: Finished difference Result 75 states and 88 transitions. [2021-10-11 02:27:38,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:27:38,232 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2021-10-11 02:27:38,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:38,233 INFO L225 Difference]: With dead ends: 75 [2021-10-11 02:27:38,233 INFO L226 Difference]: Without dead ends: 73 [2021-10-11 02:27:38,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:27:38,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-11 02:27:38,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2021-10-11 02:27:38,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-10-11 02:27:38,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 82 transitions. [2021-10-11 02:27:38,249 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 82 transitions. Word has length 12 [2021-10-11 02:27:38,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:38,249 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 82 transitions. [2021-10-11 02:27:38,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:27:38,249 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 82 transitions. [2021-10-11 02:27:38,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 02:27:38,249 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:38,250 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:38,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:38,472 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:38,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:38,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1629210339, now seen corresponding path program 1 times [2021-10-11 02:27:38,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:38,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551530490] [2021-10-11 02:27:38,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:38,478 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:27:38,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [922609921] [2021-10-11 02:27:38,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535602e3-e2c0-4931-aac3-18cfb65301c1/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:38,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:38,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-11 02:27:38,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:40,565 WARN L197 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 15 [2021-10-11 02:27:44,702 WARN L197 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 27 DAG size of output: 17 [2021-10-11 02:27:44,720 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 02:27:44,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:44,756 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 2, 2, 1] term [2021-10-11 02:27:44,756 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:27:44,821 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 02:27:44,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551530490] [2021-10-11 02:27:44,821 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:27:44,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922609921] [2021-10-11 02:27:44,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:44,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-11 02:27:44,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578181186] [2021-10-11 02:27:44,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 02:27:44,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:44,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 02:27:44,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:27:44,824 INFO L87 Difference]: Start difference. First operand 70 states and 82 transitions. Second operand 8 states. [2021-10-11 02:27:44,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:44,827 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2021-10-11 02:27:44,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:27:44,827 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2021-10-11 02:27:44,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:44,828 INFO L225 Difference]: With dead ends: 70 [2021-10-11 02:27:44,828 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:27:44,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:27:44,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:27:44,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:27:44,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:27:44,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:27:44,830 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-10-11 02:27:44,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:44,830 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:27:44,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 02:27:44,830 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:27:44,830 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:27:45,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-11 02:27:45,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:27:45,079 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-11 02:27:45,080 INFO L262 CegarLoopResult]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-10-11 02:27:45,080 INFO L258 CegarLoopResult]: At program point L11-2(lines 10 16) the Hoare annotation is: false [2021-10-11 02:27:45,080 INFO L262 CegarLoopResult]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2021-10-11 02:27:45,080 INFO L258 CegarLoopResult]: At program point L11-5(lines 10 16) the Hoare annotation is: false [2021-10-11 02:27:45,080 INFO L262 CegarLoopResult]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2021-10-11 02:27:45,080 INFO L258 CegarLoopResult]: At program point L11-8(lines 10 16) the Hoare annotation is: false [2021-10-11 02:27:45,080 INFO L262 CegarLoopResult]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2021-10-11 02:27:45,080 INFO L258 CegarLoopResult]: At program point L11-11(lines 51 52) the Hoare annotation is: false [2021-10-11 02:27:45,080 INFO L262 CegarLoopResult]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2021-10-11 02:27:45,080 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-11 02:27:45,081 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:27:45,081 INFO L258 CegarLoopResult]: At program point L11-14(lines 10 16) the Hoare annotation is: false [2021-10-11 02:27:45,081 INFO L262 CegarLoopResult]: For program point L11-15(lines 11 14) no Hoare annotation was computed. [2021-10-11 02:27:45,081 INFO L265 CegarLoopResult]: At program point L11-17(lines 10 16) the Hoare annotation is: true [2021-10-11 02:27:45,081 INFO L262 CegarLoopResult]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-10-11 02:27:45,081 INFO L262 CegarLoopResult]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2021-10-11 02:27:45,081 INFO L262 CegarLoopResult]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2021-10-11 02:27:45,081 INFO L262 CegarLoopResult]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2021-10-11 02:27:45,081 INFO L262 CegarLoopResult]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2021-10-11 02:27:45,081 INFO L262 CegarLoopResult]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2021-10-11 02:27:45,082 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-11 02:27:45,082 INFO L262 CegarLoopResult]: For program point L46-1(lines 46 55) no Hoare annotation was computed. [2021-10-11 02:27:45,082 INFO L258 CegarLoopResult]: At program point L46-3(lines 46 55) the Hoare annotation is: false [2021-10-11 02:27:45,082 INFO L262 CegarLoopResult]: For program point L46-4(lines 46 55) no Hoare annotation was computed. [2021-10-11 02:27:45,082 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-11 02:27:45,082 INFO L262 CegarLoopResult]: For program point L40(lines 40 67) no Hoare annotation was computed. [2021-10-11 02:27:45,082 INFO L258 CegarLoopResult]: At program point L40-2(lines 7 67) the Hoare annotation is: false [2021-10-11 02:27:45,082 INFO L262 CegarLoopResult]: For program point L40-3(lines 40 67) no Hoare annotation was computed. [2021-10-11 02:27:45,082 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-11 02:27:45,082 INFO L262 CegarLoopResult]: For program point L41(lines 41 42) no Hoare annotation was computed. [2021-10-11 02:27:45,082 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:27:45,083 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-11 02:27:45,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:27:45 BoogieIcfgContainer [2021-10-11 02:27:45,092 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:27:45,092 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:27:45,092 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:27:45,092 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:27:45,093 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:34" (3/4) ... [2021-10-11 02:27:45,096 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:27:45,106 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-10-11 02:27:45,107 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-11 02:27:45,107 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-11 02:27:45,107 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:27:45,157 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_535602e3-e2c0-4931-aac3-18cfb65301c1/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:27:45,157 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:27:45,158 INFO L168 Benchmark]: Toolchain (without parser) took 11243.37 ms. Allocated memory was 136.3 MB in the beginning and 163.6 MB in the end (delta: 27.3 MB). Free memory was 103.3 MB in the beginning and 73.0 MB in the end (delta: 30.3 MB). Peak memory consumption was 57.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:45,158 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory is still 46.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:45,159 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.93 ms. Allocated memory is still 136.3 MB. Free memory was 103.0 MB in the beginning and 111.2 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:45,159 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.73 ms. Allocated memory is still 136.3 MB. Free memory was 111.2 MB in the beginning and 109.6 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:45,160 INFO L168 Benchmark]: Boogie Preprocessor took 39.48 ms. Allocated memory is still 136.3 MB. Free memory was 109.6 MB in the beginning and 108.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:45,160 INFO L168 Benchmark]: RCFGBuilder took 497.65 ms. Allocated memory is still 136.3 MB. Free memory was 108.3 MB in the beginning and 78.8 MB in the end (delta: 29.5 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:45,161 INFO L168 Benchmark]: TraceAbstraction took 10286.62 ms. Allocated memory was 136.3 MB in the beginning and 163.6 MB in the end (delta: 27.3 MB). Free memory was 78.4 MB in the beginning and 77.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 31.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:45,161 INFO L168 Benchmark]: Witness Printer took 64.69 ms. Allocated memory is still 163.6 MB. Free memory was 77.2 MB in the beginning and 73.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:45,164 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 92.3 MB. Free memory is still 46.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 299.93 ms. Allocated memory is still 136.3 MB. Free memory was 103.0 MB in the beginning and 111.2 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.73 ms. Allocated memory is still 136.3 MB. Free memory was 111.2 MB in the beginning and 109.6 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.48 ms. Allocated memory is still 136.3 MB. Free memory was 109.6 MB in the beginning and 108.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 497.65 ms. Allocated memory is still 136.3 MB. Free memory was 108.3 MB in the beginning and 78.8 MB in the end (delta: 29.5 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10286.62 ms. Allocated memory was 136.3 MB in the beginning and 163.6 MB in the end (delta: 27.3 MB). Free memory was 78.4 MB in the beginning and 77.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 31.3 MB. Max. memory is 16.1 GB. * Witness Printer took 64.69 ms. Allocated memory is still 163.6 MB. Free memory was 77.2 MB in the beginning and 73.0 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: - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.1s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 216 SDtfs, 196 SDslu, 440 SDs, 0 SdLazy, 239 SolverSat, 64 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 101 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred 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: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 107 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 8 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 10699 SizeOfPredicates, 44 NumberOfNonLiveVariables, 713 ConjunctsInSsa, 91 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...