./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1e936c72-6f1d-499a-94d6-58a485534fd6/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1e936c72-6f1d-499a-94d6-58a485534fd6/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1e936c72-6f1d-499a-94d6-58a485534fd6/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1e936c72-6f1d-499a-94d6-58a485534fd6/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_unwindbound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1e936c72-6f1d-499a-94d6-58a485534fd6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1e936c72-6f1d-499a-94d6-58a485534fd6/bin/utaipan --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 ee6f4ba937d52a63ff8049638c977b1c01237212 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-a4ecdab [2020-11-28 07:39:55,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:39:55,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:39:55,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:39:55,277 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:39:55,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:39:55,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:39:55,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:39:55,299 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:39:55,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:39:55,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:39:55,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:39:55,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:39:55,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:39:55,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:39:55,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:39:55,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:39:55,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:39:55,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:39:55,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:39:55,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:39:55,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:39:55,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:39:55,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:39:55,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:39:55,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:39:55,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:39:55,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:39:55,365 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:39:55,366 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:39:55,367 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:39:55,368 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:39:55,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:39:55,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:39:55,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:39:55,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:39:55,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:39:55,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:39:55,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:39:55,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:39:55,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:39:55,382 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1e936c72-6f1d-499a-94d6-58a485534fd6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:39:55,415 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:39:55,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:39:55,416 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:39:55,417 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:39:55,417 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:39:55,417 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:39:55,417 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:39:55,418 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:39:55,418 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:39:55,418 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:39:55,418 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:39:55,418 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:39:55,419 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:39:55,419 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:39:55,419 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:39:55,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:39:55,420 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:39:55,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:39:55,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:39:55,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:39:55,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:39:55,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:39:55,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:39:55,422 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:39:55,422 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:39:55,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:39:55,423 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:39:55,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:39:55,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:39:55,424 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:39:55,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:39:55,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:39:55,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:39:55,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:39:55,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:39:55,425 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:39:55,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:39:55,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:39:55,426 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:39:55,426 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:39:55,426 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-vcloud-master/worker/run_dir_1e936c72-6f1d-499a-94d6-58a485534fd6/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1e936c72-6f1d-499a-94d6-58a485534fd6/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee6f4ba937d52a63ff8049638c977b1c01237212 [2020-11-28 07:39:55,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:39:55,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:39:55,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:39:55,733 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:39:55,734 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:39:55,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1e936c72-6f1d-499a-94d6-58a485534fd6/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_unwindbound2.c [2020-11-28 07:39:55,821 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1e936c72-6f1d-499a-94d6-58a485534fd6/bin/utaipan/data/83c447595/5cd20965fe2b4cb99064589dc04ae8de/FLAG720789ef8 [2020-11-28 07:39:56,332 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:39:56,339 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1e936c72-6f1d-499a-94d6-58a485534fd6/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_unwindbound2.c [2020-11-28 07:39:56,350 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1e936c72-6f1d-499a-94d6-58a485534fd6/bin/utaipan/data/83c447595/5cd20965fe2b4cb99064589dc04ae8de/FLAG720789ef8 [2020-11-28 07:39:56,681 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1e936c72-6f1d-499a-94d6-58a485534fd6/bin/utaipan/data/83c447595/5cd20965fe2b4cb99064589dc04ae8de [2020-11-28 07:39:56,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:39:56,685 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:39:56,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:39:56,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:39:56,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:39:56,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:39:56" (1/1) ... [2020-11-28 07:39:56,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13719081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:56, skipping insertion in model container [2020-11-28 07:39:56,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:39:56" (1/1) ... [2020-11-28 07:39:56,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:39:56,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:39:56,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:39:56,989 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:39:57,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:39:57,053 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:39:57,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:57 WrapperNode [2020-11-28 07:39:57,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:39:57,055 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:39:57,055 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:39:57,055 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:39:57,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:57" (1/1) ... [2020-11-28 07:39:57,072 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:57" (1/1) ... [2020-11-28 07:39:57,095 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:39:57,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:39:57,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:39:57,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:39:57,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:57" (1/1) ... [2020-11-28 07:39:57,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:57" (1/1) ... [2020-11-28 07:39:57,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:57" (1/1) ... [2020-11-28 07:39:57,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:57" (1/1) ... [2020-11-28 07:39:57,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:57" (1/1) ... [2020-11-28 07:39:57,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:57" (1/1) ... [2020-11-28 07:39:57,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:57" (1/1) ... [2020-11-28 07:39:57,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:39:57,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:39:57,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:39:57,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:39:57,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1e936c72-6f1d-499a-94d6-58a485534fd6/bin/utaipan/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 [2020-11-28 07:39:57,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:39:57,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:39:57,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:39:57,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:39:57,777 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:39:57,777 INFO L298 CfgBuilder]: Removed 31 assume(true) statements. [2020-11-28 07:39:57,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:39:57 BoogieIcfgContainer [2020-11-28 07:39:57,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:39:57,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:39:57,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:39:57,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:39:57,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:39:56" (1/3) ... [2020-11-28 07:39:57,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59c7932d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:39:57, skipping insertion in model container [2020-11-28 07:39:57,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:57" (2/3) ... [2020-11-28 07:39:57,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59c7932d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:39:57, skipping insertion in model container [2020-11-28 07:39:57,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:39:57" (3/3) ... [2020-11-28 07:39:57,793 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll_unwindbound2.c [2020-11-28 07:39:57,805 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:39:57,811 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-11-28 07:39:57,825 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-28 07:39:57,853 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:39:57,853 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:39:57,853 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:39:57,853 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:39:57,854 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:39:57,854 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:39:57,854 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:39:57,854 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:39:57,869 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-28 07:39:57,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:39:57,875 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:57,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:39:57,876 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:39:57,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:57,883 INFO L82 PathProgramCache]: Analyzing trace with hash 165250771, now seen corresponding path program 1 times [2020-11-28 07:39:57,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:39:57,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633189863] [2020-11-28 07:39:57,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:39:58,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:58,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:58,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633189863] [2020-11-28 07:39:58,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:39:58,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:39:58,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010780094] [2020-11-28 07:39:58,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:39:58,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:39:58,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:39:58,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:39:58,082 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-28 07:39:58,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:39:58,109 INFO L93 Difference]: Finished difference Result 65 states and 91 transitions. [2020-11-28 07:39:58,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:39:58,111 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-11-28 07:39:58,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:39:58,133 INFO L225 Difference]: With dead ends: 65 [2020-11-28 07:39:58,133 INFO L226 Difference]: Without dead ends: 31 [2020-11-28 07:39:58,139 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 [2020-11-28 07:39:58,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-28 07:39:58,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-28 07:39:58,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 07:39:58,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-11-28 07:39:58,180 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 5 [2020-11-28 07:39:58,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:39:58,180 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-11-28 07:39:58,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:39:58,180 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-11-28 07:39:58,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:39:58,181 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:58,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:39:58,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:39:58,182 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:39:58,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:58,182 INFO L82 PathProgramCache]: Analyzing trace with hash 735362312, now seen corresponding path program 1 times [2020-11-28 07:39:58,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:39:58,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319596974] [2020-11-28 07:39:58,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:39:58,205 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:39:58,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2097141817] [2020-11-28 07:39:58,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1e936c72-6f1d-499a-94d6-58a485534fd6/bin/utaipan/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 [2020-11-28 07:39:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:58,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:39:58,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:39:58,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:58,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:39:58,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:58,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319596974] [2020-11-28 07:39:58,449 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:39:58,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097141817] [2020-11-28 07:39:58,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:39:58,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-28 07:39:58,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041576177] [2020-11-28 07:39:58,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:39:58,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:39:58,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:39:58,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:39:58,454 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 6 states. [2020-11-28 07:39:58,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:39:58,513 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2020-11-28 07:39:58,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:39:58,514 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2020-11-28 07:39:58,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:39:58,515 INFO L225 Difference]: With dead ends: 43 [2020-11-28 07:39:58,516 INFO L226 Difference]: Without dead ends: 39 [2020-11-28 07:39:58,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:39:58,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-28 07:39:58,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2020-11-28 07:39:58,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-28 07:39:58,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-11-28 07:39:58,528 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 6 [2020-11-28 07:39:58,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:39:58,529 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-11-28 07:39:58,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:39:58,529 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-11-28 07:39:58,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:39:58,530 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:58,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:39:58,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 07:39:58,760 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:39:58,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:58,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1320528433, now seen corresponding path program 1 times [2020-11-28 07:39:58,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:39:58,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701472012] [2020-11-28 07:39:58,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:39:58,788 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:39:58,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [202844682] [2020-11-28 07:39:58,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1e936c72-6f1d-499a-94d6-58a485534fd6/bin/utaipan/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 [2020-11-28 07:39:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:58,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 07:39:58,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:39:58,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:58,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:39:58,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:58,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701472012] [2020-11-28 07:39:58,885 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:39:58,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202844682] [2020-11-28 07:39:58,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:39:58,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 07:39:58,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811877394] [2020-11-28 07:39:58,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:39:58,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:39:58,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:39:58,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:39:58,887 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 3 states. [2020-11-28 07:39:58,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:39:58,947 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2020-11-28 07:39:58,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:39:58,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-11-28 07:39:58,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:39:58,950 INFO L225 Difference]: With dead ends: 61 [2020-11-28 07:39:58,950 INFO L226 Difference]: Without dead ends: 57 [2020-11-28 07:39:58,950 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 [2020-11-28 07:39:58,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-28 07:39:58,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 34. [2020-11-28 07:39:58,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-28 07:39:58,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2020-11-28 07:39:58,961 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 7 [2020-11-28 07:39:58,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:39:58,961 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2020-11-28 07:39:58,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:39:58,961 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2020-11-28 07:39:58,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:39:58,962 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:58,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:39:59,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:39:59,180 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:39:59,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:59,180 INFO L82 PathProgramCache]: Analyzing trace with hash 780891877, now seen corresponding path program 1 times [2020-11-28 07:39:59,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:39:59,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672522864] [2020-11-28 07:39:59,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:39:59,202 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:39:59,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2051288158] [2020-11-28 07:39:59,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1e936c72-6f1d-499a-94d6-58a485534fd6/bin/utaipan/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 [2020-11-28 07:39:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:59,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 07:39:59,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:39:59,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:59,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:39:59,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:59,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672522864] [2020-11-28 07:39:59,411 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:39:59,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051288158] [2020-11-28 07:39:59,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:39:59,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-28 07:39:59,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885238509] [2020-11-28 07:39:59,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:39:59,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:39:59,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:39:59,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:39:59,413 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 6 states. [2020-11-28 07:39:59,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:39:59,463 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2020-11-28 07:39:59,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:39:59,467 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-28 07:39:59,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:39:59,468 INFO L225 Difference]: With dead ends: 49 [2020-11-28 07:39:59,468 INFO L226 Difference]: Without dead ends: 19 [2020-11-28 07:39:59,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:39:59,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-28 07:39:59,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-11-28 07:39:59,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 07:39:59,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2020-11-28 07:39:59,478 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 11 [2020-11-28 07:39:59,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:39:59,479 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-11-28 07:39:59,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:39:59,479 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2020-11-28 07:39:59,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:39:59,481 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:59,482 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:39:59,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:39:59,683 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:39:59,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:59,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1361720655, now seen corresponding path program 1 times [2020-11-28 07:39:59,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:39:59,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268514423] [2020-11-28 07:39:59,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:39:59,707 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:39:59,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1507117923] [2020-11-28 07:39:59,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1e936c72-6f1d-499a-94d6-58a485534fd6/bin/utaipan/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 [2020-11-28 07:39:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:59,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 07:39:59,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:39:59,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:59,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:39:59,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:59,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268514423] [2020-11-28 07:39:59,863 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:39:59,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507117923] [2020-11-28 07:39:59,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:39:59,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-28 07:39:59,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617405522] [2020-11-28 07:39:59,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:39:59,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:39:59,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:39:59,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:39:59,869 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand 5 states. [2020-11-28 07:39:59,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:39:59,909 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2020-11-28 07:39:59,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:39:59,910 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-28 07:39:59,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:39:59,910 INFO L225 Difference]: With dead ends: 34 [2020-11-28 07:39:59,910 INFO L226 Difference]: Without dead ends: 20 [2020-11-28 07:39:59,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:39:59,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-28 07:39:59,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-28 07:39:59,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-28 07:39:59,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-11-28 07:39:59,915 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2020-11-28 07:39:59,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:39:59,916 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-11-28 07:39:59,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:39:59,916 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-11-28 07:39:59,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:39:59,917 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:59,917 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:40:00,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:40:00,118 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:40:00,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:40:00,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1129600833, now seen corresponding path program 1 times [2020-11-28 07:40:00,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:40:00,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976380255] [2020-11-28 07:40:00,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:40:00,131 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:40:00,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1273347932] [2020-11-28 07:40:00,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1e936c72-6f1d-499a-94d6-58a485534fd6/bin/utaipan/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 [2020-11-28 07:40:00,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:40:00,195 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:40:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:40:00,214 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:40:00,242 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:40:00,243 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:40:00,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-28 07:40:00,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:40:00 BoogieIcfgContainer [2020-11-28 07:40:00,505 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:40:00,505 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:40:00,505 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:40:00,506 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:40:00,506 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:39:57" (3/4) ... [2020-11-28 07:40:00,508 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:40:00,563 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1e936c72-6f1d-499a-94d6-58a485534fd6/bin/utaipan/witness.graphml [2020-11-28 07:40:00,563 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:40:00,565 INFO L168 Benchmark]: Toolchain (without parser) took 3878.66 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 56.4 MB in the beginning and 57.7 MB in the end (delta: -1.3 MB). Peak memory consumption was 19.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:00,566 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 86.0 MB. Free memory is still 40.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:00,567 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.98 ms. Allocated memory is still 86.0 MB. Free memory was 56.2 MB in the beginning and 61.7 MB in the end (delta: -5.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:00,567 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.50 ms. Allocated memory is still 86.0 MB. Free memory was 61.7 MB in the beginning and 59.9 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:00,568 INFO L168 Benchmark]: Boogie Preprocessor took 49.47 ms. Allocated memory is still 86.0 MB. Free memory was 59.9 MB in the beginning and 58.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:40:00,569 INFO L168 Benchmark]: RCFGBuilder took 633.88 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 58.5 MB in the beginning and 81.1 MB in the end (delta: -22.6 MB). Peak memory consumption was 27.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:00,570 INFO L168 Benchmark]: TraceAbstraction took 2723.34 ms. Allocated memory is still 107.0 MB. Free memory was 80.5 MB in the beginning and 59.8 MB in the end (delta: 20.7 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:00,571 INFO L168 Benchmark]: Witness Printer took 57.93 ms. Allocated memory is still 107.0 MB. Free memory was 59.8 MB in the beginning and 57.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:40:00,575 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 86.0 MB. Free memory is still 40.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 357.98 ms. Allocated memory is still 86.0 MB. Free memory was 56.2 MB in the beginning and 61.7 MB in the end (delta: -5.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.50 ms. Allocated memory is still 86.0 MB. Free memory was 61.7 MB in the beginning and 59.9 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.47 ms. Allocated memory is still 86.0 MB. Free memory was 59.9 MB in the beginning and 58.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 633.88 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 58.5 MB in the beginning and 81.1 MB in the end (delta: -22.6 MB). Peak memory consumption was 27.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2723.34 ms. Allocated memory is still 107.0 MB. Free memory was 80.5 MB in the beginning and 59.8 MB in the end (delta: 20.7 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. * Witness Printer took 57.93 ms. Allocated memory is still 107.0 MB. Free memory was 59.8 MB in the beginning and 57.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L18] int counter = 0; [L20] int x, y; [L21] long long a, b, p, q, r, s; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) [L8] COND FALSE !(!cond) [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 VAL [counter=0] [L34] EXPR counter++ VAL [counter=1] [L34] COND TRUE counter++<2 [L35] COND FALSE !(!(b != 0)) [L37] long long c, k; [L38] c = a [L39] k = 0 VAL [counter=1] [L41] EXPR counter++ VAL [counter=2] [L41] COND TRUE counter++<2 [L42] COND TRUE !(c >= b) VAL [counter=2] [L63] a = b [L64] b = c [L65] long long temp; [L66] temp = p [L67] p = q [L68] q = temp - q * k [L69] temp = r [L70] r = s [L71] s = temp - s * k VAL [counter=2] [L34] EXPR counter++ VAL [counter=3] [L34] COND FALSE !(counter++<2) [L11] COND TRUE !(cond) VAL [counter=3] [L4] __assert_fail("0", "egcd3-ll.c", 4, "reach_error") VAL [counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.6s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 131 SDtfs, 67 SDslu, 182 SDs, 0 SdLazy, 63 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=3, 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, 5 MinimizatonAttempts, 30 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 1232 SizeOfPredicates, 7 NumberOfNonLiveVariables, 319 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 incorrect! Received shutdown request...