./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_eabf80fe-5a46-470c-931c-8d0023250f99/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_eabf80fe-5a46-470c-931c-8d0023250f99/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_eabf80fe-5a46-470c-931c-8d0023250f99/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_eabf80fe-5a46-470c-931c-8d0023250f99/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_unwindbound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_eabf80fe-5a46-470c-931c-8d0023250f99/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_eabf80fe-5a46-470c-931c-8d0023250f99/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 [2020-11-30 02:21:10,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:21:10,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:21:10,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:21:10,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:21:10,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:21:10,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:21:10,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:21:10,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:21:10,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:21:10,527 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:21:10,529 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:21:10,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:21:10,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:21:10,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:21:10,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:21:10,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:21:10,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:21:10,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:21:10,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:21:10,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:21:10,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:21:10,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:21:10,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:21:10,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:21:10,562 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:21:10,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:21:10,564 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:21:10,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:21:10,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:21:10,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:21:10,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:21:10,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:21:10,573 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:21:10,575 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:21:10,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:21:10,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:21:10,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:21:10,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:21:10,580 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:21:10,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:21:10,583 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_eabf80fe-5a46-470c-931c-8d0023250f99/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:21:10,617 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:21:10,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:21:10,618 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:21:10,619 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:21:10,619 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:21:10,620 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:21:10,620 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:21:10,620 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:21:10,621 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:21:10,621 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:21:10,621 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:21:10,622 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:21:10,622 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:21:10,623 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:21:10,623 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:21:10,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:21:10,624 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:21:10,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:21:10,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:21:10,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:21:10,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:21:10,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:21:10,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:21:10,626 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:21:10,627 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:21:10,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:21:10,627 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:21:10,628 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:21:10,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:21:10,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:21:10,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:21:10,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:21:10,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:21:10,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:21:10,630 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:21:10,630 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:21:10,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:21:10,631 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:21:10,631 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:21:10,631 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:21:10,632 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_eabf80fe-5a46-470c-931c-8d0023250f99/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_eabf80fe-5a46-470c-931c-8d0023250f99/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee6f4ba937d52a63ff8049638c977b1c01237212 [2020-11-30 02:21:10,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:21:11,023 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:21:11,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:21:11,032 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:21:11,033 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:21:11,035 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_eabf80fe-5a46-470c-931c-8d0023250f99/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_unwindbound2.c [2020-11-30 02:21:11,130 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eabf80fe-5a46-470c-931c-8d0023250f99/bin/utaipan/data/d624e64f6/045f8d76838a46e2b8bc6f0a488a3d69/FLAG78e9b2b9f [2020-11-30 02:21:11,838 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:21:11,845 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_eabf80fe-5a46-470c-931c-8d0023250f99/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_unwindbound2.c [2020-11-30 02:21:11,859 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eabf80fe-5a46-470c-931c-8d0023250f99/bin/utaipan/data/d624e64f6/045f8d76838a46e2b8bc6f0a488a3d69/FLAG78e9b2b9f [2020-11-30 02:21:12,144 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_eabf80fe-5a46-470c-931c-8d0023250f99/bin/utaipan/data/d624e64f6/045f8d76838a46e2b8bc6f0a488a3d69 [2020-11-30 02:21:12,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:21:12,160 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:21:12,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:21:12,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:21:12,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:21:12,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:21:12" (1/1) ... [2020-11-30 02:21:12,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57cef662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:21:12, skipping insertion in model container [2020-11-30 02:21:12,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:21:12" (1/1) ... [2020-11-30 02:21:12,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:21:12,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:21:12,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:21:12,523 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:21:12,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:21:12,603 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:21:12,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:21:12 WrapperNode [2020-11-30 02:21:12,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:21:12,607 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:21:12,608 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:21:12,608 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:21:12,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:21:12" (1/1) ... [2020-11-30 02:21:12,639 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:21:12" (1/1) ... [2020-11-30 02:21:12,678 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:21:12,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:21:12,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:21:12,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:21:12,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:21:12" (1/1) ... [2020-11-30 02:21:12,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:21:12" (1/1) ... [2020-11-30 02:21:12,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:21:12" (1/1) ... [2020-11-30 02:21:12,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:21:12" (1/1) ... [2020-11-30 02:21:12,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:21:12" (1/1) ... [2020-11-30 02:21:12,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:21:12" (1/1) ... [2020-11-30 02:21:12,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:21:12" (1/1) ... [2020-11-30 02:21:12,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:21:12,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:21:12,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:21:12,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:21:12,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:21:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eabf80fe-5a46-470c-931c-8d0023250f99/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 [2020-11-30 02:21:12,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:21:12,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:21:12,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:21:12,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:21:13,679 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:21:13,679 INFO L298 CfgBuilder]: Removed 31 assume(true) statements. [2020-11-30 02:21:13,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:21:13 BoogieIcfgContainer [2020-11-30 02:21:13,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:21:13,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:21:13,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:21:13,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:21:13,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:21:12" (1/3) ... [2020-11-30 02:21:13,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b17f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:21:13, skipping insertion in model container [2020-11-30 02:21:13,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:21:12" (2/3) ... [2020-11-30 02:21:13,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b17f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:21:13, skipping insertion in model container [2020-11-30 02:21:13,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:21:13" (3/3) ... [2020-11-30 02:21:13,697 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll_unwindbound2.c [2020-11-30 02:21:13,722 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:21:13,727 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-11-30 02:21:13,738 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-30 02:21:13,766 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:21:13,767 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:21:13,767 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:21:13,767 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:21:13,767 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:21:13,768 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:21:13,768 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:21:13,768 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:21:13,786 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-30 02:21:13,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 02:21:13,792 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:21:13,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 02:21:13,793 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]=== [2020-11-30 02:21:13,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:21:13,800 INFO L82 PathProgramCache]: Analyzing trace with hash 165250771, now seen corresponding path program 1 times [2020-11-30 02:21:13,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:21:13,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724338199] [2020-11-30 02:21:13,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:21:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:21:13,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:21:13,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724338199] [2020-11-30 02:21:13,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:21:13,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:21:13,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84533875] [2020-11-30 02:21:13,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 02:21:13,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:21:14,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 02:21:14,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:21:14,013 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-30 02:21:14,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:21:14,038 INFO L93 Difference]: Finished difference Result 65 states and 91 transitions. [2020-11-30 02:21:14,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 02:21:14,040 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-11-30 02:21:14,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:21:14,052 INFO L225 Difference]: With dead ends: 65 [2020-11-30 02:21:14,052 INFO L226 Difference]: Without dead ends: 31 [2020-11-30 02:21:14,057 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 [2020-11-30 02:21:14,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-30 02:21:14,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-30 02:21:14,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-30 02:21:14,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-11-30 02:21:14,110 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 5 [2020-11-30 02:21:14,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:21:14,111 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-11-30 02:21:14,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 02:21:14,111 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-11-30 02:21:14,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 02:21:14,112 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:21:14,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 02:21:14,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:21:14,113 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]=== [2020-11-30 02:21:14,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:21:14,115 INFO L82 PathProgramCache]: Analyzing trace with hash 735362312, now seen corresponding path program 1 times [2020-11-30 02:21:14,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:21:14,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215595511] [2020-11-30 02:21:14,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:21:14,161 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 02:21:14,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1268334298] [2020-11-30 02:21:14,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eabf80fe-5a46-470c-931c-8d0023250f99/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 [2020-11-30 02:21:14,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:21:14,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 02:21:14,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:21:14,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:21:14,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:21:14,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:21:14,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215595511] [2020-11-30 02:21:14,411 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:21:14,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268334298] [2020-11-30 02:21:14,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:21:14,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-30 02:21:14,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582581024] [2020-11-30 02:21:14,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:21:14,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:21:14,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:21:14,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:21:14,420 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 6 states. [2020-11-30 02:21:14,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:21:14,520 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2020-11-30 02:21:14,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:21:14,521 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2020-11-30 02:21:14,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:21:14,525 INFO L225 Difference]: With dead ends: 43 [2020-11-30 02:21:14,526 INFO L226 Difference]: Without dead ends: 39 [2020-11-30 02:21:14,529 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 [2020-11-30 02:21:14,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-30 02:21:14,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2020-11-30 02:21:14,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-30 02:21:14,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2020-11-30 02:21:14,546 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 6 [2020-11-30 02:21:14,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:21:14,549 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2020-11-30 02:21:14,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:21:14,553 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2020-11-30 02:21:14,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 02:21:14,554 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:21:14,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:21:14,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-30 02:21:14,768 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]=== [2020-11-30 02:21:14,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:21:14,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1320528433, now seen corresponding path program 1 times [2020-11-30 02:21:14,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:21:14,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573654730] [2020-11-30 02:21:14,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:21:14,808 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 02:21:14,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [744662815] [2020-11-30 02:21:14,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eabf80fe-5a46-470c-931c-8d0023250f99/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 [2020-11-30 02:21:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:21:14,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 02:21:14,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:21:15,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:21:15,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:21:15,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:21:15,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573654730] [2020-11-30 02:21:15,040 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:21:15,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744662815] [2020-11-30 02:21:15,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:21:15,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 02:21:15,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402833891] [2020-11-30 02:21:15,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:21:15,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:21:15,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:21:15,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:21:15,042 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand 3 states. [2020-11-30 02:21:15,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:21:15,153 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2020-11-30 02:21:15,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:21:15,155 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-11-30 02:21:15,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:21:15,157 INFO L225 Difference]: With dead ends: 61 [2020-11-30 02:21:15,157 INFO L226 Difference]: Without dead ends: 57 [2020-11-30 02:21:15,158 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 [2020-11-30 02:21:15,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-30 02:21:15,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 34. [2020-11-30 02:21:15,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-30 02:21:15,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2020-11-30 02:21:15,175 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 7 [2020-11-30 02:21:15,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:21:15,176 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2020-11-30 02:21:15,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:21:15,176 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2020-11-30 02:21:15,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 02:21:15,177 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:21:15,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:21:15,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:21:15,392 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]=== [2020-11-30 02:21:15,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:21:15,393 INFO L82 PathProgramCache]: Analyzing trace with hash 780891877, now seen corresponding path program 1 times [2020-11-30 02:21:15,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:21:15,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127833088] [2020-11-30 02:21:15,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:21:15,418 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 02:21:15,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [538143562] [2020-11-30 02:21:15,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eabf80fe-5a46-470c-931c-8d0023250f99/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 [2020-11-30 02:21:15,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:21:15,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 02:21:15,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:21:15,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:21:15,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:21:15,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:21:15,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127833088] [2020-11-30 02:21:15,682 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:21:15,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538143562] [2020-11-30 02:21:15,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:21:15,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-30 02:21:15,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008711187] [2020-11-30 02:21:15,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:21:15,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:21:15,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:21:15,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:21:15,697 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 6 states. [2020-11-30 02:21:15,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:21:15,818 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2020-11-30 02:21:15,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:21:15,819 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-30 02:21:15,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:21:15,820 INFO L225 Difference]: With dead ends: 49 [2020-11-30 02:21:15,820 INFO L226 Difference]: Without dead ends: 19 [2020-11-30 02:21:15,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:21:15,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-30 02:21:15,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-11-30 02:21:15,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-30 02:21:15,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2020-11-30 02:21:15,825 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 11 [2020-11-30 02:21:15,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:21:15,826 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-11-30 02:21:15,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:21:15,826 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2020-11-30 02:21:15,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 02:21:15,827 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:21:15,827 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:21:16,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:21:16,043 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]=== [2020-11-30 02:21:16,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:21:16,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1361720655, now seen corresponding path program 1 times [2020-11-30 02:21:16,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:21:16,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904423694] [2020-11-30 02:21:16,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:21:16,071 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 02:21:16,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [824765119] [2020-11-30 02:21:16,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eabf80fe-5a46-470c-931c-8d0023250f99/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 [2020-11-30 02:21:16,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:21:16,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 02:21:16,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:21:16,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:21:16,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:21:16,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:21:16,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904423694] [2020-11-30 02:21:16,240 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:21:16,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824765119] [2020-11-30 02:21:16,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:21:16,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-30 02:21:16,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007843921] [2020-11-30 02:21:16,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 02:21:16,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:21:16,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 02:21:16,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 02:21:16,243 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand 5 states. [2020-11-30 02:21:16,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:21:16,317 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2020-11-30 02:21:16,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:21:16,319 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-30 02:21:16,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:21:16,319 INFO L225 Difference]: With dead ends: 34 [2020-11-30 02:21:16,319 INFO L226 Difference]: Without dead ends: 20 [2020-11-30 02:21:16,320 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 [2020-11-30 02:21:16,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-30 02:21:16,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-30 02:21:16,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-30 02:21:16,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-11-30 02:21:16,325 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2020-11-30 02:21:16,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:21:16,325 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-11-30 02:21:16,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 02:21:16,325 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-11-30 02:21:16,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 02:21:16,326 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:21:16,326 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:21:16,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:21:16,527 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]=== [2020-11-30 02:21:16,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:21:16,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1129600833, now seen corresponding path program 1 times [2020-11-30 02:21:16,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:21:16,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992584038] [2020-11-30 02:21:16,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:21:16,549 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 02:21:16,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [286676990] [2020-11-30 02:21:16,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eabf80fe-5a46-470c-931c-8d0023250f99/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 [2020-11-30 02:21:16,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:21:16,642 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:21:16,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:21:16,666 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:21:16,712 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 02:21:16,713 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 02:21:16,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-30 02:21:16,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:21:16 BoogieIcfgContainer [2020-11-30 02:21:16,979 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:21:16,980 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:21:16,980 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:21:16,980 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:21:16,981 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:21:13" (3/4) ... [2020-11-30 02:21:16,982 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 02:21:17,048 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_eabf80fe-5a46-470c-931c-8d0023250f99/bin/utaipan/witness.graphml [2020-11-30 02:21:17,048 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:21:17,051 INFO L168 Benchmark]: Toolchain (without parser) took 4889.68 ms. Allocated memory was 104.9 MB in the beginning and 138.4 MB in the end (delta: 33.6 MB). Free memory was 75.8 MB in the beginning and 54.3 MB in the end (delta: 21.5 MB). Peak memory consumption was 56.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:21:17,051 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 104.9 MB. Free memory is still 63.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:21:17,052 INFO L168 Benchmark]: CACSL2BoogieTranslator took 444.09 ms. Allocated memory is still 104.9 MB. Free memory was 75.5 MB in the beginning and 80.1 MB in the end (delta: -4.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:21:17,053 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.69 ms. Allocated memory is still 104.9 MB. Free memory was 80.1 MB in the beginning and 78.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:21:17,054 INFO L168 Benchmark]: Boogie Preprocessor took 57.00 ms. Allocated memory is still 104.9 MB. Free memory was 78.5 MB in the beginning and 77.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:21:17,055 INFO L168 Benchmark]: RCFGBuilder took 943.85 ms. Allocated memory was 104.9 MB in the beginning and 138.4 MB in the end (delta: 33.6 MB). Free memory was 77.1 MB in the beginning and 114.7 MB in the end (delta: -37.6 MB). Peak memory consumption was 26.9 MB. Max. memory is 16.1 GB. [2020-11-30 02:21:17,056 INFO L168 Benchmark]: TraceAbstraction took 3295.11 ms. Allocated memory is still 138.4 MB. Free memory was 114.3 MB in the beginning and 56.4 MB in the end (delta: 57.9 MB). Peak memory consumption was 56.0 MB. Max. memory is 16.1 GB. [2020-11-30 02:21:17,056 INFO L168 Benchmark]: Witness Printer took 69.01 ms. Allocated memory is still 138.4 MB. Free memory was 56.4 MB in the beginning and 54.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:21:17,061 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 104.9 MB. Free memory is still 63.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 444.09 ms. Allocated memory is still 104.9 MB. Free memory was 75.5 MB in the beginning and 80.1 MB in the end (delta: -4.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.69 ms. Allocated memory is still 104.9 MB. Free memory was 80.1 MB in the beginning and 78.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.00 ms. Allocated memory is still 104.9 MB. Free memory was 78.5 MB in the beginning and 77.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 943.85 ms. Allocated memory was 104.9 MB in the beginning and 138.4 MB in the end (delta: 33.6 MB). Free memory was 77.1 MB in the beginning and 114.7 MB in the end (delta: -37.6 MB). Peak memory consumption was 26.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3295.11 ms. Allocated memory is still 138.4 MB. Free memory was 114.3 MB in the beginning and 56.4 MB in the end (delta: 57.9 MB). Peak memory consumption was 56.0 MB. Max. memory is 16.1 GB. * Witness Printer took 69.01 ms. Allocated memory is still 138.4 MB. Free memory was 56.4 MB in the beginning and 54.3 MB in the end (delta: 2.0 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: 3.1s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 0.4s, 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, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s 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, 0.6s 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...