./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound20.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_b3919329-929a-4b64-a2b5-c9b2eb2d44aa/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b3919329-929a-4b64-a2b5-c9b2eb2d44aa/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b3919329-929a-4b64-a2b5-c9b2eb2d44aa/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b3919329-929a-4b64-a2b5-c9b2eb2d44aa/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound20.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b3919329-929a-4b64-a2b5-c9b2eb2d44aa/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b3919329-929a-4b64-a2b5-c9b2eb2d44aa/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 fe13b4d37dff944634939e96f1fb55a7d3b4c4ef .................................................................................................................................................................................................................................................................................................................. 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 07:37:58,615 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:37:58,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:37:58,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:37:58,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:37:58,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:37:58,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:37:58,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:37:58,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:37:58,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:37:58,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:37:58,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:37:58,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:37:58,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:37:58,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:37:58,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:37:58,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:37:58,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:37:58,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:37:58,744 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:37:58,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:37:58,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:37:58,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:37:58,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:37:58,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:37:58,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:37:58,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:37:58,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:37:58,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:37:58,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:37:58,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:37:58,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:37:58,769 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:37:58,771 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:37:58,772 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:37:58,772 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:37:58,773 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:37:58,773 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:37:58,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:37:58,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:37:58,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:37:58,779 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b3919329-929a-4b64-a2b5-c9b2eb2d44aa/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:37:58,806 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:37:58,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:37:58,809 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:37:58,810 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:37:58,810 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:37:58,810 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:37:58,811 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:37:58,811 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:37:58,811 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:37:58,811 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:37:58,812 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:37:58,813 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:37:58,813 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:37:58,813 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:37:58,813 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:37:58,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:37:58,815 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:37:58,815 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:37:58,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:37:58,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:37:58,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:37:58,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:37:58,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:37:58,816 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:37:58,816 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:37:58,817 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:37:58,817 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:37:58,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:37:58,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:37:58,819 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:37:58,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:37:58,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:37:58,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:37:58,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:37:58,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:37:58,821 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:37:58,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:37:58,821 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:37:58,821 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:37:58,822 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:37:58,822 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_b3919329-929a-4b64-a2b5-c9b2eb2d44aa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b3919329-929a-4b64-a2b5-c9b2eb2d44aa/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe13b4d37dff944634939e96f1fb55a7d3b4c4ef [2020-11-28 07:37:59,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:37:59,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:37:59,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:37:59,100 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:37:59,101 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:37:59,102 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b3919329-929a-4b64-a2b5-c9b2eb2d44aa/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound20.c [2020-11-28 07:37:59,173 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b3919329-929a-4b64-a2b5-c9b2eb2d44aa/bin/utaipan/data/16b04319f/8e0e224ad8a6405ea44411aecfccfc2c/FLAG24851333e [2020-11-28 07:37:59,684 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:37:59,684 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b3919329-929a-4b64-a2b5-c9b2eb2d44aa/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound20.c [2020-11-28 07:37:59,695 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b3919329-929a-4b64-a2b5-c9b2eb2d44aa/bin/utaipan/data/16b04319f/8e0e224ad8a6405ea44411aecfccfc2c/FLAG24851333e [2020-11-28 07:38:00,029 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b3919329-929a-4b64-a2b5-c9b2eb2d44aa/bin/utaipan/data/16b04319f/8e0e224ad8a6405ea44411aecfccfc2c [2020-11-28 07:38:00,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:38:00,033 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:38:00,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:38:00,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:38:00,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:38:00,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:38:00" (1/1) ... [2020-11-28 07:38:00,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aa3d450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:00, skipping insertion in model container [2020-11-28 07:38:00,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:38:00" (1/1) ... [2020-11-28 07:38:00,048 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:38:00,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:38:00,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:38:00,340 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:38:00,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:38:00,391 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:38:00,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:00 WrapperNode [2020-11-28 07:38:00,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:38:00,396 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:38:00,396 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:38:00,396 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:38:00,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:00" (1/1) ... [2020-11-28 07:38:00,411 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:00" (1/1) ... [2020-11-28 07:38:00,435 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:38:00,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:38:00,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:38:00,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:38:00,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:00" (1/1) ... [2020-11-28 07:38:00,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:00" (1/1) ... [2020-11-28 07:38:00,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:00" (1/1) ... [2020-11-28 07:38:00,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:00" (1/1) ... [2020-11-28 07:38:00,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:00" (1/1) ... [2020-11-28 07:38:00,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:00" (1/1) ... [2020-11-28 07:38:00,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:00" (1/1) ... [2020-11-28 07:38:00,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:38:00,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:38:00,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:38:00,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:38:00,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b3919329-929a-4b64-a2b5-c9b2eb2d44aa/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 07:38:00,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:38:00,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:38:00,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:38:00,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:38:00,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2020-11-28 07:38:01,128 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:38:01,129 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-11-28 07:38:01,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:01 BoogieIcfgContainer [2020-11-28 07:38:01,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:38:01,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:38:01,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:38:01,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:38:01,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:38:00" (1/3) ... [2020-11-28 07:38:01,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f79522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:38:01, skipping insertion in model container [2020-11-28 07:38:01,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:38:00" (2/3) ... [2020-11-28 07:38:01,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f79522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:38:01, skipping insertion in model container [2020-11-28 07:38:01,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:01" (3/3) ... [2020-11-28 07:38:01,143 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_valuebound20.c [2020-11-28 07:38:01,155 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:38:01,159 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 07:38:01,171 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-28 07:38:01,211 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:38:01,211 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:38:01,211 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:38:01,211 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:38:01,212 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:38:01,212 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:38:01,212 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:38:01,212 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:38:01,228 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-11-28 07:38:01,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 07:38:01,232 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:01,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 07:38:01,234 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:01,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:01,238 INFO L82 PathProgramCache]: Analyzing trace with hash 3033814, now seen corresponding path program 1 times [2020-11-28 07:38:01,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:01,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726719614] [2020-11-28 07:38:01,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:01,342 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:38:01,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [95494141] [2020-11-28 07:38:01,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b3919329-929a-4b64-a2b5-c9b2eb2d44aa/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 07:38:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:38:01,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 07:38:01,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:38:01,537 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 07:38:01,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:38:01,568 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:38:01,612 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 07:38:01,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726719614] [2020-11-28 07:38:01,613 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:38:01,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95494141] [2020-11-28 07:38:01,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:38:01,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 07:38:01,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272625911] [2020-11-28 07:38:01,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:38:01,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:38:01,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:38:01,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:38:01,634 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 5 states. [2020-11-28 07:38:03,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:38:03,893 INFO L93 Difference]: Finished difference Result 28 states and 38 transitions. [2020-11-28 07:38:03,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:38:03,895 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2020-11-28 07:38:03,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:38:03,904 INFO L225 Difference]: With dead ends: 28 [2020-11-28 07:38:03,904 INFO L226 Difference]: Without dead ends: 15 [2020-11-28 07:38:03,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:38:03,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-28 07:38:03,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 12. [2020-11-28 07:38:03,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-28 07:38:03,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-11-28 07:38:03,959 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 4 [2020-11-28 07:38:03,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:38:03,960 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-11-28 07:38:03,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:38:03,960 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-11-28 07:38:03,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:38:03,961 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:38:03,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:38:04,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-28 07:38:04,186 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:38:04,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:38:04,187 INFO L82 PathProgramCache]: Analyzing trace with hash 191893686, now seen corresponding path program 1 times [2020-11-28 07:38:04,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:38:04,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978115042] [2020-11-28 07:38:04,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:38:04,203 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:38:04,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1870716104] [2020-11-28 07:38:04,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b3919329-929a-4b64-a2b5-c9b2eb2d44aa/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 07:38:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:38:04,292 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:38:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:38:04,329 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:38:04,350 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:38:04,350 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:38:04,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:38:04,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:38:04 BoogieIcfgContainer [2020-11-28 07:38:04,579 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:38:04,580 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:38:04,580 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:38:04,580 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:38:04,581 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:38:01" (3/4) ... [2020-11-28 07:38:04,583 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:38:04,642 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b3919329-929a-4b64-a2b5-c9b2eb2d44aa/bin/utaipan/witness.graphml [2020-11-28 07:38:04,644 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:38:04,647 INFO L168 Benchmark]: Toolchain (without parser) took 4612.64 ms. Allocated memory is still 142.6 MB. Free memory was 116.0 MB in the beginning and 98.1 MB in the end (delta: 18.0 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:04,648 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 83.9 MB. Free memory is still 42.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:38:04,652 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.65 ms. Allocated memory is still 142.6 MB. Free memory was 115.7 MB in the beginning and 120.0 MB in the end (delta: -4.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:04,657 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.52 ms. Allocated memory is still 142.6 MB. Free memory was 119.6 MB in the beginning and 118.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:04,657 INFO L168 Benchmark]: Boogie Preprocessor took 46.70 ms. Allocated memory is still 142.6 MB. Free memory was 118.2 MB in the beginning and 117.4 MB in the end (delta: 797.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:38:04,658 INFO L168 Benchmark]: RCFGBuilder took 649.31 ms. Allocated memory is still 142.6 MB. Free memory was 117.4 MB in the beginning and 98.9 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:04,659 INFO L168 Benchmark]: TraceAbstraction took 3443.54 ms. Allocated memory is still 142.6 MB. Free memory was 98.5 MB in the beginning and 99.4 MB in the end (delta: -902.8 kB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:38:04,660 INFO L168 Benchmark]: Witness Printer took 65.06 ms. Allocated memory is still 142.6 MB. Free memory was 99.4 MB in the beginning and 98.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:38:04,663 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 83.9 MB. Free memory is still 42.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 358.65 ms. Allocated memory is still 142.6 MB. Free memory was 115.7 MB in the beginning and 120.0 MB in the end (delta: -4.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.52 ms. Allocated memory is still 142.6 MB. Free memory was 119.6 MB in the beginning and 118.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.70 ms. Allocated memory is still 142.6 MB. Free memory was 118.2 MB in the beginning and 117.4 MB in the end (delta: 797.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 649.31 ms. Allocated memory is still 142.6 MB. Free memory was 117.4 MB in the beginning and 98.9 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3443.54 ms. Allocated memory is still 142.6 MB. Free memory was 98.5 MB in the beginning and 99.4 MB in the end (delta: -902.8 kB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. * Witness Printer took 65.06 ms. Allocated memory is still 142.6 MB. Free memory was 99.4 MB in the beginning and 98.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 9]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L23] unsigned int z, k; [L24] long long x, y, c; [L25] z = __VERIFIER_nondet_unsigned_int() [L13] COND FALSE !(!cond) [L27] k = __VERIFIER_nondet_unsigned_int() [L13] COND FALSE !(!cond) [L30] x = 1 [L31] y = z [L32] c = 1 [L34] COND TRUE 1 [L16] COND FALSE !(!(cond)) [L37] COND TRUE !(c < k) [L46] x = x * (z - 1) [L16] COND TRUE !(cond) [L9] __assert_fail("0", "geo1-u.c", 9, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 5 SDslu, 22 SDs, 0 SdLazy, 16 SolverSat, 1 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, 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, 1 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 84 SizeOfPredicates, 5 NumberOfNonLiveVariables, 50 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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...