./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_4+newton_1_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_1_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh --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 44dec35de9ed8408896b6e9513fe1f32435d026e2fe7d21fe3b275ad7f75412d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 14:47:49,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:47:49,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:47:49,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:47:49,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:47:49,631 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:47:49,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:47:49,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:47:49,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:47:49,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:47:49,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:47:49,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:47:49,639 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:47:49,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:47:49,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:47:49,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:47:49,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:47:49,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:47:49,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:47:49,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:47:49,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:47:49,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:47:49,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:47:49,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:47:49,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:47:49,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:47:49,653 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:47:49,653 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:47:49,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:47:49,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:47:49,654 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:47:49,655 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:47:49,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:47:49,656 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:47:49,657 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:47:49,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:47:49,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:47:49,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:47:49,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:47:49,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:47:49,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:47:49,659 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 14:47:49,678 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:47:49,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:47:49,678 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:47:49,679 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:47:49,679 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:47:49,679 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:47:49,679 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:47:49,680 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:47:49,680 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:47:49,680 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:47:49,680 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:47:49,680 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:47:49,680 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:47:49,681 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:47:49,681 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:47:49,681 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:47:49,681 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:47:49,681 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:47:49,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:47:49,682 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 14:47:49,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:47:49,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 14:47:49,682 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:47:49,682 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:47:49,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:47:49,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:47:49,683 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 14:47:49,683 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:47:49,683 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:47:49,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:47:49,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:47:49,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:47:49,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:47:49,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:47:49,684 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:47:49,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:47:49,685 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:47:49,685 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:47:49,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:47:49,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:47:49,685 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:47:49,685 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44dec35de9ed8408896b6e9513fe1f32435d026e2fe7d21fe3b275ad7f75412d [2022-12-14 14:47:49,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:47:49,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:47:49,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:47:49,909 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:47:49,909 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:47:49,910 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/combinations/gcd_4+newton_1_3.i [2022-12-14 14:47:52,447 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:47:52,602 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:47:52,603 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/sv-benchmarks/c/combinations/gcd_4+newton_1_3.i [2022-12-14 14:47:52,609 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/data/b1f9c9d62/feac00782ea64037bcd9b0e828874d0f/FLAG0061dfef0 [2022-12-14 14:47:52,620 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/data/b1f9c9d62/feac00782ea64037bcd9b0e828874d0f [2022-12-14 14:47:52,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:47:52,623 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:47:52,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:47:52,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:47:52,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:47:52,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:47:52" (1/1) ... [2022-12-14 14:47:52,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@123e48c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:52, skipping insertion in model container [2022-12-14 14:47:52,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:47:52" (1/1) ... [2022-12-14 14:47:52,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:47:52,655 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:47:52,786 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/sv-benchmarks/c/combinations/gcd_4+newton_1_3.i[1224,1237] [2022-12-14 14:47:52,808 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/sv-benchmarks/c/combinations/gcd_4+newton_1_3.i[2806,2819] [2022-12-14 14:47:52,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:47:52,820 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:47:52,830 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/sv-benchmarks/c/combinations/gcd_4+newton_1_3.i[1224,1237] [2022-12-14 14:47:52,840 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/sv-benchmarks/c/combinations/gcd_4+newton_1_3.i[2806,2819] [2022-12-14 14:47:52,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:47:52,853 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:47:52,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:52 WrapperNode [2022-12-14 14:47:52,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:47:52,855 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:47:52,855 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:47:52,855 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:47:52,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:52" (1/1) ... [2022-12-14 14:47:52,867 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:52" (1/1) ... [2022-12-14 14:47:52,888 INFO L138 Inliner]: procedures = 27, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 81 [2022-12-14 14:47:52,888 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:47:52,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:47:52,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:47:52,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:47:52,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:52" (1/1) ... [2022-12-14 14:47:52,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:52" (1/1) ... [2022-12-14 14:47:52,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:52" (1/1) ... [2022-12-14 14:47:52,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:52" (1/1) ... [2022-12-14 14:47:52,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:52" (1/1) ... [2022-12-14 14:47:52,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:52" (1/1) ... [2022-12-14 14:47:52,909 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:52" (1/1) ... [2022-12-14 14:47:52,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:52" (1/1) ... [2022-12-14 14:47:52,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:47:52,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:47:52,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:47:52,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:47:52,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:52" (1/1) ... [2022-12-14 14:47:52,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:47:52,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:47:52,939 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:47:52,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:47:52,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:47:52,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 14:47:52,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:47:52,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:47:52,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 14:47:52,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 14:47:53,027 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:47:53,028 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:47:53,138 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:47:53,177 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:47:53,178 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 14:47:53,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:47:53 BoogieIcfgContainer [2022-12-14 14:47:53,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:47:53,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:47:53,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:47:53,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:47:53,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:47:52" (1/3) ... [2022-12-14 14:47:53,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b6d840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:47:53, skipping insertion in model container [2022-12-14 14:47:53,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:52" (2/3) ... [2022-12-14 14:47:53,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b6d840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:47:53, skipping insertion in model container [2022-12-14 14:47:53,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:47:53" (3/3) ... [2022-12-14 14:47:53,187 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_3.i [2022-12-14 14:47:53,202 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:47:53,202 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 14:47:53,239 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:47:53,244 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@df697a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:47:53,244 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 14:47:53,247 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 14 states have (on average 1.5) internal successors, (21), 16 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 14:47:53,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 14:47:53,252 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:47:53,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 14:47:53,253 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:47:53,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:47:53,257 INFO L85 PathProgramCache]: Analyzing trace with hash 3948908, now seen corresponding path program 1 times [2022-12-14 14:47:53,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:47:53,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391037704] [2022-12-14 14:47:53,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:47:53,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:47:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 14:47:53,340 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 14:47:53,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 14:47:53,363 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 14:47:53,365 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 14:47:53,366 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-12-14 14:47:53,367 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-12-14 14:47:53,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 14:47:53,371 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 14:47:53,374 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 14:47:53,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 02:47:53 BoogieIcfgContainer [2022-12-14 14:47:53,388 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 14:47:53,388 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 14:47:53,389 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 14:47:53,389 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 14:47:53,389 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:47:53" (3/4) ... [2022-12-14 14:47:53,392 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 14:47:53,392 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 14:47:53,393 INFO L158 Benchmark]: Toolchain (without parser) took 769.42ms. Allocated memory is still 201.3MB. Free memory was 158.4MB in the beginning and 113.7MB in the end (delta: 44.8MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2022-12-14 14:47:53,393 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 174.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:47:53,393 INFO L158 Benchmark]: CACSL2BoogieTranslator took 229.58ms. Allocated memory is still 201.3MB. Free memory was 158.4MB in the beginning and 147.2MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 14:47:53,394 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.91ms. Allocated memory is still 201.3MB. Free memory was 147.2MB in the beginning and 145.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:47:53,394 INFO L158 Benchmark]: Boogie Preprocessor took 23.11ms. Allocated memory is still 201.3MB. Free memory was 145.1MB in the beginning and 143.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 14:47:53,395 INFO L158 Benchmark]: RCFGBuilder took 266.99ms. Allocated memory is still 201.3MB. Free memory was 143.7MB in the beginning and 129.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 14:47:53,395 INFO L158 Benchmark]: TraceAbstraction took 206.18ms. Allocated memory is still 201.3MB. Free memory was 128.3MB in the beginning and 114.4MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 14:47:53,395 INFO L158 Benchmark]: Witness Printer took 3.66ms. Allocated memory is still 201.3MB. Free memory was 114.4MB in the beginning and 113.7MB in the end (delta: 714.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 14:47:53,397 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 174.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 229.58ms. Allocated memory is still 201.3MB. Free memory was 158.4MB in the beginning and 147.2MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.91ms. Allocated memory is still 201.3MB. Free memory was 147.2MB in the beginning and 145.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.11ms. Allocated memory is still 201.3MB. Free memory was 145.1MB in the beginning and 143.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 266.99ms. Allocated memory is still 201.3MB. Free memory was 143.7MB in the beginning and 129.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 206.18ms. Allocated memory is still 201.3MB. Free memory was 128.3MB in the beginning and 114.4MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 3.66ms. Allocated memory is still 201.3MB. Free memory was 114.4MB in the beginning and 113.7MB in the end (delta: 714.8kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 109]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 98, overapproximation of someBinaryDOUBLEComparisonOperation at line 108, overapproximation of someBinaryArithmeticFLOAToperation at line 87. Possible FailurePath: [L115] COND FALSE !(__VERIFIER_nondet_int()) [L118] CALL main2() [L97] float IN = __VERIFIER_nondet_float(); [L98] CALL assume_abort_if_not(IN > -0.6f && IN < 0.6f) [L82] COND FALSE !(!cond) [L98] RET assume_abort_if_not(IN > -0.6f && IN < 0.6f) [L100] CALL, EXPR f(IN) [L87] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L100] RET, EXPR f(IN) [L100] CALL, EXPR fp(IN) [L92] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L100] RET, EXPR fp(IN) [L100] float x = IN - f(IN)/fp(IN); [L108] COND TRUE !(x < 0.1) VAL [IN=109] [L109] reach_error() VAL [IN=109] - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 could not prove your program: unable to determine feasibility of some traces [2022-12-14 14:47:53,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_4+newton_1_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh --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 44dec35de9ed8408896b6e9513fe1f32435d026e2fe7d21fe3b275ad7f75412d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 14:47:55,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:47:55,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:47:55,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:47:55,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:47:55,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:47:55,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:47:55,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:47:55,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:47:55,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:47:55,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:47:55,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:47:55,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:47:55,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:47:55,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:47:55,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:47:55,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:47:55,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:47:55,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:47:55,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:47:55,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:47:55,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:47:55,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:47:55,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:47:55,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:47:55,104 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:47:55,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:47:55,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:47:55,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:47:55,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:47:55,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:47:55,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:47:55,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:47:55,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:47:55,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:47:55,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:47:55,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:47:55,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:47:55,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:47:55,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:47:55,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:47:55,113 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-12-14 14:47:55,134 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:47:55,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:47:55,135 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:47:55,135 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:47:55,136 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:47:55,136 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:47:55,136 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:47:55,136 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:47:55,136 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:47:55,137 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:47:55,137 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:47:55,137 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:47:55,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:47:55,138 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 14:47:55,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 14:47:55,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:47:55,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:47:55,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:47:55,139 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:47:55,139 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 14:47:55,139 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 14:47:55,139 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 14:47:55,139 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 14:47:55,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:47:55,139 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:47:55,140 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:47:55,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:47:55,140 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 14:47:55,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:47:55,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:47:55,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:47:55,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:47:55,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:47:55,141 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 14:47:55,141 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 14:47:55,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:47:55,141 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:47:55,142 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 14:47:55,142 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44dec35de9ed8408896b6e9513fe1f32435d026e2fe7d21fe3b275ad7f75412d [2022-12-14 14:47:55,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:47:55,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:47:55,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:47:55,369 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:47:55,369 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:47:55,370 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/combinations/gcd_4+newton_1_3.i [2022-12-14 14:47:57,809 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:47:57,961 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:47:57,961 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/sv-benchmarks/c/combinations/gcd_4+newton_1_3.i [2022-12-14 14:47:57,968 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/data/8bbcb8d3e/44abd9df13e1490c90bf9b61735427ea/FLAGb5a6f06c9 [2022-12-14 14:47:58,358 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/data/8bbcb8d3e/44abd9df13e1490c90bf9b61735427ea [2022-12-14 14:47:58,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:47:58,361 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:47:58,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:47:58,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:47:58,365 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:47:58,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:47:58" (1/1) ... [2022-12-14 14:47:58,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e72bd4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:58, skipping insertion in model container [2022-12-14 14:47:58,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:47:58" (1/1) ... [2022-12-14 14:47:58,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:47:58,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:47:58,486 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/sv-benchmarks/c/combinations/gcd_4+newton_1_3.i[1224,1237] [2022-12-14 14:47:58,503 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/sv-benchmarks/c/combinations/gcd_4+newton_1_3.i[2806,2819] [2022-12-14 14:47:58,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:47:58,514 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:47:58,524 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/sv-benchmarks/c/combinations/gcd_4+newton_1_3.i[1224,1237] [2022-12-14 14:47:58,530 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/sv-benchmarks/c/combinations/gcd_4+newton_1_3.i[2806,2819] [2022-12-14 14:47:58,531 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:47:58,542 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:47:58,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:58 WrapperNode [2022-12-14 14:47:58,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:47:58,543 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:47:58,543 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:47:58,543 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:47:58,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:58" (1/1) ... [2022-12-14 14:47:58,556 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:58" (1/1) ... [2022-12-14 14:47:58,570 INFO L138 Inliner]: procedures = 28, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 78 [2022-12-14 14:47:58,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:47:58,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:47:58,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:47:58,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:47:58,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:58" (1/1) ... [2022-12-14 14:47:58,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:58" (1/1) ... [2022-12-14 14:47:58,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:58" (1/1) ... [2022-12-14 14:47:58,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:58" (1/1) ... [2022-12-14 14:47:58,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:58" (1/1) ... [2022-12-14 14:47:58,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:58" (1/1) ... [2022-12-14 14:47:58,590 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:58" (1/1) ... [2022-12-14 14:47:58,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:58" (1/1) ... [2022-12-14 14:47:58,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:47:58,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:47:58,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:47:58,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:47:58,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:58" (1/1) ... [2022-12-14 14:47:58,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:47:58,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:47:58,618 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:47:58,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:47:58,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:47:58,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 14:47:58,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:47:58,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:47:58,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 14:47:58,655 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 14:47:58,733 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:47:58,735 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:48:05,634 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:48:05,639 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:48:05,639 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 14:48:05,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:48:05 BoogieIcfgContainer [2022-12-14 14:48:05,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:48:05,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:48:05,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:48:05,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:48:05,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:47:58" (1/3) ... [2022-12-14 14:48:05,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cfa75fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:48:05, skipping insertion in model container [2022-12-14 14:48:05,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:47:58" (2/3) ... [2022-12-14 14:48:05,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cfa75fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:48:05, skipping insertion in model container [2022-12-14 14:48:05,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:48:05" (3/3) ... [2022-12-14 14:48:05,648 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_4+newton_1_3.i [2022-12-14 14:48:05,662 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:48:05,662 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-14 14:48:05,695 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:48:05,699 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@b8e361c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:48:05,699 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-14 14:48:05,702 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 14:48:05,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 14:48:05,707 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:48:05,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:48:05,708 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:48:05,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:48:05,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1386425161, now seen corresponding path program 1 times [2022-12-14 14:48:05,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:48:05,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [685205456] [2022-12-14 14:48:05,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:48:05,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:48:05,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:48:05,723 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 14:48:05,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 14:48:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:48:06,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 14:48:06,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:48:06,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:48:06,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:48:06,833 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 14:48:06,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [685205456] [2022-12-14 14:48:06,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [685205456] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:48:06,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:48:06,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 14:48:06,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806635542] [2022-12-14 14:48:06,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:48:06,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 14:48:06,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 14:48:06,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 14:48:06,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 14:48:06,861 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 28 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:48:06,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:48:06,877 INFO L93 Difference]: Finished difference Result 57 states and 74 transitions. [2022-12-14 14:48:06,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 14:48:06,878 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 14:48:06,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:48:06,883 INFO L225 Difference]: With dead ends: 57 [2022-12-14 14:48:06,883 INFO L226 Difference]: Without dead ends: 26 [2022-12-14 14:48:06,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 14:48:06,888 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:48:06,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:48:06,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-12-14 14:48:06,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-12-14 14:48:06,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.35) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 14:48:06,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-12-14 14:48:06,913 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 9 [2022-12-14 14:48:06,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:48:06,914 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-12-14 14:48:06,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:48:06,914 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-12-14 14:48:06,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 14:48:06,914 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:48:06,914 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:48:06,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 14:48:07,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:48:07,117 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:48:07,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:48:07,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1329166859, now seen corresponding path program 1 times [2022-12-14 14:48:07,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 14:48:07,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380693177] [2022-12-14 14:48:07,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:48:07,125 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 14:48:07,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 14:48:07,130 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 14:48:07,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc791a60-a4e8-4c58-9709-1342d176854a/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process