./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_2+newton_1_6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_1_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9 --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 bad8530dca87d639d49a604251c8b439dfbb73c75b0c2bc923bd7483617ddb0d --- 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-6b4ec56 [2022-11-20 20:51:57,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:51:57,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:51:57,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:51:57,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:51:57,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:51:57,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:51:57,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:51:57,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:51:57,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:51:57,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:51:57,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:51:57,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:51:57,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:51:57,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:51:57,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:51:57,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:51:57,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:51:57,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:51:57,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:51:57,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:51:57,728 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:51:57,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:51:57,732 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:51:57,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:51:57,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:51:57,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:51:57,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:51:57,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:51:57,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:51:57,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:51:57,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:51:57,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:51:57,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:51:57,751 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:51:57,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:51:57,752 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:51:57,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:51:57,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:51:57,753 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:51:57,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:51:57,755 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:51:57,790 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:51:57,790 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:51:57,791 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:51:57,791 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:51:57,792 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:51:57,792 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:51:57,792 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:51:57,792 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:51:57,793 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:51:57,793 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:51:57,793 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:51:57,793 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:51:57,794 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:51:57,794 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:51:57,794 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:51:57,794 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:51:57,795 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:51:57,795 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:51:57,796 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:51:57,796 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:51:57,796 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:51:57,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:51:57,797 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:51:57,797 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:51:57,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:51:57,797 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:51:57,798 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:51:57,798 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:51:57,798 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:51:57,798 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:51:57,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:51:57,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:51:57,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:51:57,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:51:57,800 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:51:57,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:51:57,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:51:57,800 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:51:57,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:51:57,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:51:57,801 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:51:57,801 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_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bad8530dca87d639d49a604251c8b439dfbb73c75b0c2bc923bd7483617ddb0d [2022-11-20 20:51:58,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:51:58,115 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:51:58,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:51:58,120 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:51:58,121 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:51:58,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/combinations/gcd_2+newton_1_6.i [2022-11-20 20:52:01,240 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:52:01,426 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:52:01,427 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/sv-benchmarks/c/combinations/gcd_2+newton_1_6.i [2022-11-20 20:52:01,436 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/data/eb33c98fc/e9e45c84bbb34ee78afa81451a8a562b/FLAG44ae83421 [2022-11-20 20:52:01,457 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/data/eb33c98fc/e9e45c84bbb34ee78afa81451a8a562b [2022-11-20 20:52:01,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:52:01,461 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:52:01,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:52:01,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:52:01,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:52:01,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:52:01" (1/1) ... [2022-11-20 20:52:01,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43229faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:52:01, skipping insertion in model container [2022-11-20 20:52:01,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:52:01" (1/1) ... [2022-11-20 20:52:01,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:52:01,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:52:01,686 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_8231e16b-a104-485c-8d61-52debde042d1/sv-benchmarks/c/combinations/gcd_2+newton_1_6.i[1226,1239] [2022-11-20 20:52:01,731 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_8231e16b-a104-485c-8d61-52debde042d1/sv-benchmarks/c/combinations/gcd_2+newton_1_6.i[2820,2833] [2022-11-20 20:52:01,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:52:01,746 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:52:01,765 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_8231e16b-a104-485c-8d61-52debde042d1/sv-benchmarks/c/combinations/gcd_2+newton_1_6.i[1226,1239] [2022-11-20 20:52:01,792 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_8231e16b-a104-485c-8d61-52debde042d1/sv-benchmarks/c/combinations/gcd_2+newton_1_6.i[2820,2833] [2022-11-20 20:52:01,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:52:01,812 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:52:01,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:52:01 WrapperNode [2022-11-20 20:52:01,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:52:01,815 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:52:01,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:52:01,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:52:01,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:52:01" (1/1) ... [2022-11-20 20:52:01,844 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:52:01" (1/1) ... [2022-11-20 20:52:01,879 INFO L138 Inliner]: procedures = 27, calls = 22, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 86 [2022-11-20 20:52:01,879 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:52:01,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:52:01,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:52:01,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:52:01,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:52:01" (1/1) ... [2022-11-20 20:52:01,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:52:01" (1/1) ... [2022-11-20 20:52:01,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:52:01" (1/1) ... [2022-11-20 20:52:01,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:52:01" (1/1) ... [2022-11-20 20:52:01,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:52:01" (1/1) ... [2022-11-20 20:52:01,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:52:01" (1/1) ... [2022-11-20 20:52:01,924 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:52:01" (1/1) ... [2022-11-20 20:52:01,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:52:01" (1/1) ... [2022-11-20 20:52:01,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:52:01,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:52:01,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:52:01,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:52:01,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:52:01" (1/1) ... [2022-11-20 20:52:01,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:52:01,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:52:01,977 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:52:01,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:52:02,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:52:02,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:52:02,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:52:02,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:52:02,090 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:52:02,092 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:52:02,260 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:52:02,350 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:52:02,355 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 20:52:02,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:52:02 BoogieIcfgContainer [2022-11-20 20:52:02,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:52:02,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:52:02,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:52:02,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:52:02,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:52:01" (1/3) ... [2022-11-20 20:52:02,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@258ca546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:52:02, skipping insertion in model container [2022-11-20 20:52:02,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:52:01" (2/3) ... [2022-11-20 20:52:02,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@258ca546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:52:02, skipping insertion in model container [2022-11-20 20:52:02,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:52:02" (3/3) ... [2022-11-20 20:52:02,369 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_1_6.i [2022-11-20 20:52:02,403 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:52:02,404 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 20:52:02,469 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:52:02,476 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;@454eb7cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:52:02,476 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 20:52:02,480 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 14 states have internal predecessors, (19), 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) [2022-11-20 20:52:02,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 20:52:02,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:52:02,487 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 20:52:02,488 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:52:02,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:52:02,494 INFO L85 PathProgramCache]: Analyzing trace with hash 3484809, now seen corresponding path program 1 times [2022-11-20 20:52:02,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:52:02,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543863952] [2022-11-20 20:52:02,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:52:02,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:52:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 20:52:02,655 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 20:52:02,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 20:52:02,691 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-20 20:52:02,693 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 20:52:02,695 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-20 20:52:02,702 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-20 20:52:02,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:52:02,711 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-20 20:52:02,716 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 20:52:02,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:52:02 BoogieIcfgContainer [2022-11-20 20:52:02,748 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 20:52:02,754 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 20:52:02,754 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 20:52:02,754 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 20:52:02,755 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:52:02" (3/4) ... [2022-11-20 20:52:02,762 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 20:52:02,762 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 20:52:02,764 INFO L158 Benchmark]: Toolchain (without parser) took 1302.46ms. Allocated memory was 127.9MB in the beginning and 163.6MB in the end (delta: 35.7MB). Free memory was 84.0MB in the beginning and 121.4MB in the end (delta: -37.3MB). Peak memory consumption was 1.4MB. Max. memory is 16.1GB. [2022-11-20 20:52:02,765 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 127.9MB. Free memory is still 73.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:52:02,766 INFO L158 Benchmark]: CACSL2BoogieTranslator took 351.60ms. Allocated memory is still 127.9MB. Free memory was 84.0MB in the beginning and 72.7MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 20:52:02,767 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.82ms. Allocated memory is still 127.9MB. Free memory was 72.3MB in the beginning and 70.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:52:02,767 INFO L158 Benchmark]: Boogie Preprocessor took 56.62ms. Allocated memory is still 127.9MB. Free memory was 70.6MB in the beginning and 69.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:52:02,768 INFO L158 Benchmark]: RCFGBuilder took 420.88ms. Allocated memory was 127.9MB in the beginning and 163.6MB in the end (delta: 35.7MB). Free memory was 69.3MB in the beginning and 135.0MB in the end (delta: -65.6MB). Peak memory consumption was 22.1MB. Max. memory is 16.1GB. [2022-11-20 20:52:02,769 INFO L158 Benchmark]: TraceAbstraction took 386.88ms. Allocated memory is still 163.6MB. Free memory was 134.3MB in the beginning and 121.4MB in the end (delta: 12.9MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2022-11-20 20:52:02,770 INFO L158 Benchmark]: Witness Printer took 8.70ms. Allocated memory is still 163.6MB. Free memory was 121.4MB in the beginning and 121.4MB in the end (delta: 3.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:52:02,774 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 127.9MB. Free memory is still 73.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 351.60ms. Allocated memory is still 127.9MB. Free memory was 84.0MB in the beginning and 72.7MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.82ms. Allocated memory is still 127.9MB. Free memory was 72.3MB in the beginning and 70.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.62ms. Allocated memory is still 127.9MB. Free memory was 70.6MB in the beginning and 69.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 420.88ms. Allocated memory was 127.9MB in the beginning and 163.6MB in the end (delta: 35.7MB). Free memory was 69.3MB in the beginning and 135.0MB in the end (delta: -65.6MB). Peak memory consumption was 22.1MB. Max. memory is 16.1GB. * TraceAbstraction took 386.88ms. Allocated memory is still 163.6MB. Free memory was 134.3MB in the beginning and 121.4MB in the end (delta: 12.9MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. * Witness Printer took 8.70ms. Allocated memory is still 163.6MB. Free memory was 121.4MB in the beginning and 121.4MB in the end (delta: 3.5kB). 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: 102]: 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 91, overapproximation of someBinaryDOUBLEComparisonOperation at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 80. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -1.2f && IN < 1.2f) [L75] COND FALSE !(!cond) [L91] RET assume_abort_if_not(IN > -1.2f && IN < 1.2f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=109] [L102] 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 1 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, 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=15occurred 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 [2022-11-20 20:52:02,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_1_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9 --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 bad8530dca87d639d49a604251c8b439dfbb73c75b0c2bc923bd7483617ddb0d --- 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-6b4ec56 [2022-11-20 20:52:05,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:52:05,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:52:05,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:52:05,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:52:05,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:52:05,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:52:05,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:52:05,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:52:05,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:52:05,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:52:05,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:52:05,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:52:05,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:52:05,281 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:52:05,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:52:05,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:52:05,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:52:05,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:52:05,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:52:05,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:52:05,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:52:05,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:52:05,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:52:05,314 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:52:05,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:52:05,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:52:05,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:52:05,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:52:05,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:52:05,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:52:05,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:52:05,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:52:05,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:52:05,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:52:05,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:52:05,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:52:05,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:52:05,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:52:05,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:52:05,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:52:05,334 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-20 20:52:05,373 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:52:05,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:52:05,374 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:52:05,375 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:52:05,376 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:52:05,376 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:52:05,376 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:52:05,377 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:52:05,377 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:52:05,377 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:52:05,378 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:52:05,378 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:52:05,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:52:05,382 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:52:05,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:52:05,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:52:05,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:52:05,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:52:05,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:52:05,383 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 20:52:05,383 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 20:52:05,383 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 20:52:05,384 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:52:05,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:52:05,384 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:52:05,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:52:05,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:52:05,385 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 20:52:05,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:52:05,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:52:05,385 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:52:05,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:52:05,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:52:05,386 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-20 20:52:05,386 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 20:52:05,387 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:52:05,387 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:52:05,387 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 20:52:05,387 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_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bad8530dca87d639d49a604251c8b439dfbb73c75b0c2bc923bd7483617ddb0d [2022-11-20 20:52:05,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:52:05,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:52:05,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:52:05,841 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:52:05,841 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:52:05,843 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/combinations/gcd_2+newton_1_6.i [2022-11-20 20:52:08,963 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:52:09,226 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:52:09,227 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/sv-benchmarks/c/combinations/gcd_2+newton_1_6.i [2022-11-20 20:52:09,236 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/data/fe74837fe/6ad83a610a4f4a798ce6a711c6141961/FLAG4b0e8aa81 [2022-11-20 20:52:09,260 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/data/fe74837fe/6ad83a610a4f4a798ce6a711c6141961 [2022-11-20 20:52:09,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:52:09,267 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:52:09,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:52:09,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:52:09,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:52:09,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:52:09" (1/1) ... [2022-11-20 20:52:09,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e438d33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:52:09, skipping insertion in model container [2022-11-20 20:52:09,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:52:09" (1/1) ... [2022-11-20 20:52:09,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:52:09,303 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:52:09,536 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_8231e16b-a104-485c-8d61-52debde042d1/sv-benchmarks/c/combinations/gcd_2+newton_1_6.i[1226,1239] [2022-11-20 20:52:09,585 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_8231e16b-a104-485c-8d61-52debde042d1/sv-benchmarks/c/combinations/gcd_2+newton_1_6.i[2820,2833] [2022-11-20 20:52:09,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:52:09,608 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:52:09,631 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_8231e16b-a104-485c-8d61-52debde042d1/sv-benchmarks/c/combinations/gcd_2+newton_1_6.i[1226,1239] [2022-11-20 20:52:09,642 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_8231e16b-a104-485c-8d61-52debde042d1/sv-benchmarks/c/combinations/gcd_2+newton_1_6.i[2820,2833] [2022-11-20 20:52:09,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:52:09,672 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:52:09,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:52:09 WrapperNode [2022-11-20 20:52:09,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:52:09,673 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:52:09,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:52:09,674 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:52:09,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:52:09" (1/1) ... [2022-11-20 20:52:09,710 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:52:09" (1/1) ... [2022-11-20 20:52:09,747 INFO L138 Inliner]: procedures = 28, calls = 22, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 81 [2022-11-20 20:52:09,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:52:09,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:52:09,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:52:09,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:52:09,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:52:09" (1/1) ... [2022-11-20 20:52:09,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:52:09" (1/1) ... [2022-11-20 20:52:09,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:52:09" (1/1) ... [2022-11-20 20:52:09,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:52:09" (1/1) ... [2022-11-20 20:52:09,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:52:09" (1/1) ... [2022-11-20 20:52:09,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:52:09" (1/1) ... [2022-11-20 20:52:09,800 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:52:09" (1/1) ... [2022-11-20 20:52:09,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:52:09" (1/1) ... [2022-11-20 20:52:09,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:52:09,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:52:09,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:52:09,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:52:09,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:52:09" (1/1) ... [2022-11-20 20:52:09,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:52:09,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:52:09,852 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:52:09,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:52:09,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:52:09,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 20:52:09,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:52:09,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:52:10,011 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:52:10,014 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:52:17,027 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:52:17,033 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:52:17,034 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 20:52:17,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:52:17 BoogieIcfgContainer [2022-11-20 20:52:17,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:52:17,039 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:52:17,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:52:17,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:52:17,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:52:09" (1/3) ... [2022-11-20 20:52:17,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1e2ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:52:17, skipping insertion in model container [2022-11-20 20:52:17,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:52:09" (2/3) ... [2022-11-20 20:52:17,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c1e2ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:52:17, skipping insertion in model container [2022-11-20 20:52:17,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:52:17" (3/3) ... [2022-11-20 20:52:17,047 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_1_6.i [2022-11-20 20:52:17,066 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:52:17,067 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 20:52:17,108 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:52:17,114 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;@2c40e687, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:52:17,115 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 20:52:17,120 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 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) [2022-11-20 20:52:17,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 20:52:17,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:52:17,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:52:17,126 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:52:17,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:52:17,132 INFO L85 PathProgramCache]: Analyzing trace with hash 447749113, now seen corresponding path program 1 times [2022-11-20 20:52:17,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:52:17,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803351361] [2022-11-20 20:52:17,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:52:17,147 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 [2022-11-20 20:52:17,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:52:17,154 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/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) [2022-11-20 20:52:17,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 20:52:18,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:52:18,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 20:52:18,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:52:18,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:52:18,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:52:18,412 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:52:18,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803351361] [2022-11-20 20:52:18,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1803351361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:52:18,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:52:18,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:52:18,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087961491] [2022-11-20 20:52:18,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:52:18,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 20:52:18,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:52:18,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 20:52:18,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:52:18,452 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 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) 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) [2022-11-20 20:52:18,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:52:18,469 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2022-11-20 20:52:18,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 20:52:18,472 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 [2022-11-20 20:52:18,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:52:18,480 INFO L225 Difference]: With dead ends: 47 [2022-11-20 20:52:18,481 INFO L226 Difference]: Without dead ends: 19 [2022-11-20 20:52:18,484 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 [2022-11-20 20:52:18,488 INFO L413 NwaCegarLoop]: 31 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, 31 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 [2022-11-20 20:52:18,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:52:18,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-20 20:52:18,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-20 20:52:18,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 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) [2022-11-20 20:52:18,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-11-20 20:52:18,520 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 9 [2022-11-20 20:52:18,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:52:18,521 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-11-20 20:52:18,521 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) [2022-11-20 20:52:18,522 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-11-20 20:52:18,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 20:52:18,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:52:18,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:52:18,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 20:52:18,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 20:52:18,739 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:52:18,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:52:18,739 INFO L85 PathProgramCache]: Analyzing trace with hash 505007415, now seen corresponding path program 1 times [2022-11-20 20:52:18,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:52:18,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1764578752] [2022-11-20 20:52:18,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:52:18,741 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 [2022-11-20 20:52:18,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:52:18,745 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/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) [2022-11-20 20:52:18,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 20:52:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 20:52:30,702 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 20:52:41,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 20:52:41,939 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-20 20:52:41,939 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 20:52:41,942 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-20 20:52:41,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-20 20:52:42,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/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)] Forceful destruction successful, exit code 0 [2022-11-20 20:52:42,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 20:52:42,149 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-20 20:52:42,153 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 20:52:42,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:52:42 BoogieIcfgContainer [2022-11-20 20:52:42,178 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 20:52:42,179 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 20:52:42,179 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 20:52:42,179 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 20:52:42,180 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:52:17" (3/4) ... [2022-11-20 20:52:42,182 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-20 20:52:42,219 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 20:52:42,219 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 20:52:42,220 INFO L158 Benchmark]: Toolchain (without parser) took 32952.98ms. Allocated memory was 81.8MB in the beginning and 107.0MB in the end (delta: 25.2MB). Free memory was 59.0MB in the beginning and 79.5MB in the end (delta: -20.4MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2022-11-20 20:52:42,220 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 81.8MB. Free memory is still 59.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:52:42,221 INFO L158 Benchmark]: CACSL2BoogieTranslator took 404.48ms. Allocated memory is still 81.8MB. Free memory was 58.8MB in the beginning and 46.4MB in the end (delta: 12.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 20:52:42,221 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.65ms. Allocated memory is still 81.8MB. Free memory was 46.4MB in the beginning and 44.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:52:42,222 INFO L158 Benchmark]: Boogie Preprocessor took 63.00ms. Allocated memory is still 81.8MB. Free memory was 44.4MB in the beginning and 42.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:52:42,222 INFO L158 Benchmark]: RCFGBuilder took 7223.18ms. Allocated memory is still 81.8MB. Free memory was 42.8MB in the beginning and 56.1MB in the end (delta: -13.3MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2022-11-20 20:52:42,223 INFO L158 Benchmark]: TraceAbstraction took 25139.19ms. Allocated memory was 81.8MB in the beginning and 107.0MB in the end (delta: 25.2MB). Free memory was 55.4MB in the beginning and 81.5MB in the end (delta: -26.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:52:42,223 INFO L158 Benchmark]: Witness Printer took 40.19ms. Allocated memory is still 107.0MB. Free memory was 81.5MB in the beginning and 79.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:52:42,226 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 81.8MB. Free memory is still 59.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 404.48ms. Allocated memory is still 81.8MB. Free memory was 58.8MB in the beginning and 46.4MB in the end (delta: 12.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.65ms. Allocated memory is still 81.8MB. Free memory was 46.4MB in the beginning and 44.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.00ms. Allocated memory is still 81.8MB. Free memory was 44.4MB in the beginning and 42.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 7223.18ms. Allocated memory is still 81.8MB. Free memory was 42.8MB in the beginning and 56.1MB in the end (delta: -13.3MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. * TraceAbstraction took 25139.19ms. Allocated memory was 81.8MB in the beginning and 107.0MB in the end (delta: 25.2MB). Free memory was 55.4MB in the beginning and 81.5MB in the end (delta: -26.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 40.19ms. Allocated memory is still 107.0MB. Free memory was 81.5MB in the beginning and 79.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. 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 - CounterExampleResult [Line: 102]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -1.2f && IN < 1.2f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -1.2f && IN < 1.2f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=-0.8611910343170166, \result=-0.7587577700614929, x=-0.8611910343170166] [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=-0.8611910343170166, \result=0.6526601314544678, x=-0.8611910343170166] [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=-0.8611910343170166, x=0.30137085914611816] [L102] reach_error() VAL [IN=-0.8611910343170166, x=0.30137085914611816] - 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 1 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 25.1s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 31 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 13.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 38 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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! [2022-11-20 20:52:42,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8231e16b-a104-485c-8d61-52debde042d1/bin/utaipan-6cKwYrpEi9/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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE