./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_1+newton_3_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_1+newton_3_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --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 fb60664eb219cfca617a3a97a655d40aa192b004d90693207c446e4cc68b6381 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:17:35,513 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:17:35,634 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:17:35,642 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:17:35,643 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:17:35,690 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:17:35,691 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:17:35,693 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:17:35,694 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:17:35,696 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:17:35,697 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:17:35,697 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:17:35,698 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:17:35,700 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:17:35,701 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:17:35,701 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:17:35,701 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:17:35,702 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:17:35,702 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:17:35,703 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:17:35,703 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:17:35,708 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:17:35,708 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:17:35,709 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:17:35,709 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:17:35,709 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:17:35,710 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:17:35,732 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:17:35,733 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:17:35,733 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:17:35,733 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:17:35,734 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:17:35,734 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:17:35,734 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:17:35,735 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:17:35,735 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:17:35,735 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:17:35,736 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:17:35,736 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:17:35,737 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:17:35,737 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:17:35,738 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:17:35,738 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:17:35,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:17:35,739 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:17:35,740 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:17:35,740 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:17:35,740 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb60664eb219cfca617a3a97a655d40aa192b004d90693207c446e4cc68b6381 [2024-11-09 05:17:36,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:17:36,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:17:36,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:17:36,130 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:17:36,131 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:17:36,133 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/combinations/gcd_1+newton_3_8.i Unable to find full path for "g++" [2024-11-09 05:17:38,819 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:17:39,093 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:17:39,094 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/sv-benchmarks/c/combinations/gcd_1+newton_3_8.i [2024-11-09 05:17:39,105 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/data/7bac84842/c8ea7c18fb70407cb22afec21479d076/FLAGde9d60178 [2024-11-09 05:17:39,429 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/data/7bac84842/c8ea7c18fb70407cb22afec21479d076 [2024-11-09 05:17:39,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:17:39,435 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:17:39,437 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:17:39,437 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:17:39,448 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:17:39,449 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:17:39" (1/1) ... [2024-11-09 05:17:39,450 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37f1ee72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:17:39, skipping insertion in model container [2024-11-09 05:17:39,451 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:17:39" (1/1) ... [2024-11-09 05:17:39,490 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:17:39,726 WARN L250 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_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/sv-benchmarks/c/combinations/gcd_1+newton_3_8.i[1226,1239] [2024-11-09 05:17:39,772 WARN L250 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_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/sv-benchmarks/c/combinations/gcd_1+newton_3_8.i[2828,2841] [2024-11-09 05:17:39,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:17:39,790 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:17:39,809 WARN L250 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_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/sv-benchmarks/c/combinations/gcd_1+newton_3_8.i[1226,1239] [2024-11-09 05:17:39,827 WARN L250 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_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/sv-benchmarks/c/combinations/gcd_1+newton_3_8.i[2828,2841] [2024-11-09 05:17:39,829 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:17:39,856 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:17:39,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:17:39 WrapperNode [2024-11-09 05:17:39,858 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:17:39,859 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:17:39,859 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:17:39,859 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:17:39,867 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:17:39" (1/1) ... [2024-11-09 05:17:39,878 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:17:39" (1/1) ... [2024-11-09 05:17:39,910 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 90 [2024-11-09 05:17:39,910 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:17:39,911 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:17:39,911 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:17:39,912 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:17:39,926 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:17:39" (1/1) ... [2024-11-09 05:17:39,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:17:39" (1/1) ... [2024-11-09 05:17:39,929 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:17:39" (1/1) ... [2024-11-09 05:17:39,930 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:17:39" (1/1) ... [2024-11-09 05:17:39,951 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:17:39" (1/1) ... [2024-11-09 05:17:39,963 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:17:39" (1/1) ... [2024-11-09 05:17:39,965 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:17:39" (1/1) ... [2024-11-09 05:17:39,967 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:17:39" (1/1) ... [2024-11-09 05:17:39,970 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:17:39,972 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:17:39,972 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:17:39,972 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:17:39,974 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:17:39" (1/1) ... [2024-11-09 05:17:39,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:17:39,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:17:40,018 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:17:40,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:17:40,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:17:40,076 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2024-11-09 05:17:40,077 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2024-11-09 05:17:40,077 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-09 05:17:40,077 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-09 05:17:40,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:17:40,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:17:40,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:17:40,207 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:17:40,210 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:17:40,687 INFO L? ?]: Removed 31 outVars from TransFormulas that were not future-live. [2024-11-09 05:17:40,688 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:17:40,821 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:17:40,823 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 05:17:40,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:17:40 BoogieIcfgContainer [2024-11-09 05:17:40,824 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:17:40,832 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:17:40,832 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:17:40,838 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:17:40,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:17:39" (1/3) ... [2024-11-09 05:17:40,840 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a58e459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:17:40, skipping insertion in model container [2024-11-09 05:17:40,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:17:39" (2/3) ... [2024-11-09 05:17:40,843 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a58e459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:17:40, skipping insertion in model container [2024-11-09 05:17:40,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:17:40" (3/3) ... [2024-11-09 05:17:40,845 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_3_8.i [2024-11-09 05:17:40,864 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:17:40,864 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 05:17:40,946 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:17:40,953 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@6bb0c457, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:17:40,954 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-09 05:17:40,959 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 21 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 05:17:40,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 05:17:40,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:17:40,971 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:17:40,971 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:17:40,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:17:40,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1915277318, now seen corresponding path program 1 times [2024-11-09 05:17:40,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:17:40,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176203783] [2024-11-09 05:17:40,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:17:40,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:17:41,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:17:41,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:17:41,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:17:41,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176203783] [2024-11-09 05:17:41,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176203783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:17:41,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:17:41,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:17:41,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897797875] [2024-11-09 05:17:41,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:17:41,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:17:41,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:17:41,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:17:41,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:17:41,485 INFO L87 Difference]: Start difference. First operand has 30 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 21 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2024-11-09 05:17:41,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:17:41,591 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2024-11-09 05:17:41,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:17:41,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2024-11-09 05:17:41,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:17:41,606 INFO L225 Difference]: With dead ends: 41 [2024-11-09 05:17:41,606 INFO L226 Difference]: Without dead ends: 27 [2024-11-09 05:17:41,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:17:41,618 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:17:41,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 50 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:17:41,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-09 05:17:41,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-09 05:17:41,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 05:17:41,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2024-11-09 05:17:41,688 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 7 [2024-11-09 05:17:41,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:17:41,689 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2024-11-09 05:17:41,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2024-11-09 05:17:41,690 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2024-11-09 05:17:41,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 05:17:41,691 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:17:41,691 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:17:41,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:17:41,692 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:17:41,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:17:41,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1689653471, now seen corresponding path program 1 times [2024-11-09 05:17:41,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:17:41,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523080171] [2024-11-09 05:17:41,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:17:41,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:17:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:17:42,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:17:42,220 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:17:42,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523080171] [2024-11-09 05:17:42,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523080171] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:17:42,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549134940] [2024-11-09 05:17:42,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:17:42,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:17:42,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:17:42,224 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:17:42,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:17:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:17:42,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 05:17:42,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:17:42,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:17:42,469 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:17:42,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:17:42,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549134940] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:17:42,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1145479610] [2024-11-09 05:17:42,568 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 05:17:42,568 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:17:42,573 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:17:42,582 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:17:42,583 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:17:50,242 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:17:50,664 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '130#true' at error location [2024-11-09 05:17:50,665 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:17:50,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 05:17:50,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-09 05:17:50,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035906502] [2024-11-09 05:17:50,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 05:17:50,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 05:17:50,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:17:50,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 05:17:50,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:17:50,670 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2024-11-09 05:17:50,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:17:50,747 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2024-11-09 05:17:50,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:17:50,748 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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 [2024-11-09 05:17:50,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:17:50,750 INFO L225 Difference]: With dead ends: 33 [2024-11-09 05:17:50,750 INFO L226 Difference]: Without dead ends: 29 [2024-11-09 05:17:50,751 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:17:50,752 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 4 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:17:50,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 85 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:17:50,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-09 05:17:50,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-09 05:17:50,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 05:17:50,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2024-11-09 05:17:50,761 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 9 [2024-11-09 05:17:50,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:17:50,761 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2024-11-09 05:17:50,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2024-11-09 05:17:50,762 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2024-11-09 05:17:50,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 05:17:50,763 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:17:50,763 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:17:50,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 05:17:50,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:17:50,968 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:17:50,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:17:50,969 INFO L85 PathProgramCache]: Analyzing trace with hash -10466172, now seen corresponding path program 2 times [2024-11-09 05:17:50,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:17:50,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722526133] [2024-11-09 05:17:50,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:17:50,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:17:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-09 05:17:51,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1112833390] [2024-11-09 05:17:51,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 05:17:51,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:17:51,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:17:51,040 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:17:51,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:18:01,082 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 05:18:01,083 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:18:01,087 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 05:18:01,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:18:09,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:18:09,259 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:19:35,031 WARN L286 SmtUtils]: Spent 47.64s on a formula simplification. DAG size of input: 123 DAG size of output: 120 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:20:40,406 WARN L286 SmtUtils]: Spent 21.93s on a formula simplification that was a NOOP. DAG size: 122 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:21:00,222 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:21:00,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:21:00,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722526133] [2024-11-09 05:21:00,222 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-09 05:21:00,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112833390] [2024-11-09 05:21:00,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112833390] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:21:00,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [882111503] [2024-11-09 05:21:00,226 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2024-11-09 05:21:00,226 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:21:00,226 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:21:00,227 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:21:00,227 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:21:05,316 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 05:21:09,597 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '278#true' at error location [2024-11-09 05:21:09,598 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 05:21:09,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-09 05:21:09,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 12 [2024-11-09 05:21:09,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423036662] [2024-11-09 05:21:09,598 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-09 05:21:09,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 05:21:09,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:21:09,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 05:21:09,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=195, Unknown=3, NotChecked=0, Total=240 [2024-11-09 05:21:09,600 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 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) [2024-11-09 05:21:28,217 WARN L286 SmtUtils]: Spent 16.04s on a formula simplification. DAG size of input: 43 DAG size of output: 27 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 05:21:29,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-09 05:21:31,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:21:31,686 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2024-11-09 05:21:31,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:21:31,690 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 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 11 [2024-11-09 05:21:31,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:21:31,691 INFO L225 Difference]: With dead ends: 29 [2024-11-09 05:21:31,691 INFO L226 Difference]: Without dead ends: 18 [2024-11-09 05:21:31,691 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 105.4s TimeCoverageRelationStatistics Valid=46, Invalid=222, Unknown=4, NotChecked=0, Total=272 [2024-11-09 05:21:31,693 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-09 05:21:31,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 172 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-09 05:21:31,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-09 05:21:31,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-09 05:21:31,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 9 states have (on average 1.0) internal successors, (9), 9 states have internal predecessors, (9), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 05:21:31,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2024-11-09 05:21:31,699 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 11 [2024-11-09 05:21:31,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:21:31,699 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2024-11-09 05:21:31,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 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) [2024-11-09 05:21:31,700 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2024-11-09 05:21:31,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 05:21:31,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:21:31,701 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:21:31,713 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 05:21:31,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:21:31,902 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:21:31,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:21:31,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1619029535, now seen corresponding path program 1 times [2024-11-09 05:21:31,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:21:31,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649190608] [2024-11-09 05:21:31,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:21:31,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:21:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 05:21:31,921 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 05:21:31,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 05:21:31,969 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-09 05:21:31,970 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 05:21:31,972 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-09 05:21:31,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-09 05:21:31,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:21:31,981 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-11-09 05:21:32,022 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 05:21:32,030 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:21:32 BoogieIcfgContainer [2024-11-09 05:21:32,030 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 05:21:32,031 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 05:21:32,035 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 05:21:32,036 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 05:21:32,037 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:17:40" (3/4) ... [2024-11-09 05:21:32,043 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-09 05:21:32,048 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 05:21:32,050 INFO L158 Benchmark]: Toolchain (without parser) took 232615.07ms. Allocated memory was 165.7MB in the beginning and 211.8MB in the end (delta: 46.1MB). Free memory was 125.8MB in the beginning and 75.3MB in the end (delta: 50.5MB). Peak memory consumption was 98.2MB. Max. memory is 16.1GB. [2024-11-09 05:21:32,054 INFO L158 Benchmark]: CDTParser took 0.90ms. Allocated memory is still 165.7MB. Free memory is still 132.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:21:32,055 INFO L158 Benchmark]: CACSL2BoogieTranslator took 421.57ms. Allocated memory is still 165.7MB. Free memory was 125.8MB in the beginning and 112.0MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 05:21:32,055 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.58ms. Allocated memory is still 165.7MB. Free memory was 112.0MB in the beginning and 109.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:21:32,056 INFO L158 Benchmark]: Boogie Preprocessor took 59.72ms. Allocated memory is still 165.7MB. Free memory was 109.9MB in the beginning and 108.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:21:32,057 INFO L158 Benchmark]: RCFGBuilder took 852.38ms. Allocated memory is still 165.7MB. Free memory was 108.5MB in the beginning and 90.1MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-09 05:21:32,057 INFO L158 Benchmark]: TraceAbstraction took 231198.46ms. Allocated memory was 165.7MB in the beginning and 211.8MB in the end (delta: 46.1MB). Free memory was 89.6MB in the beginning and 75.3MB in the end (delta: 14.3MB). Peak memory consumption was 62.6MB. Max. memory is 16.1GB. [2024-11-09 05:21:32,058 INFO L158 Benchmark]: Witness Printer took 17.93ms. Allocated memory is still 211.8MB. Free memory is still 75.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:21:32,063 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.90ms. Allocated memory is still 165.7MB. Free memory is still 132.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 421.57ms. Allocated memory is still 165.7MB. Free memory was 125.8MB in the beginning and 112.0MB in the end (delta: 13.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.58ms. Allocated memory is still 165.7MB. Free memory was 112.0MB in the beginning and 109.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.72ms. Allocated memory is still 165.7MB. Free memory was 109.9MB in the beginning and 108.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 852.38ms. Allocated memory is still 165.7MB. Free memory was 108.5MB in the beginning and 90.1MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 231198.46ms. Allocated memory was 165.7MB in the beginning and 211.8MB in the end (delta: 46.1MB). Free memory was 89.6MB in the beginning and 75.3MB in the end (delta: 14.3MB). Peak memory consumption was 62.6MB. Max. memory is 16.1GB. * Witness Printer took 17.93ms. Allocated memory is still 211.8MB. Free memory is still 75.3MB. 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 a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 91, overapproximation of someBinaryDOUBLEComparisonOperation at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 97. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L75] COND FALSE !(!cond) [L91] RET assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L93] CALL, EXPR f(IN) VAL [\old(x)=109] [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) VAL [IN=109] [L93] CALL, EXPR fp(IN) VAL [\old(x)=109] [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) VAL [IN=109] [L93] float x = IN - f(IN)/fp(IN); [L95] CALL, EXPR f(x) VAL [\old(x)=110] [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L95] RET, EXPR f(x) VAL [IN=109, x=110] [L95] CALL, EXPR fp(x) VAL [\old(x)=110] [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L95] RET, EXPR fp(x) VAL [IN=109, x=110] [L95] x = x - f(x)/fp(x) [L97] CALL, EXPR f(x) VAL [\old(x)=111] [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L97] RET, EXPR f(x) VAL [IN=109, x=111] [L97] CALL, EXPR fp(x) VAL [\old(x)=111] [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L97] RET, EXPR fp(x) VAL [IN=109, x=111] [L97] x = x - f(x)/fp(x) [L101] COND TRUE !(x < 0.1) VAL [IN=109] [L102] reach_error() VAL [IN=109] - UnprovableResult [Line: 27]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 30 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 231.1s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 22.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 307 SdHoareTripleChecker+Invalid, 3.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 240 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 125 IncrementalHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 67 mSDtfsCounter, 125 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 105.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 10.2s SatisfiabilityAnalysisTime, 180.1s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 50 ConstructedInterpolants, 4 QuantifiedInterpolants, 3132 SizeOfPredicates, 0 NumberOfNonLiveVariables, 140 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 6 InterpolantComputations, 1 PerfectInterpolantSequences, 2/11 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 [2024-11-09 05:21:32,288 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2024-11-09 05:21:32,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/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_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_1+newton_3_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --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 fb60664eb219cfca617a3a97a655d40aa192b004d90693207c446e4cc68b6381 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:21:35,177 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:21:35,325 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-09 05:21:35,334 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:21:35,335 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:21:35,386 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:21:35,389 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:21:35,389 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:21:35,391 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:21:35,392 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:21:35,393 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:21:35,394 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:21:35,395 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:21:35,395 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:21:35,398 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:21:35,399 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:21:35,400 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:21:35,400 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:21:35,401 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:21:35,401 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:21:35,402 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:21:35,403 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:21:35,403 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:21:35,404 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:21:35,404 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 05:21:35,405 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-09 05:21:35,406 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:21:35,406 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-09 05:21:35,407 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:21:35,407 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:21:35,408 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:21:35,409 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:21:35,409 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 05:21:35,410 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:21:35,410 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:21:35,411 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:21:35,411 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:21:35,412 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:21:35,412 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:21:35,413 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-09 05:21:35,413 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-09 05:21:35,417 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:21:35,418 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:21:35,418 INFO L153 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_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb60664eb219cfca617a3a97a655d40aa192b004d90693207c446e4cc68b6381 [2024-11-09 05:21:35,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:21:35,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:21:35,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:21:35,979 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:21:35,980 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:21:35,982 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/combinations/gcd_1+newton_3_8.i Unable to find full path for "g++" [2024-11-09 05:21:38,543 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:21:38,870 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:21:38,875 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/sv-benchmarks/c/combinations/gcd_1+newton_3_8.i [2024-11-09 05:21:38,898 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/data/a9fad5873/2d9c0aaebaeb45518af5e67b3df6d053/FLAG61853691b [2024-11-09 05:21:38,927 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/data/a9fad5873/2d9c0aaebaeb45518af5e67b3df6d053 [2024-11-09 05:21:38,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:21:38,935 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:21:38,937 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:21:38,938 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:21:38,945 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:21:38,946 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:21:38" (1/1) ... [2024-11-09 05:21:38,951 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38e035e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:21:38, skipping insertion in model container [2024-11-09 05:21:38,952 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:21:38" (1/1) ... [2024-11-09 05:21:38,995 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:21:39,314 WARN L250 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_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/sv-benchmarks/c/combinations/gcd_1+newton_3_8.i[1226,1239] [2024-11-09 05:21:39,369 WARN L250 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_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/sv-benchmarks/c/combinations/gcd_1+newton_3_8.i[2828,2841] [2024-11-09 05:21:39,379 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:21:39,401 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:21:39,420 WARN L250 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_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/sv-benchmarks/c/combinations/gcd_1+newton_3_8.i[1226,1239] [2024-11-09 05:21:39,437 WARN L250 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_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/sv-benchmarks/c/combinations/gcd_1+newton_3_8.i[2828,2841] [2024-11-09 05:21:39,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:21:39,467 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:21:39,468 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:21:39 WrapperNode [2024-11-09 05:21:39,469 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:21:39,470 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:21:39,471 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:21:39,471 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:21:39,482 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:21:39" (1/1) ... [2024-11-09 05:21:39,503 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:21:39" (1/1) ... [2024-11-09 05:21:39,548 INFO L138 Inliner]: procedures = 28, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 85 [2024-11-09 05:21:39,551 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:21:39,552 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:21:39,552 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:21:39,552 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:21:39,570 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:21:39" (1/1) ... [2024-11-09 05:21:39,571 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:21:39" (1/1) ... [2024-11-09 05:21:39,576 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:21:39" (1/1) ... [2024-11-09 05:21:39,580 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:21:39" (1/1) ... [2024-11-09 05:21:39,601 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:21:39" (1/1) ... [2024-11-09 05:21:39,609 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:21:39" (1/1) ... [2024-11-09 05:21:39,615 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:21:39" (1/1) ... [2024-11-09 05:21:39,617 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:21:39" (1/1) ... [2024-11-09 05:21:39,624 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:21:39,633 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:21:39,633 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:21:39,634 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:21:39,635 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:21:39" (1/1) ... [2024-11-09 05:21:39,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:21:39,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:21:39,681 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:21:39,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:21:39,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:21:39,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-09 05:21:39,753 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2024-11-09 05:21:39,754 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2024-11-09 05:21:39,754 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-09 05:21:39,766 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-09 05:21:39,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:21:39,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:21:39,875 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:21:39,878 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:21:50,922 INFO L? ?]: Removed 28 outVars from TransFormulas that were not future-live. [2024-11-09 05:21:50,922 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:21:50,940 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:21:50,942 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 05:21:50,942 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:21:50 BoogieIcfgContainer [2024-11-09 05:21:50,942 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:21:50,945 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:21:50,946 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:21:50,950 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:21:50,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:21:38" (1/3) ... [2024-11-09 05:21:50,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e12f0a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:21:50, skipping insertion in model container [2024-11-09 05:21:50,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:21:39" (2/3) ... [2024-11-09 05:21:50,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e12f0a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:21:50, skipping insertion in model container [2024-11-09 05:21:50,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:21:50" (3/3) ... [2024-11-09 05:21:50,954 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_3_8.i [2024-11-09 05:21:50,973 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:21:50,973 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 05:21:51,076 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:21:51,085 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@4099c34, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:21:51,086 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-09 05:21:51,091 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 32 states have internal predecessors, (41), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 05:21:51,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 05:21:51,102 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:21:51,103 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:21:51,104 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:21:51,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:21:51,115 INFO L85 PathProgramCache]: Analyzing trace with hash -247750664, now seen corresponding path program 1 times [2024-11-09 05:21:51,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:21:51,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1719637136] [2024-11-09 05:21:51,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:21:51,135 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 [2024-11-09 05:21:51,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:21:51,140 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 05:21:51,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:21:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:21:51,299 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 05:21:51,315 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:21:51,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:21:51,466 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:21:51,467 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:21:51,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1719637136] [2024-11-09 05:21:51,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1719637136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:21:51,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:21:51,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:21:51,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436120507] [2024-11-09 05:21:51,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:21:51,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:21:51,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:21:51,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:21:51,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:21:51,522 INFO L87 Difference]: Start difference. First operand has 41 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 32 states have internal predecessors, (41), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2024-11-09 05:21:51,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:21:51,675 INFO L93 Difference]: Finished difference Result 77 states and 98 transitions. [2024-11-09 05:21:51,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:21:51,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2024-11-09 05:21:51,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:21:51,687 INFO L225 Difference]: With dead ends: 77 [2024-11-09 05:21:51,688 INFO L226 Difference]: Without dead ends: 35 [2024-11-09 05:21:51,692 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:21:51,698 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 3 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:21:51,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 86 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:21:51,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-09 05:21:51,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-09 05:21:51,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 25 states have (on average 1.16) internal successors, (29), 26 states have internal predecessors, (29), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 05:21:51,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2024-11-09 05:21:51,752 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 11 [2024-11-09 05:21:51,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:21:51,752 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2024-11-09 05:21:51,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2024-11-09 05:21:51,753 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2024-11-09 05:21:51,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 05:21:51,757 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:21:51,759 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:21:51,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/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)] Ended with exit code 0 [2024-11-09 05:21:51,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:21:51,964 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:21:51,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:21:51,965 INFO L85 PathProgramCache]: Analyzing trace with hash -415487823, now seen corresponding path program 1 times [2024-11-09 05:21:51,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:21:51,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [527858429] [2024-11-09 05:21:51,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:21:51,967 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 [2024-11-09 05:21:51,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:21:51,971 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 05:21:51,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:21:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:21:52,097 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 05:21:52,102 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:21:52,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:21:52,550 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:21:52,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:21:52,936 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:21:52,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [527858429] [2024-11-09 05:21:52,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [527858429] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:21:52,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [791853162] [2024-11-09 05:21:52,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:21:52,938 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:21:52,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:21:52,942 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:21:52,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-09 05:21:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:21:53,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 05:21:53,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:21:53,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:21:53,559 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:21:53,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:21:53,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [791853162] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:21:53,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034507226] [2024-11-09 05:21:53,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:21:53,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:21:53,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:21:53,796 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:21:53,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 05:21:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:21:53,965 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 05:21:53,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:21:54,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:21:54,753 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:21:55,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:21:55,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034507226] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:21:55,212 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 05:21:55,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 7] total 11 [2024-11-09 05:21:55,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161219260] [2024-11-09 05:21:55,215 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 05:21:55,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 05:21:55,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:21:55,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 05:21:55,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-09 05:21:55,219 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 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) [2024-11-09 05:21:55,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:21:55,656 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2024-11-09 05:21:55,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:21:55,657 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 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 13 [2024-11-09 05:21:55,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:21:55,659 INFO L225 Difference]: With dead ends: 42 [2024-11-09 05:21:55,659 INFO L226 Difference]: Without dead ends: 37 [2024-11-09 05:21:55,660 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-09 05:21:55,662 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 7 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:21:55,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 160 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 05:21:55,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-09 05:21:55,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-09 05:21:55,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 28 states have internal predecessors, (31), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 05:21:55,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2024-11-09 05:21:55,684 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 13 [2024-11-09 05:21:55,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:21:55,685 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2024-11-09 05:21:55,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 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) [2024-11-09 05:21:55,686 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2024-11-09 05:21:55,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 05:21:55,687 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:21:55,687 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:21:55,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2024-11-09 05:21:55,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 05:21:56,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:21:56,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:21:56,289 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:21:56,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:21:56,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1887761044, now seen corresponding path program 2 times [2024-11-09 05:21:56,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:21:56,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633082892] [2024-11-09 05:21:56,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 05:21:56,292 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 [2024-11-09 05:21:56,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:21:56,296 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 05:21:56,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/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 (6)] Waiting until timeout for monitored process [2024-11-09 05:21:57,939 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 05:21:57,939 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:21:57,950 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 05:21:57,954 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:22:03,199 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:22:03,199 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:22:16,317 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:22:16,317 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:22:16,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633082892] [2024-11-09 05:22:16,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633082892] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:22:16,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2014256171] [2024-11-09 05:22:16,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 05:22:16,318 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:22:16,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:22:16,324 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:22:16,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-09 05:22:17,178 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 05:22:17,179 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:22:17,181 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-09 05:22:17,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:22:20,886 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:22:20,887 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:22:29,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:22:29,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2014256171] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:22:29,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408204841] [2024-11-09 05:22:29,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 05:22:29,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:22:29,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:22:29,177 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:22:29,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 05:22:30,816 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 05:22:30,817 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 05:22:30,840 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 05:22:30,843 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:22:34,083 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:22:34,084 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:22:45,831 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:22:45,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408204841] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:22:45,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 05:22:45,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 5, 9, 5, 12] total 17 [2024-11-09 05:22:45,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010929674] [2024-11-09 05:22:45,833 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 05:22:45,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 05:22:45,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:22:45,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 05:22:45,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=204, Unknown=1, NotChecked=0, Total=272 [2024-11-09 05:22:45,836 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 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) [2024-11-09 05:22:47,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:22:49,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:22:52,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-11-09 05:22:53,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 05:22:55,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 05:22:57,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 05:23:00,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 05:23:12,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:23:12,414 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2024-11-09 05:23:12,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 05:23:12,415 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 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 15 [2024-11-09 05:23:12,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:23:12,417 INFO L225 Difference]: With dead ends: 53 [2024-11-09 05:23:12,419 INFO L226 Difference]: Without dead ends: 38 [2024-11-09 05:23:12,420 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 67 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 38.7s TimeCoverageRelationStatistics Valid=78, Invalid=227, Unknown=1, NotChecked=0, Total=306 [2024-11-09 05:23:12,421 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 8 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:23:12,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 227 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 85 Invalid, 5 Unknown, 0 Unchecked, 16.7s Time] [2024-11-09 05:23:12,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-09 05:23:12,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-09 05:23:12,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 states have internal predecessors, (30), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 05:23:12,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2024-11-09 05:23:12,438 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 15 [2024-11-09 05:23:12,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:23:12,439 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2024-11-09 05:23:12,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 17 states have internal predecessors, (39), 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) [2024-11-09 05:23:12,441 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2024-11-09 05:23:12,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 05:23:12,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:23:12,442 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:23:12,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/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 (6)] Ended with exit code 0 [2024-11-09 05:23:12,652 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2024-11-09 05:23:12,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 05:23:13,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:23:13,044 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:23:13,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:23:13,045 INFO L85 PathProgramCache]: Analyzing trace with hash 10075241, now seen corresponding path program 1 times [2024-11-09 05:23:13,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:23:13,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [601017237] [2024-11-09 05:23:13,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:23:13,046 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 [2024-11-09 05:23:13,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:23:13,049 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 05:23:13,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/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 (9)] Waiting until timeout for monitored process [2024-11-09 05:23:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:23:13,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 05:23:13,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:23:13,724 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:23:13,724 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:23:14,328 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:23:14,329 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:23:14,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [601017237] [2024-11-09 05:23:14,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [601017237] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:23:14,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [710333692] [2024-11-09 05:23:14,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:23:14,329 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:23:14,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:23:14,333 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:23:14,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-11-09 05:23:15,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:23:15,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 05:23:15,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:23:16,807 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 05:23:16,808 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:23:24,050 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:23:24,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [710333692] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:23:24,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017767107] [2024-11-09 05:23:24,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:23:24,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:23:24,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:23:24,053 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:23:24,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 05:23:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:23:26,261 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 05:23:26,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:23:28,670 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 05:23:28,670 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:23:53,013 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:23:53,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017767107] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:23:53,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 05:23:53,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 5, 7, 5, 12] total 25 [2024-11-09 05:23:53,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057026387] [2024-11-09 05:23:53,014 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 05:23:53,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 05:23:53,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:23:53,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 05:23:53,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2024-11-09 05:23:53,020 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 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) [2024-11-09 05:23:53,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:23:53,716 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2024-11-09 05:23:53,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 05:23:53,729 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 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 17 [2024-11-09 05:23:53,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:23:53,729 INFO L225 Difference]: With dead ends: 38 [2024-11-09 05:23:53,730 INFO L226 Difference]: Without dead ends: 23 [2024-11-09 05:23:53,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 27.7s TimeCoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2024-11-09 05:23:53,731 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:23:53,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 373 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 05:23:53,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-09 05:23:53,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-09 05:23:53,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.0) internal successors, (14), 14 states have internal predecessors, (14), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-09 05:23:53,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-11-09 05:23:53,739 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 17 [2024-11-09 05:23:53,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:23:53,739 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-11-09 05:23:53,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 states have internal predecessors, (52), 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) [2024-11-09 05:23:53,740 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-11-09 05:23:53,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-09 05:23:53,741 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:23:53,741 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:23:53,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2024-11-09 05:23:53,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 05:23:54,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/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 (9)] Forceful destruction successful, exit code 0 [2024-11-09 05:23:54,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:23:54,342 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:23:54,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:23:54,343 INFO L85 PathProgramCache]: Analyzing trace with hash -614441937, now seen corresponding path program 1 times [2024-11-09 05:23:54,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:23:54,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1482980829] [2024-11-09 05:23:54,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:23:54,344 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 [2024-11-09 05:23:54,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:23:54,345 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/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) [2024-11-09 05:23:54,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/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 (12)] Waiting until timeout for monitored process [2024-11-09 05:24:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 05:24:24,506 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 05:24:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 05:24:54,365 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2024-11-09 05:24:54,365 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 05:24:54,366 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-09 05:24:54,368 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-09 05:24:54,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/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 (12)] Forceful destruction successful, exit code 0 [2024-11-09 05:24:54,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 05:24:54,572 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2024-11-09 05:24:54,602 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 05:24:54,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 05:24:54 BoogieIcfgContainer [2024-11-09 05:24:54,606 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 05:24:54,607 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 05:24:54,607 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 05:24:54,607 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 05:24:54,608 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:21:50" (3/4) ... [2024-11-09 05:24:54,609 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-09 05:24:54,658 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 05:24:54,658 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 05:24:54,659 INFO L158 Benchmark]: Toolchain (without parser) took 195724.05ms. Allocated memory is still 98.6MB. Free memory was 74.4MB in the beginning and 32.2MB in the end (delta: 42.2MB). Peak memory consumption was 44.1MB. Max. memory is 16.1GB. [2024-11-09 05:24:54,659 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 69.2MB. Free memory is still 44.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 05:24:54,660 INFO L158 Benchmark]: CACSL2BoogieTranslator took 532.29ms. Allocated memory is still 98.6MB. Free memory was 74.2MB in the beginning and 59.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-09 05:24:54,660 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.51ms. Allocated memory is still 98.6MB. Free memory was 59.5MB in the beginning and 57.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:24:54,661 INFO L158 Benchmark]: Boogie Preprocessor took 76.33ms. Allocated memory is still 98.6MB. Free memory was 57.7MB in the beginning and 56.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:24:54,661 INFO L158 Benchmark]: RCFGBuilder took 11309.65ms. Allocated memory is still 98.6MB. Free memory was 55.9MB in the beginning and 65.5MB in the end (delta: -9.6MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2024-11-09 05:24:54,661 INFO L158 Benchmark]: TraceAbstraction took 183660.97ms. Allocated memory is still 98.6MB. Free memory was 64.9MB in the beginning and 34.3MB in the end (delta: 30.6MB). Peak memory consumption was 32.2MB. Max. memory is 16.1GB. [2024-11-09 05:24:54,662 INFO L158 Benchmark]: Witness Printer took 51.28ms. Allocated memory is still 98.6MB. Free memory was 34.3MB in the beginning and 32.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 05:24:54,664 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 69.2MB. Free memory is still 44.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 532.29ms. Allocated memory is still 98.6MB. Free memory was 74.2MB in the beginning and 59.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.51ms. Allocated memory is still 98.6MB. Free memory was 59.5MB in the beginning and 57.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.33ms. Allocated memory is still 98.6MB. Free memory was 57.7MB in the beginning and 56.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 11309.65ms. Allocated memory is still 98.6MB. Free memory was 55.9MB in the beginning and 65.5MB in the end (delta: -9.6MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * TraceAbstraction took 183660.97ms. Allocated memory is still 98.6MB. Free memory was 64.9MB in the beginning and 34.3MB in the end (delta: 30.6MB). Peak memory consumption was 32.2MB. Max. memory is 16.1GB. * Witness Printer took 51.28ms. Allocated memory is still 98.6MB. Free memory was 34.3MB in the beginning and 32.2MB in the end (delta: 2.1MB). 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 > -2.0f && IN < 2.0f) [L75] COND FALSE !(!cond) [L91] RET assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L93] CALL, EXPR f(IN) VAL [\old(x)=1.634765625] [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)=1.634765625, \result=1.0101122856140137] [L93] RET, EXPR f(IN) VAL [IN=1.634765625] [L93] CALL, EXPR fp(IN) VAL [\old(x)=1.634765625] [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=1.634765625, \result=-0.012135086581110954] [L93] RET, EXPR fp(IN) VAL [IN=1.634765625] [L93] float x = IN - f(IN)/fp(IN); [L95] CALL, EXPR f(x) VAL [\old(x)=84.87374877929688] [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)=84.87374877929688, \result=6331417600] [L95] RET, EXPR f(x) VAL [x=84.87374877929688] [L95] CALL, EXPR fp(x) VAL [\old(x)=84.87374877929688] [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=84.87374877929688, \result=521326400] [L95] RET, EXPR fp(x) VAL [x=84.87374877929688] [L95] x = x - f(x)/fp(x) [L97] CALL, EXPR f(x) VAL [\old(x)=72.72892761230469] [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)=72.72892761230469, \result=2152492288] [L97] RET, EXPR f(x) VAL [x=72.72892761230469] [L97] CALL, EXPR fp(x) VAL [\old(x)=72.72892761230469] [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=72.72892761230469, \result=206709888] [L97] RET, EXPR fp(x) VAL [x=72.72892761230469] [L97] x = x - f(x)/fp(x) [L101] COND TRUE !(x < 0.1) [L102] reach_error() - UnprovableResult [Line: 27]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 41 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 183.5s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 28.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 18.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 846 SdHoareTripleChecker+Invalid, 17.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 707 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 166 IncrementalHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 139 mSDtfsCounter, 166 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 264 GetRequests, 207 SyntacticMatches, 8 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 67.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 37.8s SatisfiabilityAnalysisTime, 84.8s InterpolantComputationTime, 180 NumberOfCodeBlocks, 180 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 262 ConstructedInterpolants, 17 QuantifiedInterpolants, 2192 SizeOfPredicates, 14 NumberOfNonLiveVariables, 478 ConjunctsInSsa, 149 ConjunctsInUnsatCore, 19 InterpolantComputations, 1 PerfectInterpolantSequences, 38/84 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! [2024-11-09 05:24:54,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0e9d4b1-d54a-4319-b21b-37ed35c76cd8/bin/utaipan-verify-YMUCfTKeje/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