./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_3+newton_2_6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_dece0f3d-4b20-47cb-ae82-edf90e95991c/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dece0f3d-4b20-47cb-ae82-edf90e95991c/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dece0f3d-4b20-47cb-ae82-edf90e95991c/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dece0f3d-4b20-47cb-ae82-edf90e95991c/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_2_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dece0f3d-4b20-47cb-ae82-edf90e95991c/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dece0f3d-4b20-47cb-ae82-edf90e95991c/bin/utaipan-verify-t7M7D8N6sZ --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 3d09a4cc0bc23b63ede1d1b9d8e202055edfb550f267c616041c6cb452339e6a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:11:34,055 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:11:34,184 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dece0f3d-4b20-47cb-ae82-edf90e95991c/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 04:11:34,194 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:11:34,195 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:11:34,248 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:11:34,249 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:11:34,250 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:11:34,251 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:11:34,256 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:11:34,257 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:11:34,258 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:11:34,259 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:11:34,260 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:11:34,261 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:11:34,261 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:11:34,262 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:11:34,262 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:11:34,263 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:11:34,265 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:11:34,265 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:11:34,266 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:11:34,267 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:11:34,268 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:11:34,268 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:11:34,269 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:11:34,269 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:11:34,270 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:11:34,270 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:11:34,271 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:11:34,272 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:11:34,272 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:11:34,273 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:11:34,273 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:11:34,273 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:11:34,273 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:11:34,274 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:11:34,274 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:11:34,279 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:11:34,280 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:11:34,280 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:11:34,280 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:11:34,281 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:11:34,281 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:11:34,281 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:11:34,282 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_dece0f3d-4b20-47cb-ae82-edf90e95991c/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dece0f3d-4b20-47cb-ae82-edf90e95991c/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d09a4cc0bc23b63ede1d1b9d8e202055edfb550f267c616041c6cb452339e6a [2023-11-19 04:11:34,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:11:34,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:11:34,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:11:34,635 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:11:34,635 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:11:34,638 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dece0f3d-4b20-47cb-ae82-edf90e95991c/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/combinations/gcd_3+newton_2_6.i [2023-11-19 04:11:37,687 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:11:37,895 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:11:37,896 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dece0f3d-4b20-47cb-ae82-edf90e95991c/sv-benchmarks/c/combinations/gcd_3+newton_2_6.i [2023-11-19 04:11:37,910 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dece0f3d-4b20-47cb-ae82-edf90e95991c/bin/utaipan-verify-t7M7D8N6sZ/data/a333204c1/db320ed2d1884192ae84c1ffd725835b/FLAG9748bba4b [2023-11-19 04:11:37,924 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dece0f3d-4b20-47cb-ae82-edf90e95991c/bin/utaipan-verify-t7M7D8N6sZ/data/a333204c1/db320ed2d1884192ae84c1ffd725835b [2023-11-19 04:11:37,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:11:37,928 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:11:37,930 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:11:37,930 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:11:37,936 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:11:37,937 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:11:37" (1/1) ... [2023-11-19 04:11:37,938 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@328758c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:37, skipping insertion in model container [2023-11-19 04:11:37,938 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:11:37" (1/1) ... [2023-11-19 04:11:37,963 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:11:38,160 WARN L240 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_dece0f3d-4b20-47cb-ae82-edf90e95991c/sv-benchmarks/c/combinations/gcd_3+newton_2_6.i[1226,1239] [2023-11-19 04:11:38,215 WARN L240 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_dece0f3d-4b20-47cb-ae82-edf90e95991c/sv-benchmarks/c/combinations/gcd_3+newton_2_6.i[2841,2854] [2023-11-19 04:11:38,221 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:11:38,238 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:11:38,251 WARN L240 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_dece0f3d-4b20-47cb-ae82-edf90e95991c/sv-benchmarks/c/combinations/gcd_3+newton_2_6.i[1226,1239] [2023-11-19 04:11:38,267 WARN L240 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_dece0f3d-4b20-47cb-ae82-edf90e95991c/sv-benchmarks/c/combinations/gcd_3+newton_2_6.i[2841,2854] [2023-11-19 04:11:38,268 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:11:38,287 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:11:38,287 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:38 WrapperNode [2023-11-19 04:11:38,287 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:11:38,289 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:11:38,289 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:11:38,289 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:11:38,297 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:38" (1/1) ... [2023-11-19 04:11:38,306 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:38" (1/1) ... [2023-11-19 04:11:38,330 INFO L138 Inliner]: procedures = 27, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 88 [2023-11-19 04:11:38,330 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:11:38,332 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:11:38,332 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:11:38,333 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:11:38,341 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:38" (1/1) ... [2023-11-19 04:11:38,341 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:38" (1/1) ... [2023-11-19 04:11:38,343 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:38" (1/1) ... [2023-11-19 04:11:38,344 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:38" (1/1) ... [2023-11-19 04:11:38,350 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:38" (1/1) ... [2023-11-19 04:11:38,354 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:38" (1/1) ... [2023-11-19 04:11:38,356 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:38" (1/1) ... [2023-11-19 04:11:38,357 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:38" (1/1) ... [2023-11-19 04:11:38,360 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:11:38,361 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:11:38,361 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:11:38,361 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:11:38,362 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:38" (1/1) ... [2023-11-19 04:11:38,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:11:38,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dece0f3d-4b20-47cb-ae82-edf90e95991c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:11:38,410 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dece0f3d-4b20-47cb-ae82-edf90e95991c/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:11:38,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dece0f3d-4b20-47cb-ae82-edf90e95991c/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:11:38,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:11:38,449 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2023-11-19 04:11:38,449 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2023-11-19 04:11:38,451 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-11-19 04:11:38,452 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-11-19 04:11:38,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:11:38,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:11:38,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:11:38,596 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:11:38,599 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:11:38,846 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:11:38,922 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:11:38,922 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:11:38,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:11:38 BoogieIcfgContainer [2023-11-19 04:11:38,927 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:11:38,930 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:11:38,930 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:11:38,934 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:11:38,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:11:37" (1/3) ... [2023-11-19 04:11:38,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c32d201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:11:38, skipping insertion in model container [2023-11-19 04:11:38,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:38" (2/3) ... [2023-11-19 04:11:38,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c32d201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:11:38, skipping insertion in model container [2023-11-19 04:11:38,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:11:38" (3/3) ... [2023-11-19 04:11:38,937 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_2_6.i [2023-11-19 04:11:38,957 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:11:38,958 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 04:11:39,003 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:11:39,010 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@5e2a3e9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:11:39,010 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 04:11:39,014 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 16 states have (on average 1.4375) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 04:11:39,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:11:39,021 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:11:39,021 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 04:11:39,022 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:11:39,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:11:39,028 INFO L85 PathProgramCache]: Analyzing trace with hash -499021812, now seen corresponding path program 1 times [2023-11-19 04:11:39,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:11:39,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131331439] [2023-11-19 04:11:39,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:39,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:11:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:11:39,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:11:39,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:11:39,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131331439] [2023-11-19 04:11:39,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131331439] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:11:39,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:11:39,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 04:11:39,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852536799] [2023-11-19 04:11:39,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:11:39,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 04:11:39,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:11:39,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 04:11:39,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 04:11:39,601 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.4375) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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) [2023-11-19 04:11:39,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:11:39,706 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2023-11-19 04:11:39,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:11:39,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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 6 [2023-11-19 04:11:39,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:11:39,717 INFO L225 Difference]: With dead ends: 37 [2023-11-19 04:11:39,717 INFO L226 Difference]: Without dead ends: 21 [2023-11-19 04:11:39,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:11:39,725 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 5 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:11:39,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 63 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:11:39,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-19 04:11:39,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-11-19 04:11:39,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 04:11:39,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2023-11-19 04:11:39,770 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 6 [2023-11-19 04:11:39,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:11:39,771 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2023-11-19 04:11:39,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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) [2023-11-19 04:11:39,772 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2023-11-19 04:11:39,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:11:39,774 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:11:39,774 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:11:39,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:11:39,775 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:11:39,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:11:39,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1643785969, now seen corresponding path program 1 times [2023-11-19 04:11:39,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:11:39,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407020077] [2023-11-19 04:11:39,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:39,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:11:39,801 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:11:39,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [298638772] [2023-11-19 04:11:39,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:11:39,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:11:39,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dece0f3d-4b20-47cb-ae82-edf90e95991c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:11:39,805 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dece0f3d-4b20-47cb-ae82-edf90e95991c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:11:39,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dece0f3d-4b20-47cb-ae82-edf90e95991c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:11:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:11:39,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-19 04:11:39,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:11:47,771 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse1 (mod (* 255 |c_ULTIMATE.start_main1_~x~0#1|) 256))) (let ((.cse5 (<= 0 |c_ULTIMATE.start_main1_~x~0#1|)) (.cse4 (<= (+ |c_ULTIMATE.start_main1_~x~0#1| 1) 0)) (.cse0 (<= .cse1 127)) (.cse3 (+ .cse1 (- 256))) (.cse2 (<= 128 .cse1))) (or (and (or (and .cse0 (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (<= |v_ULTIMATE.start_gcd_test_~b#1_24| 127) (= (mod (mod .cse1 |v_ULTIMATE.start_gcd_test_~b#1_24|) 256) 0) (<= |c_ULTIMATE.start_main1_~g~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (not (= |v_ULTIMATE.start_gcd_test_~b#1_24| 0)) (<= 0 |v_ULTIMATE.start_gcd_test_~b#1_24|)))) (and .cse2 (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (<= |v_ULTIMATE.start_gcd_test_~b#1_24| 127) (<= |c_ULTIMATE.start_main1_~g~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (not (= |v_ULTIMATE.start_gcd_test_~b#1_24| 0)) (= (mod .cse3 |v_ULTIMATE.start_gcd_test_~b#1_24|) 0) (<= 0 |v_ULTIMATE.start_gcd_test_~b#1_24|))))) .cse4) (and (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (<= |v_ULTIMATE.start_gcd_test_~b#1_24| 127) (= (mod (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) 256) 0) (<= |c_ULTIMATE.start_main1_~g~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (not (= |v_ULTIMATE.start_gcd_test_~b#1_24| 0)) (<= 0 |v_ULTIMATE.start_gcd_test_~b#1_24|))) .cse5) (and (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (= (mod (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) 256) 0) (<= |c_ULTIMATE.start_main1_~g~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_24| 1) 0) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~b#1_24|)))) .cse5) (and .cse4 (or (and .cse0 (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (= (mod (mod .cse1 |v_ULTIMATE.start_gcd_test_~b#1_24|) 256) 0) (<= |c_ULTIMATE.start_main1_~g~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_24| 1) 0) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~b#1_24|))))) (and (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (<= |c_ULTIMATE.start_main1_~g~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_24| 1) 0) (= (mod .cse3 |v_ULTIMATE.start_gcd_test_~b#1_24|) 0))) .cse2)))))) is different from true [2023-11-19 04:11:50,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:11:50,063 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:11:56,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:11:56,610 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:11:56,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407020077] [2023-11-19 04:11:56,610 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:11:56,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298638772] [2023-11-19 04:11:56,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298638772] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:11:56,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1970873797] [2023-11-19 04:11:56,648 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-19 04:11:56,649 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:11:56,652 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:11:56,658 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:11:56,658 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:11:58,776 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:12:02,556 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '155#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 1 |ULTIMATE.start_main1_~x~0#1|) (<= (+ |ULTIMATE.start_main1_~x~0#1| 1) |ULTIMATE.start_main1_~g~0#1|) (<= |ULTIMATE.start_gcd_test_#res#1| 127) (= |ULTIMATE.start_main1_~g~0#1| |ULTIMATE.start_gcd_test_#res#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0) (<= |ULTIMATE.start_main1_~y~0#1| 127) (<= 0 (+ |ULTIMATE.start_main1_~y~0#1| 128)))' at error location [2023-11-19 04:12:02,557 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:12:02,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 04:12:02,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-19 04:12:02,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090465831] [2023-11-19 04:12:02,559 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 04:12:02,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 04:12:02,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:12:02,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 04:12:02,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=145, Unknown=6, NotChecked=24, Total=210 [2023-11-19 04:12:02,562 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 10 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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) [2023-11-19 04:12:04,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-19 04:12:05,202 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main1_~x~0#1| 1))) (and (or (< |c_ULTIMATE.start_main1_~g~0#1| .cse0) (< |c_ULTIMATE.start_main1_~x~0#1| 1)) (let ((.cse2 (mod (* 255 |c_ULTIMATE.start_main1_~x~0#1|) 256))) (let ((.cse6 (<= 0 |c_ULTIMATE.start_main1_~x~0#1|)) (.cse5 (<= .cse0 0)) (.cse1 (<= .cse2 127)) (.cse4 (+ .cse2 (- 256))) (.cse3 (<= 128 .cse2))) (or (and (or (and .cse1 (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (<= |v_ULTIMATE.start_gcd_test_~b#1_24| 127) (= (mod (mod .cse2 |v_ULTIMATE.start_gcd_test_~b#1_24|) 256) 0) (<= |c_ULTIMATE.start_main1_~g~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (not (= |v_ULTIMATE.start_gcd_test_~b#1_24| 0)) (<= 0 |v_ULTIMATE.start_gcd_test_~b#1_24|)))) (and .cse3 (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (<= |v_ULTIMATE.start_gcd_test_~b#1_24| 127) (<= |c_ULTIMATE.start_main1_~g~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (not (= |v_ULTIMATE.start_gcd_test_~b#1_24| 0)) (= (mod .cse4 |v_ULTIMATE.start_gcd_test_~b#1_24|) 0) (<= 0 |v_ULTIMATE.start_gcd_test_~b#1_24|))))) .cse5) (and (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (<= |v_ULTIMATE.start_gcd_test_~b#1_24| 127) (= (mod (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) 256) 0) (<= |c_ULTIMATE.start_main1_~g~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (not (= |v_ULTIMATE.start_gcd_test_~b#1_24| 0)) (<= 0 |v_ULTIMATE.start_gcd_test_~b#1_24|))) .cse6) (and (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (= (mod (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) 256) 0) (<= |c_ULTIMATE.start_main1_~g~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_24| 1) 0) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~b#1_24|)))) .cse6) (and .cse5 (or (and .cse1 (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (= (mod (mod .cse2 |v_ULTIMATE.start_gcd_test_~b#1_24|) 256) 0) (<= |c_ULTIMATE.start_main1_~g~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_24| 1) 0) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~b#1_24|))))) (and (exists ((|v_ULTIMATE.start_gcd_test_~b#1_24| Int)) (and (<= |c_ULTIMATE.start_main1_~g~0#1| |v_ULTIMATE.start_gcd_test_~b#1_24|) (<= (+ |v_ULTIMATE.start_gcd_test_~b#1_24| 1) 0) (= (mod .cse4 |v_ULTIMATE.start_gcd_test_~b#1_24|) 0))) .cse3)))))))) is different from true [2023-11-19 04:12:07,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-19 04:12:10,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:12:10,553 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2023-11-19 04:12:10,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 04:12:10,554 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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 [2023-11-19 04:12:10,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:12:10,556 INFO L225 Difference]: With dead ends: 30 [2023-11-19 04:12:10,556 INFO L226 Difference]: Without dead ends: 24 [2023-11-19 04:12:10,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=8, NotChecked=58, Total=306 [2023-11-19 04:12:10,559 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 1 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:12:10,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 69 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 2 Unknown, 36 Unchecked, 5.1s Time] [2023-11-19 04:12:10,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-19 04:12:10,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-19 04:12:10,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 04:12:10,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2023-11-19 04:12:10,573 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 7 [2023-11-19 04:12:10,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:12:10,573 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2023-11-19 04:12:10,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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) [2023-11-19 04:12:10,574 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2023-11-19 04:12:10,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 04:12:10,575 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:12:10,575 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-11-19 04:12:10,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dece0f3d-4b20-47cb-ae82-edf90e95991c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 04:12:10,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dece0f3d-4b20-47cb-ae82-edf90e95991c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:12:10,781 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:12:10,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:12:10,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1587976524, now seen corresponding path program 2 times [2023-11-19 04:12:10,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:12:10,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689469133] [2023-11-19 04:12:10,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:12:10,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:12:10,794 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:12:10,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [565409925] [2023-11-19 04:12:10,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 04:12:10,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:12:10,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dece0f3d-4b20-47cb-ae82-edf90e95991c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:12:10,796 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dece0f3d-4b20-47cb-ae82-edf90e95991c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:12:10,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dece0f3d-4b20-47cb-ae82-edf90e95991c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:12:10,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-19 04:12:10,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:12:10,980 WARN L260 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-19 04:12:10,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:12:28,942 WARN L293 SmtUtils]: Spent 8.93s on a formula simplification. DAG size of input: 100 DAG size of output: 97 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-19 04:12:37,263 WARN L854 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_main1_~x~0#1| 127) (not (= |c_ULTIMATE.start_gcd_test_~a#1| 0)) (let ((.cse7 (mod (* 255 |c_ULTIMATE.start_main1_~x~0#1|) 256))) (let ((.cse2 (<= (+ |c_ULTIMATE.start_gcd_test_~a#1| 1) 0)) (.cse1 (<= .cse7 127)) (.cse4 (+ |c_ULTIMATE.start_gcd_test_~a#1| 256)) (.cse16 (<= 0 |c_ULTIMATE.start_main1_~x~0#1|)) (.cse13 (<= 128 .cse7)) (.cse0 (<= (+ |c_ULTIMATE.start_main1_~x~0#1| 1) 0)) (.cse15 (<= 0 |c_ULTIMATE.start_gcd_test_~a#1|)) (.cse9 (+ |c_ULTIMATE.start_gcd_test_~b#1| 256)) (.cse12 (+ .cse7 (- 256)))) (or (and .cse0 .cse1 .cse2 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse6 (mod .cse7 |v_ULTIMATE.start_gcd_test_~a#1_34|))) (let ((.cse3 (mod .cse6 256))) (let ((.cse5 (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse3))) (and (not (= .cse3 0)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_34| 1) 0) (= .cse4 (mod (+ .cse5 (* .cse6 255)) 256)) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_34|)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod .cse3 |c_ULTIMATE.start_gcd_test_~a#1|) 256)) (not (= .cse5 0)))))))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse11 (mod .cse12 |v_ULTIMATE.start_gcd_test_~a#1_34|))) (let ((.cse10 (+ (- 256) (mod (+ .cse11 |v_ULTIMATE.start_gcd_test_~a#1_34|) 256)))) (let ((.cse8 (mod .cse10 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (not (= .cse8 0)) (= (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse8) 256) .cse9) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_34| 1) 0) (= .cse4 (mod (+ (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse10) .cse11 |v_ULTIMATE.start_gcd_test_~a#1_34|) 256)) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_34|))))))) .cse13 .cse0 .cse2) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse14 (mod (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~a#1_34|) 256))) (and (not (= .cse14 0)) (<= |v_ULTIMATE.start_gcd_test_~a#1_34| 127) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_34|) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod .cse14 |c_ULTIMATE.start_gcd_test_~a#1|) 256)) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse14) 256))))) .cse15 .cse16) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse18 (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~a#1_34|))) (let ((.cse17 (mod .cse18 256))) (let ((.cse19 (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse17))) (and (not (= .cse17 0)) (= .cse4 (mod (+ (* 255 .cse18) .cse19) 256)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_34| 1) 0) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod .cse17 |c_ULTIMATE.start_gcd_test_~a#1|) 256)) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_34|)) (not (= .cse19 0))))))) .cse2 .cse16) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse20 (mod (mod .cse7 |v_ULTIMATE.start_gcd_test_~a#1_34|) 256))) (and (<= |v_ULTIMATE.start_gcd_test_~a#1_34| 127) (not (= .cse20 0)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_34|) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod .cse20 |c_ULTIMATE.start_gcd_test_~a#1|) 256)) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse20) 256))))) .cse0 .cse1 .cse15) (and (or (and .cse0 (or (and .cse1 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse21 (mod (mod .cse7 |v_ULTIMATE.start_gcd_test_~a#1_34|) 256))) (and (= (mod .cse21 |c_ULTIMATE.start_gcd_test_~a#1|) 0) (<= |v_ULTIMATE.start_gcd_test_~a#1_34| 127) (not (= .cse21 0)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_34|) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse21) 256)))))) (and .cse13 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse22 (+ (mod (+ (mod .cse12 |v_ULTIMATE.start_gcd_test_~a#1_34|) (* 255 |v_ULTIMATE.start_gcd_test_~a#1_34|)) 256) (- 256)))) (and (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse22) 256)) (<= |v_ULTIMATE.start_gcd_test_~a#1_34| 127) (= (mod .cse22 |c_ULTIMATE.start_gcd_test_~a#1|) 0) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_34|))))))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse24 (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~a#1_34|))) (let ((.cse23 (mod .cse24 256))) (let ((.cse25 (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse23))) (and (not (= .cse23 0)) (= .cse4 (mod (+ (* 255 .cse24) .cse25) 256)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_34| 1) 0) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_34|)) (= (mod .cse23 |c_ULTIMATE.start_gcd_test_~a#1|) 0) (not (= .cse25 0))))))) .cse16) (and (or (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse28 (mod .cse7 |v_ULTIMATE.start_gcd_test_~a#1_34|))) (let ((.cse26 (mod .cse28 256))) (let ((.cse27 (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse26))) (and (= (mod .cse26 |c_ULTIMATE.start_gcd_test_~a#1|) 0) (not (= .cse26 0)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_34| 1) 0) (= .cse4 (mod (+ .cse27 (* .cse28 255)) 256)) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_34|)) (not (= .cse27 0))))))) .cse1) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse30 (mod .cse12 |v_ULTIMATE.start_gcd_test_~a#1_34|))) (let ((.cse31 (+ (- 256) (mod (+ .cse30 |v_ULTIMATE.start_gcd_test_~a#1_34|) 256)))) (let ((.cse29 (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse31))) (and (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_34| 1) 0) (= .cse4 (mod (+ .cse29 .cse30 |v_ULTIMATE.start_gcd_test_~a#1_34|) 256)) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_34|)) (not (= .cse29 0)) (= (mod .cse31 |c_ULTIMATE.start_gcd_test_~a#1|) 0)))))) .cse13)) .cse0) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse32 (mod (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~a#1_34|) 256))) (and (not (= .cse32 0)) (<= |v_ULTIMATE.start_gcd_test_~a#1_34| 127) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_34|) (= (mod .cse32 |c_ULTIMATE.start_gcd_test_~a#1|) 0) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse32) 256))))) .cse16)) (= |c_ULTIMATE.start_gcd_test_~b#1| 0)) (and .cse13 .cse0 .cse15 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse33 (+ (mod (+ (mod .cse12 |v_ULTIMATE.start_gcd_test_~a#1_34|) (* 255 |v_ULTIMATE.start_gcd_test_~a#1_34|)) 256) (- 256)))) (let ((.cse34 (mod .cse33 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse33) 256)) (<= |v_ULTIMATE.start_gcd_test_~a#1_34| 127) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_34|) (= (mod (+ .cse34 (* |c_ULTIMATE.start_gcd_test_~a#1| 255)) 256) .cse9) (not (= .cse34 0))))))))))) is different from false [2023-11-19 04:12:37,294 WARN L876 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_main1_~x~0#1| 127) (not (= |c_ULTIMATE.start_gcd_test_~a#1| 0)) (let ((.cse7 (mod (* 255 |c_ULTIMATE.start_main1_~x~0#1|) 256))) (let ((.cse2 (<= (+ |c_ULTIMATE.start_gcd_test_~a#1| 1) 0)) (.cse1 (<= .cse7 127)) (.cse4 (+ |c_ULTIMATE.start_gcd_test_~a#1| 256)) (.cse16 (<= 0 |c_ULTIMATE.start_main1_~x~0#1|)) (.cse13 (<= 128 .cse7)) (.cse0 (<= (+ |c_ULTIMATE.start_main1_~x~0#1| 1) 0)) (.cse15 (<= 0 |c_ULTIMATE.start_gcd_test_~a#1|)) (.cse9 (+ |c_ULTIMATE.start_gcd_test_~b#1| 256)) (.cse12 (+ .cse7 (- 256)))) (or (and .cse0 .cse1 .cse2 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse6 (mod .cse7 |v_ULTIMATE.start_gcd_test_~a#1_34|))) (let ((.cse3 (mod .cse6 256))) (let ((.cse5 (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse3))) (and (not (= .cse3 0)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_34| 1) 0) (= .cse4 (mod (+ .cse5 (* .cse6 255)) 256)) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_34|)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod .cse3 |c_ULTIMATE.start_gcd_test_~a#1|) 256)) (not (= .cse5 0)))))))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse11 (mod .cse12 |v_ULTIMATE.start_gcd_test_~a#1_34|))) (let ((.cse10 (+ (- 256) (mod (+ .cse11 |v_ULTIMATE.start_gcd_test_~a#1_34|) 256)))) (let ((.cse8 (mod .cse10 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (not (= .cse8 0)) (= (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse8) 256) .cse9) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_34| 1) 0) (= .cse4 (mod (+ (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse10) .cse11 |v_ULTIMATE.start_gcd_test_~a#1_34|) 256)) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_34|))))))) .cse13 .cse0 .cse2) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse14 (mod (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~a#1_34|) 256))) (and (not (= .cse14 0)) (<= |v_ULTIMATE.start_gcd_test_~a#1_34| 127) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_34|) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod .cse14 |c_ULTIMATE.start_gcd_test_~a#1|) 256)) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse14) 256))))) .cse15 .cse16) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse18 (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~a#1_34|))) (let ((.cse17 (mod .cse18 256))) (let ((.cse19 (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse17))) (and (not (= .cse17 0)) (= .cse4 (mod (+ (* 255 .cse18) .cse19) 256)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_34| 1) 0) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod .cse17 |c_ULTIMATE.start_gcd_test_~a#1|) 256)) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_34|)) (not (= .cse19 0))))))) .cse2 .cse16) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse20 (mod (mod .cse7 |v_ULTIMATE.start_gcd_test_~a#1_34|) 256))) (and (<= |v_ULTIMATE.start_gcd_test_~a#1_34| 127) (not (= .cse20 0)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_34|) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod .cse20 |c_ULTIMATE.start_gcd_test_~a#1|) 256)) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse20) 256))))) .cse0 .cse1 .cse15) (and (or (and .cse0 (or (and .cse1 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse21 (mod (mod .cse7 |v_ULTIMATE.start_gcd_test_~a#1_34|) 256))) (and (= (mod .cse21 |c_ULTIMATE.start_gcd_test_~a#1|) 0) (<= |v_ULTIMATE.start_gcd_test_~a#1_34| 127) (not (= .cse21 0)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_34|) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse21) 256)))))) (and .cse13 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse22 (+ (mod (+ (mod .cse12 |v_ULTIMATE.start_gcd_test_~a#1_34|) (* 255 |v_ULTIMATE.start_gcd_test_~a#1_34|)) 256) (- 256)))) (and (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse22) 256)) (<= |v_ULTIMATE.start_gcd_test_~a#1_34| 127) (= (mod .cse22 |c_ULTIMATE.start_gcd_test_~a#1|) 0) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_34|))))))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse24 (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~a#1_34|))) (let ((.cse23 (mod .cse24 256))) (let ((.cse25 (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse23))) (and (not (= .cse23 0)) (= .cse4 (mod (+ (* 255 .cse24) .cse25) 256)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_34| 1) 0) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_34|)) (= (mod .cse23 |c_ULTIMATE.start_gcd_test_~a#1|) 0) (not (= .cse25 0))))))) .cse16) (and (or (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse28 (mod .cse7 |v_ULTIMATE.start_gcd_test_~a#1_34|))) (let ((.cse26 (mod .cse28 256))) (let ((.cse27 (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse26))) (and (= (mod .cse26 |c_ULTIMATE.start_gcd_test_~a#1|) 0) (not (= .cse26 0)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_34| 1) 0) (= .cse4 (mod (+ .cse27 (* .cse28 255)) 256)) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_34|)) (not (= .cse27 0))))))) .cse1) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse30 (mod .cse12 |v_ULTIMATE.start_gcd_test_~a#1_34|))) (let ((.cse31 (+ (- 256) (mod (+ .cse30 |v_ULTIMATE.start_gcd_test_~a#1_34|) 256)))) (let ((.cse29 (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse31))) (and (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_34| 1) 0) (= .cse4 (mod (+ .cse29 .cse30 |v_ULTIMATE.start_gcd_test_~a#1_34|) 256)) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_34|)) (not (= .cse29 0)) (= (mod .cse31 |c_ULTIMATE.start_gcd_test_~a#1|) 0)))))) .cse13)) .cse0) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse32 (mod (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~a#1_34|) 256))) (and (not (= .cse32 0)) (<= |v_ULTIMATE.start_gcd_test_~a#1_34| 127) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_34|) (= (mod .cse32 |c_ULTIMATE.start_gcd_test_~a#1|) 0) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse32) 256))))) .cse16)) (= |c_ULTIMATE.start_gcd_test_~b#1| 0)) (and .cse13 .cse0 .cse15 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse33 (+ (mod (+ (mod .cse12 |v_ULTIMATE.start_gcd_test_~a#1_34|) (* 255 |v_ULTIMATE.start_gcd_test_~a#1_34|)) 256) (- 256)))) (let ((.cse34 (mod .cse33 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse33) 256)) (<= |v_ULTIMATE.start_gcd_test_~a#1_34| 127) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_34|) (= (mod (+ .cse34 (* |c_ULTIMATE.start_gcd_test_~a#1| 255)) 256) .cse9) (not (= .cse34 0))))))))))) is different from true