./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_2+newton_3_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174748c8-e84e-4ed7-bb76-14a1812d5a54/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174748c8-e84e-4ed7-bb76-14a1812d5a54/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174748c8-e84e-4ed7-bb76-14a1812d5a54/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174748c8-e84e-4ed7-bb76-14a1812d5a54/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_3_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174748c8-e84e-4ed7-bb76-14a1812d5a54/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174748c8-e84e-4ed7-bb76-14a1812d5a54/bin/utaipan-verify-mE87zJ7Ire --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 8f745b16f6c25c5a9ff69a5e07a8fa4db5c31a6fdae6ec4e6a2aab4d04fe5214 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:16:45,783 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:16:45,862 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174748c8-e84e-4ed7-bb76-14a1812d5a54/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:16:45,869 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:16:45,870 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:16:45,904 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:16:45,905 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:16:45,906 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:16:45,907 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:16:45,908 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:16:45,909 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:16:45,910 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:16:45,910 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:16:45,911 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:16:45,911 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:16:45,912 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:16:45,913 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:16:45,913 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:16:45,914 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:16:45,914 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:16:45,915 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:16:45,916 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:16:45,917 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:16:45,918 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:16:45,918 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:16:45,919 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:16:45,919 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:16:45,920 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:16:45,921 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:16:45,921 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:16:45,922 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:16:45,922 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:16:45,923 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:16:45,924 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:16:45,924 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:16:45,925 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:16:45,925 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:16:45,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:16:45,926 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:16:45,927 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:16:45,927 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:16:45,928 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:16:45,928 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:16:45,928 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:16:45,928 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:16:45,929 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:16:45,929 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:16:45,929 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_174748c8-e84e-4ed7-bb76-14a1812d5a54/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174748c8-e84e-4ed7-bb76-14a1812d5a54/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f745b16f6c25c5a9ff69a5e07a8fa4db5c31a6fdae6ec4e6a2aab4d04fe5214 [2023-11-23 21:16:46,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:16:46,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:16:46,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:16:46,264 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:16:46,264 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:16:46,266 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174748c8-e84e-4ed7-bb76-14a1812d5a54/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/combinations/gcd_2+newton_3_8.i [2023-11-23 21:16:49,449 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:16:49,789 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:16:49,790 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174748c8-e84e-4ed7-bb76-14a1812d5a54/sv-benchmarks/c/combinations/gcd_2+newton_3_8.i [2023-11-23 21:16:49,802 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174748c8-e84e-4ed7-bb76-14a1812d5a54/bin/utaipan-verify-mE87zJ7Ire/data/612ab70eb/3aa45a9e410a4dd6a25d299aa30d8a55/FLAGc78ac692c [2023-11-23 21:16:49,825 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174748c8-e84e-4ed7-bb76-14a1812d5a54/bin/utaipan-verify-mE87zJ7Ire/data/612ab70eb/3aa45a9e410a4dd6a25d299aa30d8a55 [2023-11-23 21:16:49,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:16:49,837 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:16:49,841 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:16:49,841 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:16:49,847 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:16:49,848 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:16:49" (1/1) ... [2023-11-23 21:16:49,849 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@159c899a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:49, skipping insertion in model container [2023-11-23 21:16:49,849 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:16:49" (1/1) ... [2023-11-23 21:16:49,881 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:16:50,082 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_174748c8-e84e-4ed7-bb76-14a1812d5a54/sv-benchmarks/c/combinations/gcd_2+newton_3_8.i[1226,1239] [2023-11-23 21:16:50,120 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_174748c8-e84e-4ed7-bb76-14a1812d5a54/sv-benchmarks/c/combinations/gcd_2+newton_3_8.i[2862,2875] [2023-11-23 21:16:50,123 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:16:50,145 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:16:50,173 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_174748c8-e84e-4ed7-bb76-14a1812d5a54/sv-benchmarks/c/combinations/gcd_2+newton_3_8.i[1226,1239] [2023-11-23 21:16:50,188 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_174748c8-e84e-4ed7-bb76-14a1812d5a54/sv-benchmarks/c/combinations/gcd_2+newton_3_8.i[2862,2875] [2023-11-23 21:16:50,189 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:16:50,224 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:16:50,225 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:50 WrapperNode [2023-11-23 21:16:50,225 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:16:50,228 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:16:50,230 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:16:50,230 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:16:50,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:50" (1/1) ... [2023-11-23 21:16:50,258 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:50" (1/1) ... [2023-11-23 21:16:50,287 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 93 [2023-11-23 21:16:50,287 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:16:50,288 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:16:50,289 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:16:50,289 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:16:50,301 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:50" (1/1) ... [2023-11-23 21:16:50,302 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:50" (1/1) ... [2023-11-23 21:16:50,305 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:50" (1/1) ... [2023-11-23 21:16:50,305 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:50" (1/1) ... [2023-11-23 21:16:50,314 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:50" (1/1) ... [2023-11-23 21:16:50,318 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:50" (1/1) ... [2023-11-23 21:16:50,320 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:50" (1/1) ... [2023-11-23 21:16:50,322 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:50" (1/1) ... [2023-11-23 21:16:50,325 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:16:50,326 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:16:50,326 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:16:50,327 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:16:50,328 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:50" (1/1) ... [2023-11-23 21:16:50,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:16:50,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174748c8-e84e-4ed7-bb76-14a1812d5a54/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:16:50,371 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174748c8-e84e-4ed7-bb76-14a1812d5a54/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:16:50,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174748c8-e84e-4ed7-bb76-14a1812d5a54/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:16:50,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:16:50,410 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2023-11-23 21:16:50,410 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2023-11-23 21:16:50,411 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-11-23 21:16:50,411 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-11-23 21:16:50,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:16:50,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:16:50,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:16:50,498 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:16:50,501 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:16:50,724 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:16:50,842 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:16:50,843 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:16:50,845 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:16:50 BoogieIcfgContainer [2023-11-23 21:16:50,845 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:16:50,848 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:16:50,849 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:16:50,852 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:16:50,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:16:49" (1/3) ... [2023-11-23 21:16:50,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c5a1ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:16:50, skipping insertion in model container [2023-11-23 21:16:50,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:16:50" (2/3) ... [2023-11-23 21:16:50,855 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c5a1ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:16:50, skipping insertion in model container [2023-11-23 21:16:50,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:16:50" (3/3) ... [2023-11-23 21:16:50,857 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_3_8.i [2023-11-23 21:16:50,879 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:16:50,879 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-23 21:16:50,942 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:16:50,950 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;@73780ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:16:50,950 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-23 21:16:50,954 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 17 states have (on average 1.411764705882353) internal successors, (24), 19 states have internal predecessors, (24), 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) [2023-11-23 21:16:50,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 21:16:50,964 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:50,965 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 21:16:50,967 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:16:50,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:50,975 INFO L85 PathProgramCache]: Analyzing trace with hash -377832024, now seen corresponding path program 1 times [2023-11-23 21:16:50,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:50,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351401817] [2023-11-23 21:16:50,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:50,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:51,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:16:51,426 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:51,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351401817] [2023-11-23 21:16:51,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351401817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:51,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:51,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:16:51,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245314366] [2023-11-23 21:16:51,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:51,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:16:51,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:51,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:16:51,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:16:51,487 INFO L87 Difference]: Start difference. First operand has 28 states, 17 states have (on average 1.411764705882353) internal successors, (24), 19 states have internal predecessors, (24), 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 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2023-11-23 21:16:51,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:51,602 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2023-11-23 21:16:51,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:16:51,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 [2023-11-23 21:16:51,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:51,615 INFO L225 Difference]: With dead ends: 39 [2023-11-23 21:16:51,615 INFO L226 Difference]: Without dead ends: 24 [2023-11-23 21:16:51,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:16:51,631 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 1 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:51,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 67 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:16:51,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-23 21:16:51,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-23 21:16:51,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 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) [2023-11-23 21:16:51,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2023-11-23 21:16:51,684 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 6 [2023-11-23 21:16:51,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:51,684 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2023-11-23 21:16:51,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2023-11-23 21:16:51,685 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-11-23 21:16:51,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 21:16:51,687 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:51,687 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:51,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:16:51,688 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:16:51,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:51,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1099445991, now seen corresponding path program 1 times [2023-11-23 21:16:51,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:51,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985625430] [2023-11-23 21:16:51,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:51,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:51,708 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:16:51,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2102897314] [2023-11-23 21:16:51,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:51,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:16:51,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174748c8-e84e-4ed7-bb76-14a1812d5a54/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:16:51,711 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174748c8-e84e-4ed7-bb76-14a1812d5a54/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:16:51,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174748c8-e84e-4ed7-bb76-14a1812d5a54/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:16:51,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:51,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 21:16:51,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:16:52,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:16:52,469 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:16:52,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:16:52,575 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:52,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985625430] [2023-11-23 21:16:52,575 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:16:52,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102897314] [2023-11-23 21:16:52,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102897314] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:16:52,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [513605982] [2023-11-23 21:16:52,612 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-23 21:16:52,612 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:16:52,616 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:16:52,622 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:16:52,622 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:16:54,954 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:16:55,351 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '163#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main1_~x~0#1| 127) (<= (+ |ULTIMATE.start_main1_~y~0#1| 1) |ULTIMATE.start_main1_~g~0#1|) (<= 1 |ULTIMATE.start_main1_~y~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ |ULTIMATE.start_main1_~x~0#1| 128)) (<= |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))' at error location [2023-11-23 21:16:55,351 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:16:55,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:16:55,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-11-23 21:16:55,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689826325] [2023-11-23 21:16:55,354 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 21:16:55,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:16:55,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:55,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:16:55,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-11-23 21:16:55,357 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 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) [2023-11-23 21:16:55,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:16:55,619 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2023-11-23 21:16:55,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:16:55,620 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 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 7 [2023-11-23 21:16:55,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:16:55,622 INFO L225 Difference]: With dead ends: 31 [2023-11-23 21:16:55,622 INFO L226 Difference]: Without dead ends: 26 [2023-11-23 21:16:55,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-11-23 21:16:55,624 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:16:55,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 132 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:16:55,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-23 21:16:55,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-11-23 21:16:55,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 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) [2023-11-23 21:16:55,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2023-11-23 21:16:55,634 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 7 [2023-11-23 21:16:55,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:16:55,634 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2023-11-23 21:16:55,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 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) [2023-11-23 21:16:55,635 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2023-11-23 21:16:55,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 21:16:55,636 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:16:55,636 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-11-23 21:16:55,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174748c8-e84e-4ed7-bb76-14a1812d5a54/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:16:55,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174748c8-e84e-4ed7-bb76-14a1812d5a54/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:16:55,858 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:16:55,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:16:55,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1975388935, now seen corresponding path program 2 times [2023-11-23 21:16:55,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:16:55,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056584843] [2023-11-23 21:16:55,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:16:55,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:16:55,872 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:16:55,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [954988902] [2023-11-23 21:16:55,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 21:16:55,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:16:55,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174748c8-e84e-4ed7-bb76-14a1812d5a54/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:16:55,874 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174748c8-e84e-4ed7-bb76-14a1812d5a54/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:16:55,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_174748c8-e84e-4ed7-bb76-14a1812d5a54/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:16:55,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-23 21:16:55,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:16:55,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-23 21:16:55,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:17:07,514 WARN L854 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_main1_~y~0#1| 127) (let ((.cse7 (= |c_ULTIMATE.start_gcd_test_~b#1| 0)) (.cse4 (+ |c_ULTIMATE.start_gcd_test_~a#1| 256)) (.cse1 (* |c_ULTIMATE.start_main1_~y~0#1| 255))) (or (and (<= (+ |c_ULTIMATE.start_main1_~y~0#1| 1) 0) (let ((.cse0 (mod .cse1 256))) (or (and (not (= .cse0 0)) (<= .cse0 127) (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_30| Int)) (let ((.cse2 (mod |v_ULTIMATE.start_gcd_test_~a#1_30| .cse0))) (let ((.cse3 (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse2) 256))) (and (<= 128 (mod (+ .cse1 .cse2) 256)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_30| 1) 0) (<= .cse3 .cse4) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_31| Int)) (and (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_31| (+ (- 256) .cse3)) 256)) (<= .cse0 |v_ULTIMATE.start_gcd_test_~a#1_31|))))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_30| Int)) (let ((.cse5 (mod |v_ULTIMATE.start_gcd_test_~a#1_30| .cse0))) (let ((.cse6 (mod .cse5 256))) (and (<= 128 (mod (+ .cse1 .cse5) 256)) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_31| Int)) (and (<= .cse0 |v_ULTIMATE.start_gcd_test_~a#1_31|) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_31| .cse6) 256)))) (<= .cse6 |c_ULTIMATE.start_gcd_test_~a#1|) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_30|))))) (and .cse7 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_31| Int) (|v_ULTIMATE.start_gcd_test_~a#1_30| Int)) (let ((.cse9 (mod |v_ULTIMATE.start_gcd_test_~a#1_30| .cse0))) (let ((.cse8 (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse9) 256))) (and (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_30| 1) 0) (<= .cse0 |v_ULTIMATE.start_gcd_test_~a#1_31|) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_31| (+ (- 256) .cse8)) 0) (not (= .cse9 0)) (<= .cse8 .cse4) (<= (mod (+ .cse1 .cse9) 256) 127)))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_30| Int)) (let ((.cse11 (mod |v_ULTIMATE.start_gcd_test_~a#1_30| .cse0))) (let ((.cse10 (mod .cse11 256))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_31| Int)) (and (<= .cse0 |v_ULTIMATE.start_gcd_test_~a#1_31|) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_31| .cse10) 256)))) (<= .cse10 |c_ULTIMATE.start_gcd_test_~a#1|) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_30|) (<= (mod (+ .cse1 .cse11) 256) 127) (not (= .cse10 0)))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_30| Int)) (let ((.cse12 (mod |v_ULTIMATE.start_gcd_test_~a#1_30| .cse0))) (let ((.cse13 (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse12) 256))) (and (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_30| 1) 0) (not (= .cse12 0)) (<= .cse13 .cse4) (<= (mod (+ .cse1 .cse12) 256) 127) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_31| Int)) (and (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_31| (+ (- 256) .cse13)) 256)) (<= .cse0 |v_ULTIMATE.start_gcd_test_~a#1_31|))))))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_31| Int) (|v_ULTIMATE.start_gcd_test_~a#1_30| Int)) (let ((.cse15 (mod |v_ULTIMATE.start_gcd_test_~a#1_30| .cse0))) (let ((.cse14 (mod .cse15 256))) (and (<= .cse14 |c_ULTIMATE.start_gcd_test_~a#1|) (<= .cse0 |v_ULTIMATE.start_gcd_test_~a#1_31|) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_30|) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_31| .cse14) 0) (<= (mod (+ .cse1 .cse15) 256) 127) (not (= .cse14 0)))))) .cse7) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_31| Int) (|v_ULTIMATE.start_gcd_test_~a#1_30| Int)) (let ((.cse16 (mod |v_ULTIMATE.start_gcd_test_~a#1_30| .cse0))) (let ((.cse17 (mod .cse16 256))) (and (<= 128 (mod (+ .cse1 .cse16) 256)) (<= .cse17 |c_ULTIMATE.start_gcd_test_~a#1|) (<= .cse0 |v_ULTIMATE.start_gcd_test_~a#1_31|) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_30|) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_31| .cse17) 0))))) .cse7) (and .cse7 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_31| Int) (|v_ULTIMATE.start_gcd_test_~a#1_30| Int)) (let ((.cse18 (mod |v_ULTIMATE.start_gcd_test_~a#1_30| .cse0))) (let ((.cse19 (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse18) 256))) (and (<= 128 (mod (+ .cse1 .cse18) 256)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_30| 1) 0) (<= .cse0 |v_ULTIMATE.start_gcd_test_~a#1_31|) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_31| (+ (- 256) .cse19)) 0) (<= .cse19 .cse4)))))))) (and (let ((.cse23 (+ |c_ULTIMATE.start_gcd_test_~b#1| 256)) (.cse24 (+ .cse0 (- 256)))) (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_31| Int) (|v_ULTIMATE.start_gcd_test_~a#1_30| Int)) (let ((.cse22 (mod |v_ULTIMATE.start_gcd_test_~a#1_30| .cse24))) (let ((.cse21 (mod .cse22 256))) (let ((.cse20 (mod |v_ULTIMATE.start_gcd_test_~a#1_31| .cse21))) (and (not (= .cse20 0)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_30|) (<= .cse0 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_31|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_31| 1) 0) (not (= .cse21 0)) (<= .cse21 |c_ULTIMATE.start_gcd_test_~a#1|) (= (mod (+ .cse20 (* 255 .cse22)) 256) .cse23)))))) (and (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_31| Int)) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_30| Int)) (let ((.cse26 (mod |v_ULTIMATE.start_gcd_test_~a#1_30| .cse24))) (let ((.cse25 (mod (+ .cse1 .cse26) 256))) (and (<= .cse25 .cse4) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_30| 1) 0) (<= (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse26) 256) 127) (not (= .cse26 0)) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_31| (+ (- 256) .cse25)) 0))))) (<= .cse0 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_31|)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_31| Int)) (and (<= .cse0 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_31|)) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_30| Int)) (let ((.cse28 (mod |v_ULTIMATE.start_gcd_test_~a#1_30| .cse24))) (let ((.cse27 (mod (+ .cse1 .cse28) 256))) (and (<= .cse27 .cse4) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_30| 1) 0) (not (= .cse28 0)) (<= 128 (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse28) 256)) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_31| (+ (- 256) .cse27)) 0))))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_31| Int)) (and (<= .cse0 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_31|)) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_30| Int)) (let ((.cse29 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_30| .cse24) 256))) (and (= (mod |v_ULTIMATE.start_gcd_test_~a#1_31| .cse29) 0) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_30|) (not (= .cse29 0)) (<= .cse29 |c_ULTIMATE.start_gcd_test_~a#1|))))))) .cse7) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_30| Int)) (let ((.cse31 (mod |v_ULTIMATE.start_gcd_test_~a#1_30| .cse24))) (let ((.cse30 (mod (+ .cse1 .cse31) 256))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_31| Int)) (and (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_31| (+ (- 256) .cse30)) 256)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_31|))) (<= .cse30 .cse4) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_30| 1) 0) (<= (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse31) 256) 127) (not (= .cse31 0)))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_31| Int)) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_30| Int)) (let ((.cse34 (mod |v_ULTIMATE.start_gcd_test_~a#1_30| .cse24))) (let ((.cse33 (mod (+ .cse1 .cse34) 256))) (let ((.cse32 (mod |v_ULTIMATE.start_gcd_test_~a#1_31| (+ (- 256) .cse33)))) (and (not (= .cse32 0)) (<= .cse33 .cse4) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_30| 1) 0) (not (= .cse34 0)) (<= 128 (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse34) 256)) (= (mod (+ .cse1 .cse34 .cse32) 256) .cse23)))))) (<= .cse0 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_31|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_31| 1) 0))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_30| Int)) (let ((.cse35 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_30| .cse24) 256))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_31| Int)) (and (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_31|) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_31| .cse35) 256)))) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_30|) (not (= .cse35 0)) (<= .cse35 |c_ULTIMATE.start_gcd_test_~a#1|)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_31| Int)) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_30| Int)) (let ((.cse38 (mod |v_ULTIMATE.start_gcd_test_~a#1_30| .cse24))) (let ((.cse37 (mod (+ .cse1 .cse38) 256))) (let ((.cse36 (mod |v_ULTIMATE.start_gcd_test_~a#1_31| (+ (- 256) .cse37)))) (and (not (= .cse36 0)) (<= .cse37 .cse4) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_30| 1) 0) (<= (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse38) 256) 127) (not (= .cse38 0)) (= (mod (+ .cse1 .cse38 .cse36) 256) .cse23)))))) (<= .cse0 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_31|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_31| 1) 0))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_30| Int)) (let ((.cse40 (mod |v_ULTIMATE.start_gcd_test_~a#1_30| .cse24))) (let ((.cse39 (mod (+ .cse1 .cse40) 256))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_31| Int)) (and (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_31| (+ (- 256) .cse39)) 256)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_31|))) (<= .cse39 .cse4) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_30| 1) 0) (not (= .cse40 0)) (<= 128 (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse40) 256)))))))) (<= 128 .cse0))))) (and (not (= |c_ULTIMATE.start_main1_~y~0#1| 0)) (<= 0 |c_ULTIMATE.start_main1_~y~0#1|) (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_31| Int)) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_30| Int)) (let ((.cse41 (mod |v_ULTIMATE.start_gcd_test_~a#1_30| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse42 (mod (+ .cse1 .cse41) 256))) (and (<= (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse41) 256) 127) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_30| 1) 0) (not (= .cse41 0)) (<= .cse42 .cse4) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_31| (+ (- 256) .cse42)) 256)))))) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_31|))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_31| Int)) (and (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_31|) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_30| Int)) (let ((.cse43 (mod |v_ULTIMATE.start_gcd_test_~a#1_30| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse44 (mod (+ .cse1 .cse43) 256))) (and (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_30| 1) 0) (<= 128 (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse43) 256)) (<= .cse44 .cse4) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_31| (+ (- 256) .cse44)) 256)))))))) (and .cse7 (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_31| Int)) (and (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_31|) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_30| Int)) (let ((.cse46 (mod |v_ULTIMATE.start_gcd_test_~a#1_30| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse45 (mod .cse46 256))) (and (<= .cse45 |c_ULTIMATE.start_gcd_test_~a#1|) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_30|) (<= 128 (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse46) 256)) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_31| .cse45) 0))))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_31| Int)) (and (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_31|) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_30| Int)) (let ((.cse47 (mod |v_ULTIMATE.start_gcd_test_~a#1_30| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse48 (mod .cse47 256))) (and (<= (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse47) 256) 127) (<= .cse48 |c_ULTIMATE.start_gcd_test_~a#1|) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_30|) (not (= .cse48 0)) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_31| .cse48) 0))))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_31| Int)) (and (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_31|) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_30| Int)) (let ((.cse50 (mod |v_ULTIMATE.start_gcd_test_~a#1_30| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse49 (mod (+ .cse1 .cse50) 256))) (and (= (mod |v_ULTIMATE.start_gcd_test_~a#1_31| (+ (- 256) .cse49)) 0) (<= (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse50) 256) 127) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_30| 1) 0) (not (= .cse50 0)) (<= .cse49 .cse4))))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_31| Int)) (and (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_31|) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_30| Int)) (let ((.cse52 (mod |v_ULTIMATE.start_gcd_test_~a#1_30| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse51 (mod (+ .cse1 .cse52) 256))) (and (= (mod |v_ULTIMATE.start_gcd_test_~a#1_31| (+ (- 256) .cse51)) 0) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_30| 1) 0) (<= 128 (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse52) 256)) (<= .cse51 .cse4))))))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_31| Int)) (and (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_31|) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_30| Int)) (let ((.cse53 (mod |v_ULTIMATE.start_gcd_test_~a#1_30| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse54 (mod .cse53 256))) (and (<= (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse53) 256) 127) (<= .cse54 |c_ULTIMATE.start_gcd_test_~a#1|) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_30|) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_31| .cse54) 256)) (not (= .cse54 0)))))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_31| Int)) (and (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_31|) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_30| Int)) (let ((.cse56 (mod |v_ULTIMATE.start_gcd_test_~a#1_30| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse55 (mod .cse56 256))) (and (<= .cse55 |c_ULTIMATE.start_gcd_test_~a#1|) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_30|) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_31| .cse55) 256)) (<= 128 (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse56) 256))))))))))))) is different from false