./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_2+newton_3_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_c74d0ce8-2f80-4fc0-ba2e-da3df923c510/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74d0ce8-2f80-4fc0-ba2e-da3df923c510/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_c74d0ce8-2f80-4fc0-ba2e-da3df923c510/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74d0ce8-2f80-4fc0-ba2e-da3df923c510/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_3_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74d0ce8-2f80-4fc0-ba2e-da3df923c510/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_c74d0ce8-2f80-4fc0-ba2e-da3df923c510/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 1a2810bb21e6de0cf080b546d334e2bc4a7723a0569c58531da7e4847e328a8e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:31:45,056 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:31:45,138 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74d0ce8-2f80-4fc0-ba2e-da3df923c510/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:31:45,143 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:31:45,144 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:31:45,171 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:31:45,172 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:31:45,172 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:31:45,173 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:31:45,174 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:31:45,175 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:31:45,175 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:31:45,176 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:31:45,176 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:31:45,177 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:31:45,178 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:31:45,178 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:31:45,179 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:31:45,180 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:31:45,180 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:31:45,181 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:31:45,182 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:31:45,183 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:31:45,183 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:31:45,184 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:31:45,185 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:31:45,185 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:31:45,186 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:31:45,186 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:31:45,187 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:31:45,187 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:31:45,188 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:31:45,188 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:31:45,189 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:31:45,189 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:31:45,190 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:31:45,190 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:31:45,190 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:31:45,191 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:31:45,191 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:31:45,191 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:31:45,192 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:31:45,192 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:31:45,193 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:31:45,193 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:31:45,193 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:31:45,193 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:31:45,194 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_c74d0ce8-2f80-4fc0-ba2e-da3df923c510/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74d0ce8-2f80-4fc0-ba2e-da3df923c510/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a2810bb21e6de0cf080b546d334e2bc4a7723a0569c58531da7e4847e328a8e [2023-11-23 21:31:45,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:31:45,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:31:45,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:31:45,630 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:31:45,630 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:31:45,632 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74d0ce8-2f80-4fc0-ba2e-da3df923c510/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/combinations/gcd_2+newton_3_2.i [2023-11-23 21:31:48,750 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:31:49,040 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:31:49,043 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74d0ce8-2f80-4fc0-ba2e-da3df923c510/sv-benchmarks/c/combinations/gcd_2+newton_3_2.i [2023-11-23 21:31:49,054 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74d0ce8-2f80-4fc0-ba2e-da3df923c510/bin/utaipan-verify-mE87zJ7Ire/data/2220d6ef7/348ec132d49a4a629c5afe2f0f99452d/FLAG0c37c90f5 [2023-11-23 21:31:49,074 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74d0ce8-2f80-4fc0-ba2e-da3df923c510/bin/utaipan-verify-mE87zJ7Ire/data/2220d6ef7/348ec132d49a4a629c5afe2f0f99452d [2023-11-23 21:31:49,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:31:49,085 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:31:49,088 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:31:49,089 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:31:49,096 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:31:49,100 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:31:49" (1/1) ... [2023-11-23 21:31:49,102 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c5118d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:49, skipping insertion in model container [2023-11-23 21:31:49,103 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:31:49" (1/1) ... [2023-11-23 21:31:49,127 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:31:49,342 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_c74d0ce8-2f80-4fc0-ba2e-da3df923c510/sv-benchmarks/c/combinations/gcd_2+newton_3_2.i[1226,1239] [2023-11-23 21:31:49,371 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_c74d0ce8-2f80-4fc0-ba2e-da3df923c510/sv-benchmarks/c/combinations/gcd_2+newton_3_2.i[2862,2875] [2023-11-23 21:31:49,373 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:31:49,384 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:31:49,398 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_c74d0ce8-2f80-4fc0-ba2e-da3df923c510/sv-benchmarks/c/combinations/gcd_2+newton_3_2.i[1226,1239] [2023-11-23 21:31:49,411 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_c74d0ce8-2f80-4fc0-ba2e-da3df923c510/sv-benchmarks/c/combinations/gcd_2+newton_3_2.i[2862,2875] [2023-11-23 21:31:49,413 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:31:49,429 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:31:49,430 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:49 WrapperNode [2023-11-23 21:31:49,430 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:31:49,431 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:31:49,432 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:31:49,432 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:31:49,439 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:49" (1/1) ... [2023-11-23 21:31:49,447 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:49" (1/1) ... [2023-11-23 21:31:49,474 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 93 [2023-11-23 21:31:49,474 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:31:49,475 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:31:49,475 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:31:49,476 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:31:49,486 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:49" (1/1) ... [2023-11-23 21:31:49,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:49" (1/1) ... [2023-11-23 21:31:49,489 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:49" (1/1) ... [2023-11-23 21:31:49,489 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:49" (1/1) ... [2023-11-23 21:31:49,497 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:49" (1/1) ... [2023-11-23 21:31:49,501 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:49" (1/1) ... [2023-11-23 21:31:49,503 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:49" (1/1) ... [2023-11-23 21:31:49,505 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:49" (1/1) ... [2023-11-23 21:31:49,508 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:31:49,515 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:31:49,515 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:31:49,515 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:31:49,516 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:49" (1/1) ... [2023-11-23 21:31:49,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:31:49,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74d0ce8-2f80-4fc0-ba2e-da3df923c510/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:31:49,562 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74d0ce8-2f80-4fc0-ba2e-da3df923c510/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:31:49,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74d0ce8-2f80-4fc0-ba2e-da3df923c510/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:31:49,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:31:49,609 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2023-11-23 21:31:49,610 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2023-11-23 21:31:49,611 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-11-23 21:31:49,611 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-11-23 21:31:49,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:31:49,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:31:49,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:31:49,709 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:31:49,712 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:31:49,949 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:31:50,085 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:31:50,085 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:31:50,087 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:31:50 BoogieIcfgContainer [2023-11-23 21:31:50,087 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:31:50,090 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:31:50,091 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:31:50,109 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:31:50,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:31:49" (1/3) ... [2023-11-23 21:31:50,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55ee848d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:31:50, skipping insertion in model container [2023-11-23 21:31:50,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:31:49" (2/3) ... [2023-11-23 21:31:50,121 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55ee848d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:31:50, skipping insertion in model container [2023-11-23 21:31:50,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:31:50" (3/3) ... [2023-11-23 21:31:50,123 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_3_2.i [2023-11-23 21:31:50,143 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:31:50,143 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-23 21:31:50,212 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:31:50,222 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;@16e9edd3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:31:50,222 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-23 21:31:50,235 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 21:31:50,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 21:31:50,246 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:50,248 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 21:31:50,251 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:31:50,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:50,259 INFO L85 PathProgramCache]: Analyzing trace with hash -377832024, now seen corresponding path program 1 times [2023-11-23 21:31:50,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:31:50,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437545237] [2023-11-23 21:31:50,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:50,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:31:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:50,638 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 21:31:50,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:31:50,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437545237] [2023-11-23 21:31:50,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437545237] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:31:50,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:31:50,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:31:50,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088124759] [2023-11-23 21:31:50,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:31:50,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:31:50,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:31:50,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:31:50,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:31:50,688 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 21:31:50,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:31:50,777 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2023-11-23 21:31:50,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:31:50,786 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 21:31:50,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:31:50,793 INFO L225 Difference]: With dead ends: 39 [2023-11-23 21:31:50,794 INFO L226 Difference]: Without dead ends: 24 [2023-11-23 21:31:50,797 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 21:31:50,801 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 1 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 21:31:50,803 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 21:31:50,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-23 21:31:50,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-23 21:31:50,852 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 21:31:50,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2023-11-23 21:31:50,854 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 6 [2023-11-23 21:31:50,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:31:50,855 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2023-11-23 21:31:50,855 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 21:31:50,855 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-11-23 21:31:50,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 21:31:50,856 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:50,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:31:50,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:31:50,857 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:31:50,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:50,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1099445991, now seen corresponding path program 1 times [2023-11-23 21:31:50,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:31:50,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625968247] [2023-11-23 21:31:50,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:50,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:31:50,879 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:31:50,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1086204688] [2023-11-23 21:31:50,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:50,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:31:50,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74d0ce8-2f80-4fc0-ba2e-da3df923c510/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:31:50,882 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74d0ce8-2f80-4fc0-ba2e-da3df923c510/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:31:50,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74d0ce8-2f80-4fc0-ba2e-da3df923c510/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:31:50,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:31:50,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 21:31:51,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:31:51,514 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 21:31:51,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:31:51,639 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 21:31:51,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:31:51,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625968247] [2023-11-23 21:31:51,640 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:31:51,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086204688] [2023-11-23 21:31:51,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086204688] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:31:51,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [879826802] [2023-11-23 21:31:51,667 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-23 21:31:51,667 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:31:51,670 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:31:51,676 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:31:51,676 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:31:53,922 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:31:54,292 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 21:31:54,292 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:31:54,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:31:54,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-11-23 21:31:54,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758234467] [2023-11-23 21:31:54,294 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 21:31:54,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:31:54,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:31:54,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:31:54,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-11-23 21:31:54,296 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 21:31:54,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:31:54,525 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2023-11-23 21:31:54,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:31:54,526 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 21:31:54,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:31:54,528 INFO L225 Difference]: With dead ends: 31 [2023-11-23 21:31:54,528 INFO L226 Difference]: Without dead ends: 26 [2023-11-23 21:31:54,530 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 21:31:54,533 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 21:31:54,534 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 21:31:54,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-23 21:31:54,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-11-23 21:31:54,546 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 21:31:54,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2023-11-23 21:31:54,549 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 7 [2023-11-23 21:31:54,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:31:54,549 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2023-11-23 21:31:54,550 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 21:31:54,550 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2023-11-23 21:31:54,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 21:31:54,551 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:31:54,552 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-11-23 21:31:54,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74d0ce8-2f80-4fc0-ba2e-da3df923c510/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:31:54,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74d0ce8-2f80-4fc0-ba2e-da3df923c510/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:31:54,772 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:31:54,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:31:54,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1975388935, now seen corresponding path program 2 times [2023-11-23 21:31:54,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:31:54,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988364637] [2023-11-23 21:31:54,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:31:54,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:31:54,787 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:31:54,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [398040277] [2023-11-23 21:31:54,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 21:31:54,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:31:54,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74d0ce8-2f80-4fc0-ba2e-da3df923c510/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:31:54,806 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74d0ce8-2f80-4fc0-ba2e-da3df923c510/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:31:54,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c74d0ce8-2f80-4fc0-ba2e-da3df923c510/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:31:54,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-23 21:31:54,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:31:54,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-23 21:31:54,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:32:06,422 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