./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 cf1a7837 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_c62fe77b-c08b-4bba-8838-2883dc9b8d85/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62fe77b-c08b-4bba-8838-2883dc9b8d85/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62fe77b-c08b-4bba-8838-2883dc9b8d85/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62fe77b-c08b-4bba-8838-2883dc9b8d85/bin/utaipan-verify-NcY6lQBIFX/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_c62fe77b-c08b-4bba-8838-2883dc9b8d85/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62fe77b-c08b-4bba-8838-2883dc9b8d85/bin/utaipan-verify-NcY6lQBIFX --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-cf1a783 [2023-11-12 00:44:37,159 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:44:37,241 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62fe77b-c08b-4bba-8838-2883dc9b8d85/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 00:44:37,251 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:44:37,252 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:44:37,296 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:44:37,297 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:44:37,297 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:44:37,298 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:44:37,303 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:44:37,304 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:44:37,305 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:44:37,305 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:44:37,307 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:44:37,308 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:44:37,308 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:44:37,308 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:44:37,309 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:44:37,309 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:44:37,310 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:44:37,310 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:44:37,311 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:44:37,312 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:44:37,313 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:44:37,313 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:44:37,314 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:44:37,314 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:44:37,315 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:44:37,315 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:44:37,315 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:44:37,317 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:44:37,317 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:44:37,317 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:44:37,318 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:44:37,318 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:44:37,318 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:44:37,318 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:44:37,319 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:44:37,319 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:44:37,319 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:44:37,320 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:44:37,320 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:44:37,320 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:44:37,320 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:44:37,321 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:44:37,321 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_c62fe77b-c08b-4bba-8838-2883dc9b8d85/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62fe77b-c08b-4bba-8838-2883dc9b8d85/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f745b16f6c25c5a9ff69a5e07a8fa4db5c31a6fdae6ec4e6a2aab4d04fe5214 [2023-11-12 00:44:37,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:44:37,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:44:37,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:44:37,628 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:44:37,629 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:44:37,631 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62fe77b-c08b-4bba-8838-2883dc9b8d85/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/combinations/gcd_2+newton_3_8.i [2023-11-12 00:44:40,812 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:44:41,025 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:44:41,026 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62fe77b-c08b-4bba-8838-2883dc9b8d85/sv-benchmarks/c/combinations/gcd_2+newton_3_8.i [2023-11-12 00:44:41,035 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62fe77b-c08b-4bba-8838-2883dc9b8d85/bin/utaipan-verify-NcY6lQBIFX/data/f9a81fc19/f1acd6ca121d45fbafad8cb09dedc540/FLAGadb7ec44f [2023-11-12 00:44:41,051 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62fe77b-c08b-4bba-8838-2883dc9b8d85/bin/utaipan-verify-NcY6lQBIFX/data/f9a81fc19/f1acd6ca121d45fbafad8cb09dedc540 [2023-11-12 00:44:41,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:44:41,056 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:44:41,057 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:44:41,058 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:44:41,063 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:44:41,064 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:44:41" (1/1) ... [2023-11-12 00:44:41,066 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27b1c368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:41, skipping insertion in model container [2023-11-12 00:44:41,066 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:44:41" (1/1) ... [2023-11-12 00:44:41,092 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:44:41,254 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_c62fe77b-c08b-4bba-8838-2883dc9b8d85/sv-benchmarks/c/combinations/gcd_2+newton_3_8.i[1226,1239] [2023-11-12 00:44:41,282 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_c62fe77b-c08b-4bba-8838-2883dc9b8d85/sv-benchmarks/c/combinations/gcd_2+newton_3_8.i[2862,2875] [2023-11-12 00:44:41,283 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:44:41,299 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:44:41,314 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_c62fe77b-c08b-4bba-8838-2883dc9b8d85/sv-benchmarks/c/combinations/gcd_2+newton_3_8.i[1226,1239] [2023-11-12 00:44:41,326 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_c62fe77b-c08b-4bba-8838-2883dc9b8d85/sv-benchmarks/c/combinations/gcd_2+newton_3_8.i[2862,2875] [2023-11-12 00:44:41,328 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:44:41,343 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:44:41,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:41 WrapperNode [2023-11-12 00:44:41,343 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:44:41,344 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:44:41,344 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:44:41,344 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:44:41,350 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:41" (1/1) ... [2023-11-12 00:44:41,358 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:41" (1/1) ... [2023-11-12 00:44:41,396 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 93 [2023-11-12 00:44:41,397 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:44:41,397 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:44:41,398 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:44:41,398 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:44:41,405 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:41" (1/1) ... [2023-11-12 00:44:41,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:41" (1/1) ... [2023-11-12 00:44:41,408 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:41" (1/1) ... [2023-11-12 00:44:41,408 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:41" (1/1) ... [2023-11-12 00:44:41,414 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:41" (1/1) ... [2023-11-12 00:44:41,418 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:41" (1/1) ... [2023-11-12 00:44:41,420 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:41" (1/1) ... [2023-11-12 00:44:41,421 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:41" (1/1) ... [2023-11-12 00:44:41,424 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:44:41,425 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:44:41,426 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:44:41,426 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:44:41,427 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:41" (1/1) ... [2023-11-12 00:44:41,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:44:41,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62fe77b-c08b-4bba-8838-2883dc9b8d85/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:44:41,470 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62fe77b-c08b-4bba-8838-2883dc9b8d85/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:44:41,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62fe77b-c08b-4bba-8838-2883dc9b8d85/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:44:41,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:44:41,509 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2023-11-12 00:44:41,510 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2023-11-12 00:44:41,510 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-11-12 00:44:41,510 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-11-12 00:44:41,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:44:41,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:44:41,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:44:41,577 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:44:41,579 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:44:41,773 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:44:41,869 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:44:41,884 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 00:44:41,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:44:41 BoogieIcfgContainer [2023-11-12 00:44:41,887 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:44:41,890 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:44:41,891 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:44:41,899 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:44:41,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:44:41" (1/3) ... [2023-11-12 00:44:41,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d4fda8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:44:41, skipping insertion in model container [2023-11-12 00:44:41,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:44:41" (2/3) ... [2023-11-12 00:44:41,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d4fda8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:44:41, skipping insertion in model container [2023-11-12 00:44:41,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:44:41" (3/3) ... [2023-11-12 00:44:41,903 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_3_8.i [2023-11-12 00:44:41,926 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:44:41,927 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 00:44:41,982 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:44:41,988 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;@5fc61dbd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:44:41,988 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-12 00:44:41,992 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) [2023-11-12 00:44:42,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 00:44:42,000 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:44:42,001 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 00:44:42,002 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:44:42,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:44:42,007 INFO L85 PathProgramCache]: Analyzing trace with hash -291944571, now seen corresponding path program 1 times [2023-11-12 00:44:42,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:44:42,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744807311] [2023-11-12 00:44:42,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:42,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:44:42,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:42,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:44:42,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:44:42,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744807311] [2023-11-12 00:44:42,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744807311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:44:42,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:44:42,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:44:42,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533439374] [2023-11-12 00:44:42,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:44:42,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:44:42,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:44:42,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:44:42,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:44:42,667 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) [2023-11-12 00:44:42,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:44:42,771 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2023-11-12 00:44:42,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:44:42,774 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 [2023-11-12 00:44:42,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:44:42,781 INFO L225 Difference]: With dead ends: 39 [2023-11-12 00:44:42,782 INFO L226 Difference]: Without dead ends: 24 [2023-11-12 00:44:42,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:44:42,792 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 1 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:44:42,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 67 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:44:42,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-12 00:44:42,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-12 00:44:42,836 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) [2023-11-12 00:44:42,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2023-11-12 00:44:42,840 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 6 [2023-11-12 00:44:42,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:44:42,841 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2023-11-12 00:44:42,841 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) [2023-11-12 00:44:42,841 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-11-12 00:44:42,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-12 00:44:42,843 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:44:42,843 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:44:42,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:44:42,844 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:44:42,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:44:42,845 INFO L85 PathProgramCache]: Analyzing trace with hash -533010262, now seen corresponding path program 1 times [2023-11-12 00:44:42,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:44:42,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99480172] [2023-11-12 00:44:42,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:42,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:44:42,884 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:44:42,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1395181456] [2023-11-12 00:44:42,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:42,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:44:42,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62fe77b-c08b-4bba-8838-2883dc9b8d85/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:44:42,893 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62fe77b-c08b-4bba-8838-2883dc9b8d85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:44:42,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62fe77b-c08b-4bba-8838-2883dc9b8d85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:44:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:44:42,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-12 00:44:43,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:44:43,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:44:43,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:44:43,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:44:43,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:44:43,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99480172] [2023-11-12 00:44:43,605 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:44:43,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395181456] [2023-11-12 00:44:43,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395181456] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:44:43,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2128636789] [2023-11-12 00:44:43,626 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-12 00:44:43,627 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:44:43,630 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:44:43,637 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:44:43,637 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 00:44:46,614 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 00:44:46,920 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '164#(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 [2023-11-12 00:44:46,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 00:44:46,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 00:44:46,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-12 00:44:46,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120135530] [2023-11-12 00:44:46,923 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 00:44:46,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 00:44:46,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:44:46,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 00:44:46,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-11-12 00:44:46,929 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 10 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:44:47,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:44:47,103 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2023-11-12 00:44:47,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 00:44:47,103 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-12 00:44:47,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:44:47,105 INFO L225 Difference]: With dead ends: 31 [2023-11-12 00:44:47,105 INFO L226 Difference]: Without dead ends: 26 [2023-11-12 00:44:47,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2023-11-12 00:44:47,108 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:44:47,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 150 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:44:47,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-12 00:44:47,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-11-12 00:44:47,123 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) [2023-11-12 00:44:47,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2023-11-12 00:44:47,126 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 7 [2023-11-12 00:44:47,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:44:47,126 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2023-11-12 00:44:47,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:44:47,127 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2023-11-12 00:44:47,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-12 00:44:47,128 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:44:47,128 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-11-12 00:44:47,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62fe77b-c08b-4bba-8838-2883dc9b8d85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 00:44:47,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62fe77b-c08b-4bba-8838-2883dc9b8d85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:44:47,334 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:44:47,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:44:47,334 INFO L85 PathProgramCache]: Analyzing trace with hash 847992842, now seen corresponding path program 2 times [2023-11-12 00:44:47,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:44:47,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630761710] [2023-11-12 00:44:47,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:44:47,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:44:47,346 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:44:47,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [985833413] [2023-11-12 00:44:47,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 00:44:47,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:44:47,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62fe77b-c08b-4bba-8838-2883dc9b8d85/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:44:47,348 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62fe77b-c08b-4bba-8838-2883dc9b8d85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:44:47,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c62fe77b-c08b-4bba-8838-2883dc9b8d85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:44:47,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-12 00:44:47,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 00:44:47,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-12 00:44:47,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:45:24,516 WARN L854 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_main1_~y~0#1| 127) (let ((.cse4 (= |c_ULTIMATE.start_gcd_test_~b#1| 0)) (.cse6 (* |c_ULTIMATE.start_main1_~y~0#1| 255))) (or (and (not (= |c_ULTIMATE.start_main1_~y~0#1| 0)) (<= 0 |c_ULTIMATE.start_main1_~y~0#1|) (or (and (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (and (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_33|) (exists ((v_z_4 Int)) (and (exists ((v_y_4 Int)) (let ((.cse0 (+ (* 256 v_y_4) (* 255 v_z_4)))) (and (<= 0 .cse0) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_33| .cse0) 0) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse1 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| |c_ULTIMATE.start_main1_~y~0#1|))) (and (= .cse0 (mod .cse1 256)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|) (<= (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse1) 256) 127))))))) (<= v_z_4 255) (<= 128 v_z_4))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (and (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_33|) (exists ((v_z_4 Int)) (and (exists ((v_y_4 Int)) (let ((.cse2 (+ (* 256 v_y_4) (* 255 v_z_4)))) (and (<= 0 .cse2) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_33| .cse2) 0) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse3 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| |c_ULTIMATE.start_main1_~y~0#1|))) (and (= .cse2 (mod .cse3 256)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|) (<= 128 (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse3) 256)))))))) (<= v_z_4 255) (<= 128 v_z_4)))))) .cse4) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (and (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_33|) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse5 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| |c_ULTIMATE.start_main1_~y~0#1|))) (and (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (not (= .cse5 0)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_33| (+ (- 256) (mod (+ .cse6 .cse5) 256))) 256)) (<= (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse5) 256) 127)))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse7 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| |c_ULTIMATE.start_main1_~y~0#1|))) (and (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_33| (mod .cse7 256)) 256) |c_ULTIMATE.start_gcd_test_~b#1|) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|) (<= 128 (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse7) 256))))) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_33|))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse9 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse10 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| (mod .cse9 256)))) (let ((.cse8 (mod .cse10 256))) (and (<= .cse8 127) (= .cse8 |c_ULTIMATE.start_gcd_test_~b#1|) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|) (<= 128 (mod (+ (* 255 .cse9) .cse10) 256)) (<= (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse9) 256) 127)))))) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_33|))) (and (or (exists ((v_y_6 Int) (|v_ULTIMATE.start_gcd_test_~a#1_33| Int) (|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse13 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse11 (* 256 v_y_6)) (.cse12 (mod (+ .cse6 .cse13) 256))) (and (<= (+ 384 .cse11) .cse12) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_33|) (<= .cse12 (+ 511 .cse11)) (not (= .cse13 0)) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_33| (+ (- 256) .cse12)) 0) (<= (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse13) 256) 127))))) (exists ((v_y_6 Int) (|v_ULTIMATE.start_gcd_test_~a#1_33| Int) (|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse16 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| |c_ULTIMATE.start_main1_~y~0#1|))) (let ((.cse14 (* 256 v_y_6)) (.cse15 (mod (+ .cse6 .cse16) 256))) (and (<= (+ 384 .cse14) .cse15) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_33|) (<= .cse15 (+ 511 .cse14)) (<= 128 (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse16) 256)) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_33| (+ (- 256) .cse15)) 0)))))) .cse4) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (and (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_33|) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse17 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| |c_ULTIMATE.start_main1_~y~0#1|))) (and (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (<= 128 (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse17) 256)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_33| (+ (- 256) (mod (+ .cse6 .cse17) 256))) 256))))))))) (and (<= (+ |c_ULTIMATE.start_main1_~y~0#1| 1) 0) (let ((.cse18 (mod .cse6 256))) (or (and (let ((.cse24 (+ |c_ULTIMATE.start_gcd_test_~b#1| 256)) (.cse21 (+ .cse18 (- 256)))) (or (and .cse4 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int) (|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse20 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse21))) (let ((.cse19 (mod .cse20 256))) (and (<= .cse18 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_33|)) (not (= .cse19 0)) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_33| .cse19) 0) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|) (<= (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse20) 256) 127)))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse23 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse21))) (let ((.cse25 (mod .cse23 256))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse22 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| .cse25))) (and (<= .cse18 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_33|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_33| 1) 0) (= (mod (+ .cse22 (* 255 .cse23)) 256) .cse24) (not (= .cse22 0))))) (not (= .cse25 0)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|) (<= (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse23) 256) 127))))) (and .cse4 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int) (|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse27 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse21))) (let ((.cse26 (mod .cse27 256))) (and (<= .cse18 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_33|)) (not (= .cse26 0)) (<= 128 (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse27) 256)) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_33| .cse26) 0) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|)))))) (and (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (and (<= .cse18 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_33|)) (exists ((v_y_1 Int) (|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse30 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse21))) (let ((.cse29 (* 256 v_y_1)) (.cse28 (mod (+ .cse6 .cse30) 256))) (and (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (<= .cse28 (+ .cse29 511)) (<= (+ .cse29 384) .cse28) (not (= .cse30 0)) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_33| (+ .cse28 (- 256))) 0) (<= (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse30) 256) 127))))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (and (exists ((v_y_1 Int) (|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse33 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse21))) (let ((.cse32 (* 256 v_y_1)) (.cse31 (mod (+ .cse6 .cse33) 256))) (and (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (<= .cse31 (+ .cse32 511)) (<= (+ .cse32 384) .cse31) (not (= .cse33 0)) (<= 128 (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse33) 256)) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_33| (+ .cse31 (- 256))) 0))))) (<= .cse18 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_33|))))) .cse4) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse35 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse21))) (let ((.cse36 (mod .cse35 256))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse34 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| .cse36))) (and (<= .cse18 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_33|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_33| 1) 0) (= (mod (+ .cse34 (* 255 .cse35)) 256) .cse24) (not (= .cse34 0))))) (not (= .cse36 0)) (<= 128 (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse35) 256)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse38 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse21))) (let ((.cse37 (mod .cse38 256))) (and (not (= .cse37 0)) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (and (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_33| .cse37) 256)))) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|) (<= (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse38) 256) 127))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (and (<= .cse18 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_33|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_33| 1) 0) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse40 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse21))) (let ((.cse39 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| (+ (mod (+ .cse6 .cse40) 256) (- 256))))) (and (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (not (= .cse39 0)) (not (= .cse40 0)) (<= 128 (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse40) 256)) (= (mod (+ .cse6 .cse39 .cse40) 256) .cse24))))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (and (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse41 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse21))) (and (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (not (= .cse41 0)) (<= 128 (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse41) 256)) (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_33| (+ (mod (+ .cse6 .cse41) 256) (- 256))) 256) |c_ULTIMATE.start_gcd_test_~b#1|)))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (and (<= .cse18 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_33|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_33| 1) 0) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse43 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse21))) (let ((.cse42 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| (+ (mod (+ .cse6 .cse43) 256) (- 256))))) (and (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (not (= .cse42 0)) (not (= .cse43 0)) (= (mod (+ .cse6 .cse42 .cse43) 256) .cse24) (<= (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse43) 256) 127))))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse45 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse21))) (let ((.cse44 (mod .cse45 256))) (and (not (= .cse44 0)) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (and (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_33| .cse44) 256)))) (<= 128 (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse45) 256)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse46 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse21))) (and (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (not (= .cse46 0)) (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_33| (+ (mod (+ .cse6 .cse46) 256) (- 256))) 256) |c_ULTIMATE.start_gcd_test_~b#1|) (<= (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse46) 256) 127)))) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|))))) (<= 128 .cse18)) (and (not (= .cse18 0)) (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse47 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse18))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (and (<= .cse18 |v_ULTIMATE.start_gcd_test_~a#1_33|) (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_33| (+ (- 256) (mod (+ .cse47 |c_ULTIMATE.start_main1_~y~0#1|) 256))) 256) |c_ULTIMATE.start_gcd_test_~b#1|))) (not (= .cse47 0)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (<= (mod (+ .cse47 .cse6) 256) 127)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse48 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse18))) (and (not (= .cse48 0)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (<= (mod (+ .cse48 |c_ULTIMATE.start_main1_~y~0#1| (mod |v_ULTIMATE.start_gcd_test_~a#1_33| (+ (- 256) (mod (+ .cse48 |c_ULTIMATE.start_main1_~y~0#1|) 256)))) 256) 127)) (<= (mod (+ .cse48 .cse6) 256) 127)))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int) (|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse49 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse18))) (and (<= 128 (mod (* .cse49 255) 256)) (<= .cse18 |v_ULTIMATE.start_gcd_test_~a#1_33|) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_33| (mod .cse49 256)) 0) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|) (<= (mod (+ .cse49 .cse6) 256) 127)))) .cse4) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse50 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse18))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse51 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| (+ (- 256) (mod (+ .cse50 |c_ULTIMATE.start_main1_~y~0#1|) 256))))) (and (<= .cse18 |v_ULTIMATE.start_gcd_test_~a#1_33|) (<= 128 (mod (+ .cse50 |c_ULTIMATE.start_main1_~y~0#1| .cse51) 256)) (= (mod .cse51 256) |c_ULTIMATE.start_gcd_test_~b#1|)))) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (<= 128 (mod (+ .cse50 .cse6) 256))))) (and .cse4 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int) (|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse52 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse18))) (and (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (<= .cse18 |v_ULTIMATE.start_gcd_test_~a#1_33|) (<= 128 (mod (+ .cse52 .cse6) 256)) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_33| (+ (- 256) (mod (+ .cse52 |c_ULTIMATE.start_main1_~y~0#1|) 256))) 0))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse53 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse18))) (and (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (<= 128 (mod (+ .cse53 .cse6) 256)) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (<= 128 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_33| (+ (- 256) (mod (+ .cse53 |c_ULTIMATE.start_main1_~y~0#1|) 256))) 256)))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse55 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse18))) (let ((.cse54 (mod .cse55 256))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (and (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_33| .cse54) 256) |c_ULTIMATE.start_gcd_test_~b#1|) (<= .cse18 |v_ULTIMATE.start_gcd_test_~a#1_33|))) (not (= .cse54 0)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|) (<= (mod (+ .cse55 .cse6) 256) 127))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse56 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse18))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (and (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_33| (mod .cse56 256)) 256) |c_ULTIMATE.start_gcd_test_~b#1|) (<= .cse18 |v_ULTIMATE.start_gcd_test_~a#1_33|))) (<= 128 (mod (+ .cse56 .cse6) 256)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|)))) (and .cse4 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int) (|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse57 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse18))) (and (<= .cse18 |v_ULTIMATE.start_gcd_test_~a#1_33|) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_33| (mod .cse57 256)) 0) (<= 128 (mod (+ .cse57 .cse6) 256)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|))))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int) (|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse58 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse18))) (and (not (= .cse58 0)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (<= .cse18 |v_ULTIMATE.start_gcd_test_~a#1_33|) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_33| (+ (- 256) (mod (+ .cse58 |c_ULTIMATE.start_main1_~y~0#1|) 256))) 0) (<= (mod (+ .cse58 .cse6) 256) 127)))) .cse4)) (<= .cse18 127)))))))) is different from false