./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_2+newton_2_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe93655-9863-4639-9f17-0d0e493813d5/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe93655-9863-4639-9f17-0d0e493813d5/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_bfe93655-9863-4639-9f17-0d0e493813d5/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe93655-9863-4639-9f17-0d0e493813d5/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_2_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe93655-9863-4639-9f17-0d0e493813d5/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_bfe93655-9863-4639-9f17-0d0e493813d5/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 edf451b08ccf28b9358a6fa7c10128ea1b9a8f09b01361f9cd588dc4a31f271a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:18:44,405 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:18:44,524 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe93655-9863-4639-9f17-0d0e493813d5/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:18:44,537 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:18:44,537 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:18:44,587 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:18:44,588 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:18:44,589 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:18:44,590 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:18:44,595 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:18:44,595 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:18:44,597 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:18:44,597 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:18:44,599 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:18:44,599 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:18:44,600 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:18:44,600 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:18:44,600 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:18:44,601 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:18:44,601 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:18:44,602 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:18:44,602 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:18:44,604 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:18:44,604 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:18:44,605 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:18:44,605 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:18:44,605 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:18:44,606 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:18:44,606 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:18:44,607 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:18:44,608 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:18:44,608 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:18:44,609 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:18:44,609 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:18:44,609 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:18:44,619 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:18:44,620 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:18:44,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:18:44,620 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:18:44,620 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:18:44,621 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:18:44,621 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:18:44,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:18:44,622 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:18:44,622 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:18:44,622 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:18:44,623 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:18:44,623 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_bfe93655-9863-4639-9f17-0d0e493813d5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe93655-9863-4639-9f17-0d0e493813d5/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edf451b08ccf28b9358a6fa7c10128ea1b9a8f09b01361f9cd588dc4a31f271a [2023-11-23 21:18:44,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:18:44,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:18:44,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:18:44,952 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:18:44,953 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:18:44,955 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe93655-9863-4639-9f17-0d0e493813d5/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/combinations/gcd_2+newton_2_2.i [2023-11-23 21:18:47,977 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:18:48,263 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:18:48,264 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe93655-9863-4639-9f17-0d0e493813d5/sv-benchmarks/c/combinations/gcd_2+newton_2_2.i [2023-11-23 21:18:48,275 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe93655-9863-4639-9f17-0d0e493813d5/bin/utaipan-verify-mE87zJ7Ire/data/771380a26/e68a1821e98f47b6a23053f4819dd597/FLAG803da3f9e [2023-11-23 21:18:48,292 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe93655-9863-4639-9f17-0d0e493813d5/bin/utaipan-verify-mE87zJ7Ire/data/771380a26/e68a1821e98f47b6a23053f4819dd597 [2023-11-23 21:18:48,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:18:48,300 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:18:48,304 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:18:48,304 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:18:48,311 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:18:48,311 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:18:48" (1/1) ... [2023-11-23 21:18:48,313 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@139c96f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:48, skipping insertion in model container [2023-11-23 21:18:48,313 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:18:48" (1/1) ... [2023-11-23 21:18:48,375 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:18:48,605 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_bfe93655-9863-4639-9f17-0d0e493813d5/sv-benchmarks/c/combinations/gcd_2+newton_2_2.i[1226,1239] [2023-11-23 21:18:48,647 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_bfe93655-9863-4639-9f17-0d0e493813d5/sv-benchmarks/c/combinations/gcd_2+newton_2_2.i[2841,2854] [2023-11-23 21:18:48,649 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:18:48,662 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:18:48,683 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_bfe93655-9863-4639-9f17-0d0e493813d5/sv-benchmarks/c/combinations/gcd_2+newton_2_2.i[1226,1239] [2023-11-23 21:18:48,709 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_bfe93655-9863-4639-9f17-0d0e493813d5/sv-benchmarks/c/combinations/gcd_2+newton_2_2.i[2841,2854] [2023-11-23 21:18:48,711 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:18:48,732 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:18:48,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:48 WrapperNode [2023-11-23 21:18:48,733 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:18:48,734 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:18:48,734 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:18:48,735 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:18:48,744 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:48" (1/1) ... [2023-11-23 21:18:48,754 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:48" (1/1) ... [2023-11-23 21:18:48,781 INFO L138 Inliner]: procedures = 27, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 88 [2023-11-23 21:18:48,782 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:18:48,782 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:18:48,783 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:18:48,783 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:18:48,793 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:48" (1/1) ... [2023-11-23 21:18:48,794 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:48" (1/1) ... [2023-11-23 21:18:48,797 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:48" (1/1) ... [2023-11-23 21:18:48,797 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:48" (1/1) ... [2023-11-23 21:18:48,804 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:48" (1/1) ... [2023-11-23 21:18:48,807 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:48" (1/1) ... [2023-11-23 21:18:48,809 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:48" (1/1) ... [2023-11-23 21:18:48,810 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:48" (1/1) ... [2023-11-23 21:18:48,813 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:18:48,814 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:18:48,815 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:18:48,815 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:18:48,816 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:48" (1/1) ... [2023-11-23 21:18:48,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:18:48,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe93655-9863-4639-9f17-0d0e493813d5/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:18:48,872 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe93655-9863-4639-9f17-0d0e493813d5/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:18:48,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe93655-9863-4639-9f17-0d0e493813d5/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:18:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:18:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2023-11-23 21:18:48,906 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2023-11-23 21:18:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-11-23 21:18:48,907 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-11-23 21:18:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:18:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:18:48,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:18:48,990 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:18:48,992 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:18:49,170 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:18:49,283 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:18:49,284 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:18:49,286 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:18:49 BoogieIcfgContainer [2023-11-23 21:18:49,286 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:18:49,290 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:18:49,290 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:18:49,324 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:18:49,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:18:48" (1/3) ... [2023-11-23 21:18:49,325 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a47b65d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:18:49, skipping insertion in model container [2023-11-23 21:18:49,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:48" (2/3) ... [2023-11-23 21:18:49,326 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a47b65d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:18:49, skipping insertion in model container [2023-11-23 21:18:49,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:18:49" (3/3) ... [2023-11-23 21:18:49,327 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_2_2.i [2023-11-23 21:18:49,367 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:18:49,368 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-23 21:18:49,430 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:18:49,437 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;@6677b5b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:18:49,438 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-23 21:18:49,442 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 16 states have (on average 1.4375) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 21:18:49,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 21:18:49,450 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:49,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 21:18:49,452 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:18:49,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:49,459 INFO L85 PathProgramCache]: Analyzing trace with hash -584909265, now seen corresponding path program 1 times [2023-11-23 21:18:49,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:49,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746302359] [2023-11-23 21:18:49,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:49,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:49,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:49,864 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 21:18:49,865 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:18:49,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746302359] [2023-11-23 21:18:49,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746302359] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:18:49,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:18:49,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:18:49,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038182866] [2023-11-23 21:18:49,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:18:49,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:18:49,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:18:49,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:18:49,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:18:49,920 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.4375) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 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 21:18:50,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:18:50,026 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2023-11-23 21:18:50,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:18:50,029 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 21:18:50,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:18:50,036 INFO L225 Difference]: With dead ends: 36 [2023-11-23 21:18:50,037 INFO L226 Difference]: Without dead ends: 21 [2023-11-23 21:18:50,040 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 21:18:50,044 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 52 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 21:18:50,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 52 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:18:50,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-23 21:18:50,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-11-23 21:18:50,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 21:18:50,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2023-11-23 21:18:50,086 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 6 [2023-11-23 21:18:50,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:18:50,087 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2023-11-23 21:18:50,087 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 21:18:50,087 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2023-11-23 21:18:50,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 21:18:50,089 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:50,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:18:50,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:18:50,090 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:18:50,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:50,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1018725074, now seen corresponding path program 1 times [2023-11-23 21:18:50,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:50,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943434521] [2023-11-23 21:18:50,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:50,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:50,109 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:18:50,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1631294639] [2023-11-23 21:18:50,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:50,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:18:50,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe93655-9863-4639-9f17-0d0e493813d5/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:18:50,114 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe93655-9863-4639-9f17-0d0e493813d5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:18:50,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe93655-9863-4639-9f17-0d0e493813d5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:18:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:50,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 21:18:50,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:18:50,745 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 21:18:50,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:18:50,875 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 21:18:50,875 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:18:50,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943434521] [2023-11-23 21:18:50,876 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:18:50,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631294639] [2023-11-23 21:18:50,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631294639] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:18:50,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [172681993] [2023-11-23 21:18:50,913 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-23 21:18:50,913 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:18:50,918 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:18:50,925 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:18:50,926 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:18:52,969 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:18:53,306 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '150#(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 21:18:53,307 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:18:53,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 21:18:53,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-11-23 21:18:53,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720034608] [2023-11-23 21:18:53,308 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 21:18:53,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:18:53,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:18:53,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:18:53,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-11-23 21:18:53,311 INFO L87 Difference]: Start difference. First operand 21 states and 23 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 21:18:53,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:18:53,597 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2023-11-23 21:18:53,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:18:53,598 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 21:18:53,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:18:53,599 INFO L225 Difference]: With dead ends: 28 [2023-11-23 21:18:53,600 INFO L226 Difference]: Without dead ends: 23 [2023-11-23 21:18:53,602 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 21:18:53,604 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 3 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:18:53,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 83 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:18:53,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-23 21:18:53,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-23 21:18:53,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 21:18:53,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2023-11-23 21:18:53,620 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 7 [2023-11-23 21:18:53,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:18:53,621 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2023-11-23 21:18:53,621 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 21:18:53,621 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2023-11-23 21:18:53,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 21:18:53,622 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:53,623 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-11-23 21:18:53,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe93655-9863-4639-9f17-0d0e493813d5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:18:53,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe93655-9863-4639-9f17-0d0e493813d5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:18:53,845 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:18:53,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:53,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1867278002, now seen corresponding path program 2 times [2023-11-23 21:18:53,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:53,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359157329] [2023-11-23 21:18:53,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:53,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:53,858 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:18:53,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2014130989] [2023-11-23 21:18:53,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 21:18:53,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:18:53,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe93655-9863-4639-9f17-0d0e493813d5/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:18:53,860 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe93655-9863-4639-9f17-0d0e493813d5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:18:53,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bfe93655-9863-4639-9f17-0d0e493813d5/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:18:53,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-23 21:18:53,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:18:53,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-23 21:18:53,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:19:05,371 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