./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_2+newton_3_7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_878ec5de-db62-4449-a72a-604aa6339428/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878ec5de-db62-4449-a72a-604aa6339428/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878ec5de-db62-4449-a72a-604aa6339428/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878ec5de-db62-4449-a72a-604aa6339428/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_2+newton_3_7.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878ec5de-db62-4449-a72a-604aa6339428/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878ec5de-db62-4449-a72a-604aa6339428/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 803cbc2ab2fb54f2ccf794a1cf55b1df2243f22f996d0e59d0f49967facf7958 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:17:43,916 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:17:43,992 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878ec5de-db62-4449-a72a-604aa6339428/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 04:17:43,998 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:17:43,999 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:17:44,028 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:17:44,029 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:17:44,029 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:17:44,030 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:17:44,031 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:17:44,032 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:17:44,033 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:17:44,033 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:17:44,034 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:17:44,035 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:17:44,035 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:17:44,036 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:17:44,037 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:17:44,037 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:17:44,038 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:17:44,039 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:17:44,040 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:17:44,041 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:17:44,042 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:17:44,042 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:17:44,043 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:17:44,044 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:17:44,044 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:17:44,045 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:17:44,046 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:17:44,046 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:17:44,047 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:17:44,047 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:17:44,048 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:17:44,048 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:17:44,049 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:17:44,049 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:17:44,050 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:17:44,050 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:17:44,050 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:17:44,051 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:17:44,051 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:17:44,052 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:17:44,052 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:17:44,053 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:17:44,053 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_878ec5de-db62-4449-a72a-604aa6339428/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878ec5de-db62-4449-a72a-604aa6339428/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 803cbc2ab2fb54f2ccf794a1cf55b1df2243f22f996d0e59d0f49967facf7958 [2023-11-19 04:17:44,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:17:44,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:17:44,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:17:44,397 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:17:44,398 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:17:44,401 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878ec5de-db62-4449-a72a-604aa6339428/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/combinations/gcd_2+newton_3_7.i [2023-11-19 04:17:47,576 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:17:47,827 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:17:47,828 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878ec5de-db62-4449-a72a-604aa6339428/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i [2023-11-19 04:17:47,838 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878ec5de-db62-4449-a72a-604aa6339428/bin/utaipan-verify-t7M7D8N6sZ/data/4caa89d36/f697160c18d44bd68252c76517290c40/FLAG55e5d815c [2023-11-19 04:17:47,861 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878ec5de-db62-4449-a72a-604aa6339428/bin/utaipan-verify-t7M7D8N6sZ/data/4caa89d36/f697160c18d44bd68252c76517290c40 [2023-11-19 04:17:47,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:17:47,870 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:17:47,872 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:17:47,872 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:17:47,877 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:17:47,878 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:17:47" (1/1) ... [2023-11-19 04:17:47,879 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@773cb72c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:47, skipping insertion in model container [2023-11-19 04:17:47,880 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:17:47" (1/1) ... [2023-11-19 04:17:47,914 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:17:48,056 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_878ec5de-db62-4449-a72a-604aa6339428/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i[1226,1239] [2023-11-19 04:17:48,094 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_878ec5de-db62-4449-a72a-604aa6339428/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i[2862,2875] [2023-11-19 04:17:48,096 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:17:48,107 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:17:48,119 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_878ec5de-db62-4449-a72a-604aa6339428/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i[1226,1239] [2023-11-19 04:17:48,132 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_878ec5de-db62-4449-a72a-604aa6339428/sv-benchmarks/c/combinations/gcd_2+newton_3_7.i[2862,2875] [2023-11-19 04:17:48,133 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:17:48,148 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:17:48,149 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:48 WrapperNode [2023-11-19 04:17:48,149 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:17:48,151 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:17:48,151 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:17:48,151 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:17:48,159 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:48" (1/1) ... [2023-11-19 04:17:48,170 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:48" (1/1) ... [2023-11-19 04:17:48,200 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 93 [2023-11-19 04:17:48,200 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:17:48,201 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:17:48,201 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:17:48,202 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:17:48,215 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:48" (1/1) ... [2023-11-19 04:17:48,215 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:48" (1/1) ... [2023-11-19 04:17:48,218 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:48" (1/1) ... [2023-11-19 04:17:48,218 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:48" (1/1) ... [2023-11-19 04:17:48,224 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:48" (1/1) ... [2023-11-19 04:17:48,228 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:48" (1/1) ... [2023-11-19 04:17:48,229 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:48" (1/1) ... [2023-11-19 04:17:48,231 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:48" (1/1) ... [2023-11-19 04:17:48,234 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:17:48,235 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:17:48,235 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:17:48,235 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:17:48,236 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:48" (1/1) ... [2023-11-19 04:17:48,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:17:48,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878ec5de-db62-4449-a72a-604aa6339428/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:17:48,282 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878ec5de-db62-4449-a72a-604aa6339428/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:17:48,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878ec5de-db62-4449-a72a-604aa6339428/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:17:48,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:17:48,325 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2023-11-19 04:17:48,325 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2023-11-19 04:17:48,327 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-11-19 04:17:48,328 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-11-19 04:17:48,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:17:48,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:17:48,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:17:48,422 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:17:48,423 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:17:48,605 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:17:48,713 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:17:48,713 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:17:48,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:17:48 BoogieIcfgContainer [2023-11-19 04:17:48,718 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:17:48,744 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:17:48,744 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:17:48,747 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:17:48,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:17:47" (1/3) ... [2023-11-19 04:17:48,748 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7b48f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:17:48, skipping insertion in model container [2023-11-19 04:17:48,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:48" (2/3) ... [2023-11-19 04:17:48,748 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7b48f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:17:48, skipping insertion in model container [2023-11-19 04:17:48,749 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:17:48" (3/3) ... [2023-11-19 04:17:48,750 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_3_7.i [2023-11-19 04:17:48,777 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:17:48,777 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 04:17:48,822 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:17:48,829 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;@568e7310, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:17:48,829 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-19 04:17:48,833 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) [2023-11-19 04:17:48,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:17:48,840 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:17:48,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 04:17:48,841 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:17:48,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:17:48,847 INFO L85 PathProgramCache]: Analyzing trace with hash -291944571, now seen corresponding path program 1 times [2023-11-19 04:17:48,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:17:48,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712338065] [2023-11-19 04:17:48,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:17:48,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:17:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:17:49,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:17:49,361 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:17:49,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712338065] [2023-11-19 04:17:49,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712338065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:17:49,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:17:49,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:17:49,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376941861] [2023-11-19 04:17:49,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:17:49,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:17:49,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:17:49,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:17:49,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:17:49,406 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) [2023-11-19 04:17:49,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:17:49,490 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2023-11-19 04:17:49,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:17:49,493 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 [2023-11-19 04:17:49,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:17:49,501 INFO L225 Difference]: With dead ends: 39 [2023-11-19 04:17:49,502 INFO L226 Difference]: Without dead ends: 24 [2023-11-19 04:17:49,505 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 [2023-11-19 04:17:49,509 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 1 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2023-11-19 04:17:49,510 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] [2023-11-19 04:17:49,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-19 04:17:49,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-19 04:17:49,552 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) [2023-11-19 04:17:49,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2023-11-19 04:17:49,555 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 6 [2023-11-19 04:17:49,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:17:49,555 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2023-11-19 04:17:49,556 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) [2023-11-19 04:17:49,556 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-11-19 04:17:49,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:17:49,557 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:17:49,558 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:17:49,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:17:49,558 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:17:49,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:17:49,559 INFO L85 PathProgramCache]: Analyzing trace with hash -533010262, now seen corresponding path program 1 times [2023-11-19 04:17:49,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:17:49,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878323952] [2023-11-19 04:17:49,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:17:49,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:17:49,578 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:17:49,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [431712506] [2023-11-19 04:17:49,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:17:49,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:17:49,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878ec5de-db62-4449-a72a-604aa6339428/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:17:49,582 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878ec5de-db62-4449-a72a-604aa6339428/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:17:49,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878ec5de-db62-4449-a72a-604aa6339428/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:17:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:17:49,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 04:17:49,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:17:50,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:17:50,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:17:50,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:17:50,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:17:50,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878323952] [2023-11-19 04:17:50,412 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 04:17:50,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431712506] [2023-11-19 04:17:50,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431712506] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:17:50,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [765094132] [2023-11-19 04:17:50,450 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-11-19 04:17:50,450 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:17:50,454 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:17:50,460 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:17:50,461 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:17:53,434 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:17:53,725 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '163#(and (<= 1 |#StackHeapBarrier|) (<= |ULTIMATE.start_main1_~x~0#1| 127) (<= (+ |ULTIMATE.start_main1_~y~0#1| 1) |ULTIMATE.start_main1_~g~0#1|) (<= 1 |ULTIMATE.start_main1_~y~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ |ULTIMATE.start_main1_~x~0#1| 128)) (<= |ULTIMATE.start_gcd_test_#res#1| 127) (= |ULTIMATE.start_main1_~g~0#1| |ULTIMATE.start_gcd_test_#res#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0))' at error location [2023-11-19 04:17:53,725 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 04:17:53,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 04:17:53,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-11-19 04:17:53,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133772627] [2023-11-19 04:17:53,727 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 04:17:53,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 04:17:53,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:17:53,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 04:17:53,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-11-19 04:17:53,734 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:17:53,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:17:53,920 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2023-11-19 04:17:53,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 04:17:53,920 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 [2023-11-19 04:17:53,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:17:53,921 INFO L225 Difference]: With dead ends: 31 [2023-11-19 04:17:53,921 INFO L226 Difference]: Without dead ends: 26 [2023-11-19 04:17:53,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-11-19 04:17:53,924 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:17:53,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 132 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:17:53,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-19 04:17:53,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-11-19 04:17:53,931 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) [2023-11-19 04:17:53,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2023-11-19 04:17:53,932 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 7 [2023-11-19 04:17:53,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:17:53,932 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2023-11-19 04:17:53,933 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) [2023-11-19 04:17:53,933 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2023-11-19 04:17:53,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 04:17:53,934 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:17:53,934 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-11-19 04:17:53,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878ec5de-db62-4449-a72a-604aa6339428/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:17:54,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878ec5de-db62-4449-a72a-604aa6339428/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:17:54,156 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:17:54,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:17:54,156 INFO L85 PathProgramCache]: Analyzing trace with hash 847992842, now seen corresponding path program 2 times [2023-11-19 04:17:54,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:17:54,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423351140] [2023-11-19 04:17:54,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:17:54,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:17:54,176 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 04:17:54,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [367899771] [2023-11-19 04:17:54,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 04:17:54,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:17:54,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878ec5de-db62-4449-a72a-604aa6339428/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:17:54,183 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878ec5de-db62-4449-a72a-604aa6339428/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:17:54,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_878ec5de-db62-4449-a72a-604aa6339428/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:17:54,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-19 04:17:54,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:17:54,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-19 04:17:54,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:18:05,890 WARN L854 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_main1_~y~0#1| 127) (not (= |c_ULTIMATE.start_gcd_test_~a#1| 0)) (let ((.cse40 (+ |c_ULTIMATE.start_gcd_test_~b#1| 256)) (.cse11 (* |c_ULTIMATE.start_gcd_test_~a#1| 255))) (let ((.cse62 (mod |c_ULTIMATE.start_gcd_test_~a#1| 256)) (.cse63 (mod .cse11 256)) (.cse16 (<= 0 |c_ULTIMATE.start_gcd_test_~a#1|)) (.cse51 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse71 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse70 (mod .cse71 256))) (and (<= 128 .cse70) (<= 128 (mod (+ .cse11 .cse71) 256)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|) (= .cse70 .cse40)))))) (.cse52 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse69 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse68 (mod .cse69 256))) (and (<= 128 .cse68) (<= (mod (+ .cse11 .cse69) 256) 127) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|) (= .cse68 .cse40)))))) (.cse55 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse66 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse67 (mod .cse66 256))) (and (<= 128 (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse66) 256)) (<= 128 .cse67) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|) (= .cse67 .cse40)))))) (.cse56 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse65 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse64 (mod .cse65 256))) (and (<= 128 .cse64) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|) (= .cse64 .cse40) (<= (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse65) 256) 127)))))) (.cse18 (<= (+ |c_ULTIMATE.start_gcd_test_~a#1| 1) 0))) (let ((.cse6 (and (or .cse55 .cse56) .cse18)) (.cse17 (and .cse16 (or .cse51 .cse52))) (.cse13 (<= .cse63 127)) (.cse9 (<= 128 .cse63)) (.cse24 (<= 128 .cse62)) (.cse8 (= |c_ULTIMATE.start_gcd_test_~b#1| 0)) (.cse19 (<= .cse62 127)) (.cse1 (+ |c_ULTIMATE.start_gcd_test_~a#1| 256)) (.cse2 (* |c_ULTIMATE.start_main1_~y~0#1| 255))) (or (and (not (= |c_ULTIMATE.start_main1_~y~0#1| 0)) (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse0 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| |c_ULTIMATE.start_main1_~y~0#1|))) (and (= |c_ULTIMATE.start_gcd_test_~a#1| (mod .cse0 256)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|) (<= (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse0) 256) 127)))) (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 (= .cse1 (mod (+ .cse2 .cse3) 256)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (not (= .cse3 0)) (<= (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse3) 256) 127)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse4 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| |c_ULTIMATE.start_main1_~y~0#1|))) (and (= |c_ULTIMATE.start_gcd_test_~a#1| (mod .cse4 256)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|) (<= 128 (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse4) 256))))) (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 (= .cse1 (mod (+ .cse2 .cse5) 256)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (<= 128 (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse5) 256)))))) (let ((.cse7 (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|) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|) 0))))) (or .cse6 (and (or (and .cse7 .cse8 .cse9) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse12 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse10 (mod .cse12 256))) (and (= .cse10 |c_ULTIMATE.start_gcd_test_~b#1|) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_33|) (<= (mod (+ .cse11 .cse12) 256) 127) (<= .cse10 127))))) (and .cse13 .cse7 .cse8) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse15 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse14 (mod .cse15 256))) (and (= .cse14 |c_ULTIMATE.start_gcd_test_~b#1|) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_33|) (<= 128 (mod (+ .cse11 .cse15) 256)) (<= .cse14 127)))))) .cse16) .cse17 (and .cse18 (or (and .cse7 .cse8 .cse19) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse21 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse20 (mod .cse21 256))) (and (= .cse20 |c_ULTIMATE.start_gcd_test_~b#1|) (<= 128 (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse21) 256)) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_33|) (<= .cse20 127))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse23 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse22 (mod .cse23 256))) (and (= .cse22 |c_ULTIMATE.start_gcd_test_~b#1|) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_33|) (<= .cse22 127) (<= (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse23) 256) 127))))) (and .cse24 .cse7 .cse8))))) (<= 0 |c_ULTIMATE.start_main1_~y~0#1|)) (and (let ((.cse27 (mod .cse2 256))) (or (and (let ((.cse28 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (and (= (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|) 0) (<= .cse27 |v_ULTIMATE.start_gcd_test_~a#1_33|))))) (or .cse6 (and (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse26 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse25 (mod .cse26 256))) (and (= .cse25 |c_ULTIMATE.start_gcd_test_~b#1|) (<= 128 (mod (+ .cse11 .cse26) 256)) (<= .cse25 127) (<= .cse27 |v_ULTIMATE.start_gcd_test_~a#1_33|))))) (and .cse28 .cse8 .cse9) (and .cse13 .cse28 .cse8) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse30 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse29 (mod .cse30 256))) (and (= .cse29 |c_ULTIMATE.start_gcd_test_~b#1|) (<= (mod (+ .cse11 .cse30) 256) 127) (<= .cse29 127) (<= .cse27 |v_ULTIMATE.start_gcd_test_~a#1_33|)))))) .cse16) .cse17 (and (or (and .cse28 .cse8 .cse19) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse32 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse31 (mod .cse32 256))) (and (= .cse31 |c_ULTIMATE.start_gcd_test_~b#1|) (<= 128 (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse32) 256)) (<= .cse31 127) (<= .cse27 |v_ULTIMATE.start_gcd_test_~a#1_33|))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse34 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse33 (mod .cse34 256))) (and (= .cse33 |c_ULTIMATE.start_gcd_test_~b#1|) (<= .cse33 127) (<= .cse27 |v_ULTIMATE.start_gcd_test_~a#1_33|) (<= (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse34) 256) 127))))) (and .cse24 .cse28 .cse8)) .cse18))) (not (= .cse27 0)) (<= .cse27 127) (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse35 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse27))) (and (not (= .cse35 0)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (= .cse1 (mod (+ .cse35 |c_ULTIMATE.start_main1_~y~0#1|) 256)) (<= (mod (+ .cse35 .cse2) 256) 127)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse36 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse27))) (and (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (= .cse1 (mod (+ .cse36 |c_ULTIMATE.start_main1_~y~0#1|) 256)) (<= 128 (mod (+ .cse36 .cse2) 256))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse37 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse27))) (and (= (mod .cse37 256) |c_ULTIMATE.start_gcd_test_~a#1|) (<= 128 (mod (+ .cse37 .cse2) 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| .cse27))) (and (= (mod .cse38 256) |c_ULTIMATE.start_gcd_test_~a#1|) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|) (<= (mod (+ .cse38 .cse2) 256) 127)))))) (and (let ((.cse43 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (and (<= .cse27 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_33|)) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|) 0))))) (or (and .cse16 (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse39 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (<= .cse27 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_33|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_33| 1) 0) (= (mod (+ .cse11 .cse39) 256) .cse40) (<= (mod .cse39 256) 127) (not (= .cse39 0))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse42 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse41 (mod .cse42 256))) (and (= .cse41 |c_ULTIMATE.start_gcd_test_~b#1|) (<= 128 (mod (+ .cse11 .cse42) 256)) (<= .cse41 127) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|))))) (and .cse13 .cse8 .cse43) (and .cse8 .cse9 .cse43) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse45 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse44 (mod .cse45 256))) (and (= .cse44 |c_ULTIMATE.start_gcd_test_~b#1|) (<= (mod (+ .cse11 .cse45) 256) 127) (<= .cse44 127) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|))))))) (and .cse18 (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse46 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (<= .cse27 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_33|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_33| 1) 0) (= (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse46) 256) .cse40) (<= (mod .cse46 256) 127) (not (= .cse46 0))))) (and .cse24 .cse8 .cse43) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse48 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse47 (mod .cse48 256))) (and (= .cse47 |c_ULTIMATE.start_gcd_test_~b#1|) (<= 128 (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse48) 256)) (<= .cse47 127) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|))))) (and .cse8 .cse43 .cse19) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse50 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse49 (mod .cse50 256))) (and (= .cse49 |c_ULTIMATE.start_gcd_test_~b#1|) (<= .cse49 127) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|) (<= (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse50) 256) 127))))))) (and .cse16 (or .cse51 .cse52 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse53 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (<= .cse27 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_33|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_33| 1) 0) (= (mod (+ .cse11 .cse53) 256) .cse40) (<= 128 (mod .cse53 256))))))) (and (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse54 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (<= .cse27 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_33|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_33| 1) 0) (= (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse54) 256) .cse40) (<= 128 (mod .cse54 256))))) .cse55 .cse56) .cse18))) (let ((.cse58 (+ .cse27 (- 256)))) (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse57 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse58))) (and (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod .cse57 256)) (<= (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse57) 256) 127)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse59 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse58))) (and (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (= .cse1 (mod (+ .cse2 .cse59) 256)) (not (= .cse59 0)) (<= (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse59) 256) 127)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse60 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse58))) (and (<= 128 (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse60) 256)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod .cse60 256))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse61 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse58))) (and (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (= .cse1 (mod (+ .cse2 .cse61) 256)) (not (= .cse61 0)) (<= 128 (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse61) 256))))))) (<= 128 .cse27)))) (<= (+ |c_ULTIMATE.start_main1_~y~0#1| 1) 0))))))) is different from false [2023-11-19 04:18:08,533 WARN L876 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_main1_~y~0#1| 127) (not (= |c_ULTIMATE.start_gcd_test_~a#1| 0)) (let ((.cse40 (+ |c_ULTIMATE.start_gcd_test_~b#1| 256)) (.cse11 (* |c_ULTIMATE.start_gcd_test_~a#1| 255))) (let ((.cse62 (mod |c_ULTIMATE.start_gcd_test_~a#1| 256)) (.cse63 (mod .cse11 256)) (.cse16 (<= 0 |c_ULTIMATE.start_gcd_test_~a#1|)) (.cse51 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse71 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse70 (mod .cse71 256))) (and (<= 128 .cse70) (<= 128 (mod (+ .cse11 .cse71) 256)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|) (= .cse70 .cse40)))))) (.cse52 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse69 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse68 (mod .cse69 256))) (and (<= 128 .cse68) (<= (mod (+ .cse11 .cse69) 256) 127) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|) (= .cse68 .cse40)))))) (.cse55 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse66 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse67 (mod .cse66 256))) (and (<= 128 (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse66) 256)) (<= 128 .cse67) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|) (= .cse67 .cse40)))))) (.cse56 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse65 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse64 (mod .cse65 256))) (and (<= 128 .cse64) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|) (= .cse64 .cse40) (<= (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse65) 256) 127)))))) (.cse18 (<= (+ |c_ULTIMATE.start_gcd_test_~a#1| 1) 0))) (let ((.cse6 (and (or .cse55 .cse56) .cse18)) (.cse17 (and .cse16 (or .cse51 .cse52))) (.cse13 (<= .cse63 127)) (.cse9 (<= 128 .cse63)) (.cse24 (<= 128 .cse62)) (.cse8 (= |c_ULTIMATE.start_gcd_test_~b#1| 0)) (.cse19 (<= .cse62 127)) (.cse1 (+ |c_ULTIMATE.start_gcd_test_~a#1| 256)) (.cse2 (* |c_ULTIMATE.start_main1_~y~0#1| 255))) (or (and (not (= |c_ULTIMATE.start_main1_~y~0#1| 0)) (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse0 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| |c_ULTIMATE.start_main1_~y~0#1|))) (and (= |c_ULTIMATE.start_gcd_test_~a#1| (mod .cse0 256)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|) (<= (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse0) 256) 127)))) (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 (= .cse1 (mod (+ .cse2 .cse3) 256)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (not (= .cse3 0)) (<= (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse3) 256) 127)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse4 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| |c_ULTIMATE.start_main1_~y~0#1|))) (and (= |c_ULTIMATE.start_gcd_test_~a#1| (mod .cse4 256)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|) (<= 128 (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse4) 256))))) (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 (= .cse1 (mod (+ .cse2 .cse5) 256)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (<= 128 (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse5) 256)))))) (let ((.cse7 (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|) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|) 0))))) (or .cse6 (and (or (and .cse7 .cse8 .cse9) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse12 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse10 (mod .cse12 256))) (and (= .cse10 |c_ULTIMATE.start_gcd_test_~b#1|) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_33|) (<= (mod (+ .cse11 .cse12) 256) 127) (<= .cse10 127))))) (and .cse13 .cse7 .cse8) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse15 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse14 (mod .cse15 256))) (and (= .cse14 |c_ULTIMATE.start_gcd_test_~b#1|) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_33|) (<= 128 (mod (+ .cse11 .cse15) 256)) (<= .cse14 127)))))) .cse16) .cse17 (and .cse18 (or (and .cse7 .cse8 .cse19) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse21 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse20 (mod .cse21 256))) (and (= .cse20 |c_ULTIMATE.start_gcd_test_~b#1|) (<= 128 (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse21) 256)) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_33|) (<= .cse20 127))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse23 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse22 (mod .cse23 256))) (and (= .cse22 |c_ULTIMATE.start_gcd_test_~b#1|) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_33|) (<= .cse22 127) (<= (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse23) 256) 127))))) (and .cse24 .cse7 .cse8))))) (<= 0 |c_ULTIMATE.start_main1_~y~0#1|)) (and (let ((.cse27 (mod .cse2 256))) (or (and (let ((.cse28 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (and (= (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|) 0) (<= .cse27 |v_ULTIMATE.start_gcd_test_~a#1_33|))))) (or .cse6 (and (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse26 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse25 (mod .cse26 256))) (and (= .cse25 |c_ULTIMATE.start_gcd_test_~b#1|) (<= 128 (mod (+ .cse11 .cse26) 256)) (<= .cse25 127) (<= .cse27 |v_ULTIMATE.start_gcd_test_~a#1_33|))))) (and .cse28 .cse8 .cse9) (and .cse13 .cse28 .cse8) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse30 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse29 (mod .cse30 256))) (and (= .cse29 |c_ULTIMATE.start_gcd_test_~b#1|) (<= (mod (+ .cse11 .cse30) 256) 127) (<= .cse29 127) (<= .cse27 |v_ULTIMATE.start_gcd_test_~a#1_33|)))))) .cse16) .cse17 (and (or (and .cse28 .cse8 .cse19) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse32 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse31 (mod .cse32 256))) (and (= .cse31 |c_ULTIMATE.start_gcd_test_~b#1|) (<= 128 (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse32) 256)) (<= .cse31 127) (<= .cse27 |v_ULTIMATE.start_gcd_test_~a#1_33|))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse34 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse33 (mod .cse34 256))) (and (= .cse33 |c_ULTIMATE.start_gcd_test_~b#1|) (<= .cse33 127) (<= .cse27 |v_ULTIMATE.start_gcd_test_~a#1_33|) (<= (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse34) 256) 127))))) (and .cse24 .cse28 .cse8)) .cse18))) (not (= .cse27 0)) (<= .cse27 127) (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse35 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse27))) (and (not (= .cse35 0)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (= .cse1 (mod (+ .cse35 |c_ULTIMATE.start_main1_~y~0#1|) 256)) (<= (mod (+ .cse35 .cse2) 256) 127)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse36 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse27))) (and (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (= .cse1 (mod (+ .cse36 |c_ULTIMATE.start_main1_~y~0#1|) 256)) (<= 128 (mod (+ .cse36 .cse2) 256))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse37 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse27))) (and (= (mod .cse37 256) |c_ULTIMATE.start_gcd_test_~a#1|) (<= 128 (mod (+ .cse37 .cse2) 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| .cse27))) (and (= (mod .cse38 256) |c_ULTIMATE.start_gcd_test_~a#1|) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|) (<= (mod (+ .cse38 .cse2) 256) 127)))))) (and (let ((.cse43 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (and (<= .cse27 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_33|)) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|) 0))))) (or (and .cse16 (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse39 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (<= .cse27 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_33|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_33| 1) 0) (= (mod (+ .cse11 .cse39) 256) .cse40) (<= (mod .cse39 256) 127) (not (= .cse39 0))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse42 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse41 (mod .cse42 256))) (and (= .cse41 |c_ULTIMATE.start_gcd_test_~b#1|) (<= 128 (mod (+ .cse11 .cse42) 256)) (<= .cse41 127) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|))))) (and .cse13 .cse8 .cse43) (and .cse8 .cse9 .cse43) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse45 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse44 (mod .cse45 256))) (and (= .cse44 |c_ULTIMATE.start_gcd_test_~b#1|) (<= (mod (+ .cse11 .cse45) 256) 127) (<= .cse44 127) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|))))))) (and .cse18 (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse46 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (<= .cse27 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_33|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_33| 1) 0) (= (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse46) 256) .cse40) (<= (mod .cse46 256) 127) (not (= .cse46 0))))) (and .cse24 .cse8 .cse43) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse48 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse47 (mod .cse48 256))) (and (= .cse47 |c_ULTIMATE.start_gcd_test_~b#1|) (<= 128 (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse48) 256)) (<= .cse47 127) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|))))) (and .cse8 .cse43 .cse19) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse50 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (let ((.cse49 (mod .cse50 256))) (and (= .cse49 |c_ULTIMATE.start_gcd_test_~b#1|) (<= .cse49 127) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|) (<= (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse50) 256) 127))))))) (and .cse16 (or .cse51 .cse52 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse53 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (<= .cse27 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_33|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_33| 1) 0) (= (mod (+ .cse11 .cse53) 256) .cse40) (<= 128 (mod .cse53 256))))))) (and (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse54 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (<= .cse27 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_33|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_33| 1) 0) (= (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse54) 256) .cse40) (<= 128 (mod .cse54 256))))) .cse55 .cse56) .cse18))) (let ((.cse58 (+ .cse27 (- 256)))) (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse57 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse58))) (and (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod .cse57 256)) (<= (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse57) 256) 127)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse59 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse58))) (and (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (= .cse1 (mod (+ .cse2 .cse59) 256)) (not (= .cse59 0)) (<= (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse59) 256) 127)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse60 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse58))) (and (<= 128 (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse60) 256)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod .cse60 256))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse61 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse58))) (and (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (= .cse1 (mod (+ .cse2 .cse61) 256)) (not (= .cse61 0)) (<= 128 (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse61) 256))))))) (<= 128 .cse27)))) (<= (+ |c_ULTIMATE.start_main1_~y~0#1| 1) 0))))))) is different from true