./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/gcd_2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca5569-215b-4f87-a7b1-b10c7bae27b2/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca5569-215b-4f87-a7b1-b10c7bae27b2/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca5569-215b-4f87-a7b1-b10c7bae27b2/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca5569-215b-4f87-a7b1-b10c7bae27b2/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/gcd_2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca5569-215b-4f87-a7b1-b10c7bae27b2/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca5569-215b-4f87-a7b1-b10c7bae27b2/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7da096d64cf3390a2bb7c442378ab6f697dfdf0fd9d4078975ad6171409858bb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 01:01:48,673 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 01:01:48,749 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca5569-215b-4f87-a7b1-b10c7bae27b2/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-12 01:01:48,755 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 01:01:48,756 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 01:01:48,783 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 01:01:48,784 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 01:01:48,785 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 01:01:48,786 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 01:01:48,786 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 01:01:48,787 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 01:01:48,788 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 01:01:48,788 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 01:01:48,789 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 01:01:48,789 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 01:01:48,790 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 01:01:48,791 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 01:01:48,791 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 01:01:48,792 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 01:01:48,792 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 01:01:48,793 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 01:01:48,794 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 01:01:48,795 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 01:01:48,795 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 01:01:48,796 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 01:01:48,796 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 01:01:48,797 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 01:01:48,797 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 01:01:48,798 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 01:01:48,798 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 01:01:48,800 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 01:01:48,800 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 01:01:48,800 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 01:01:48,800 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 01:01:48,801 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 01:01:48,801 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 01:01:48,801 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:01:48,802 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 01:01:48,802 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 01:01:48,802 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 01:01:48,803 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 01:01:48,803 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 01:01:48,803 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 01:01:48,804 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 01:01:48,804 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 01:01:48,804 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_9aca5569-215b-4f87-a7b1-b10c7bae27b2/bin/utaipan-verify-NcY6lQBIFX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca5569-215b-4f87-a7b1-b10c7bae27b2/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7da096d64cf3390a2bb7c442378ab6f697dfdf0fd9d4078975ad6171409858bb [2023-11-12 01:01:49,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 01:01:49,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 01:01:49,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 01:01:49,163 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 01:01:49,164 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 01:01:49,166 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca5569-215b-4f87-a7b1-b10c7bae27b2/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/bitvector/gcd_2.c [2023-11-12 01:01:52,317 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 01:01:52,513 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 01:01:52,513 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca5569-215b-4f87-a7b1-b10c7bae27b2/sv-benchmarks/c/bitvector/gcd_2.c [2023-11-12 01:01:52,523 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca5569-215b-4f87-a7b1-b10c7bae27b2/bin/utaipan-verify-NcY6lQBIFX/data/79922ac66/5fd19359b2974c99a714f99d56e70391/FLAG856bbbf0a [2023-11-12 01:01:52,540 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca5569-215b-4f87-a7b1-b10c7bae27b2/bin/utaipan-verify-NcY6lQBIFX/data/79922ac66/5fd19359b2974c99a714f99d56e70391 [2023-11-12 01:01:52,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 01:01:52,545 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 01:01:52,547 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 01:01:52,547 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 01:01:52,553 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 01:01:52,554 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:01:52" (1/1) ... [2023-11-12 01:01:52,556 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d08f95e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:52, skipping insertion in model container [2023-11-12 01:01:52,556 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:01:52" (1/1) ... [2023-11-12 01:01:52,579 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 01:01:52,774 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_9aca5569-215b-4f87-a7b1-b10c7bae27b2/sv-benchmarks/c/bitvector/gcd_2.c[664,677] [2023-11-12 01:01:52,793 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:01:52,803 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 01:01:52,817 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_9aca5569-215b-4f87-a7b1-b10c7bae27b2/sv-benchmarks/c/bitvector/gcd_2.c[664,677] [2023-11-12 01:01:52,823 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 01:01:52,838 INFO L206 MainTranslator]: Completed translation [2023-11-12 01:01:52,839 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:52 WrapperNode [2023-11-12 01:01:52,839 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 01:01:52,840 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 01:01:52,840 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 01:01:52,841 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 01:01:52,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:52" (1/1) ... [2023-11-12 01:01:52,858 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:52" (1/1) ... [2023-11-12 01:01:52,888 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2023-11-12 01:01:52,889 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 01:01:52,889 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 01:01:52,890 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 01:01:52,890 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 01:01:52,899 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:52" (1/1) ... [2023-11-12 01:01:52,900 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:52" (1/1) ... [2023-11-12 01:01:52,901 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:52" (1/1) ... [2023-11-12 01:01:52,904 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:52" (1/1) ... [2023-11-12 01:01:52,908 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:52" (1/1) ... [2023-11-12 01:01:52,912 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:52" (1/1) ... [2023-11-12 01:01:52,914 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:52" (1/1) ... [2023-11-12 01:01:52,915 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:52" (1/1) ... [2023-11-12 01:01:52,917 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 01:01:52,924 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 01:01:52,924 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 01:01:52,924 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 01:01:52,925 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:52" (1/1) ... [2023-11-12 01:01:52,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 01:01:52,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca5569-215b-4f87-a7b1-b10c7bae27b2/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:01:52,963 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca5569-215b-4f87-a7b1-b10c7bae27b2/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 01:01:52,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca5569-215b-4f87-a7b1-b10c7bae27b2/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 01:01:53,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 01:01:53,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 01:01:53,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 01:01:53,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 01:01:53,094 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 01:01:53,096 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 01:01:53,246 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 01:01:53,326 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 01:01:53,332 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 01:01:53,336 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:01:53 BoogieIcfgContainer [2023-11-12 01:01:53,337 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 01:01:53,343 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 01:01:53,343 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 01:01:53,348 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 01:01:53,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 01:01:52" (1/3) ... [2023-11-12 01:01:53,349 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6084dfdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:01:53, skipping insertion in model container [2023-11-12 01:01:53,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:01:52" (2/3) ... [2023-11-12 01:01:53,352 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6084dfdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:01:53, skipping insertion in model container [2023-11-12 01:01:53,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:01:53" (3/3) ... [2023-11-12 01:01:53,355 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_2.c [2023-11-12 01:01:53,376 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 01:01:53,377 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 01:01:53,425 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 01:01:53,434 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;@3143a32c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 01:01:53,434 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 01:01:53,439 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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) [2023-11-12 01:01:53,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 01:01:53,447 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:01:53,447 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 01:01:53,448 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:01:53,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:01:53,455 INFO L85 PathProgramCache]: Analyzing trace with hash 84816067, now seen corresponding path program 1 times [2023-11-12 01:01:53,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:01:53,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654005173] [2023-11-12 01:01:53,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:01:53,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:01:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:01:53,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:01:53,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:01:53,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654005173] [2023-11-12 01:01:53,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654005173] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 01:01:53,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 01:01:53,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 01:01:53,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429050623] [2023-11-12 01:01:53,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 01:01:53,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 01:01:53,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:01:54,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 01:01:54,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:01:54,016 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 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) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:01:54,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:01:54,092 INFO L93 Difference]: Finished difference Result 18 states and 22 transitions. [2023-11-12 01:01:54,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 01:01:54,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2023-11-12 01:01:54,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:01:54,102 INFO L225 Difference]: With dead ends: 18 [2023-11-12 01:01:54,103 INFO L226 Difference]: Without dead ends: 7 [2023-11-12 01:01:54,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 01:01:54,111 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 01:01:54,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 13 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 01:01:54,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2023-11-12 01:01:54,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2023-11-12 01:01:54,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:01:54,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2023-11-12 01:01:54,147 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2023-11-12 01:01:54,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:01:54,149 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2023-11-12 01:01:54,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:01:54,150 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2023-11-12 01:01:54,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-12 01:01:54,151 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:01:54,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 01:01:54,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 01:01:54,153 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:01:54,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:01:54,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1696327067, now seen corresponding path program 1 times [2023-11-12 01:01:54,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:01:54,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105583888] [2023-11-12 01:01:54,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:01:54,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:01:54,188 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 01:01:54,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [577476776] [2023-11-12 01:01:54,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:01:54,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:01:54,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca5569-215b-4f87-a7b1-b10c7bae27b2/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:01:54,200 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca5569-215b-4f87-a7b1-b10c7bae27b2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:01:54,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca5569-215b-4f87-a7b1-b10c7bae27b2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 01:01:54,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 01:01:54,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-12 01:01:54,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:01:54,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:01:54,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 01:01:55,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 01:01:55,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 01:01:55,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105583888] [2023-11-12 01:01:55,031 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 01:01:55,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577476776] [2023-11-12 01:01:55,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577476776] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 01:01:55,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [417630160] [2023-11-12 01:01:55,063 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2023-11-12 01:01:55,063 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 01:01:55,068 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 01:01:55,074 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 01:01:55,075 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-12 01:01:57,416 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-12 01:01:57,613 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '85#(and (<= 1 |#StackHeapBarrier|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= (+ |ULTIMATE.start_main_~y~0#1| 1) |ULTIMATE.start_main_~g~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 127) (= |ULTIMATE.start_main_~g~0#1| |ULTIMATE.start_gcd_test_#res#1|) (<= |ULTIMATE.start_main_~g~0#1| 127) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 128)) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0))' at error location [2023-11-12 01:01:57,614 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-12 01:01:57,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 01:01:57,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-12 01:01:57,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212854401] [2023-11-12 01:01:57,615 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 01:01:57,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 01:01:57,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 01:01:57,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 01:01:57,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-11-12 01:01:57,619 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 10 states, 10 states have (on average 1.1) 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) [2023-11-12 01:01:57,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 01:01:57,743 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2023-11-12 01:01:57,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 01:01:57,744 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.1) 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 6 [2023-11-12 01:01:57,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 01:01:57,744 INFO L225 Difference]: With dead ends: 14 [2023-11-12 01:01:57,745 INFO L226 Difference]: Without dead ends: 9 [2023-11-12 01:01:57,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-11-12 01:01:57,747 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 01:01:57,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 11 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 01:01:57,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-12 01:01:57,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-11-12 01:01:57,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 01:01:57,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2023-11-12 01:01:57,753 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2023-11-12 01:01:57,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 01:01:57,753 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2023-11-12 01:01:57,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.1) 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) [2023-11-12 01:01:57,754 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2023-11-12 01:01:57,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 01:01:57,754 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 01:01:57,754 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2023-11-12 01:01:57,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca5569-215b-4f87-a7b1-b10c7bae27b2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 01:01:57,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca5569-215b-4f87-a7b1-b10c7bae27b2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-12 01:01:57,961 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 01:01:57,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 01:01:57,962 INFO L85 PathProgramCache]: Analyzing trace with hash 936209957, now seen corresponding path program 2 times [2023-11-12 01:01:57,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 01:01:57,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683147886] [2023-11-12 01:01:57,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 01:01:57,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 01:01:57,981 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 01:01:57,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1007846087] [2023-11-12 01:01:57,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 01:01:57,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 01:01:57,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca5569-215b-4f87-a7b1-b10c7bae27b2/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 01:01:57,992 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca5569-215b-4f87-a7b1-b10c7bae27b2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 01:01:58,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9aca5569-215b-4f87-a7b1-b10c7bae27b2/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 01:01:58,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-12 01:01:58,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 01:01:58,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-12 01:01:58,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 01:02:32,827 WARN L854 $PredicateComparison]: unable to prove that (and (let ((.cse3 (* |c_ULTIMATE.start_gcd_test_~a#1| 255)) (.cse4 (+ |c_ULTIMATE.start_gcd_test_~b#1| 256)) (.cse11 (= |c_ULTIMATE.start_gcd_test_~b#1| 0)) (.cse1 (<= 0 |c_ULTIMATE.start_gcd_test_~a#1|)) (.cse7 (* |c_ULTIMATE.start_main_~y~0#1| 255))) (or (and (<= 0 |c_ULTIMATE.start_main_~y~0#1|) (or (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse0 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_main_~y~0#1|) 256))) (and (not (= .cse0 0)) (= (mod (mod .cse0 |c_ULTIMATE.start_gcd_test_~a#1|) 256) |c_ULTIMATE.start_gcd_test_~b#1|) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (and (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse0) 256)) (<= |c_ULTIMATE.start_main_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_34|))) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|)))) .cse1) (and .cse1 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int) (|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse6 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_main_~y~0#1|))) (let ((.cse5 (+ (- 256) (mod (+ .cse7 .cse6) 256)))) (let ((.cse2 (mod .cse5 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= (mod (+ .cse2 .cse3) 256) .cse4) (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse5) 256) |c_ULTIMATE.start_gcd_test_~a#1|) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_33| 1) 0) (not (= .cse6 0)) (not (= .cse2 0)) (<= |c_ULTIMATE.start_main_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_34|))))))) (and (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse9 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_main_~y~0#1|))) (let ((.cse8 (+ (- 256) (mod (+ .cse7 .cse9) 256)))) (and (= (mod .cse8 |c_ULTIMATE.start_gcd_test_~a#1|) 0) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_33| 1) 0) (not (= .cse9 0)) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (and (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse8) 256) |c_ULTIMATE.start_gcd_test_~a#1|) (<= |c_ULTIMATE.start_main_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_34|))))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse10 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_main_~y~0#1|) 256))) (and (not (= .cse10 0)) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (and (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse10) 256)) (<= |c_ULTIMATE.start_main_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_34|))) (= (mod .cse10 |c_ULTIMATE.start_gcd_test_~a#1|) 0) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|))))) .cse11)) (not (= |c_ULTIMATE.start_main_~y~0#1| 0))) (and (let ((.cse13 (mod .cse7 256))) (let ((.cse26 (not (= .cse13 0))) (.cse27 (<= .cse13 127)) (.cse12 (<= 128 .cse13)) (.cse19 (<= (+ |c_ULTIMATE.start_gcd_test_~a#1| 1) 0)) (.cse15 (+ |c_ULTIMATE.start_gcd_test_~a#1| 256)) (.cse18 (+ (- 256) .cse13))) (or (and .cse12 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int) (|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse14 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| .cse18))) (let ((.cse16 (+ (- 256) (mod (+ .cse7 .cse14) 256)))) (let ((.cse17 (mod .cse16 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (<= .cse13 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_34|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_33| 1) 0) (not (= .cse14 0)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_34| 1) 0) (= .cse15 (mod (+ .cse7 .cse14 (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse16)) 256)) (= (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse17) 256) .cse4) (not (= .cse17 0))))))) .cse19) (and (or (and .cse12 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int) (|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse20 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| .cse18))) (let ((.cse22 (+ (- 256) (mod (+ .cse7 .cse20) 256)))) (let ((.cse21 (mod .cse22 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_33| 1) 0) (not (= .cse20 0)) (= (mod (+ .cse21 .cse3) 256) .cse4) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_34|) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse22) 256)) (not (= .cse21 0)))))))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int) (|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse24 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| .cse13))) (let ((.cse23 (+ (- 256) (mod (+ |c_ULTIMATE.start_main_~y~0#1| .cse24) 256)))) (let ((.cse25 (mod .cse23 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse23) 256)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_33| 1) 0) (not (= .cse24 0)) (not (= .cse25 0)) (<= .cse13 |v_ULTIMATE.start_gcd_test_~a#1_34|) (= (mod (+ .cse3 .cse25) 256) .cse4)))))) .cse26 .cse27)) .cse1) (and .cse11 (or (and .cse12 (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse29 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| .cse18))) (let ((.cse28 (+ (- 256) (mod (+ .cse7 .cse29) 256)))) (and (= (mod .cse28 |c_ULTIMATE.start_gcd_test_~a#1|) 0) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_33| 1) 0) (not (= .cse29 0)) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (and (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_34|) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse28) 256)))))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse32 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| .cse18))) (let ((.cse30 (mod .cse32 256))) (and (not (= .cse30 0)) (= (mod .cse30 |c_ULTIMATE.start_gcd_test_~a#1|) 0) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse31 (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse30))) (and (<= .cse13 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_34|)) (not (= .cse31 0)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_34| 1) 0) (= (mod (+ .cse31 (* .cse32 255)) 256) .cse15)))))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse34 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| .cse18))) (let ((.cse33 (+ (- 256) (mod (+ .cse7 .cse34) 256)))) (and (= (mod .cse33 |c_ULTIMATE.start_gcd_test_~a#1|) 0) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_33| 1) 0) (not (= .cse34 0)) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse35 (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse33))) (and (<= .cse13 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_34|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_34| 1) 0) (= .cse15 (mod (+ .cse7 .cse34 .cse35) 256)) (not (= 0 .cse35))))))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse36 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_33| .cse18) 256))) (and (not (= .cse36 0)) (= (mod .cse36 |c_ULTIMATE.start_gcd_test_~a#1|) 0) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (and (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse36) 256) |c_ULTIMATE.start_gcd_test_~a#1|) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_34|)))))))) (and (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int) (|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse37 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_33| .cse13) 256))) (and (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse37) 256)) (<= .cse13 |v_ULTIMATE.start_gcd_test_~a#1_34|) (= (mod .cse37 |c_ULTIMATE.start_gcd_test_~a#1|) 0) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|) (not (= .cse37 0))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int) (|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse39 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| .cse13))) (let ((.cse38 (+ (- 256) (mod (+ |c_ULTIMATE.start_main_~y~0#1| .cse39) 256)))) (and (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse38) 256)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_33| 1) 0) (= (mod .cse38 |c_ULTIMATE.start_gcd_test_~a#1|) 0) (not (= .cse39 0)) (<= .cse13 |v_ULTIMATE.start_gcd_test_~a#1_34|)))))) .cse26 .cse27))) (and .cse1 (or (and .cse12 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int) (|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse40 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_33| .cse18) 256))) (and (not (= .cse40 0)) (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse40) 256) |c_ULTIMATE.start_gcd_test_~a#1|) (= (mod (mod .cse40 |c_ULTIMATE.start_gcd_test_~a#1|) 256) |c_ULTIMATE.start_gcd_test_~b#1|) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_34|) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|))))) (and .cse26 .cse27 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int) (|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse41 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_33| .cse13) 256))) (and (= (mod (mod .cse41 |c_ULTIMATE.start_gcd_test_~a#1|) 256) |c_ULTIMATE.start_gcd_test_~b#1|) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse41) 256)) (<= .cse13 |v_ULTIMATE.start_gcd_test_~a#1_34|) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|) (not (= .cse41 0)))))))) (and .cse12 .cse19 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int) (|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse44 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| .cse18))) (let ((.cse42 (mod .cse44 256))) (let ((.cse43 (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse42))) (and (not (= .cse42 0)) (<= .cse13 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_34|)) (not (= .cse43 0)) (= (mod (mod .cse42 |c_ULTIMATE.start_gcd_test_~a#1|) 256) |c_ULTIMATE.start_gcd_test_~b#1|) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_34| 1) 0) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|) (= (mod (+ .cse43 (* .cse44 255)) 256) .cse15)))))))))) (<= (+ |c_ULTIMATE.start_main_~y~0#1| 1) 0)))) (not (= |c_ULTIMATE.start_gcd_test_~a#1| 0)) (<= |c_ULTIMATE.start_main_~y~0#1| 127)) is different from false [2023-11-12 01:02:40,536 WARN L854 $PredicateComparison]: unable to prove that (and (not (= |c_ULTIMATE.start_main_~g~0#1| 0)) (<= |c_ULTIMATE.start_main_~y~0#1| 127) (let ((.cse5 (<= 0 |c_ULTIMATE.start_main_~g~0#1|)) (.cse3 (* |c_ULTIMATE.start_main_~y~0#1| 255))) (or (and (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse0 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_main_~y~0#1|) 256))) (and (not (= .cse0 0)) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (and (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse0) 256) |c_ULTIMATE.start_main_~g~0#1|) (<= |c_ULTIMATE.start_main_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_34|))) (= (mod .cse0 |c_ULTIMATE.start_main_~g~0#1|) 0) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse2 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_main_~y~0#1|))) (let ((.cse1 (+ (- 256) (mod (+ .cse3 .cse2) 256)))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (and (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse1) 256) |c_ULTIMATE.start_main_~g~0#1|) (<= |c_ULTIMATE.start_main_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_34|))) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_33| 1) 0) (not (= .cse2 0)) (= (mod .cse1 |c_ULTIMATE.start_main_~g~0#1|) 0))))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse4 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_33| |c_ULTIMATE.start_main_~y~0#1|) 256))) (and (not (= .cse4 0)) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (and (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse4) 256) |c_ULTIMATE.start_main_~g~0#1|) (<= |c_ULTIMATE.start_main_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_34|))) (= (mod (mod .cse4 |c_ULTIMATE.start_main_~g~0#1|) 256) 0) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|)))) .cse5)) (<= 0 |c_ULTIMATE.start_main_~y~0#1|) (not (= |c_ULTIMATE.start_main_~y~0#1| 0))) (and (let ((.cse8 (mod .cse3 256))) (let ((.cse14 (not (= .cse8 0))) (.cse15 (<= .cse8 127)) (.cse6 (<= 128 .cse8)) (.cse11 (+ 256 |c_ULTIMATE.start_main_~g~0#1|)) (.cse12 (+ (- 256) .cse8))) (or (and .cse6 (<= (+ |c_ULTIMATE.start_main_~g~0#1| 1) 0) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int) (|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse10 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| .cse12))) (let ((.cse7 (mod .cse10 256))) (let ((.cse9 (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse7))) (and (not (= .cse7 0)) (<= .cse8 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_34|)) (not (= .cse9 0)) (= (mod (+ .cse9 (* .cse10 255)) 256) .cse11) (= (mod (mod .cse7 |c_ULTIMATE.start_main_~g~0#1|) 256) 0) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_34| 1) 0) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|))))))) (and .cse5 (or (and .cse6 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int) (|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse13 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_33| .cse12) 256))) (and (not (= .cse13 0)) (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse13) 256) |c_ULTIMATE.start_main_~g~0#1|) (= (mod (mod .cse13 |c_ULTIMATE.start_main_~g~0#1|) 256) 0) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_34|) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|))))) (and .cse14 .cse15 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int) (|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse16 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_33| .cse8) 256))) (and (= |c_ULTIMATE.start_main_~g~0#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse16) 256)) (<= .cse8 |v_ULTIMATE.start_gcd_test_~a#1_34|) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|) (= (mod (mod .cse16 |c_ULTIMATE.start_main_~g~0#1|) 256) 0) (not (= .cse16 0)))))))) (and .cse14 .cse15 (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int) (|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse17 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_33| .cse8) 256))) (and (= |c_ULTIMATE.start_main_~g~0#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse17) 256)) (<= .cse8 |v_ULTIMATE.start_gcd_test_~a#1_34|) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|) (= (mod .cse17 |c_ULTIMATE.start_main_~g~0#1|) 0) (not (= .cse17 0))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int) (|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse19 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| .cse8))) (let ((.cse18 (+ (- 256) (mod (+ |c_ULTIMATE.start_main_~y~0#1| .cse19) 256)))) (and (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_33| 1) 0) (= (mod .cse18 |c_ULTIMATE.start_main_~g~0#1|) 0) (not (= .cse19 0)) (<= .cse8 |v_ULTIMATE.start_gcd_test_~a#1_34|) (= |c_ULTIMATE.start_main_~g~0#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse18) 256)))))))) (and .cse6 (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse21 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| .cse12))) (let ((.cse20 (+ (- 256) (mod (+ .cse3 .cse21) 256)))) (and (= (mod .cse20 |c_ULTIMATE.start_main_~g~0#1|) 0) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_33| 1) 0) (not (= .cse21 0)) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse22 (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse20))) (and (<= .cse8 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_34|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_34| 1) 0) (not (= 0 .cse22)) (= .cse11 (mod (+ .cse3 .cse21 .cse22) 256))))))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse23 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_33| .cse12) 256))) (and (= (mod .cse23 |c_ULTIMATE.start_main_~g~0#1|) 0) (not (= .cse23 0)) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (and (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse23) 256) |c_ULTIMATE.start_main_~g~0#1|) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_34|))) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse26 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| .cse12))) (let ((.cse24 (mod .cse26 256))) (and (= (mod .cse24 |c_ULTIMATE.start_main_~g~0#1|) 0) (not (= .cse24 0)) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (let ((.cse25 (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse24))) (and (<= .cse8 (+ 256 |v_ULTIMATE.start_gcd_test_~a#1_34|)) (not (= .cse25 0)) (= (mod (+ .cse25 (* .cse26 255)) 256) .cse11) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_34| 1) 0)))) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_33|))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_33| Int)) (let ((.cse28 (mod |v_ULTIMATE.start_gcd_test_~a#1_33| .cse12))) (let ((.cse27 (+ (- 256) (mod (+ .cse3 .cse28) 256)))) (and (= (mod .cse27 |c_ULTIMATE.start_main_~g~0#1|) 0) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_33| 1) 0) (not (= .cse28 0)) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_34| Int)) (and (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_34|) (= |c_ULTIMATE.start_main_~g~0#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_34| .cse27) 256))))))))))))) (<= (+ |c_ULTIMATE.start_main_~y~0#1| 1) 0)))) (<= |c_ULTIMATE.start_main_~g~0#1| 127)) is different from false [2023-11-12 01:02:44,113 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 3 not checked. [2023-11-12 01:02:44,114 INFO L327 TraceCheckSpWp]: Computing backward predicates...