./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_3+newton_2_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_6310314e-6612-4d84-a248-5b3f95a2b9d6/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6310314e-6612-4d84-a248-5b3f95a2b9d6/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6310314e-6612-4d84-a248-5b3f95a2b9d6/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6310314e-6612-4d84-a248-5b3f95a2b9d6/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_2_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6310314e-6612-4d84-a248-5b3f95a2b9d6/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6310314e-6612-4d84-a248-5b3f95a2b9d6/bin/utaipan-verify-nQ1chXbOIh --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 e401cb5a55548693b1ec0dc85ab970a5c443ca7f94bea25587ee110941770f7d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:28:31,431 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:28:31,493 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6310314e-6612-4d84-a248-5b3f95a2b9d6/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 17:28:31,497 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:28:31,498 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:28:31,518 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:28:31,519 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:28:31,520 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:28:31,520 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:28:31,521 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:28:31,521 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:28:31,522 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:28:31,522 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:28:31,523 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:28:31,523 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:28:31,524 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:28:31,524 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:28:31,525 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:28:31,525 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:28:31,526 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:28:31,526 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:28:31,531 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:28:31,532 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:28:31,533 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:28:31,533 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:28:31,533 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:28:31,534 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:28:31,534 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:28:31,534 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:28:31,535 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:28:31,535 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:28:31,535 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:28:31,536 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:28:31,536 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:28:31,536 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:28:31,536 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:28:31,537 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:28:31,537 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:28:31,537 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:28:31,537 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:28:31,537 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:28:31,538 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:28:31,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:28:31,538 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:28:31,538 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:28:31,538 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:28:31,539 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:28:31,539 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_6310314e-6612-4d84-a248-5b3f95a2b9d6/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6310314e-6612-4d84-a248-5b3f95a2b9d6/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e401cb5a55548693b1ec0dc85ab970a5c443ca7f94bea25587ee110941770f7d [2023-12-02 17:28:31,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:28:31,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:28:31,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:28:31,781 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:28:31,782 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:28:31,783 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6310314e-6612-4d84-a248-5b3f95a2b9d6/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/combinations/gcd_3+newton_2_3.i [2023-12-02 17:28:34,566 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:28:34,747 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:28:34,747 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6310314e-6612-4d84-a248-5b3f95a2b9d6/sv-benchmarks/c/combinations/gcd_3+newton_2_3.i [2023-12-02 17:28:34,756 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6310314e-6612-4d84-a248-5b3f95a2b9d6/bin/utaipan-verify-nQ1chXbOIh/data/5b62c88c3/415988202edf4d3a986dddf36f41182e/FLAG1ee1c7693 [2023-12-02 17:28:34,770 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6310314e-6612-4d84-a248-5b3f95a2b9d6/bin/utaipan-verify-nQ1chXbOIh/data/5b62c88c3/415988202edf4d3a986dddf36f41182e [2023-12-02 17:28:34,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:28:34,774 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:28:34,776 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:28:34,776 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:28:34,781 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:28:34,781 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:28:34" (1/1) ... [2023-12-02 17:28:34,783 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ac78980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:28:34, skipping insertion in model container [2023-12-02 17:28:34,783 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:28:34" (1/1) ... [2023-12-02 17:28:34,807 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:28:34,959 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_6310314e-6612-4d84-a248-5b3f95a2b9d6/sv-benchmarks/c/combinations/gcd_3+newton_2_3.i[1226,1239] [2023-12-02 17:28:34,984 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_6310314e-6612-4d84-a248-5b3f95a2b9d6/sv-benchmarks/c/combinations/gcd_3+newton_2_3.i[2841,2854] [2023-12-02 17:28:34,986 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:28:34,996 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:28:35,008 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_6310314e-6612-4d84-a248-5b3f95a2b9d6/sv-benchmarks/c/combinations/gcd_3+newton_2_3.i[1226,1239] [2023-12-02 17:28:35,018 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_6310314e-6612-4d84-a248-5b3f95a2b9d6/sv-benchmarks/c/combinations/gcd_3+newton_2_3.i[2841,2854] [2023-12-02 17:28:35,019 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:28:35,031 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:28:35,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:28:35 WrapperNode [2023-12-02 17:28:35,031 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:28:35,032 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:28:35,033 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:28:35,033 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:28:35,040 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:28:35" (1/1) ... [2023-12-02 17:28:35,048 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:28:35" (1/1) ... [2023-12-02 17:28:35,071 INFO L138 Inliner]: procedures = 27, calls = 24, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 88 [2023-12-02 17:28:35,071 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:28:35,072 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:28:35,072 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:28:35,072 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:28:35,081 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:28:35" (1/1) ... [2023-12-02 17:28:35,081 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:28:35" (1/1) ... [2023-12-02 17:28:35,084 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:28:35" (1/1) ... [2023-12-02 17:28:35,084 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:28:35" (1/1) ... [2023-12-02 17:28:35,089 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:28:35" (1/1) ... [2023-12-02 17:28:35,093 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:28:35" (1/1) ... [2023-12-02 17:28:35,094 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:28:35" (1/1) ... [2023-12-02 17:28:35,095 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:28:35" (1/1) ... [2023-12-02 17:28:35,098 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:28:35,099 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:28:35,099 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:28:35,099 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:28:35,100 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:28:35" (1/1) ... [2023-12-02 17:28:35,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:28:35,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6310314e-6612-4d84-a248-5b3f95a2b9d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:28:35,128 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6310314e-6612-4d84-a248-5b3f95a2b9d6/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:28:35,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6310314e-6612-4d84-a248-5b3f95a2b9d6/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:28:35,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:28:35,160 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2023-12-02 17:28:35,160 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2023-12-02 17:28:35,160 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-12-02 17:28:35,161 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-12-02 17:28:35,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 17:28:35,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:28:35,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:28:35,233 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:28:35,236 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:28:35,385 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:28:35,465 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:28:35,465 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 17:28:35,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:28:35 BoogieIcfgContainer [2023-12-02 17:28:35,467 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:28:35,477 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:28:35,478 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:28:35,481 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:28:35,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:28:34" (1/3) ... [2023-12-02 17:28:35,482 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f7e81c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:28:35, skipping insertion in model container [2023-12-02 17:28:35,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:28:35" (2/3) ... [2023-12-02 17:28:35,482 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f7e81c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:28:35, skipping insertion in model container [2023-12-02 17:28:35,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:28:35" (3/3) ... [2023-12-02 17:28:35,484 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_2_3.i [2023-12-02 17:28:35,498 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:28:35,499 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 17:28:35,539 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:28:35,545 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;@7125c646, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:28:35,545 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 17:28:35,548 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 16 states have (on average 1.4375) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 17:28:35,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 17:28:35,554 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:28:35,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 17:28:35,556 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:28:35,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:28:35,561 INFO L85 PathProgramCache]: Analyzing trace with hash -584909265, now seen corresponding path program 1 times [2023-12-02 17:28:35,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:28:35,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169023380] [2023-12-02 17:28:35,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:28:35,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:28:35,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:28:35,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:28:35,930 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:28:35,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169023380] [2023-12-02 17:28:35,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169023380] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:28:35,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:28:35,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:28:35,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036548774] [2023-12-02 17:28:35,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:28:35,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:28:35,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:28:35,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:28:35,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:28:35,971 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.4375) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 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) [2023-12-02 17:28:36,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:28:36,067 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2023-12-02 17:28:36,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:28:36,070 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 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 [2023-12-02 17:28:36,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:28:36,077 INFO L225 Difference]: With dead ends: 37 [2023-12-02 17:28:36,077 INFO L226 Difference]: Without dead ends: 21 [2023-12-02 17:28:36,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:28:36,083 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 5 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:28:36,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 63 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:28:36,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-12-02 17:28:36,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-12-02 17:28:36,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 17:28:36,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2023-12-02 17:28:36,118 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 6 [2023-12-02 17:28:36,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:28:36,119 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2023-12-02 17:28:36,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 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) [2023-12-02 17:28:36,119 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2023-12-02 17:28:36,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 17:28:36,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:28:36,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:28:36,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 17:28:36,121 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:28:36,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:28:36,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1018725074, now seen corresponding path program 1 times [2023-12-02 17:28:36,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:28:36,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209751971] [2023-12-02 17:28:36,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:28:36,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:28:36,138 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:28:36,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [209804276] [2023-12-02 17:28:36,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:28:36,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:28:36,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6310314e-6612-4d84-a248-5b3f95a2b9d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:28:36,143 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6310314e-6612-4d84-a248-5b3f95a2b9d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:28:36,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6310314e-6612-4d84-a248-5b3f95a2b9d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 17:28:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:28:36,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-02 17:28:36,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:28:41,442 WARN L876 $PredicateComparison]: unable to prove that (or (and (exists ((|ULTIMATE.start_gcd_test_#res#1| Int)) (and (<= |c_ULTIMATE.start_main1_~g~0#1| |ULTIMATE.start_gcd_test_#res#1|) (= (mod (mod |c_ULTIMATE.start_main1_~x~0#1| |ULTIMATE.start_gcd_test_#res#1|) 256) 0) (<= |ULTIMATE.start_gcd_test_#res#1| 127) (not (= |ULTIMATE.start_gcd_test_#res#1| 0)))) (<= 0 |c_ULTIMATE.start_main1_~x~0#1|)) (and (let ((.cse0 (mod (* 255 |c_ULTIMATE.start_main1_~x~0#1|) 256))) (or (and (<= 128 .cse0) (let ((.cse1 (+ .cse0 (- 256)))) (or (exists ((|ULTIMATE.start_gcd_test_#res#1| Int)) (and (<= |c_ULTIMATE.start_main1_~g~0#1| |ULTIMATE.start_gcd_test_#res#1|) (= 0 (mod .cse1 |ULTIMATE.start_gcd_test_#res#1|)) (<= |ULTIMATE.start_gcd_test_#res#1| 127) (<= 0 |ULTIMATE.start_gcd_test_#res#1|) (not (= |ULTIMATE.start_gcd_test_#res#1| 0)))) (exists ((|ULTIMATE.start_gcd_test_#res#1| Int)) (and (<= |c_ULTIMATE.start_main1_~g~0#1| |ULTIMATE.start_gcd_test_#res#1|) (<= (+ |ULTIMATE.start_gcd_test_#res#1| 1) 0) (= 0 (mod .cse1 |ULTIMATE.start_gcd_test_#res#1|))))))) (and (<= .cse0 127) (exists ((|ULTIMATE.start_gcd_test_#res#1| Int)) (and (<= |c_ULTIMATE.start_main1_~g~0#1| |ULTIMATE.start_gcd_test_#res#1|) (<= |ULTIMATE.start_gcd_test_#res#1| 127) (= (mod (mod .cse0 |ULTIMATE.start_gcd_test_#res#1|) 256) 0) (not (= |ULTIMATE.start_gcd_test_#res#1| 0))))))) (<= (+ |c_ULTIMATE.start_main1_~x~0#1| 1) 0))) is different from true [2023-12-02 17:28:41,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:28:41,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:28:45,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:28:45,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:28:45,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209751971] [2023-12-02 17:28:45,700 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 17:28:45,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209804276] [2023-12-02 17:28:45,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209804276] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:28:45,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [175732842] [2023-12-02 17:28:45,720 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2023-12-02 17:28:45,721 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:28:45,723 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:28:45,728 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:28:45,729 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:28:46,550 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:28:48,445 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '155#(and (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 1 |ULTIMATE.start_main1_~x~0#1|) (<= (+ |ULTIMATE.start_main1_~x~0#1| 1) |ULTIMATE.start_main1_~g~0#1|) (<= |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) (<= |ULTIMATE.start_main1_~y~0#1| 127) (<= 0 (+ |ULTIMATE.start_main1_~y~0#1| 128)))' at error location [2023-12-02 17:28:48,445 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:28:48,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:28:48,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-12-02 17:28:48,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136941790] [2023-12-02 17:28:48,447 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-02 17:28:48,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 17:28:48,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:28:48,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 17:28:48,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=150, Unknown=2, NotChecked=24, Total=210 [2023-12-02 17:28:48,449 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 10 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:28:50,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 17:28:52,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 17:28:54,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 17:28:56,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 17:28:58,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-02 17:29:00,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 17:29:02,169 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main1_~x~0#1| 1))) (and (or (< |c_ULTIMATE.start_main1_~g~0#1| .cse0) (< |c_ULTIMATE.start_main1_~x~0#1| 1)) (or (and (exists ((|ULTIMATE.start_gcd_test_#res#1| Int)) (and (<= |c_ULTIMATE.start_main1_~g~0#1| |ULTIMATE.start_gcd_test_#res#1|) (= (mod (mod |c_ULTIMATE.start_main1_~x~0#1| |ULTIMATE.start_gcd_test_#res#1|) 256) 0) (<= |ULTIMATE.start_gcd_test_#res#1| 127) (not (= |ULTIMATE.start_gcd_test_#res#1| 0)))) (<= 0 |c_ULTIMATE.start_main1_~x~0#1|)) (and (let ((.cse1 (mod (* 255 |c_ULTIMATE.start_main1_~x~0#1|) 256))) (or (and (<= 128 .cse1) (let ((.cse2 (+ .cse1 (- 256)))) (or (exists ((|ULTIMATE.start_gcd_test_#res#1| Int)) (and (<= |c_ULTIMATE.start_main1_~g~0#1| |ULTIMATE.start_gcd_test_#res#1|) (= 0 (mod .cse2 |ULTIMATE.start_gcd_test_#res#1|)) (<= |ULTIMATE.start_gcd_test_#res#1| 127) (<= 0 |ULTIMATE.start_gcd_test_#res#1|) (not (= |ULTIMATE.start_gcd_test_#res#1| 0)))) (exists ((|ULTIMATE.start_gcd_test_#res#1| Int)) (and (<= |c_ULTIMATE.start_main1_~g~0#1| |ULTIMATE.start_gcd_test_#res#1|) (<= (+ |ULTIMATE.start_gcd_test_#res#1| 1) 0) (= 0 (mod .cse2 |ULTIMATE.start_gcd_test_#res#1|))))))) (and (<= .cse1 127) (exists ((|ULTIMATE.start_gcd_test_#res#1| Int)) (and (<= |c_ULTIMATE.start_main1_~g~0#1| |ULTIMATE.start_gcd_test_#res#1|) (<= |ULTIMATE.start_gcd_test_#res#1| 127) (= (mod (mod .cse1 |ULTIMATE.start_gcd_test_#res#1|) 256) 0) (not (= |ULTIMATE.start_gcd_test_#res#1| 0))))))) (<= .cse0 0))))) is different from true [2023-12-02 17:29:04,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-02 17:29:11,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2023-12-02 17:29:11,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:29:11,552 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2023-12-02 17:29:11,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 17:29:11,553 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-02 17:29:11,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:29:11,554 INFO L225 Difference]: With dead ends: 30 [2023-12-02 17:29:11,554 INFO L226 Difference]: Without dead ends: 24 [2023-12-02 17:29:11,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=46, Invalid=197, Unknown=5, NotChecked=58, Total=306 [2023-12-02 17:29:11,556 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 1 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2023-12-02 17:29:11,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 69 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 6 Unknown, 36 Unchecked, 16.4s Time] [2023-12-02 17:29:11,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-02 17:29:11,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-12-02 17:29:11,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-02 17:29:11,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2023-12-02 17:29:11,565 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 7 [2023-12-02 17:29:11,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:29:11,565 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2023-12-02 17:29:11,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:29:11,565 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2023-12-02 17:29:11,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 17:29:11,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:29:11,566 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-12-02 17:29:11,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6310314e-6612-4d84-a248-5b3f95a2b9d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 17:29:11,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6310314e-6612-4d84-a248-5b3f95a2b9d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:29:11,767 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:29:11,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:29:11,767 INFO L85 PathProgramCache]: Analyzing trace with hash -2117450257, now seen corresponding path program 2 times [2023-12-02 17:29:11,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:29:11,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935076847] [2023-12-02 17:29:11,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:29:11,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:29:11,777 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 17:29:11,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1725133749] [2023-12-02 17:29:11,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 17:29:11,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:29:11,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6310314e-6612-4d84-a248-5b3f95a2b9d6/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:29:11,779 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6310314e-6612-4d84-a248-5b3f95a2b9d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:29:11,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6310314e-6612-4d84-a248-5b3f95a2b9d6/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 17:29:11,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 17:29:11,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:29:11,966 WARN L260 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-02 17:29:11,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:29:21,511 WARN L293 SmtUtils]: Spent 5.72s on a formula simplification that was a NOOP. DAG size: 62 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:29:27,619 WARN L854 $PredicateComparison]: unable to prove that (and (let ((.cse7 (mod (* 255 |c_ULTIMATE.start_main1_~x~0#1|) 256))) (let ((.cse12 (<= (+ |c_ULTIMATE.start_gcd_test_~a#1| 1) 0)) (.cse0 (<= 0 |c_ULTIMATE.start_gcd_test_~a#1|)) (.cse5 (* |c_ULTIMATE.start_gcd_test_~a#1| 255)) (.cse6 (+ |c_ULTIMATE.start_gcd_test_~b#1| 256)) (.cse1 (<= 0 |c_ULTIMATE.start_main1_~x~0#1|)) (.cse8 (<= 128 .cse7)) (.cse9 (+ |c_ULTIMATE.start_gcd_test_~a#1| 256)) (.cse11 (+ .cse7 (- 256))) (.cse3 (<= .cse7 127)) (.cse2 (<= (+ |c_ULTIMATE.start_main1_~x~0#1| 1) 0))) (or (and .cse0 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (and (not (= |v_ULTIMATE.start_gcd_test_~a#1_32| 0)) (<= |v_ULTIMATE.start_gcd_test_~a#1_32| 127) (= (mod (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~a#1_32|) 256) |c_ULTIMATE.start_gcd_test_~a#1|) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|) (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_32| |c_ULTIMATE.start_gcd_test_~a#1|) 256) |c_ULTIMATE.start_gcd_test_~b#1|))) .cse1) (and .cse2 .cse3 .cse0 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse4 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= (mod (+ .cse4 .cse5) 256) .cse6) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (not (= .cse4 0)) (<= (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse4) 256) 127) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod .cse7 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256)))))) (and .cse2 (or (and .cse3 .cse0 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (and (not (= |v_ULTIMATE.start_gcd_test_~a#1_32| 0)) (<= |v_ULTIMATE.start_gcd_test_~a#1_32| 127) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod .cse7 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256)) (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_32| |c_ULTIMATE.start_gcd_test_~a#1|) 256) |c_ULTIMATE.start_gcd_test_~b#1|)))) (and .cse8 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse10 (mod .cse11 |v_ULTIMATE.start_gcd_test_~a#1_32|))) (and (not (= |v_ULTIMATE.start_gcd_test_~a#1_32| 0)) (<= |v_ULTIMATE.start_gcd_test_~a#1_32| 127) (= .cse9 (mod (+ .cse10 (* 255 |v_ULTIMATE.start_gcd_test_~a#1_32|)) 256)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|) (not (= .cse10 0)) (= (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_32| |c_ULTIMATE.start_gcd_test_~a#1|) 256) |c_ULTIMATE.start_gcd_test_~b#1|)))) .cse12))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse13 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= (mod (+ .cse13 .cse5) 256) .cse6) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (<= 128 (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse13) 256)) (= (mod (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~a#1_32|) 256) |c_ULTIMATE.start_gcd_test_~a#1|)))) .cse0 .cse1) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse14 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= (mod (+ .cse14 .cse5) 256) .cse6) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (not (= .cse14 0)) (<= (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse14) 256) 127) (= (mod (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~a#1_32|) 256) |c_ULTIMATE.start_gcd_test_~a#1|)))) .cse0 .cse1) (and .cse2 (or (and .cse8 .cse12 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse15 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (<= (mod (+ .cse15 .cse5) 256) 127) (not (= .cse15 0)) (= (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse15) 256) .cse6) (= .cse9 (mod (+ (mod .cse11 |v_ULTIMATE.start_gcd_test_~a#1_32|) |v_ULTIMATE.start_gcd_test_~a#1_32|) 256)))))) (and .cse8 .cse12 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse16 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| |c_ULTIMATE.start_gcd_test_~a#1|)) (.cse17 (mod .cse11 |v_ULTIMATE.start_gcd_test_~a#1_32|))) (and (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (= (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse16) 256) .cse6) (<= 128 (mod (+ .cse16 .cse5) 256)) (not (= .cse17 0)) (= .cse9 (mod (+ .cse17 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256)))))) (and .cse3 .cse0 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse18 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= (mod (+ .cse18 .cse5) 256) .cse6) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (<= 128 (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse18) 256)) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod .cse7 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256)))))))) (and (or (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (and (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_32| |c_ULTIMATE.start_gcd_test_~a#1|) 0) (= (mod (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~a#1_32|) 256) |c_ULTIMATE.start_gcd_test_~a#1|))) .cse1) (and (or (and .cse8 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse19 (mod .cse11 |v_ULTIMATE.start_gcd_test_~a#1_32|))) (and (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_32| |c_ULTIMATE.start_gcd_test_~a#1|) 0) (not (= .cse19 0)) (= .cse9 (mod (+ .cse19 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256)))))) (and .cse3 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (and (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (= (mod |v_ULTIMATE.start_gcd_test_~a#1_32| |c_ULTIMATE.start_gcd_test_~a#1|) 0) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod .cse7 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256)))))) .cse2)) (= |c_ULTIMATE.start_gcd_test_~b#1| 0))))) (not (= |c_ULTIMATE.start_gcd_test_~a#1| 0))) is different from false [2023-12-02 17:29:50,344 WARN L854 $PredicateComparison]: unable to prove that (and (not (= |c_ULTIMATE.start_gcd_test_~a#1| 0)) (let ((.cse6 (mod (* 255 |c_ULTIMATE.start_main1_~x~0#1|) 256))) (let ((.cse11 (<= 0 |c_ULTIMATE.start_main1_~x~0#1|)) (.cse1 (<= .cse6 127)) (.cse21 (<= 128 .cse6)) (.cse48 (= |c_ULTIMATE.start_gcd_test_~b#1| 0)) (.cse18 (+ |c_ULTIMATE.start_gcd_test_~b#1| 256)) (.cse20 (+ .cse6 (- 256))) (.cse0 (<= (+ |c_ULTIMATE.start_main1_~x~0#1| 1) 0))) (or (and (<= (+ |c_ULTIMATE.start_gcd_test_~a#1| 1) 0) (let ((.cse2 (+ |c_ULTIMATE.start_gcd_test_~a#1| 256))) (or (and .cse0 .cse1 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse4 (mod .cse6 |v_ULTIMATE.start_gcd_test_~a#1_32|))) (let ((.cse5 (mod .cse4 256))) (let ((.cse3 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse5))) (and (= .cse2 (mod (+ .cse3 (* 255 .cse4)) 256)) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (not (= .cse5 0)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod .cse5 |c_ULTIMATE.start_gcd_test_~a#1|) 256)) (<= 128 (mod (+ .cse3 .cse4) 256)))))))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse8 (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~a#1_32|))) (let ((.cse10 (mod .cse8 256))) (let ((.cse9 (mod .cse10 |c_ULTIMATE.start_gcd_test_~a#1|)) (.cse7 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse10))) (and (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (= .cse2 (mod (+ .cse7 (* 255 .cse8)) 256)) (= (mod .cse9 256) |c_ULTIMATE.start_gcd_test_~b#1|) (<= 128 (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse9) 256)) (not (= .cse7 0)) (<= (mod (+ .cse7 .cse8) 256) 127)))))) .cse11) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse13 (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~a#1_32|))) (let ((.cse14 (mod .cse13 256))) (let ((.cse12 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse14))) (and (<= 128 (mod (+ .cse12 .cse13) 256)) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (= .cse2 (mod (+ .cse12 (* 255 .cse13)) 256)) (not (= .cse14 0)) (= (mod (mod .cse14 |c_ULTIMATE.start_gcd_test_~a#1|) 256) |c_ULTIMATE.start_gcd_test_~b#1|)))))) .cse11) (and .cse0 (or (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse16 (mod .cse20 |v_ULTIMATE.start_gcd_test_~a#1_32|))) (let ((.cse19 (+ (- 256) (mod (+ .cse16 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256)))) (let ((.cse17 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse19)) (.cse15 (mod .cse19 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (not (= .cse15 0)) (<= 128 (mod (+ (* 255 .cse16) .cse17 (* 255 |v_ULTIMATE.start_gcd_test_~a#1_32|)) 256)) (= .cse2 (mod (+ .cse16 .cse17 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256)) (= .cse18 (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse15) 256))))))) .cse21) (and .cse21 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse22 (mod .cse20 |v_ULTIMATE.start_gcd_test_~a#1_32|))) (let ((.cse25 (+ (- 256) (mod (+ .cse22 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256)))) (let ((.cse23 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse25)) (.cse24 (mod .cse25 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (<= (mod (+ (* 255 .cse22) .cse23 (* 255 |v_ULTIMATE.start_gcd_test_~a#1_32|)) 256) 127) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (not (= .cse24 0)) (= .cse2 (mod (+ .cse22 .cse23 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256)) (= .cse18 (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse24) 256)))))))))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse27 (mod .cse6 |v_ULTIMATE.start_gcd_test_~a#1_32|))) (let ((.cse29 (mod .cse27 256))) (let ((.cse26 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse29)) (.cse28 (mod .cse29 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= .cse2 (mod (+ .cse26 (* 255 .cse27)) 256)) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (<= (mod (+ .cse26 .cse27) 256) 127) (not (= .cse26 0)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod .cse28 256)) (<= 128 (mod (+ .cse28 |c_ULTIMATE.start_gcd_test_~a#1|) 256))))))) .cse0 .cse1) (and (or (and .cse0 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse31 (mod .cse6 |v_ULTIMATE.start_gcd_test_~a#1_32|))) (let ((.cse32 (mod .cse31 256))) (let ((.cse30 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse32))) (and (= .cse2 (mod (+ .cse30 (* 255 .cse31)) 256)) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (<= (mod (+ .cse30 .cse31) 256) 127) (not (= .cse30 0)) (= (mod .cse32 |c_ULTIMATE.start_gcd_test_~a#1|) 0)))))) .cse1) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse34 (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~a#1_32|))) (let ((.cse35 (mod .cse34 256))) (let ((.cse33 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse35))) (and (<= 128 (mod (+ .cse33 .cse34) 256)) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (= .cse2 (mod (+ .cse33 (* 255 .cse34)) 256)) (not (= .cse35 0)) (= (mod .cse35 |c_ULTIMATE.start_gcd_test_~a#1|) 0)))))) .cse11) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse37 (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~a#1_32|))) (let ((.cse38 (mod .cse37 256))) (let ((.cse36 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse38))) (and (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (= .cse2 (mod (+ .cse36 (* 255 .cse37)) 256)) (not (= .cse36 0)) (<= (mod (+ .cse36 .cse37) 256) 127) (= (mod .cse38 |c_ULTIMATE.start_gcd_test_~a#1|) 0)))))) .cse11) (and .cse0 (or (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse40 (mod .cse6 |v_ULTIMATE.start_gcd_test_~a#1_32|))) (let ((.cse41 (mod .cse40 256))) (let ((.cse39 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse41))) (and (= .cse2 (mod (+ .cse39 (* 255 .cse40)) 256)) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (not (= .cse41 0)) (<= 128 (mod (+ .cse39 .cse40) 256)) (= (mod .cse41 |c_ULTIMATE.start_gcd_test_~a#1|) 0)))))) .cse1) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse43 (mod .cse20 |v_ULTIMATE.start_gcd_test_~a#1_32|))) (let ((.cse44 (+ (- 256) (mod (+ .cse43 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256)))) (let ((.cse42 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse44))) (and (not (= .cse42 0)) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (<= (mod (+ (* 255 .cse43) .cse42 (* 255 |v_ULTIMATE.start_gcd_test_~a#1_32|)) 256) 127) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (= (mod .cse44 |c_ULTIMATE.start_gcd_test_~a#1|) 0) (= .cse2 (mod (+ .cse43 .cse42 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256))))))) .cse21) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse45 (mod .cse20 |v_ULTIMATE.start_gcd_test_~a#1_32|))) (let ((.cse47 (+ (- 256) (mod (+ .cse45 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256)))) (let ((.cse46 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse47))) (and (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (<= 128 (mod (+ (* 255 .cse45) .cse46 (* 255 |v_ULTIMATE.start_gcd_test_~a#1_32|)) 256)) (= (mod .cse47 |c_ULTIMATE.start_gcd_test_~a#1|) 0) (= .cse2 (mod (+ .cse45 .cse46 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256)) (not (= .cse45 0))))))) .cse21)))) (<= 128 (mod |c_ULTIMATE.start_gcd_test_~a#1| 256)) .cse48)))) (and (<= 0 |c_ULTIMATE.start_gcd_test_~a#1|) (or (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse49 (mod (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~a#1_32|) 256))) (and (not (= .cse49 0)) (= (mod (mod .cse49 |c_ULTIMATE.start_gcd_test_~a#1|) 256) |c_ULTIMATE.start_gcd_test_~b#1|) (<= |v_ULTIMATE.start_gcd_test_~a#1_32| 127) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse49) 256)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|)))) .cse11) (and (or (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse50 (mod (mod .cse6 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256))) (and (<= |v_ULTIMATE.start_gcd_test_~a#1_32| 127) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse50) 256)) (not (= .cse50 0)) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod .cse50 |c_ULTIMATE.start_gcd_test_~a#1|) 256)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|)))) .cse1) (and .cse21 (let ((.cse52 (* |c_ULTIMATE.start_gcd_test_~a#1| 255))) (or (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse51 (+ (- 256) (mod (+ (mod .cse20 |v_ULTIMATE.start_gcd_test_~a#1_32|) (* 255 |v_ULTIMATE.start_gcd_test_~a#1_32|)) 256)))) (and (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse51) 256)) (<= |v_ULTIMATE.start_gcd_test_~a#1_32| 127) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|) (= (mod .cse51 |c_ULTIMATE.start_gcd_test_~a#1|) 0)))) .cse48 (<= 128 (mod .cse52 256))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse53 (+ (- 256) (mod (+ (mod .cse20 |v_ULTIMATE.start_gcd_test_~a#1_32|) (* 255 |v_ULTIMATE.start_gcd_test_~a#1_32|)) 256)))) (let ((.cse54 (mod .cse53 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse53) 256)) (not (= .cse54 0)) (<= |v_ULTIMATE.start_gcd_test_~a#1_32| 127) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|) (= .cse18 (mod (+ .cse52 .cse54) 256)))))))))) .cse0))))))) is different from false [2023-12-02 17:30:32,404 WARN L854 $PredicateComparison]: unable to prove that (and (let ((.cse47 (mod (* 255 |c_ULTIMATE.start_main1_~x~0#1|) 256))) (let ((.cse8 (<= (+ |c_ULTIMATE.start_gcd_test_~a#1| 1) 0)) (.cse2 (+ |c_ULTIMATE.start_gcd_test_~a#1| 256)) (.cse5 (+ .cse47 (- 256))) (.cse6 (<= 128 .cse47)) (.cse16 (= |c_ULTIMATE.start_gcd_test_~b#1| 0)) (.cse9 (+ |c_ULTIMATE.start_gcd_test_~b#1| 256)) (.cse11 (* |c_ULTIMATE.start_gcd_test_~a#1| 255)) (.cse7 (<= (+ |c_ULTIMATE.start_main1_~x~0#1| 1) 0)) (.cse53 (<= .cse47 127)) (.cse22 (<= 0 |c_ULTIMATE.start_main1_~x~0#1|)) (.cse21 (<= 0 |c_ULTIMATE.start_gcd_test_~a#1|))) (or (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse4 (+ (- 256) (mod (+ (mod .cse5 |v_ULTIMATE.start_gcd_test_~a#1_32|) (* 255 |v_ULTIMATE.start_gcd_test_~a#1_32|)) 256)))) (let ((.cse3 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse4))) (let ((.cse0 (mod .cse3 256))) (let ((.cse1 (mod .cse4 .cse0))) (and (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod .cse0 |c_ULTIMATE.start_gcd_test_~a#1|) 256)) (<= |v_ULTIMATE.start_gcd_test_~a#1_32| 127) (not (= .cse1 0)) (= .cse2 (mod (+ .cse1 (* .cse3 255)) 256)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|) (not (= .cse0 0)))))))) .cse6 .cse7 .cse8) (and (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse15 (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~a#1_32|))) (let ((.cse12 (mod .cse15 256))) (let ((.cse14 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse12))) (let ((.cse13 (+ (- 256) (mod (+ .cse14 (* 255 .cse15)) 256)))) (let ((.cse10 (mod .cse13 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (= .cse9 (mod (+ .cse10 .cse11) 256)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (= (mod (mod .cse12 .cse13) 256) |c_ULTIMATE.start_gcd_test_~a#1|) (<= (mod (+ .cse14 .cse15) 256) 127) (not (= .cse10 0))))))))) (and .cse16 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse20 (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~a#1_32|))) (let ((.cse17 (mod .cse20 256))) (let ((.cse19 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse17))) (let ((.cse18 (+ (- 256) (mod (+ .cse19 (* 255 .cse20)) 256)))) (and (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (= (mod (mod .cse17 .cse18) 256) |c_ULTIMATE.start_gcd_test_~a#1|) (<= (mod (+ .cse19 .cse20) 256) 127) (= (mod .cse18 |c_ULTIMATE.start_gcd_test_~a#1|) 0))))))))) .cse21 .cse22) (and .cse7 .cse8 (or (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse26 (mod .cse5 |v_ULTIMATE.start_gcd_test_~a#1_32|))) (let ((.cse24 (+ (- 256) (mod (+ .cse26 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256)))) (let ((.cse27 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse24))) (let ((.cse25 (+ (mod (+ .cse26 .cse27 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256) (- 256)))) (let ((.cse23 (mod .cse25 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (not (= .cse23 0)) (= .cse9 (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse23) 256)) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (= .cse2 (mod (+ (mod .cse24 .cse25) .cse26 .cse27 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (<= 128 (mod (+ (* 255 .cse26) .cse27 (* 255 |v_ULTIMATE.start_gcd_test_~a#1_32|)) 256))))))))) .cse6) (and .cse16 (or (and .cse6 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse30 (mod .cse5 |v_ULTIMATE.start_gcd_test_~a#1_32|))) (let ((.cse32 (+ (- 256) (mod (+ .cse30 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256)))) (let ((.cse31 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse32))) (let ((.cse28 (+ (mod (+ .cse30 .cse31 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256) (- 256)))) (let ((.cse29 (mod .cse32 .cse28))) (and (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (= (mod .cse28 |c_ULTIMATE.start_gcd_test_~a#1|) 0) (= .cse2 (mod (+ .cse29 .cse30 .cse31 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256)) (<= (mod (+ (* 255 .cse30) .cse31 (* 255 |v_ULTIMATE.start_gcd_test_~a#1_32|)) 256) 127) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (not (= .cse29 0)))))))))) (and .cse6 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse35 (mod .cse5 |v_ULTIMATE.start_gcd_test_~a#1_32|))) (let ((.cse37 (+ (- 256) (mod (+ .cse35 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256)))) (let ((.cse36 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse37))) (let ((.cse33 (+ (mod (+ .cse35 .cse36 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256) (- 256)))) (let ((.cse34 (mod .cse37 .cse33))) (and (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (= (mod .cse33 |c_ULTIMATE.start_gcd_test_~a#1|) 0) (= .cse2 (mod (+ .cse34 .cse35 .cse36 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (not (= .cse34 0)) (<= 128 (mod (+ (* 255 .cse35) .cse36 (* 255 |v_ULTIMATE.start_gcd_test_~a#1_32|)) 256)))))))))))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse41 (mod .cse5 |v_ULTIMATE.start_gcd_test_~a#1_32|))) (let ((.cse39 (+ (- 256) (mod (+ .cse41 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256)))) (let ((.cse42 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse39))) (let ((.cse40 (+ (mod (+ .cse41 .cse42 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256) (- 256)))) (let ((.cse38 (mod .cse40 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (not (= .cse38 0)) (= .cse9 (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse38) 256)) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (= .cse2 (mod (+ (mod .cse39 .cse40) .cse41 .cse42 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256)) (<= (mod (+ (* 255 .cse41) .cse42 (* 255 |v_ULTIMATE.start_gcd_test_~a#1_32|)) 256) 127) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0)))))))) .cse6))) (and (or (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse46 (mod .cse47 |v_ULTIMATE.start_gcd_test_~a#1_32|))) (let ((.cse44 (mod .cse46 256))) (let ((.cse45 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse44))) (let ((.cse43 (+ (mod (+ .cse45 (* 255 .cse46)) 256) (- 256)))) (and (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (= (mod .cse43 |c_ULTIMATE.start_gcd_test_~a#1|) 0) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod .cse44 .cse43) 256)) (<= 128 (mod (+ .cse45 .cse46) 256)))))))) .cse16) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse52 (mod .cse47 |v_ULTIMATE.start_gcd_test_~a#1_32|))) (let ((.cse49 (mod .cse52 256))) (let ((.cse51 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse49))) (let ((.cse50 (+ (mod (+ .cse51 (* 255 .cse52)) 256) (- 256)))) (let ((.cse48 (mod .cse50 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (not (= .cse48 0)) (= .cse9 (mod (+ .cse11 .cse48) 256)) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod .cse49 .cse50) 256)) (<= 128 (mod (+ .cse51 .cse52) 256)))))))))) .cse7 .cse53 .cse21) (and (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse55 (mod .cse47 |v_ULTIMATE.start_gcd_test_~a#1_32|))) (let ((.cse57 (mod .cse55 256))) (let ((.cse54 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse57))) (let ((.cse58 (+ (mod (+ .cse54 (* 255 .cse55)) 256) (- 256)))) (let ((.cse56 (mod .cse58 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (<= (mod (+ .cse54 .cse55) 256) 127) (not (= .cse56 0)) (= .cse9 (mod (+ .cse11 .cse56) 256)) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod .cse57 .cse58) 256))))))))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse61 (mod .cse47 |v_ULTIMATE.start_gcd_test_~a#1_32|))) (let ((.cse62 (mod .cse61 256))) (let ((.cse60 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse62))) (let ((.cse59 (+ (mod (+ .cse60 (* 255 .cse61)) 256) (- 256)))) (and (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (= (mod .cse59 |c_ULTIMATE.start_gcd_test_~a#1|) 0) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (<= (mod (+ .cse60 .cse61) 256) 127) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod .cse62 .cse59) 256)))))))) .cse16)) .cse7 .cse53 .cse21) (and (or (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse64 (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~a#1_32|))) (let ((.cse65 (mod .cse64 256))) (let ((.cse63 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse65))) (let ((.cse66 (+ (- 256) (mod (+ .cse63 (* 255 .cse64)) 256)))) (and (<= 128 (mod (+ .cse63 .cse64) 256)) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (= (mod (mod .cse65 .cse66) 256) |c_ULTIMATE.start_gcd_test_~a#1|) (= (mod .cse66 |c_ULTIMATE.start_gcd_test_~a#1|) 0))))))) .cse16) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse68 (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~a#1_32|))) (let ((.cse70 (mod .cse68 256))) (let ((.cse67 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse70))) (let ((.cse71 (+ (- 256) (mod (+ .cse67 (* 255 .cse68)) 256)))) (let ((.cse69 (mod .cse71 |c_ULTIMATE.start_gcd_test_~a#1|))) (and (<= 128 (mod (+ .cse67 .cse68) 256)) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (= .cse9 (mod (+ .cse69 .cse11) 256)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (= (mod (mod .cse70 .cse71) 256) |c_ULTIMATE.start_gcd_test_~a#1|) (not (= .cse69 0)))))))))) .cse21 .cse22) (and (or (and .cse7 .cse53 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse72 (mod (mod .cse47 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256))) (let ((.cse73 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse72) 256))) (and (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod .cse72 .cse73) 256)) (not (= .cse73 0)) (= (mod (mod .cse73 |c_ULTIMATE.start_gcd_test_~a#1|) 256) |c_ULTIMATE.start_gcd_test_~b#1|) (<= |v_ULTIMATE.start_gcd_test_~a#1_32| 127) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|)))))) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse75 (mod (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~a#1_32|) 256))) (let ((.cse74 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse75) 256))) (and (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod .cse74 |c_ULTIMATE.start_gcd_test_~a#1|) 256)) (<= |v_ULTIMATE.start_gcd_test_~a#1_32| 127) (= (mod (mod .cse75 .cse74) 256) |c_ULTIMATE.start_gcd_test_~a#1|) (not (= .cse74 0)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|))))) .cse22)) .cse21)))) (not (= |c_ULTIMATE.start_gcd_test_~a#1| 0))) is different from false [2023-12-02 17:30:54,149 WARN L854 $PredicateComparison]: unable to prove that (and (let ((.cse20 (mod (* 255 |c_ULTIMATE.start_main1_~x~0#1|) 256))) (let ((.cse17 (<= 0 |c_ULTIMATE.start_main1_~x~0#1|)) (.cse0 (<= (+ |c_ULTIMATE.start_main1_~g~0#1| 1) 0)) (.cse7 (+ 256 |c_ULTIMATE.start_main1_~g~0#1|)) (.cse9 (+ .cse20 (- 256))) (.cse2 (<= 128 .cse20)) (.cse1 (<= (+ |c_ULTIMATE.start_main1_~x~0#1| 1) 0)) (.cse21 (<= .cse20 127)) (.cse22 (<= 0 |c_ULTIMATE.start_main1_~g~0#1|))) (or (and .cse0 .cse1 (or (and .cse2 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse5 (mod .cse9 |v_ULTIMATE.start_gcd_test_~a#1_32|))) (let ((.cse8 (+ (- 256) (mod (+ .cse5 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256)))) (let ((.cse6 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse8))) (let ((.cse4 (+ (mod (+ .cse5 .cse6 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256) (- 256)))) (let ((.cse3 (mod .cse8 .cse4))) (and (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (not (= .cse3 0)) (= (mod .cse4 |c_ULTIMATE.start_main1_~g~0#1|) 0) (<= 128 (mod (+ (* 255 .cse5) .cse6 (* 255 |v_ULTIMATE.start_gcd_test_~a#1_32|)) 256)) (= .cse7 (mod (+ .cse3 .cse5 .cse6 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256)))))))))) (and .cse2 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse10 (mod .cse9 |v_ULTIMATE.start_gcd_test_~a#1_32|))) (let ((.cse14 (+ (- 256) (mod (+ .cse10 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256)))) (let ((.cse11 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse14))) (let ((.cse13 (+ (mod (+ .cse10 .cse11 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256) (- 256)))) (let ((.cse12 (mod .cse14 .cse13))) (and (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (<= (mod (+ (* 255 .cse10) .cse11 (* 255 |v_ULTIMATE.start_gcd_test_~a#1_32|)) 256) 127) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (not (= .cse12 0)) (= (mod .cse13 |c_ULTIMATE.start_main1_~g~0#1|) 0) (= .cse7 (mod (+ .cse12 .cse10 .cse11 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256)))))))))))) (and (or (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse15 (mod (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~a#1_32|) 256))) (let ((.cse16 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse15) 256))) (and (= (mod (mod .cse15 .cse16) 256) |c_ULTIMATE.start_main1_~g~0#1|) (<= |v_ULTIMATE.start_gcd_test_~a#1_32| 127) (not (= .cse16 0)) (= (mod (mod .cse16 |c_ULTIMATE.start_main1_~g~0#1|) 256) 0) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|))))) .cse17) (and .cse1 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse18 (mod (mod .cse20 |v_ULTIMATE.start_gcd_test_~a#1_32|) 256))) (let ((.cse19 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse18) 256))) (and (= (mod (mod .cse18 .cse19) 256) |c_ULTIMATE.start_main1_~g~0#1|) (not (= .cse19 0)) (<= |v_ULTIMATE.start_gcd_test_~a#1_32| 127) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|) (= (mod (mod .cse19 |c_ULTIMATE.start_main1_~g~0#1|) 256) 0))))) .cse21)) .cse22) (and (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse26 (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~a#1_32|))) (let ((.cse23 (mod .cse26 256))) (let ((.cse25 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse23))) (let ((.cse24 (+ (- 256) (mod (+ .cse25 (* 255 .cse26)) 256)))) (and (= (mod (mod .cse23 .cse24) 256) |c_ULTIMATE.start_main1_~g~0#1|) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (= 0 (mod .cse24 |c_ULTIMATE.start_main1_~g~0#1|)) (<= (mod (+ .cse25 .cse26) 256) 127))))))) .cse22 .cse17) (and .cse1 .cse21 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse30 (mod .cse20 |v_ULTIMATE.start_gcd_test_~a#1_32|))) (let ((.cse27 (mod .cse30 256))) (let ((.cse29 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse27))) (let ((.cse28 (+ (mod (+ .cse29 (* 255 .cse30)) 256) (- 256)))) (and (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (= |c_ULTIMATE.start_main1_~g~0#1| (mod (mod .cse27 .cse28) 256)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (<= (mod (+ .cse29 .cse30) 256) 127) (= (mod .cse28 |c_ULTIMATE.start_main1_~g~0#1|) 0))))))) .cse22) (and .cse22 .cse17 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse34 (mod |c_ULTIMATE.start_main1_~x~0#1| |v_ULTIMATE.start_gcd_test_~a#1_32|))) (let ((.cse31 (mod .cse34 256))) (let ((.cse33 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse31))) (let ((.cse32 (+ (- 256) (mod (+ .cse33 (* 255 .cse34)) 256)))) (and (= (mod (mod .cse31 .cse32) 256) |c_ULTIMATE.start_main1_~g~0#1|) (<= 128 (mod (+ .cse33 .cse34) 256)) (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (= 0 (mod .cse32 |c_ULTIMATE.start_main1_~g~0#1|))))))))) (and .cse0 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse38 (+ (- 256) (mod (+ (mod .cse9 |v_ULTIMATE.start_gcd_test_~a#1_32|) (* 255 |v_ULTIMATE.start_gcd_test_~a#1_32|)) 256)))) (let ((.cse37 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse38))) (let ((.cse35 (mod .cse37 256))) (let ((.cse36 (mod .cse38 .cse35))) (and (= (mod (mod .cse35 |c_ULTIMATE.start_main1_~g~0#1|) 256) 0) (<= |v_ULTIMATE.start_gcd_test_~a#1_32| 127) (not (= .cse36 0)) (<= 0 |v_ULTIMATE.start_gcd_test_~a#1_32|) (= .cse7 (mod (+ .cse36 (* .cse37 255)) 256)) (not (= .cse35 0)))))))) .cse2 .cse1) (and .cse1 .cse21 (exists ((|v_ULTIMATE.start_gcd_test_~a#1_32| Int)) (let ((.cse42 (mod .cse20 |v_ULTIMATE.start_gcd_test_~a#1_32|))) (let ((.cse39 (mod .cse42 256))) (let ((.cse41 (mod |v_ULTIMATE.start_gcd_test_~a#1_32| .cse39))) (let ((.cse40 (+ (mod (+ .cse41 (* 255 .cse42)) 256) (- 256)))) (and (<= 0 (+ 128 |v_ULTIMATE.start_gcd_test_~a#1_32|)) (= |c_ULTIMATE.start_main1_~g~0#1| (mod (mod .cse39 .cse40) 256)) (<= (+ |v_ULTIMATE.start_gcd_test_~a#1_32| 1) 0) (= (mod .cse40 |c_ULTIMATE.start_main1_~g~0#1|) 0) (<= 128 (mod (+ .cse41 .cse42) 256)))))))) .cse22)))) (not (= |c_ULTIMATE.start_main1_~g~0#1| 0)) (<= |c_ULTIMATE.start_main1_~g~0#1| 127)) is different from false [2023-12-02 17:31:02,959 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2023-12-02 17:31:02,959 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:33:16,805 WARN L293 SmtUtils]: Spent 1.22m on a formula simplification. DAG size of input: 87 DAG size of output: 56 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 17:37:07,911 WARN L876 $PredicateComparison]: unable to prove that (or (let ((.cse24 (mod |c_ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse26 (mod (+ .cse24 (* |c_ULTIMATE.start_gcd_test_~b#1| 255)) 256))) (let ((.cse27 (+ (- 256) .cse26)) (.cse23 (+ |c_ULTIMATE.start_gcd_test_~a#1| 1)) (.cse14 (+ |c_ULTIMATE.start_main1_~x~0#1| 1)) (.cse29 (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse26) 256))) (let ((.cse25 (mod (+ .cse24 |c_ULTIMATE.start_gcd_test_~b#1|) 256)) (.cse19 (= .cse26 0)) (.cse20 (not (= (mod (mod .cse26 .cse29) 256) 0))) (.cse21 (< .cse29 .cse14)) (.cse12 (< 0 .cse23)) (.cse28 (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse27) 256))) (let ((.cse7 (< .cse26 128)) (.cse10 (< .cse28 .cse14)) (.cse11 (not (= (mod (mod .cse27 .cse28) 256) 0))) (.cse6 (< 127 .cse26)) (.cse5 (or .cse19 .cse20 .cse21 .cse12)) (.cse9 (< 127 .cse25)) (.cse2 (< |c_ULTIMATE.start_gcd_test_~b#1| 0)) (.cse3 (< .cse25 128)) (.cse0 (mod .cse24 256))) (and (or (< .cse0 128) (let ((.cse4 (let ((.cse15 (+ (- 256) .cse0))) (let ((.cse13 (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse15) 256))) (or (< |c_ULTIMATE.start_gcd_test_~a#1| 0) (< .cse13 .cse14) (not (= 0 (mod (mod .cse15 .cse13) 256)))))))) (and (or (let ((.cse1 (and .cse4 .cse5))) (and (or .cse1 .cse2) (or .cse1 .cse2 .cse3))) .cse6) (or .cse7 (let ((.cse8 (and (or .cse10 .cse11 .cse12) .cse4))) (and (or .cse8 .cse2 .cse3) (or .cse8 .cse2 .cse9))))))) (or (< 127 .cse0) (let ((.cse18 (= .cse24 0))) (let ((.cse17 (let ((.cse22 (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse0) 256))) (or (not (= (mod (mod .cse0 .cse22) 256) 0)) (< .cse22 .cse14) (and (<= .cse23 0) (not .cse18)) (= .cse0 0))))) (and (or .cse7 (let ((.cse16 (and .cse17 (or .cse10 .cse18 .cse11 .cse12)))) (and (or .cse16 .cse2 .cse9) (or .cse16 .cse2 .cse3)))) (or .cse6 (and (or (and .cse17 .cse5) .cse2 .cse9) (or (and .cse17 (or .cse18 .cse19 .cse20 .cse21 .cse12)) .cse2 .cse3))))))))))))) (= |c_ULTIMATE.start_gcd_test_~b#1| 0) (< |c_ULTIMATE.start_main1_~x~0#1| 1)) is different from true