./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_3+newton_3_7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/gcd_3+newton_3_7.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f5a5fcfdef398824c80e5dd00ccb13245b1aba31a53b04be2e0e92d8a739e53d --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 20:30:28,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 20:30:28,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 20:30:28,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 20:30:28,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 20:30:28,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 20:30:28,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 20:30:28,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 20:30:28,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 20:30:28,308 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 20:30:28,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 20:30:28,311 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 20:30:28,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 20:30:28,317 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 20:30:28,318 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 20:30:28,320 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 20:30:28,322 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 20:30:28,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 20:30:28,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 20:30:28,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 20:30:28,332 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 20:30:28,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 20:30:28,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 20:30:28,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 20:30:28,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 20:30:28,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 20:30:28,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 20:30:28,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 20:30:28,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 20:30:28,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 20:30:28,344 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 20:30:28,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 20:30:28,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 20:30:28,347 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 20:30:28,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 20:30:28,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 20:30:28,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 20:30:28,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 20:30:28,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 20:30:28,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 20:30:28,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 20:30:28,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 20:30:28,352 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 20:30:28,382 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 20:30:28,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 20:30:28,383 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 20:30:28,384 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 20:30:28,384 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 20:30:28,385 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 20:30:28,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 20:30:28,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 20:30:28,385 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 20:30:28,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 20:30:28,387 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 20:30:28,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 20:30:28,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 20:30:28,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 20:30:28,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 20:30:28,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 20:30:28,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 20:30:28,388 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 20:30:28,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 20:30:28,388 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 20:30:28,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 20:30:28,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 20:30:28,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 20:30:28,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 20:30:28,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:30:28,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 20:30:28,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 20:30:28,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 20:30:28,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 20:30:28,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 20:30:28,391 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 20:30:28,391 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 20:30:28,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 20:30:28,391 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5a5fcfdef398824c80e5dd00ccb13245b1aba31a53b04be2e0e92d8a739e53d [2022-07-13 20:30:28,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 20:30:28,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 20:30:28,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 20:30:28,637 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 20:30:28,638 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 20:30:28,639 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_3+newton_3_7.i [2022-07-13 20:30:28,695 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e350c9957/245e9860da3040f89e9eac55e8329282/FLAG9319dc454 [2022-07-13 20:30:29,049 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 20:30:29,050 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_3_7.i [2022-07-13 20:30:29,062 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e350c9957/245e9860da3040f89e9eac55e8329282/FLAG9319dc454 [2022-07-13 20:30:29,481 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e350c9957/245e9860da3040f89e9eac55e8329282 [2022-07-13 20:30:29,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 20:30:29,484 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 20:30:29,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 20:30:29,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 20:30:29,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 20:30:29,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:30:29" (1/1) ... [2022-07-13 20:30:29,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d6f0e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:30:29, skipping insertion in model container [2022-07-13 20:30:29,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:30:29" (1/1) ... [2022-07-13 20:30:29,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 20:30:29,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 20:30:29,643 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_3_7.i[1226,1239] [2022-07-13 20:30:29,665 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_3_7.i[2862,2875] [2022-07-13 20:30:29,666 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:30:29,673 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 20:30:29,683 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_3_7.i[1226,1239] [2022-07-13 20:30:29,693 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_3_7.i[2862,2875] [2022-07-13 20:30:29,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:30:29,706 INFO L208 MainTranslator]: Completed translation [2022-07-13 20:30:29,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:30:29 WrapperNode [2022-07-13 20:30:29,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 20:30:29,707 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 20:30:29,708 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 20:30:29,708 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 20:30:29,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:30:29" (1/1) ... [2022-07-13 20:30:29,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:30:29" (1/1) ... [2022-07-13 20:30:29,736 INFO L137 Inliner]: procedures = 27, calls = 18, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 82 [2022-07-13 20:30:29,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 20:30:29,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 20:30:29,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 20:30:29,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 20:30:29,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:30:29" (1/1) ... [2022-07-13 20:30:29,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:30:29" (1/1) ... [2022-07-13 20:30:29,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:30:29" (1/1) ... [2022-07-13 20:30:29,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:30:29" (1/1) ... [2022-07-13 20:30:29,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:30:29" (1/1) ... [2022-07-13 20:30:29,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:30:29" (1/1) ... [2022-07-13 20:30:29,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:30:29" (1/1) ... [2022-07-13 20:30:29,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 20:30:29,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 20:30:29,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 20:30:29,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 20:30:29,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:30:29" (1/1) ... [2022-07-13 20:30:29,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:30:29,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:30:29,791 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 20:30:29,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 20:30:29,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 20:30:29,820 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-07-13 20:30:29,820 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-07-13 20:30:29,820 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-07-13 20:30:29,820 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-07-13 20:30:29,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 20:30:29,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 20:30:29,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 20:30:29,872 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 20:30:29,873 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 20:30:29,997 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 20:30:30,001 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 20:30:30,002 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 20:30:30,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:30:30 BoogieIcfgContainer [2022-07-13 20:30:30,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 20:30:30,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 20:30:30,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 20:30:30,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 20:30:30,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 08:30:29" (1/3) ... [2022-07-13 20:30:30,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76bdde6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:30:30, skipping insertion in model container [2022-07-13 20:30:30,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:30:29" (2/3) ... [2022-07-13 20:30:30,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76bdde6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:30:30, skipping insertion in model container [2022-07-13 20:30:30,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:30:30" (3/3) ... [2022-07-13 20:30:30,030 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_3_7.i [2022-07-13 20:30:30,051 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 20:30:30,051 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 20:30:30,094 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 20:30:30,100 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@564cfb20, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@61583a44 [2022-07-13 20:30:30,100 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 20:30:30,104 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-13 20:30:30,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-13 20:30:30,112 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:30:30,112 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:30:30,112 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:30:30,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:30:30,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1709385323, now seen corresponding path program 1 times [2022-07-13 20:30:30,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:30:30,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501339629] [2022-07-13 20:30:30,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:30:30,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:30:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:30:30,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:30:30,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:30:30,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501339629] [2022-07-13 20:30:30,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501339629] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:30:30,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:30:30,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 20:30:30,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701168946] [2022-07-13 20:30:30,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:30:30,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 20:30:30,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:30:30,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 20:30:30,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 20:30:30,429 INFO L87 Difference]: Start difference. First operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2022-07-13 20:30:30,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:30:30,498 INFO L93 Difference]: Finished difference Result 96 states and 120 transitions. [2022-07-13 20:30:30,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 20:30:30,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 11 [2022-07-13 20:30:30,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:30:30,511 INFO L225 Difference]: With dead ends: 96 [2022-07-13 20:30:30,511 INFO L226 Difference]: Without dead ends: 39 [2022-07-13 20:30:30,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 20:30:30,515 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 23 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:30:30,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 134 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:30:30,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-07-13 20:30:30,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2022-07-13 20:30:30,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-13 20:30:30,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2022-07-13 20:30:30,545 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 11 [2022-07-13 20:30:30,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:30:30,546 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2022-07-13 20:30:30,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2022-07-13 20:30:30,546 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2022-07-13 20:30:30,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-13 20:30:30,547 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:30:30,548 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:30:30,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 20:30:30,548 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:30:30,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:30:30,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1776235347, now seen corresponding path program 1 times [2022-07-13 20:30:30,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:30:30,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768183929] [2022-07-13 20:30:30,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:30:30,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:30:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:30:30,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:30:30,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:30:30,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768183929] [2022-07-13 20:30:30,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768183929] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:30:30,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:30:30,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 20:30:30,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386172608] [2022-07-13 20:30:30,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:30:30,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 20:30:30,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:30:30,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 20:30:30,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:30:30,611 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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) [2022-07-13 20:30:30,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:30:30,665 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-07-13 20:30:30,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 20:30:30,666 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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 11 [2022-07-13 20:30:30,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:30:30,667 INFO L225 Difference]: With dead ends: 39 [2022-07-13 20:30:30,667 INFO L226 Difference]: Without dead ends: 33 [2022-07-13 20:30:30,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 20:30:30,669 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:30:30,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 155 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:30:30,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-07-13 20:30:30,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-07-13 20:30:30,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-13 20:30:30,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2022-07-13 20:30:30,675 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 11 [2022-07-13 20:30:30,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:30:30,676 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2022-07-13 20:30:30,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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) [2022-07-13 20:30:30,676 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2022-07-13 20:30:30,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-13 20:30:30,677 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:30:30,677 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:30:30,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 20:30:30,678 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:30:30,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:30:30,678 INFO L85 PathProgramCache]: Analyzing trace with hash 830014046, now seen corresponding path program 1 times [2022-07-13 20:30:30,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:30:30,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680141262] [2022-07-13 20:30:30,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:30:30,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:30:30,690 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 20:30:30,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1825855633] [2022-07-13 20:30:30,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:30:30,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:30:30,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:30:30,693 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:30:30,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 20:30:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:30:30,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-13 20:30:30,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:30:47,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:30:47,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 20:30:52,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:30:52,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:30:52,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680141262] [2022-07-13 20:30:52,229 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 20:30:52,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825855633] [2022-07-13 20:30:52,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825855633] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 20:30:52,229 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 20:30:52,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-07-13 20:30:52,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829161178] [2022-07-13 20:30:52,230 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 20:30:52,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-13 20:30:52,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:30:52,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-13 20:30:52,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=214, Unknown=4, NotChecked=0, Total=272 [2022-07-13 20:30:52,232 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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) [2022-07-13 20:30:52,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:30:52,395 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2022-07-13 20:30:52,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 20:30:52,396 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 12 [2022-07-13 20:30:52,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:30:52,397 INFO L225 Difference]: With dead ends: 41 [2022-07-13 20:30:52,397 INFO L226 Difference]: Without dead ends: 35 [2022-07-13 20:30:52,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=63, Invalid=239, Unknown=4, NotChecked=0, Total=306 [2022-07-13 20:30:52,398 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:30:52,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 293 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 17 Unchecked, 0.0s Time] [2022-07-13 20:30:52,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-07-13 20:30:52,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2022-07-13 20:30:52,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-13 20:30:52,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2022-07-13 20:30:52,405 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 12 [2022-07-13 20:30:52,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:30:52,406 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2022-07-13 20:30:52,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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) [2022-07-13 20:30:52,406 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2022-07-13 20:30:52,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-13 20:30:52,407 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:30:52,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:30:52,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 20:30:52,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:30:52,612 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:30:52,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:30:52,612 INFO L85 PathProgramCache]: Analyzing trace with hash 20667420, now seen corresponding path program 1 times [2022-07-13 20:30:52,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:30:52,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118693396] [2022-07-13 20:30:52,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:30:52,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:30:52,620 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 20:30:52,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [714425968] [2022-07-13 20:30:52,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:30:52,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:30:52,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:30:52,622 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:30:52,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 20:30:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:30:52,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-13 20:30:52,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:31:09,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:31:09,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 20:31:17,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:31:17,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:31:17,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118693396] [2022-07-13 20:31:17,257 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 20:31:17,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714425968] [2022-07-13 20:31:17,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714425968] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 20:31:17,257 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 20:31:17,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2022-07-13 20:31:17,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520815434] [2022-07-13 20:31:17,258 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 20:31:17,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 20:31:17,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:31:17,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 20:31:17,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=178, Unknown=9, NotChecked=0, Total=240 [2022-07-13 20:31:17,259 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 16 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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) [2022-07-13 20:31:17,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:31:17,889 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2022-07-13 20:31:17,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 20:31:17,889 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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 12 [2022-07-13 20:31:17,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:31:17,890 INFO L225 Difference]: With dead ends: 46 [2022-07-13 20:31:17,890 INFO L226 Difference]: Without dead ends: 37 [2022-07-13 20:31:17,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 24.2s TimeCoverageRelationStatistics Valid=62, Invalid=201, Unknown=9, NotChecked=0, Total=272 [2022-07-13 20:31:17,892 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 20:31:17,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 281 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 36 Unchecked, 0.2s Time] [2022-07-13 20:31:17,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-07-13 20:31:17,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2022-07-13 20:31:17,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 25 states have (on average 1.12) internal successors, (28), 26 states have internal predecessors, (28), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-13 20:31:17,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2022-07-13 20:31:17,899 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 12 [2022-07-13 20:31:17,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:31:17,900 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2022-07-13 20:31:17,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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) [2022-07-13 20:31:17,900 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2022-07-13 20:31:17,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-13 20:31:17,901 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:31:17,901 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:31:17,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 20:31:18,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-13 20:31:18,104 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:31:18,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:31:18,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1518646018, now seen corresponding path program 2 times [2022-07-13 20:31:18,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:31:18,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185947047] [2022-07-13 20:31:18,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:31:18,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:31:18,117 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 20:31:18,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1078193564] [2022-07-13 20:31:18,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 20:31:18,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:31:18,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:31:18,119 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:31:18,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 20:31:18,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 20:31:18,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 20:31:18,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 37 conjunts are in the unsatisfiable core [2022-07-13 20:31:18,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:32:37,823 WARN L233 SmtUtils]: Spent 6.08s on a formula simplification. DAG size of input: 53 DAG size of output: 52 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-13 20:32:43,547 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:32:43,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 20:33:11,822 WARN L855 $PredicateComparison]: unable to prove that (or (<= |c_ULTIMATE.start_main1_~x~0#1| 0) (let ((.cse20 (mod |c_ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse24 (mod (+ .cse20 |c_ULTIMATE.start_gcd_test_~b#1|) 256)) (.cse23 (mod (+ .cse20 (* |c_ULTIMATE.start_gcd_test_~b#1| 255)) 256))) (let ((.cse21 (<= .cse23 127)) (.cse19 (< |c_ULTIMATE.start_gcd_test_~a#1| 0)) (.cse6 (< |c_ULTIMATE.start_gcd_test_~b#1| 0)) (.cse10 (<= .cse24 127)) (.cse18 (mod .cse20 256))) (let ((.cse0 (<= .cse18 127)) (.cse9 (not .cse10)) (.cse3 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse24) 256) 0))) (.cse1 (not .cse6)) (.cse5 (<= .cse24 |c_ULTIMATE.start_main1_~x~0#1|)) (.cse7 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse23) 256) 0))) (.cse4 (not .cse19)) (.cse8 (<= .cse23 |c_ULTIMATE.start_main1_~x~0#1|)) (.cse13 (not .cse21))) (and (or (not .cse0) (let ((.cse12 (= .cse20 0))) (let ((.cse15 (<= .cse18 |c_ULTIMATE.start_main1_~x~0#1|)) (.cse16 (and .cse19 (not .cse12))) (.cse17 (not (= (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse18) 256) 0)))) (let ((.cse11 (or .cse1 .cse15 .cse16 .cse17)) (.cse14 (or .cse15 .cse16 .cse6 .cse17)) (.cse2 (or .cse15 .cse16 .cse17))) (and (or (and (or (and (or .cse1 (and .cse2 (or .cse3 .cse4 .cse5))) (or .cse6 (and .cse2 (or .cse7 .cse4 .cse8)))) .cse9) (or .cse10 (and .cse11 (or .cse6 (and .cse2 (or .cse12 .cse7 .cse4 .cse8)))))) .cse13) (or (and .cse11 .cse14) .cse10) (or (and .cse14 (or .cse1 (and .cse2 (or .cse3 .cse12 .cse4 .cse5)))) .cse9)))))) (or .cse0 (and (or .cse3 .cse1 .cse21 .cse9 .cse4 .cse5) (or (let ((.cse22 (or .cse7 .cse6 .cse4 .cse8))) (and (or .cse9 (and (or .cse3 .cse1 .cse4 .cse5) .cse22)) .cse22)) .cse13)))))))) (= |c_ULTIMATE.start_gcd_test_~b#1| 0)) is different from true [2022-07-13 20:34:35,279 WARN L855 $PredicateComparison]: unable to prove that (or (<= |c_ULTIMATE.start_main1_~x~0#1| 0) (let ((.cse24 (mod |c_ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse28 (mod (+ .cse24 (* |c_ULTIMATE.start_gcd_test_~b#1| 255)) 256))) (let ((.cse26 (+ (- 256) .cse28))) (let ((.cse14 (< |c_ULTIMATE.start_gcd_test_~a#1| 0)) (.cse25 (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse26) 256)) (.cse3 (<= (mod (+ .cse24 |c_ULTIMATE.start_gcd_test_~b#1|) 256) 127)) (.cse13 (<= .cse28 127)) (.cse27 (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse28) 256)) (.cse17 (mod .cse24 256))) (let ((.cse18 (<= .cse17 127)) (.cse5 (= .cse28 0)) (.cse6 (not (= (mod (mod .cse28 .cse27) 256) 0))) (.cse8 (<= .cse27 |c_ULTIMATE.start_main1_~x~0#1|)) (.cse9 (not .cse13)) (.cse0 (< |c_ULTIMATE.start_gcd_test_~b#1| 0)) (.cse1 (not .cse3)) (.cse11 (not (= (mod (mod .cse26 .cse25) 256) 0))) (.cse7 (not .cse14)) (.cse12 (<= .cse25 |c_ULTIMATE.start_main1_~x~0#1|))) (and (or (let ((.cse4 (let ((.cse15 (+ (- 256) .cse17))) (let ((.cse16 (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse15) 256))) (or .cse14 (not (= 0 (mod (mod .cse15 .cse16) 256))) (<= .cse16 |c_ULTIMATE.start_main1_~x~0#1|)))))) (and (or (let ((.cse2 (and .cse4 (or .cse5 .cse6 .cse7 .cse8)))) (and (or .cse0 .cse1 .cse2) (or .cse0 .cse3 .cse2))) .cse9) (or (let ((.cse10 (and .cse4 (or .cse11 .cse7 .cse12)))) (and (or .cse0 .cse3 .cse10) (or .cse0 .cse10))) .cse13))) .cse18) (or (not .cse18) (let ((.cse20 (= .cse24 0))) (let ((.cse21 (let ((.cse23 (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse17) 256))) (or (not (= (mod (mod .cse17 .cse23) 256) 0)) (and .cse14 (not .cse20)) (<= .cse23 |c_ULTIMATE.start_main1_~x~0#1|) (= .cse17 0))))) (and (or (let ((.cse19 (and (or .cse20 .cse5 .cse6 .cse7 .cse8) .cse21))) (and (or .cse19 .cse0) (or .cse19 .cse0 .cse1))) .cse9) (or (let ((.cse22 (and (or .cse20 .cse11 .cse7 .cse12) .cse21))) (and (or .cse0 .cse3 .cse22) (or .cse0 .cse1 .cse22))) .cse13))))))))))) (= |c_ULTIMATE.start_gcd_test_~b#1| 0)) is different from true