./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_2+newton_2_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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_2+newton_2_1.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 2f8505e46ba1dfd9d1ec3a293aaba2f619b40b1a80d91e8d871194a57c70c939 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 19:41:21,093 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 19:41:21,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 19:41:21,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 19:41:21,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 19:41:21,119 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 19:41:21,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 19:41:21,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 19:41:21,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 19:41:21,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 19:41:21,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 19:41:21,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 19:41:21,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 19:41:21,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 19:41:21,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 19:41:21,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 19:41:21,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 19:41:21,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 19:41:21,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 19:41:21,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 19:41:21,146 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 19:41:21,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 19:41:21,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 19:41:21,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 19:41:21,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 19:41:21,151 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 19:41:21,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 19:41:21,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 19:41:21,154 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 19:41:21,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 19:41:21,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 19:41:21,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 19:41:21,156 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 19:41:21,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 19:41:21,157 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 19:41:21,158 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 19:41:21,158 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 19:41:21,159 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 19:41:21,159 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 19:41:21,159 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 19:41:21,160 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 19:41:21,161 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 19:41:21,162 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 19:41:21,182 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 19:41:21,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 19:41:21,183 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 19:41:21,183 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 19:41:21,184 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 19:41:21,184 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 19:41:21,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 19:41:21,185 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 19:41:21,185 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 19:41:21,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 19:41:21,186 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 19:41:21,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 19:41:21,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 19:41:21,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 19:41:21,187 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 19:41:21,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 19:41:21,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 19:41:21,187 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 19:41:21,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 19:41:21,188 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 19:41:21,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 19:41:21,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 19:41:21,189 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 19:41:21,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 19:41:21,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 19:41:21,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 19:41:21,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 19:41:21,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 19:41:21,190 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 19:41:21,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 19:41:21,190 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 19:41:21,190 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 19:41:21,191 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 19:41:21,191 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f8505e46ba1dfd9d1ec3a293aaba2f619b40b1a80d91e8d871194a57c70c939 [2022-07-19 19:41:21,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 19:41:21,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 19:41:21,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 19:41:21,426 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 19:41:21,427 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 19:41:21,428 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_2+newton_2_1.i [2022-07-19 19:41:21,477 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7d6c5df7/d2fc7745329646988de1eff4ff472d8a/FLAG935cfc7de [2022-07-19 19:41:21,856 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 19:41:21,857 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_2_1.i [2022-07-19 19:41:21,864 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7d6c5df7/d2fc7745329646988de1eff4ff472d8a/FLAG935cfc7de [2022-07-19 19:41:21,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7d6c5df7/d2fc7745329646988de1eff4ff472d8a [2022-07-19 19:41:21,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 19:41:21,882 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 19:41:21,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 19:41:21,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 19:41:21,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 19:41:21,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 07:41:21" (1/1) ... [2022-07-19 19:41:21,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17787fa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:41:21, skipping insertion in model container [2022-07-19 19:41:21,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 07:41:21" (1/1) ... [2022-07-19 19:41:21,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 19:41:21,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 19:41:22,071 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_2+newton_2_1.i[1226,1239] [2022-07-19 19:41:22,102 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_2+newton_2_1.i[2841,2854] [2022-07-19 19:41:22,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 19:41:22,110 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 19:41:22,122 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_2+newton_2_1.i[1226,1239] [2022-07-19 19:41:22,139 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_2+newton_2_1.i[2841,2854] [2022-07-19 19:41:22,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 19:41:22,154 INFO L208 MainTranslator]: Completed translation [2022-07-19 19:41:22,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:41:22 WrapperNode [2022-07-19 19:41:22,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 19:41:22,156 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 19:41:22,156 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 19:41:22,156 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 19:41:22,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:41:22" (1/1) ... [2022-07-19 19:41:22,173 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:41:22" (1/1) ... [2022-07-19 19:41:22,194 INFO L137 Inliner]: procedures = 27, calls = 16, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 77 [2022-07-19 19:41:22,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 19:41:22,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 19:41:22,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 19:41:22,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 19:41:22,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:41:22" (1/1) ... [2022-07-19 19:41:22,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:41:22" (1/1) ... [2022-07-19 19:41:22,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:41:22" (1/1) ... [2022-07-19 19:41:22,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:41:22" (1/1) ... [2022-07-19 19:41:22,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:41:22" (1/1) ... [2022-07-19 19:41:22,225 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:41:22" (1/1) ... [2022-07-19 19:41:22,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:41:22" (1/1) ... [2022-07-19 19:41:22,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 19:41:22,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 19:41:22,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 19:41:22,233 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 19:41:22,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:41:22" (1/1) ... [2022-07-19 19:41:22,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 19:41:22,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:41:22,269 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) [2022-07-19 19:41:22,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 19:41:22,298 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-07-19 19:41:22,299 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-07-19 19:41:22,299 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-07-19 19:41:22,299 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-07-19 19:41:22,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 19:41:22,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 19:41:22,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 19:41:22,291 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 [2022-07-19 19:41:22,341 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 19:41:22,342 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 19:41:22,470 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 19:41:22,474 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 19:41:22,475 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 19:41:22,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 07:41:22 BoogieIcfgContainer [2022-07-19 19:41:22,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 19:41:22,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 19:41:22,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 19:41:22,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 19:41:22,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 07:41:21" (1/3) ... [2022-07-19 19:41:22,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b50142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 07:41:22, skipping insertion in model container [2022-07-19 19:41:22,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:41:22" (2/3) ... [2022-07-19 19:41:22,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39b50142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 07:41:22, skipping insertion in model container [2022-07-19 19:41:22,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 07:41:22" (3/3) ... [2022-07-19 19:41:22,482 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_2_1.i [2022-07-19 19:41:22,491 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 19:41:22,491 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 19:41:22,520 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 19:41:22,525 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@a00b9ea, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7193f934 [2022-07-19 19:41:22,525 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 19:41:22,528 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 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) [2022-07-19 19:41:22,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-19 19:41:22,541 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:41:22,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:41:22,542 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:41:22,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:41:22,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1709385323, now seen corresponding path program 1 times [2022-07-19 19:41:22,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:41:22,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745812816] [2022-07-19 19:41:22,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:41:22,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:41:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:41:22,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:41:22,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:41:22,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745812816] [2022-07-19 19:41:22,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745812816] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:41:22,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:41:22,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 19:41:22,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732823118] [2022-07-19 19:41:22,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:41:22,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 19:41:22,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:41:22,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 19:41:22,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 19:41:22,801 INFO L87 Difference]: Start difference. First operand has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 4 states have (on average 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) [2022-07-19 19:41:22,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:41:22,882 INFO L93 Difference]: Finished difference Result 90 states and 111 transitions. [2022-07-19 19:41:22,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 19:41:22,884 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 [2022-07-19 19:41:22,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:41:22,892 INFO L225 Difference]: With dead ends: 90 [2022-07-19 19:41:22,892 INFO L226 Difference]: Without dead ends: 36 [2022-07-19 19:41:22,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 19:41:22,899 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 29 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:41:22,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 107 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 19:41:22,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-07-19 19:41:22,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2022-07-19 19:41:22,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 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) [2022-07-19 19:41:22,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-07-19 19:41:22,932 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 11 [2022-07-19 19:41:22,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:41:22,932 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-07-19 19:41:22,933 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) [2022-07-19 19:41:22,933 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-07-19 19:41:22,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-19 19:41:22,934 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:41:22,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:41:22,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 19:41:22,935 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:41:22,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:41:22,938 INFO L85 PathProgramCache]: Analyzing trace with hash 65622039, now seen corresponding path program 1 times [2022-07-19 19:41:22,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:41:22,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841743446] [2022-07-19 19:41:22,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:41:22,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:41:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:41:22,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:41:22,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:41:22,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841743446] [2022-07-19 19:41:22,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841743446] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:41:22,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:41:22,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 19:41:22,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85039709] [2022-07-19 19:41:22,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:41:22,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 19:41:22,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:41:22,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 19:41:23,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 19:41:23,003 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. 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) [2022-07-19 19:41:23,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:41:23,030 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2022-07-19 19:41:23,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 19:41:23,032 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 [2022-07-19 19:41:23,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:41:23,033 INFO L225 Difference]: With dead ends: 36 [2022-07-19 19:41:23,033 INFO L226 Difference]: Without dead ends: 30 [2022-07-19 19:41:23,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 19:41:23,035 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 4 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:41:23,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 82 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 19:41:23,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-07-19 19:41:23,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-07-19 19:41:23,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 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) [2022-07-19 19:41:23,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-07-19 19:41:23,046 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 11 [2022-07-19 19:41:23,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:41:23,048 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-07-19 19:41:23,048 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) [2022-07-19 19:41:23,049 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-07-19 19:41:23,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-19 19:41:23,050 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:41:23,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:41:23,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 19:41:23,050 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:41:23,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:41:23,055 INFO L85 PathProgramCache]: Analyzing trace with hash -659390950, now seen corresponding path program 1 times [2022-07-19 19:41:23,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:41:23,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433745537] [2022-07-19 19:41:23,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:41:23,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:41:23,082 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 19:41:23,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [48300900] [2022-07-19 19:41:23,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:41:23,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 19:41:23,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:41:23,113 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) [2022-07-19 19:41:23,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 19:41:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:41:23,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 19:41:23,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 19:41:23,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:41:23,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 19:41:23,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:41:23,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:41:23,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433745537] [2022-07-19 19:41:23,300 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 19:41:23,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48300900] [2022-07-19 19:41:23,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48300900] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 19:41:23,301 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 19:41:23,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2022-07-19 19:41:23,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87151280] [2022-07-19 19:41:23,301 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 19:41:23,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:41:23,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:41:23,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:41:23,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:41:23,303 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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) [2022-07-19 19:41:23,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:41:23,367 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2022-07-19 19:41:23,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 19:41:23,368 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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 12 [2022-07-19 19:41:23,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:41:23,369 INFO L225 Difference]: With dead ends: 37 [2022-07-19 19:41:23,369 INFO L226 Difference]: Without dead ends: 31 [2022-07-19 19:41:23,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-19 19:41:23,372 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:41:23,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 153 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 19:41:23,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-07-19 19:41:23,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-07-19 19:41:23,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 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) [2022-07-19 19:41:23,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-07-19 19:41:23,378 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 12 [2022-07-19 19:41:23,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:41:23,378 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-07-19 19:41:23,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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) [2022-07-19 19:41:23,378 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-07-19 19:41:23,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-19 19:41:23,379 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:41:23,379 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:41:23,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 19:41:23,596 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 [2022-07-19 19:41:23,596 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:41:23,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:41:23,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1659957129, now seen corresponding path program 2 times [2022-07-19 19:41:23,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:41:23,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838588319] [2022-07-19 19:41:23,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:41:23,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:41:23,607 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 19:41:23,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [530544812] [2022-07-19 19:41:23,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 19:41:23,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 19:41:23,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:41:23,620 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) [2022-07-19 19:41:23,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 19:41:23,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 19:41:23,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 19:41:23,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-19 19:41:23,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 19:43:46,651 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:43:46,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 19:44:52,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:44:52,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:44:52,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838588319] [2022-07-19 19:44:52,355 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 19:44:52,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530544812] [2022-07-19 19:44:52,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530544812] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 19:44:52,361 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 19:44:52,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-07-19 19:44:52,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642854696] [2022-07-19 19:44:52,361 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 19:44:52,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-19 19:44:52,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:44:52,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-19 19:44:52,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=214, Unknown=9, NotChecked=0, Total=272 [2022-07-19 19:44:52,363 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 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) [2022-07-19 19:44:58,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:44:58,756 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2022-07-19 19:44:58,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 19:44:58,757 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 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 13 [2022-07-19 19:44:58,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:44:58,757 INFO L225 Difference]: With dead ends: 44 [2022-07-19 19:44:58,757 INFO L226 Difference]: Without dead ends: 35 [2022-07-19 19:44:58,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 39.8s TimeCoverageRelationStatistics Valid=82, Invalid=328, Unknown=10, NotChecked=0, Total=420 [2022-07-19 19:44:58,758 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 19:44:58,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 185 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 22 Unchecked, 0.2s Time] [2022-07-19 19:44:58,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-07-19 19:44:58,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2022-07-19 19:44:58,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.12) internal successors, (28), 26 states have internal predecessors, (28), 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) [2022-07-19 19:44:58,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2022-07-19 19:44:58,761 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 13 [2022-07-19 19:44:58,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:44:58,761 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2022-07-19 19:44:58,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 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) [2022-07-19 19:44:58,761 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-07-19 19:44:58,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-19 19:44:58,762 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:44:58,762 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:44:58,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 19:44:58,973 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 [2022-07-19 19:44:58,973 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:44:58,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:44:58,974 INFO L85 PathProgramCache]: Analyzing trace with hash -2084161321, now seen corresponding path program 3 times [2022-07-19 19:44:58,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:44:58,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518392681] [2022-07-19 19:44:58,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:44:58,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:44:58,988 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 19:44:58,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1902075339] [2022-07-19 19:44:58,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 19:44:58,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 19:44:58,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:44:59,006 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) [2022-07-19 19:44:59,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 19:44:59,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-19 19:44:59,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 19:44:59,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-19 19:44:59,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 19:45:40,253 WARN L833 $PredicateComparison]: unable to prove that (and (not (= |c_ULTIMATE.start_main1_~y~0#1| 0)) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_19| Int)) (and (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_19|) (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_18| Int)) (let ((.cse3 (mod |v_ULTIMATE.start_gcd_test_~a#1_18| |c_ULTIMATE.start_main1_~y~0#1|))) (and (let ((.cse1 (< |v_ULTIMATE.start_gcd_test_~a#1_18| 0))) (or (let ((.cse2 (mod .cse3 256))) (let ((.cse0 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_19| .cse2) 256))) (and (not (= .cse0 0)) (not .cse1) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod .cse2 .cse0) 256))))) (let ((.cse7 (+ (- 256) (mod (+ (* |c_ULTIMATE.start_main1_~y~0#1| 255) .cse3) 256)))) (let ((.cse6 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_19| .cse7) 256))) (and .cse1 (let ((.cse5 (mod .cse7 .cse6))) (let ((.cse4 (= .cse5 0))) (or (and .cse4 (= (mod .cse5 256) |c_ULTIMATE.start_gcd_test_~b#1|)) (and (not .cse4) (= |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) (mod (+ (* 255 .cse6) .cse5) 256))))))) (not (= .cse6 0))))))) (not (<= (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse3) 256) 127))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_18| Int)) (let ((.cse9 (mod |v_ULTIMATE.start_gcd_test_~a#1_18| |c_ULTIMATE.start_main1_~y~0#1|))) (and (let ((.cse8 (< |v_ULTIMATE.start_gcd_test_~a#1_18| 0))) (or (let ((.cse13 (+ (- 256) (mod (+ (* |c_ULTIMATE.start_main1_~y~0#1| 255) .cse9) 256)))) (let ((.cse12 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_19| .cse13) 256))) (and .cse8 (not (= .cse9 0)) (let ((.cse11 (mod .cse13 .cse12))) (let ((.cse10 (= .cse11 0))) (or (and .cse10 (= (mod .cse11 256) |c_ULTIMATE.start_gcd_test_~b#1|)) (and (not .cse10) (= |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) (mod (+ (* 255 .cse12) .cse11) 256))))))) (not (= .cse12 0))))) (let ((.cse14 (mod .cse9 256))) (let ((.cse15 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_19| .cse14) 256))) (and (not (= .cse14 0)) (not (= .cse15 0)) (not .cse8) (= |c_ULTIMATE.start_gcd_test_~b#1| (mod (mod .cse14 .cse15) 256))))))) (<= (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse9) 256) 127))))))) (not (< |c_ULTIMATE.start_main1_~y~0#1| 0)) (<= |c_ULTIMATE.start_main1_~y~0#1| 127)) is different from false [2022-07-19 19:45:59,269 WARN L833 $PredicateComparison]: unable to prove that (and (not (= |c_ULTIMATE.start_main1_~y~0#1| 0)) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_19| Int)) (and (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_18| Int)) (let ((.cse1 (mod |v_ULTIMATE.start_gcd_test_~a#1_18| |c_ULTIMATE.start_main1_~y~0#1|))) (and (let ((.cse0 (< |v_ULTIMATE.start_gcd_test_~a#1_18| 0))) (or (let ((.cse4 (+ (- 256) (mod (+ (* |c_ULTIMATE.start_main1_~y~0#1| 255) .cse1) 256)))) (let ((.cse3 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_19| .cse4) 256))) (let ((.cse2 (mod .cse4 .cse3))) (and .cse0 (not (= .cse1 0)) (not (= .cse2 0)) (not (= .cse3 0)) (= |c_ULTIMATE.start_gcd_test_~a#1| (+ (- 256) (mod (+ (* 255 .cse3) .cse2) 256))))))) (let ((.cse6 (mod .cse1 256))) (let ((.cse5 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_19| .cse6) 256))) (and (not (= .cse5 0)) (not .cse0) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod .cse6 .cse5) 256))))))) (<= (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse1) 256) 127)))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_18| Int)) (let ((.cse10 (mod |v_ULTIMATE.start_gcd_test_~a#1_18| |c_ULTIMATE.start_main1_~y~0#1|))) (and (let ((.cse8 (< |v_ULTIMATE.start_gcd_test_~a#1_18| 0))) (or (let ((.cse9 (mod .cse10 256))) (let ((.cse7 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_19| .cse9) 256))) (and (not (= .cse7 0)) (not .cse8) (= |c_ULTIMATE.start_gcd_test_~a#1| (mod (mod .cse9 .cse7) 256))))) (let ((.cse13 (+ (- 256) (mod (+ (* |c_ULTIMATE.start_main1_~y~0#1| 255) .cse10) 256)))) (let ((.cse12 (mod (mod |v_ULTIMATE.start_gcd_test_~a#1_19| .cse13) 256))) (let ((.cse11 (mod .cse13 .cse12))) (and .cse8 (not (= .cse11 0)) (not (= .cse12 0)) (= |c_ULTIMATE.start_gcd_test_~a#1| (+ (- 256) (mod (+ (* 255 .cse12) .cse11) 256))))))))) (not (<= (mod (+ |c_ULTIMATE.start_main1_~y~0#1| .cse10) 256) 127)))))) (<= |c_ULTIMATE.start_main1_~y~0#1| |v_ULTIMATE.start_gcd_test_~a#1_19|))) (not (< |c_ULTIMATE.start_main1_~y~0#1| 0)) (or (exists ((|v_ULTIMATE.start_gcd_test_~a#1_21| Int)) (let ((.cse16 (mod |v_ULTIMATE.start_gcd_test_~a#1_21| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (let ((.cse15 (mod .cse16 256))) (let ((.cse14 (<= .cse15 127))) (or (and (not .cse14) (= |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse15))) (and .cse14 (= |c_ULTIMATE.start_gcd_test_~b#1| .cse15))))) (or (not (< |v_ULTIMATE.start_gcd_test_~a#1_21| 0)) (= 0 .cse16))))) (exists ((|v_ULTIMATE.start_gcd_test_~a#1_21| Int)) (let ((.cse17 (mod |v_ULTIMATE.start_gcd_test_~a#1_21| |c_ULTIMATE.start_gcd_test_~a#1|))) (and (not (= 0 .cse17)) (< |v_ULTIMATE.start_gcd_test_~a#1_21| 0) (let ((.cse20 (< |c_ULTIMATE.start_gcd_test_~a#1| 0))) (or (and (let ((.cse19 (mod (+ |c_ULTIMATE.start_gcd_test_~a#1| .cse17) 256))) (let ((.cse18 (<= .cse19 127))) (or (and .cse18 (= |c_ULTIMATE.start_gcd_test_~b#1| .cse19)) (and (= |c_ULTIMATE.start_gcd_test_~b#1| (+ (- 256) .cse19)) (not .cse18))))) .cse20) (and (not .cse20) (let ((.cse22 (mod (+ (* |c_ULTIMATE.start_gcd_test_~a#1| 255) .cse17) 256))) (let ((.cse21 (<= .cse22 127))) (or (and .cse21 (= .cse22 |c_ULTIMATE.start_gcd_test_~b#1|)) (and (= |c_ULTIMATE.start_gcd_test_~b#1| (+ .cse22 (- 256))) (not .cse21)))))))))))) (<= |c_ULTIMATE.start_main1_~y~0#1| 127) (not (= |c_ULTIMATE.start_gcd_test_~a#1| 0))) is different from false