./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_2+newton_2_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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_4.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 add45819e4621ede17512a8acbf89201f3f4db1ab1bf97afdd66c20e4064e4cd --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 07:18:20,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 07:18:20,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 07:18:20,192 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 07:18:20,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 07:18:20,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 07:18:20,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 07:18:20,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 07:18:20,202 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 07:18:20,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 07:18:20,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 07:18:20,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 07:18:20,212 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 07:18:20,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 07:18:20,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 07:18:20,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 07:18:20,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 07:18:20,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 07:18:20,221 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 07:18:20,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 07:18:20,227 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 07:18:20,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 07:18:20,229 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 07:18:20,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 07:18:20,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 07:18:20,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 07:18:20,237 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 07:18:20,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 07:18:20,238 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 07:18:20,239 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 07:18:20,241 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 07:18:20,241 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 07:18:20,243 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 07:18:20,243 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 07:18:20,244 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 07:18:20,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 07:18:20,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 07:18:20,246 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 07:18:20,246 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 07:18:20,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 07:18:20,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 07:18:20,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 07:18:20,256 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 07:18:20,285 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 07:18:20,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 07:18:20,286 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 07:18:20,286 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 07:18:20,287 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 07:18:20,287 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 07:18:20,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 07:18:20,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 07:18:20,288 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 07:18:20,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 07:18:20,289 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 07:18:20,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 07:18:20,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 07:18:20,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 07:18:20,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 07:18:20,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 07:18:20,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 07:18:20,290 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 07:18:20,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 07:18:20,291 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 07:18:20,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 07:18:20,291 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 07:18:20,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 07:18:20,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 07:18:20,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 07:18:20,292 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 07:18:20,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 07:18:20,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 07:18:20,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 07:18:20,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 07:18:20,293 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 07:18:20,293 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 07:18:20,293 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 07:18:20,293 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> add45819e4621ede17512a8acbf89201f3f4db1ab1bf97afdd66c20e4064e4cd [2022-07-21 07:18:20,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 07:18:20,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 07:18:20,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 07:18:20,649 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 07:18:20,649 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 07:18:20,650 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_2+newton_2_4.i [2022-07-21 07:18:20,696 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d8d35d14/e69bf0fcf33245d6b7713d19eb0eace9/FLAG67bde3bd7 [2022-07-21 07:18:21,100 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 07:18:21,103 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_2+newton_2_4.i [2022-07-21 07:18:21,109 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d8d35d14/e69bf0fcf33245d6b7713d19eb0eace9/FLAG67bde3bd7 [2022-07-21 07:18:21,124 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d8d35d14/e69bf0fcf33245d6b7713d19eb0eace9 [2022-07-21 07:18:21,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 07:18:21,128 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 07:18:21,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 07:18:21,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 07:18:21,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 07:18:21,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:18:21" (1/1) ... [2022-07-21 07:18:21,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39aef531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:18:21, skipping insertion in model container [2022-07-21 07:18:21,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:18:21" (1/1) ... [2022-07-21 07:18:21,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 07:18:21,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 07:18:21,306 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_4.i[1226,1239] [2022-07-21 07:18:21,378 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_4.i[2841,2854] [2022-07-21 07:18:21,381 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 07:18:21,389 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 07:18:21,399 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_4.i[1226,1239] [2022-07-21 07:18:21,407 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_4.i[2841,2854] [2022-07-21 07:18:21,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 07:18:21,421 INFO L208 MainTranslator]: Completed translation [2022-07-21 07:18:21,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:18:21 WrapperNode [2022-07-21 07:18:21,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 07:18:21,423 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 07:18:21,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 07:18:21,423 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 07:18:21,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:18:21" (1/1) ... [2022-07-21 07:18:21,443 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:18:21" (1/1) ... [2022-07-21 07:18:21,470 INFO L137 Inliner]: procedures = 27, calls = 16, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 77 [2022-07-21 07:18:21,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 07:18:21,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 07:18:21,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 07:18:21,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 07:18:21,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:18:21" (1/1) ... [2022-07-21 07:18:21,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:18:21" (1/1) ... [2022-07-21 07:18:21,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:18:21" (1/1) ... [2022-07-21 07:18:21,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:18:21" (1/1) ... [2022-07-21 07:18:21,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:18:21" (1/1) ... [2022-07-21 07:18:21,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:18:21" (1/1) ... [2022-07-21 07:18:21,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:18:21" (1/1) ... [2022-07-21 07:18:21,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 07:18:21,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 07:18:21,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 07:18:21,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 07:18:21,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:18:21" (1/1) ... [2022-07-21 07:18:21,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 07:18:21,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 07:18:21,550 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) [2022-07-21 07:18:21,575 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 [2022-07-21 07:18:21,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 07:18:21,589 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-07-21 07:18:21,590 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-07-21 07:18:21,590 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-07-21 07:18:21,591 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-07-21 07:18:21,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 07:18:21,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 07:18:21,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 07:18:21,653 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 07:18:21,654 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 07:18:21,788 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 07:18:21,793 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 07:18:21,793 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 07:18:21,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:18:21 BoogieIcfgContainer [2022-07-21 07:18:21,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 07:18:21,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 07:18:21,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 07:18:21,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 07:18:21,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 07:18:21" (1/3) ... [2022-07-21 07:18:21,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ba6520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:18:21, skipping insertion in model container [2022-07-21 07:18:21,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:18:21" (2/3) ... [2022-07-21 07:18:21,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ba6520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:18:21, skipping insertion in model container [2022-07-21 07:18:21,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:18:21" (3/3) ... [2022-07-21 07:18:21,809 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_2+newton_2_4.i [2022-07-21 07:18:21,821 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 07:18:21,821 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 07:18:21,868 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 07:18:21,894 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@4a29662c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7662461a [2022-07-21 07:18:21,894 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 07:18:21,898 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) [2022-07-21 07:18:21,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-21 07:18:21,904 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:18:21,919 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:18:21,920 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:18:21,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:18:21,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1709385323, now seen corresponding path program 1 times [2022-07-21 07:18:21,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:18:21,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062634944] [2022-07-21 07:18:21,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:18:21,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:18:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:18:22,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:18:22,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:18:22,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062634944] [2022-07-21 07:18:22,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062634944] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:18:22,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:18:22,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 07:18:22,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897494761] [2022-07-21 07:18:22,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:18:22,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 07:18:22,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:18:22,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 07:18:22,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 07:18:22,216 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) [2022-07-21 07:18:22,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:18:22,311 INFO L93 Difference]: Finished difference Result 90 states and 111 transitions. [2022-07-21 07:18:22,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 07:18:22,313 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 [2022-07-21 07:18:22,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:18:22,318 INFO L225 Difference]: With dead ends: 90 [2022-07-21 07:18:22,318 INFO L226 Difference]: Without dead ends: 36 [2022-07-21 07:18:22,322 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 [2022-07-21 07:18:22,327 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 [2022-07-21 07:18:22,328 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] [2022-07-21 07:18:22,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-07-21 07:18:22,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2022-07-21 07:18:22,375 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) [2022-07-21 07:18:22,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2022-07-21 07:18:22,378 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 11 [2022-07-21 07:18:22,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:18:22,379 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2022-07-21 07:18:22,379 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) [2022-07-21 07:18:22,379 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2022-07-21 07:18:22,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-21 07:18:22,381 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:18:22,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:18:22,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 07:18:22,382 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:18:22,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:18:22,384 INFO L85 PathProgramCache]: Analyzing trace with hash 65622039, now seen corresponding path program 1 times [2022-07-21 07:18:22,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:18:22,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439622862] [2022-07-21 07:18:22,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:18:22,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:18:22,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:18:22,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:18:22,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:18:22,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439622862] [2022-07-21 07:18:22,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439622862] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 07:18:22,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 07:18:22,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 07:18:22,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847711011] [2022-07-21 07:18:22,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 07:18:22,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 07:18:22,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:18:22,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 07:18:22,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 07:18:22,458 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) [2022-07-21 07:18:22,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:18:22,488 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2022-07-21 07:18:22,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 07:18:22,489 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 [2022-07-21 07:18:22,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:18:22,490 INFO L225 Difference]: With dead ends: 36 [2022-07-21 07:18:22,491 INFO L226 Difference]: Without dead ends: 30 [2022-07-21 07:18:22,492 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 [2022-07-21 07:18:22,493 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 [2022-07-21 07:18:22,495 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] [2022-07-21 07:18:22,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-07-21 07:18:22,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-07-21 07:18:22,503 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) [2022-07-21 07:18:22,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-07-21 07:18:22,505 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 11 [2022-07-21 07:18:22,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:18:22,508 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-07-21 07:18:22,508 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) [2022-07-21 07:18:22,508 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-07-21 07:18:22,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-21 07:18:22,509 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:18:22,510 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:18:22,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 07:18:22,510 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:18:22,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:18:22,515 INFO L85 PathProgramCache]: Analyzing trace with hash -659390950, now seen corresponding path program 1 times [2022-07-21 07:18:22,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:18:22,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239786602] [2022-07-21 07:18:22,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:18:22,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:18:22,531 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 07:18:22,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2062668356] [2022-07-21 07:18:22,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:18:22,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 07:18:22,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 07:18:22,535 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) [2022-07-21 07:18:22,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 07:18:22,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 07:18:22,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 07:18:22,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 07:18:22,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:18:22,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 07:18:22,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:18:22,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:18:22,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239786602] [2022-07-21 07:18:22,683 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 07:18:22,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062668356] [2022-07-21 07:18:22,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062668356] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 07:18:22,684 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 07:18:22,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2022-07-21 07:18:22,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299966356] [2022-07-21 07:18:22,684 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 07:18:22,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 07:18:22,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:18:22,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 07:18:22,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 07:18:22,686 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) [2022-07-21 07:18:22,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:18:22,740 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2022-07-21 07:18:22,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 07:18:22,741 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 [2022-07-21 07:18:22,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:18:22,741 INFO L225 Difference]: With dead ends: 37 [2022-07-21 07:18:22,741 INFO L226 Difference]: Without dead ends: 31 [2022-07-21 07:18:22,742 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 [2022-07-21 07:18:22,743 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 [2022-07-21 07:18:22,743 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] [2022-07-21 07:18:22,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-07-21 07:18:22,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-07-21 07:18:22,747 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) [2022-07-21 07:18:22,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-07-21 07:18:22,747 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 12 [2022-07-21 07:18:22,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:18:22,748 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-07-21 07:18:22,748 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) [2022-07-21 07:18:22,748 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-07-21 07:18:22,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-21 07:18:22,749 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:18:22,749 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:18:22,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 07:18:22,963 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 [2022-07-21 07:18:22,964 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:18:22,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:18:22,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1659957129, now seen corresponding path program 2 times [2022-07-21 07:18:22,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:18:22,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839864625] [2022-07-21 07:18:22,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:18:22,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:18:22,974 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 07:18:22,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2069619376] [2022-07-21 07:18:22,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 07:18:22,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 07:18:22,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 07:18:22,976 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) [2022-07-21 07:18:22,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 07:18:23,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 07:18:23,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 07:18:23,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-21 07:18:23,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 07:21:00,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:21:00,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 07:22:12,167 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 07:22:12,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 07:22:12,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839864625] [2022-07-21 07:22:12,168 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 07:22:12,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069619376] [2022-07-21 07:22:12,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069619376] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 07:22:12,169 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 07:22:12,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-07-21 07:22:12,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943699679] [2022-07-21 07:22:12,169 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 07:22:12,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-21 07:22:12,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 07:22:12,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-21 07:22:12,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=211, Unknown=12, NotChecked=0, Total=272 [2022-07-21 07:22:12,171 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) [2022-07-21 07:22:19,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 07:22:19,902 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2022-07-21 07:22:19,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 07:22:19,903 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 [2022-07-21 07:22:19,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 07:22:19,904 INFO L225 Difference]: With dead ends: 44 [2022-07-21 07:22:19,904 INFO L226 Difference]: Without dead ends: 35 [2022-07-21 07:22:19,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 49.6s TimeCoverageRelationStatistics Valid=82, Invalid=325, Unknown=13, NotChecked=0, Total=420 [2022-07-21 07:22:19,905 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 07:22:19,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 185 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 22 Unchecked, 0.3s Time] [2022-07-21 07:22:19,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-07-21 07:22:19,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2022-07-21 07:22:19,909 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) [2022-07-21 07:22:19,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2022-07-21 07:22:19,909 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 13 [2022-07-21 07:22:19,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 07:22:19,910 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2022-07-21 07:22:19,910 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) [2022-07-21 07:22:19,910 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-07-21 07:22:19,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-21 07:22:19,911 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 07:22:19,911 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 07:22:19,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 07:22:20,111 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 [2022-07-21 07:22:20,112 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 07:22:20,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 07:22:20,113 INFO L85 PathProgramCache]: Analyzing trace with hash -2084161321, now seen corresponding path program 3 times [2022-07-21 07:22:20,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 07:22:20,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770785947] [2022-07-21 07:22:20,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 07:22:20,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 07:22:20,128 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 07:22:20,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1887184705] [2022-07-21 07:22:20,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 07:22:20,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 07:22:20,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 07:22:20,135 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) [2022-07-21 07:22:20,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 07:22:20,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-21 07:22:20,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 07:22:20,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-21 07:22:20,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 07:23:02,687 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