./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_3+newton_3_6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/gcd_3+newton_3_6.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 cefb3bae89bbacb2fe493d14201bba1802fb381afd861fd412b13151077489a8 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 20:30:26,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 20:30:26,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 20:30:26,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 20:30:26,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 20:30:26,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 20:30:26,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 20:30:26,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 20:30:26,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 20:30:26,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 20:30:26,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 20:30:26,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 20:30:26,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 20:30:26,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 20:30:26,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 20:30:26,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 20:30:26,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 20:30:26,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 20:30:26,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 20:30:26,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 20:30:26,293 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 20:30:26,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 20:30:26,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 20:30:26,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 20:30:26,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 20:30:26,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 20:30:26,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 20:30:26,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 20:30:26,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 20:30:26,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 20:30:26,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 20:30:26,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 20:30:26,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 20:30:26,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 20:30:26,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 20:30:26,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 20:30:26,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 20:30:26,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 20:30:26,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 20:30:26,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 20:30:26,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 20:30:26,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 20:30:26,305 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 20:30:26,320 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 20:30:26,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 20:30:26,320 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 20:30:26,320 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 20:30:26,321 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 20:30:26,321 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 20:30:26,322 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 20:30:26,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 20:30:26,322 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 20:30:26,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 20:30:26,322 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 20:30:26,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 20:30:26,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 20:30:26,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 20:30:26,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 20:30:26,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 20:30:26,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 20:30:26,324 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 20:30:26,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 20:30:26,324 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 20:30:26,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 20:30:26,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 20:30:26,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 20:30:26,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 20:30:26,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:30:26,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 20:30:26,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 20:30:26,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 20:30:26,325 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 20:30:26,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 20:30:26,326 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 20:30:26,326 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 20:30:26,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 20:30:26,326 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cefb3bae89bbacb2fe493d14201bba1802fb381afd861fd412b13151077489a8 [2022-07-13 20:30:26,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 20:30:26,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 20:30:26,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 20:30:26,532 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 20:30:26,533 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 20:30:26,534 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_3+newton_3_6.i [2022-07-13 20:30:26,578 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f7184ebb/ed396e213547447e98c8c2f1305dbf66/FLAG21b25fdbe [2022-07-13 20:30:26,877 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 20:30:26,878 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_3_6.i [2022-07-13 20:30:26,883 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f7184ebb/ed396e213547447e98c8c2f1305dbf66/FLAG21b25fdbe [2022-07-13 20:30:27,303 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f7184ebb/ed396e213547447e98c8c2f1305dbf66 [2022-07-13 20:30:27,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 20:30:27,306 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 20:30:27,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 20:30:27,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 20:30:27,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 20:30:27,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:30:27" (1/1) ... [2022-07-13 20:30:27,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c3c82d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:30:27, skipping insertion in model container [2022-07-13 20:30:27,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:30:27" (1/1) ... [2022-07-13 20:30:27,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 20:30:27,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 20:30:27,441 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_3_6.i[1226,1239] [2022-07-13 20:30:27,458 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_3_6.i[2862,2875] [2022-07-13 20:30:27,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:30:27,468 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 20:30:27,476 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_3_6.i[1226,1239] [2022-07-13 20:30:27,485 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_3_6.i[2862,2875] [2022-07-13 20:30:27,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:30:27,494 INFO L208 MainTranslator]: Completed translation [2022-07-13 20:30:27,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:30:27 WrapperNode [2022-07-13 20:30:27,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 20:30:27,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 20:30:27,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 20:30:27,496 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 20:30:27,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:30:27" (1/1) ... [2022-07-13 20:30:27,505 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:30:27" (1/1) ... [2022-07-13 20:30:27,518 INFO L137 Inliner]: procedures = 27, calls = 18, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 82 [2022-07-13 20:30:27,518 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 20:30:27,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 20:30:27,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 20:30:27,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 20:30:27,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:30:27" (1/1) ... [2022-07-13 20:30:27,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:30:27" (1/1) ... [2022-07-13 20:30:27,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:30:27" (1/1) ... [2022-07-13 20:30:27,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:30:27" (1/1) ... [2022-07-13 20:30:27,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:30:27" (1/1) ... [2022-07-13 20:30:27,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:30:27" (1/1) ... [2022-07-13 20:30:27,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:30:27" (1/1) ... [2022-07-13 20:30:27,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 20:30:27,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 20:30:27,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 20:30:27,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 20:30:27,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:30:27" (1/1) ... [2022-07-13 20:30:27,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:30:27,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:30:27,555 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 20:30:27,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 20:30:27,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 20:30:27,583 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-07-13 20:30:27,583 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-07-13 20:30:27,583 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-07-13 20:30:27,583 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-07-13 20:30:27,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 20:30:27,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 20:30:27,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 20:30:27,624 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 20:30:27,625 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 20:30:27,846 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 20:30:27,850 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 20:30:27,850 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 20:30:27,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:30:27 BoogieIcfgContainer [2022-07-13 20:30:27,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 20:30:27,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 20:30:27,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 20:30:27,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 20:30:27,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 08:30:27" (1/3) ... [2022-07-13 20:30:27,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667f9087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:30:27, skipping insertion in model container [2022-07-13 20:30:27,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:30:27" (2/3) ... [2022-07-13 20:30:27,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667f9087 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:30:27, skipping insertion in model container [2022-07-13 20:30:27,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:30:27" (3/3) ... [2022-07-13 20:30:27,864 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_3_6.i [2022-07-13 20:30:27,873 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 20:30:27,873 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 20:30:27,916 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 20:30:27,922 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@4bef5d3d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@223c27ec [2022-07-13 20:30:27,922 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 20:30:27,928 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-13 20:30:27,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-13 20:30:27,936 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:30:27,937 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:30:27,937 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:30:27,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:30:27,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1709385323, now seen corresponding path program 1 times [2022-07-13 20:30:27,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:30:27,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243152890] [2022-07-13 20:30:27,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:30:27,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:30:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:30:28,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:30:28,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:30:28,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243152890] [2022-07-13 20:30:28,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243152890] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:30:28,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:30:28,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 20:30:28,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444103666] [2022-07-13 20:30:28,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:30:28,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 20:30:28,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:30:28,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 20:30:28,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 20:30:28,148 INFO L87 Difference]: Start difference. First operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:30:28,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:30:28,210 INFO L93 Difference]: Finished difference Result 96 states and 120 transitions. [2022-07-13 20:30:28,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 20:30:28,214 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-13 20:30:28,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:30:28,219 INFO L225 Difference]: With dead ends: 96 [2022-07-13 20:30:28,219 INFO L226 Difference]: Without dead ends: 39 [2022-07-13 20:30:28,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 20:30:28,226 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 23 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:30:28,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 134 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:30:28,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-07-13 20:30:28,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2022-07-13 20:30:28,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-13 20:30:28,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2022-07-13 20:30:28,257 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 11 [2022-07-13 20:30:28,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:30:28,257 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2022-07-13 20:30:28,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:30:28,258 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2022-07-13 20:30:28,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-13 20:30:28,259 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:30:28,259 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:30:28,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 20:30:28,259 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:30:28,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:30:28,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1776235347, now seen corresponding path program 1 times [2022-07-13 20:30:28,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:30:28,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016495272] [2022-07-13 20:30:28,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:30:28,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:30:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:30:28,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:30:28,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:30:28,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016495272] [2022-07-13 20:30:28,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016495272] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:30:28,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:30:28,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 20:30:28,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737801504] [2022-07-13 20:30:28,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:30:28,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 20:30:28,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:30:28,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 20:30:28,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:30:28,361 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:30:28,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:30:28,428 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-07-13 20:30:28,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 20:30:28,429 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-13 20:30:28,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:30:28,430 INFO L225 Difference]: With dead ends: 39 [2022-07-13 20:30:28,431 INFO L226 Difference]: Without dead ends: 33 [2022-07-13 20:30:28,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 20:30:28,432 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:30:28,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 155 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:30:28,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-07-13 20:30:28,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-07-13 20:30:28,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-13 20:30:28,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2022-07-13 20:30:28,442 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 11 [2022-07-13 20:30:28,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:30:28,444 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2022-07-13 20:30:28,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:30:28,444 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2022-07-13 20:30:28,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-13 20:30:28,445 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:30:28,445 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:30:28,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 20:30:28,446 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:30:28,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:30:28,450 INFO L85 PathProgramCache]: Analyzing trace with hash 830014046, now seen corresponding path program 1 times [2022-07-13 20:30:28,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:30:28,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539159538] [2022-07-13 20:30:28,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:30:28,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:30:28,459 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 20:30:28,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [316168757] [2022-07-13 20:30:28,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:30:28,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:30:28,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:30:28,464 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:30:28,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 20:30:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:30:28,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-13 20:30:28,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:30:49,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:30:49,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 20:31:01,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:31:01,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:31:01,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539159538] [2022-07-13 20:31:01,756 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 20:31:01,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316168757] [2022-07-13 20:31:01,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316168757] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 20:31:01,756 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 20:31:01,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-07-13 20:31:01,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326791534] [2022-07-13 20:31:01,757 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 20:31:01,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-13 20:31:01,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:31:01,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-13 20:31:01,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=213, Unknown=5, NotChecked=0, Total=272 [2022-07-13 20:31:01,758 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:31:01,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:31:01,879 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2022-07-13 20:31:01,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 20:31:01,889 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-07-13 20:31:01,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:31:01,890 INFO L225 Difference]: With dead ends: 41 [2022-07-13 20:31:01,890 INFO L226 Difference]: Without dead ends: 35 [2022-07-13 20:31:01,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 31.4s TimeCoverageRelationStatistics Valid=63, Invalid=238, Unknown=5, NotChecked=0, Total=306 [2022-07-13 20:31:01,893 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:31:01,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 293 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 17 Unchecked, 0.0s Time] [2022-07-13 20:31:01,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-07-13 20:31:01,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2022-07-13 20:31:01,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-13 20:31:01,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2022-07-13 20:31:01,904 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 12 [2022-07-13 20:31:01,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:31:01,904 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2022-07-13 20:31:01,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:31:01,905 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2022-07-13 20:31:01,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-13 20:31:01,906 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:31:01,906 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:31:01,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 20:31:02,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:31:02,123 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:31:02,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:31:02,124 INFO L85 PathProgramCache]: Analyzing trace with hash 20667420, now seen corresponding path program 1 times [2022-07-13 20:31:02,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:31:02,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825527220] [2022-07-13 20:31:02,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:31:02,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:31:02,130 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 20:31:02,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [995381469] [2022-07-13 20:31:02,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:31:02,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:31:02,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:31:02,134 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:31:02,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 20:31:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:31:02,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-13 20:31:02,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:31:18,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:31:18,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 20:31:22,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:31:22,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:31:22,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825527220] [2022-07-13 20:31:22,015 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 20:31:22,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995381469] [2022-07-13 20:31:22,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995381469] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 20:31:22,015 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 20:31:22,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2022-07-13 20:31:22,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513159072] [2022-07-13 20:31:22,016 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 20:31:22,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-13 20:31:22,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:31:22,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-13 20:31:22,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=180, Unknown=7, NotChecked=0, Total=240 [2022-07-13 20:31:22,017 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 16 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:31:22,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:31:22,308 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2022-07-13 20:31:22,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 20:31:22,309 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-07-13 20:31:22,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:31:22,310 INFO L225 Difference]: With dead ends: 46 [2022-07-13 20:31:22,310 INFO L226 Difference]: Without dead ends: 37 [2022-07-13 20:31:22,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=62, Invalid=203, Unknown=7, NotChecked=0, Total=272 [2022-07-13 20:31:22,311 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 20:31:22,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 281 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 36 Unchecked, 0.1s Time] [2022-07-13 20:31:22,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-07-13 20:31:22,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2022-07-13 20:31:22,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 25 states have (on average 1.12) internal successors, (28), 26 states have internal predecessors, (28), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-13 20:31:22,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2022-07-13 20:31:22,322 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 12 [2022-07-13 20:31:22,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:31:22,323 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2022-07-13 20:31:22,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:31:22,323 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2022-07-13 20:31:22,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-13 20:31:22,324 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:31:22,324 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:31:22,341 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-13 20:31:22,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-13 20:31:22,536 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:31:22,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:31:22,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1518646018, now seen corresponding path program 2 times [2022-07-13 20:31:22,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:31:22,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284223026] [2022-07-13 20:31:22,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:31:22,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:31:22,545 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 20:31:22,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1416817917] [2022-07-13 20:31:22,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 20:31:22,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:31:22,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:31:22,554 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:31:22,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 20:31:22,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 20:31:22,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 20:31:22,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 37 conjunts are in the unsatisfiable core [2022-07-13 20:31:22,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:32:43,758 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:32:43,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 20:34:26,968 WARN L233 SmtUtils]: Spent 1.19m on a formula simplification. DAG size of input: 82 DAG size of output: 58 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-13 20:35:12,999 WARN L833 $PredicateComparison]: unable to prove that (or (<= |c_ULTIMATE.start_main1_~x~0#1| 0) (let ((.cse24 (mod |c_ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse28 (mod (+ .cse24 (* |c_ULTIMATE.start_gcd_test_~b#1| 255)) 256))) (let ((.cse26 (+ (- 256) .cse28))) (let ((.cse10 (< |c_ULTIMATE.start_gcd_test_~a#1| 0)) (.cse25 (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse26) 256)) (.cse27 (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse28) 256))) (let ((.cse13 (mod .cse24 256)) (.cse5 (<= .cse28 127)) (.cse20 (= .cse28 0)) (.cse21 (not (= (mod (mod .cse28 .cse27) 256) 0))) (.cse22 (<= .cse27 |c_ULTIMATE.start_main1_~x~0#1|)) (.cse8 (<= (mod (+ .cse24 |c_ULTIMATE.start_gcd_test_~b#1|) 256) 127)) (.cse16 (not (= (mod (mod .cse26 .cse25) 256) 0))) (.cse17 (not .cse10)) (.cse18 (<= .cse25 |c_ULTIMATE.start_main1_~x~0#1|))) (let ((.cse4 (or .cse16 .cse17 .cse18)) (.cse2 (not .cse8)) (.cse9 (or .cse20 .cse21 .cse17 .cse22)) (.cse0 (< |c_ULTIMATE.start_gcd_test_~b#1| 0)) (.cse6 (not .cse5)) (.cse14 (<= .cse13 127))) (and (or (let ((.cse3 (let ((.cse11 (+ (- 256) .cse13))) (let ((.cse12 (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse11) 256))) (or .cse10 (not (= 0 (mod (mod .cse11 .cse12) 256))) (<= .cse12 |c_ULTIMATE.start_main1_~x~0#1|)))))) (and (or (let ((.cse1 (and .cse3 .cse4))) (and (or .cse0 .cse1) (or .cse0 .cse2 .cse1))) .cse5) (or .cse6 (let ((.cse7 (and .cse3 .cse9))) (and (or .cse0 .cse7) (or .cse0 .cse8 .cse7)))))) .cse14) (or (let ((.cse15 (= .cse24 0))) (let ((.cse19 (let ((.cse23 (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse13) 256))) (or (not (= (mod (mod .cse13 .cse23) 256) 0)) (and .cse10 (not .cse15)) (<= .cse23 |c_ULTIMATE.start_main1_~x~0#1|) (= .cse13 0))))) (and (or (and (or .cse0 (and (or .cse15 .cse16 .cse17 .cse18) .cse19)) (or (and .cse4 .cse19) .cse0 .cse8)) .cse5) (or (and (or .cse0 .cse2 (and .cse9 .cse19)) (or (and (or .cse15 .cse20 .cse21 .cse17 .cse22) .cse19) .cse0 .cse8)) .cse6)))) (not .cse14))))))))) (= |c_ULTIMATE.start_gcd_test_~b#1| 0)) is different from false [2022-07-13 20:35:15,010 WARN L855 $PredicateComparison]: unable to prove that (or (<= |c_ULTIMATE.start_main1_~x~0#1| 0) (let ((.cse24 (mod |c_ULTIMATE.start_gcd_test_~a#1| |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse28 (mod (+ .cse24 (* |c_ULTIMATE.start_gcd_test_~b#1| 255)) 256))) (let ((.cse26 (+ (- 256) .cse28))) (let ((.cse10 (< |c_ULTIMATE.start_gcd_test_~a#1| 0)) (.cse25 (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse26) 256)) (.cse27 (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse28) 256))) (let ((.cse13 (mod .cse24 256)) (.cse5 (<= .cse28 127)) (.cse20 (= .cse28 0)) (.cse21 (not (= (mod (mod .cse28 .cse27) 256) 0))) (.cse22 (<= .cse27 |c_ULTIMATE.start_main1_~x~0#1|)) (.cse8 (<= (mod (+ .cse24 |c_ULTIMATE.start_gcd_test_~b#1|) 256) 127)) (.cse16 (not (= (mod (mod .cse26 .cse25) 256) 0))) (.cse17 (not .cse10)) (.cse18 (<= .cse25 |c_ULTIMATE.start_main1_~x~0#1|))) (let ((.cse4 (or .cse16 .cse17 .cse18)) (.cse2 (not .cse8)) (.cse9 (or .cse20 .cse21 .cse17 .cse22)) (.cse0 (< |c_ULTIMATE.start_gcd_test_~b#1| 0)) (.cse6 (not .cse5)) (.cse14 (<= .cse13 127))) (and (or (let ((.cse3 (let ((.cse11 (+ (- 256) .cse13))) (let ((.cse12 (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse11) 256))) (or .cse10 (not (= 0 (mod (mod .cse11 .cse12) 256))) (<= .cse12 |c_ULTIMATE.start_main1_~x~0#1|)))))) (and (or (let ((.cse1 (and .cse3 .cse4))) (and (or .cse0 .cse1) (or .cse0 .cse2 .cse1))) .cse5) (or .cse6 (let ((.cse7 (and .cse3 .cse9))) (and (or .cse0 .cse7) (or .cse0 .cse8 .cse7)))))) .cse14) (or (let ((.cse15 (= .cse24 0))) (let ((.cse19 (let ((.cse23 (mod (mod |c_ULTIMATE.start_gcd_test_~b#1| .cse13) 256))) (or (not (= (mod (mod .cse13 .cse23) 256) 0)) (and .cse10 (not .cse15)) (<= .cse23 |c_ULTIMATE.start_main1_~x~0#1|) (= .cse13 0))))) (and (or (and (or .cse0 (and (or .cse15 .cse16 .cse17 .cse18) .cse19)) (or (and .cse4 .cse19) .cse0 .cse8)) .cse5) (or (and (or .cse0 .cse2 (and .cse9 .cse19)) (or (and (or .cse15 .cse20 .cse21 .cse17 .cse22) .cse19) .cse0 .cse8)) .cse6)))) (not .cse14))))))))) (= |c_ULTIMATE.start_gcd_test_~b#1| 0)) is different from true