./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_3+newton_2_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 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_2_1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8b7456a459f55f53693cf2fdc2ecfa85b54010339cb65d2080cc061b58d33cf8 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 11:56:17,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 11:56:17,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 11:56:17,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 11:56:17,873 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 11:56:17,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 11:56:17,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 11:56:17,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 11:56:17,883 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 11:56:17,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 11:56:17,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 11:56:17,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 11:56:17,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 11:56:17,893 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 11:56:17,894 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 11:56:17,895 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 11:56:17,897 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 11:56:17,898 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 11:56:17,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 11:56:17,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 11:56:17,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 11:56:17,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 11:56:17,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 11:56:17,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 11:56:17,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 11:56:17,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 11:56:17,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 11:56:17,915 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 11:56:17,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 11:56:17,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 11:56:17,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 11:56:17,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 11:56:17,918 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 11:56:17,919 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 11:56:17,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 11:56:17,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 11:56:17,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 11:56:17,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 11:56:17,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 11:56:17,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 11:56:17,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 11:56:17,923 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 11:56:17,947 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 11:56:17,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 11:56:17,950 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 11:56:17,950 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 11:56:17,951 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 11:56:17,951 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 11:56:17,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 11:56:17,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 11:56:17,952 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 11:56:17,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 11:56:17,953 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 11:56:17,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 11:56:17,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 11:56:17,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 11:56:17,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 11:56:17,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 11:56:17,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 11:56:17,954 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 11:56:17,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 11:56:17,954 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 11:56:17,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 11:56:17,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 11:56:17,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 11:56:17,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 11:56:17,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:56:17,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 11:56:17,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 11:56:17,956 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 11:56:17,956 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 11:56:17,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 11:56:17,956 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 11:56:17,956 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 11:56:17,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 11:56:17,957 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 11:56:17,957 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b7456a459f55f53693cf2fdc2ecfa85b54010339cb65d2080cc061b58d33cf8 [2021-12-15 11:56:18,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 11:56:18,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 11:56:18,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 11:56:18,163 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 11:56:18,163 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 11:56:18,164 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_3+newton_2_1.i [2021-12-15 11:56:18,222 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1005e4ffe/2d3d19b1bc624c938c7710252ce11994/FLAG561e74d2b [2021-12-15 11:56:18,600 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 11:56:18,601 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_3+newton_2_1.i [2021-12-15 11:56:18,610 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1005e4ffe/2d3d19b1bc624c938c7710252ce11994/FLAG561e74d2b [2021-12-15 11:56:18,624 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1005e4ffe/2d3d19b1bc624c938c7710252ce11994 [2021-12-15 11:56:18,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 11:56:18,629 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 11:56:18,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 11:56:18,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 11:56:18,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 11:56:18,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:56:18" (1/1) ... [2021-12-15 11:56:18,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@419fff3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:18, skipping insertion in model container [2021-12-15 11:56:18,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:56:18" (1/1) ... [2021-12-15 11:56:18,639 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 11:56:18,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 11:56:18,825 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_2_1.i[1226,1239] [2021-12-15 11:56:18,852 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_2_1.i[2841,2854] [2021-12-15 11:56:18,853 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:56:18,858 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 11:56:18,866 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_2_1.i[1226,1239] [2021-12-15 11:56:18,873 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_2_1.i[2841,2854] [2021-12-15 11:56:18,873 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 11:56:18,882 INFO L208 MainTranslator]: Completed translation [2021-12-15 11:56:18,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:18 WrapperNode [2021-12-15 11:56:18,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 11:56:18,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 11:56:18,884 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 11:56:18,884 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 11:56:18,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:18" (1/1) ... [2021-12-15 11:56:18,894 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:18" (1/1) ... [2021-12-15 11:56:18,908 INFO L137 Inliner]: procedures = 27, calls = 16, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 77 [2021-12-15 11:56:18,908 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 11:56:18,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 11:56:18,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 11:56:18,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 11:56:18,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:18" (1/1) ... [2021-12-15 11:56:18,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:18" (1/1) ... [2021-12-15 11:56:18,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:18" (1/1) ... [2021-12-15 11:56:18,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:18" (1/1) ... [2021-12-15 11:56:18,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:18" (1/1) ... [2021-12-15 11:56:18,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:18" (1/1) ... [2021-12-15 11:56:18,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:18" (1/1) ... [2021-12-15 11:56:18,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 11:56:18,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 11:56:18,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 11:56:18,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 11:56:18,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:18" (1/1) ... [2021-12-15 11:56:18,937 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 11:56:18,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:56:18,957 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) [2021-12-15 11:56:18,963 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 [2021-12-15 11:56:18,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 11:56:18,984 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2021-12-15 11:56:18,984 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2021-12-15 11:56:18,984 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-12-15 11:56:18,985 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-12-15 11:56:18,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 11:56:18,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 11:56:18,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 11:56:19,034 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 11:56:19,035 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 11:56:19,188 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 11:56:19,192 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 11:56:19,193 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 11:56:19,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:56:19 BoogieIcfgContainer [2021-12-15 11:56:19,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 11:56:19,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 11:56:19,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 11:56:19,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 11:56:19,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:56:18" (1/3) ... [2021-12-15 11:56:19,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59cbc58b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:56:19, skipping insertion in model container [2021-12-15 11:56:19,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:56:18" (2/3) ... [2021-12-15 11:56:19,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59cbc58b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:56:19, skipping insertion in model container [2021-12-15 11:56:19,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:56:19" (3/3) ... [2021-12-15 11:56:19,200 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_2_1.i [2021-12-15 11:56:19,203 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 11:56:19,203 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 11:56:19,234 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 11:56:19,239 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 11:56:19,239 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 11:56:19,264 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) [2021-12-15 11:56:19,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-15 11:56:19,267 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:56:19,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:56:19,268 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:56:19,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:56:19,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1709385323, now seen corresponding path program 1 times [2021-12-15 11:56:19,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:56:19,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491675292] [2021-12-15 11:56:19,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:56:19,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:56:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:56:19,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:56:19,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:56:19,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491675292] [2021-12-15 11:56:19,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491675292] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:56:19,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:56:19,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 11:56:19,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970044551] [2021-12-15 11:56:19,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:56:19,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 11:56:19,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:56:19,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 11:56:19,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 11:56:19,505 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) [2021-12-15 11:56:19,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:56:19,563 INFO L93 Difference]: Finished difference Result 90 states and 110 transitions. [2021-12-15 11:56:19,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 11:56:19,565 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 [2021-12-15 11:56:19,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:56:19,571 INFO L225 Difference]: With dead ends: 90 [2021-12-15 11:56:19,571 INFO L226 Difference]: Without dead ends: 36 [2021-12-15 11:56:19,574 INFO L932 BasicCegarLoop]: 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 [2021-12-15 11:56:19,579 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 23 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 119 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 [2021-12-15 11:56:19,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 119 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:56:19,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-15 11:56:19,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2021-12-15 11:56:19,609 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) [2021-12-15 11:56:19,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2021-12-15 11:56:19,611 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 11 [2021-12-15 11:56:19,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:56:19,611 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2021-12-15 11:56:19,612 INFO L471 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) [2021-12-15 11:56:19,612 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2021-12-15 11:56:19,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-15 11:56:19,613 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:56:19,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:56:19,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 11:56:19,614 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:56:19,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:56:19,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1776235347, now seen corresponding path program 1 times [2021-12-15 11:56:19,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:56:19,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590566492] [2021-12-15 11:56:19,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:56:19,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:56:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:56:19,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:56:19,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:56:19,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590566492] [2021-12-15 11:56:19,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590566492] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 11:56:19,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 11:56:19,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-15 11:56:19,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843939044] [2021-12-15 11:56:19,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 11:56:19,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 11:56:19,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:56:19,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 11:56:19,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-15 11:56:19,703 INFO L87 Difference]: Start difference. First operand 29 states and 32 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) [2021-12-15 11:56:19,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:56:19,767 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2021-12-15 11:56:19,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-15 11:56:19,768 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 [2021-12-15 11:56:19,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:56:19,768 INFO L225 Difference]: With dead ends: 36 [2021-12-15 11:56:19,768 INFO L226 Difference]: Without dead ends: 30 [2021-12-15 11:56:19,769 INFO L932 BasicCegarLoop]: 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 [2021-12-15 11:56:19,769 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 130 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 [2021-12-15 11:56:19,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 130 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 11:56:19,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-12-15 11:56:19,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-12-15 11:56:19,773 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) [2021-12-15 11:56:19,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-12-15 11:56:19,774 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 11 [2021-12-15 11:56:19,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:56:19,776 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-12-15 11:56:19,776 INFO L471 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) [2021-12-15 11:56:19,776 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-12-15 11:56:19,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-15 11:56:19,777 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:56:19,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:56:19,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 11:56:19,777 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:56:19,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:56:19,777 INFO L85 PathProgramCache]: Analyzing trace with hash 830014046, now seen corresponding path program 1 times [2021-12-15 11:56:19,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:56:19,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640592390] [2021-12-15 11:56:19,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:56:19,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:56:19,785 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-15 11:56:19,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1863448020] [2021-12-15 11:56:19,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:56:19,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 11:56:19,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:56:19,792 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) [2021-12-15 11:56:19,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-15 11:56:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 11:56:19,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-15 11:56:19,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 11:56:49,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:56:49,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 11:56:58,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:56:58,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:56:58,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640592390] [2021-12-15 11:56:58,446 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-15 11:56:58,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863448020] [2021-12-15 11:56:58,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863448020] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 11:56:58,446 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-15 11:56:58,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-12-15 11:56:58,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243748599] [2021-12-15 11:56:58,446 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-15 11:56:58,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-15 11:56:58,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:56:58,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-15 11:56:58,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=208, Unknown=10, NotChecked=0, Total=272 [2021-12-15 11:56:58,448 INFO L87 Difference]: Start difference. First operand 30 states and 33 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) [2021-12-15 11:57:01,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:57:01,295 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2021-12-15 11:57:01,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-15 11:57:01,295 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 [2021-12-15 11:57:01,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:57:01,297 INFO L225 Difference]: With dead ends: 42 [2021-12-15 11:57:01,297 INFO L226 Difference]: Without dead ends: 33 [2021-12-15 11:57:01,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 39.9s TimeCoverageRelationStatistics Valid=74, Invalid=257, Unknown=11, NotChecked=0, Total=342 [2021-12-15 11:57:01,301 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 5 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 11:57:01,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 231 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 25 Unchecked, 0.0s Time] [2021-12-15 11:57:01,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-12-15 11:57:01,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2021-12-15 11:57:01,306 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) [2021-12-15 11:57:01,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2021-12-15 11:57:01,307 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 12 [2021-12-15 11:57:01,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:57:01,307 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2021-12-15 11:57:01,307 INFO L471 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) [2021-12-15 11:57:01,307 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2021-12-15 11:57:01,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-15 11:57:01,307 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:57:01,307 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:57:01,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-15 11:57:01,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 11:57:01,510 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:57:01,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:57:01,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1561924787, now seen corresponding path program 2 times [2021-12-15 11:57:01,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:57:01,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104434929] [2021-12-15 11:57:01,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:57:01,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:57:01,517 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-15 11:57:01,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [216758784] [2021-12-15 11:57:01,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-15 11:57:01,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 11:57:01,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:57:01,519 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) [2021-12-15 11:57:01,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-15 11:57:01,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-15 11:57:01,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 11:57:01,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-15 11:57:01,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 11:57:07,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:57:07,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 11:57:23,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 11:57:23,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 11:57:23,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104434929] [2021-12-15 11:57:23,975 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-15 11:57:23,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216758784] [2021-12-15 11:57:23,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216758784] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 11:57:23,975 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-15 11:57:23,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-12-15 11:57:23,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405962854] [2021-12-15 11:57:23,976 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-15 11:57:23,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-15 11:57:23,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 11:57:23,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-15 11:57:23,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=213, Unknown=6, NotChecked=0, Total=272 [2021-12-15 11:57:23,977 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) [2021-12-15 11:57:37,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 11:57:37,322 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2021-12-15 11:57:37,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-15 11:57:37,323 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 [2021-12-15 11:57:37,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 11:57:37,323 INFO L225 Difference]: With dead ends: 45 [2021-12-15 11:57:37,323 INFO L226 Difference]: Without dead ends: 35 [2021-12-15 11:57:37,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 29.8s TimeCoverageRelationStatistics Valid=88, Invalid=364, Unknown=10, NotChecked=0, Total=462 [2021-12-15 11:57:37,324 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 24 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 11:57:37,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 251 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 27 Invalid, 0 Unknown, 35 Unchecked, 0.1s Time] [2021-12-15 11:57:37,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-12-15 11:57:37,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2021-12-15 11:57:37,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 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) [2021-12-15 11:57:37,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-12-15 11:57:37,327 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 13 [2021-12-15 11:57:37,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 11:57:37,327 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-12-15 11:57:37,327 INFO L471 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) [2021-12-15 11:57:37,328 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-12-15 11:57:37,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-15 11:57:37,328 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 11:57:37,328 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 11:57:37,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-15 11:57:37,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-15 11:57:37,529 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 11:57:37,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 11:57:37,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1518646018, now seen corresponding path program 3 times [2021-12-15 11:57:37,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 11:57:37,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471778134] [2021-12-15 11:57:37,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 11:57:37,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 11:57:37,537 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-15 11:57:37,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1313057182] [2021-12-15 11:57:37,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-15 11:57:37,538 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 11:57:37,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 11:57:37,549 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) [2021-12-15 11:57:37,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-15 11:57:37,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-15 11:57:37,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 11:57:37,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 36 conjunts are in the unsatisfiable core [2021-12-15 11:57:37,615 INFO L286 TraceCheckSpWp]: Computing forward predicates...