./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/gcd_1+newton_2_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/gcd_1+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 dc4c84af925d120ea9b9db9aa78160f13c1157e642c02b4448c62c56bbe753dd --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 19:34:31,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 19:34:31,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 19:34:31,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 19:34:31,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 19:34:31,670 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 19:34:31,672 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 19:34:31,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 19:34:31,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 19:34:31,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 19:34:31,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 19:34:31,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 19:34:31,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 19:34:31,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 19:34:31,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 19:34:31,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 19:34:31,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 19:34:31,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 19:34:31,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 19:34:31,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 19:34:31,697 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 19:34:31,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 19:34:31,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 19:34:31,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 19:34:31,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 19:34:31,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 19:34:31,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 19:34:31,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 19:34:31,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 19:34:31,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 19:34:31,712 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 19:34:31,712 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 19:34:31,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 19:34:31,714 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 19:34:31,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 19:34:31,717 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 19:34:31,717 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 19:34:31,718 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 19:34:31,718 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 19:34:31,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 19:34:31,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 19:34:31,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 19:34:31,721 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 19:34:31,753 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 19:34:31,754 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 19:34:31,754 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 19:34:31,754 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 19:34:31,755 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 19:34:31,755 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 19:34:31,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 19:34:31,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 19:34:31,756 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 19:34:31,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 19:34:31,758 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 19:34:31,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 19:34:31,758 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 19:34:31,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 19:34:31,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 19:34:31,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 19:34:31,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 19:34:31,759 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 19:34:31,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 19:34:31,759 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 19:34:31,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 19:34:31,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 19:34:31,760 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 19:34:31,760 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 19:34:31,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 19:34:31,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 19:34:31,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 19:34:31,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 19:34:31,761 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 19:34:31,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 19:34:31,762 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 19:34:31,762 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 19:34:31,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 19:34:31,762 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc4c84af925d120ea9b9db9aa78160f13c1157e642c02b4448c62c56bbe753dd [2022-07-19 19:34:31,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 19:34:32,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 19:34:32,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 19:34:32,007 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 19:34:32,007 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 19:34:32,009 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/gcd_1+newton_2_1.i [2022-07-19 19:34:32,070 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d47a164b4/4062509a4c344993835ee42bbae48327/FLAG8046ce021 [2022-07-19 19:34:32,457 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 19:34:32,458 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/gcd_1+newton_2_1.i [2022-07-19 19:34:32,465 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d47a164b4/4062509a4c344993835ee42bbae48327/FLAG8046ce021 [2022-07-19 19:34:32,871 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d47a164b4/4062509a4c344993835ee42bbae48327 [2022-07-19 19:34:32,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 19:34:32,874 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 19:34:32,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 19:34:32,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 19:34:32,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 19:34:32,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 07:34:32" (1/1) ... [2022-07-19 19:34:32,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46f70c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:34:32, skipping insertion in model container [2022-07-19 19:34:32,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 07:34:32" (1/1) ... [2022-07-19 19:34:32,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 19:34:32,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 19:34:33,031 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_1+newton_2_1.i[1226,1239] [2022-07-19 19:34:33,049 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_1+newton_2_1.i[2807,2820] [2022-07-19 19:34:33,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 19:34:33,056 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 19:34:33,066 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_1+newton_2_1.i[1226,1239] [2022-07-19 19:34:33,076 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_1+newton_2_1.i[2807,2820] [2022-07-19 19:34:33,077 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 19:34:33,093 INFO L208 MainTranslator]: Completed translation [2022-07-19 19:34:33,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:34:33 WrapperNode [2022-07-19 19:34:33,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 19:34:33,095 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 19:34:33,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 19:34:33,096 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 19:34:33,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:34:33" (1/1) ... [2022-07-19 19:34:33,110 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:34:33" (1/1) ... [2022-07-19 19:34:33,127 INFO L137 Inliner]: procedures = 27, calls = 16, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 77 [2022-07-19 19:34:33,131 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 19:34:33,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 19:34:33,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 19:34:33,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 19:34:33,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:34:33" (1/1) ... [2022-07-19 19:34:33,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:34:33" (1/1) ... [2022-07-19 19:34:33,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:34:33" (1/1) ... [2022-07-19 19:34:33,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:34:33" (1/1) ... [2022-07-19 19:34:33,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:34:33" (1/1) ... [2022-07-19 19:34:33,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:34:33" (1/1) ... [2022-07-19 19:34:33,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:34:33" (1/1) ... [2022-07-19 19:34:33,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 19:34:33,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 19:34:33,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 19:34:33,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 19:34:33,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:34:33" (1/1) ... [2022-07-19 19:34:33,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 19:34:33,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:34:33,221 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 19:34:33,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 19:34:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 19:34:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-07-19 19:34:33,265 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-07-19 19:34:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-07-19 19:34:33,266 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-07-19 19:34:33,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 19:34:33,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 19:34:33,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 19:34:33,320 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 19:34:33,322 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 19:34:33,455 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 19:34:33,460 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 19:34:33,460 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 19:34:33,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 07:34:33 BoogieIcfgContainer [2022-07-19 19:34:33,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 19:34:33,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 19:34:33,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 19:34:33,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 19:34:33,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 07:34:32" (1/3) ... [2022-07-19 19:34:33,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a76217e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 07:34:33, skipping insertion in model container [2022-07-19 19:34:33,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:34:33" (2/3) ... [2022-07-19 19:34:33,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a76217e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 07:34:33, skipping insertion in model container [2022-07-19 19:34:33,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 07:34:33" (3/3) ... [2022-07-19 19:34:33,473 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd_1+newton_2_1.i [2022-07-19 19:34:33,484 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 19:34:33,485 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 19:34:33,544 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 19:34:33,550 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@7735fc58, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2ade7be7 [2022-07-19 19:34:33,551 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 19:34:33,555 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 19:34:33,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-19 19:34:33,572 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:34:33,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:34:33,574 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:34:33,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:34:33,580 INFO L85 PathProgramCache]: Analyzing trace with hash -247750664, now seen corresponding path program 1 times [2022-07-19 19:34:33,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:34:33,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788176910] [2022-07-19 19:34:33,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:34:33,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:34:33,673 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 19:34:33,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [314802554] [2022-07-19 19:34:33,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:34:33,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 19:34:33,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:34:33,679 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 19:34:33,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 19:34:33,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:34:33,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-19 19:34:33,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 19:34:33,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:34:33,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 19:34:33,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:34:33,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788176910] [2022-07-19 19:34:33,774 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 19:34:33,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314802554] [2022-07-19 19:34:33,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314802554] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:34:33,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:34:33,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 19:34:33,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526191832] [2022-07-19 19:34:33,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:34:33,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 19:34:33,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:34:33,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 19:34:33,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 19:34:33,809 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 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 19:34:33,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:34:33,831 INFO L93 Difference]: Finished difference Result 66 states and 79 transitions. [2022-07-19 19:34:33,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 19:34:33,832 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-19 19:34:33,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:34:33,837 INFO L225 Difference]: With dead ends: 66 [2022-07-19 19:34:33,837 INFO L226 Difference]: Without dead ends: 29 [2022-07-19 19:34:33,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 19:34:33,843 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:34:33,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 19:34:33,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-07-19 19:34:33,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-07-19 19:34:33,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 19:34:33,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-07-19 19:34:33,875 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 11 [2022-07-19 19:34:33,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:34:33,876 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-07-19 19:34:33,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 19:34:33,876 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-07-19 19:34:33,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-19 19:34:33,878 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:34:33,878 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:34:33,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-19 19:34:34,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-19 19:34:34,079 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:34:34,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:34:34,081 INFO L85 PathProgramCache]: Analyzing trace with hash -251444748, now seen corresponding path program 1 times [2022-07-19 19:34:34,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:34:34,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112788398] [2022-07-19 19:34:34,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:34:34,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:34:34,100 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 19:34:34,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [452837023] [2022-07-19 19:34:34,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:34:34,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 19:34:34,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:34:34,104 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 19:34:34,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 19:34:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:34:34,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 19:34:34,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 19:34:34,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:34:34,191 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 19:34:34,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:34:34,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112788398] [2022-07-19 19:34:34,192 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 19:34:34,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452837023] [2022-07-19 19:34:34,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452837023] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:34:34,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:34:34,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 19:34:34,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107505420] [2022-07-19 19:34:34,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:34:34,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 19:34:34,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:34:34,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 19:34:34,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 19:34:34,195 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 19:34:34,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:34:34,208 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2022-07-19 19:34:34,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 19:34:34,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-19 19:34:34,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:34:34,210 INFO L225 Difference]: With dead ends: 36 [2022-07-19 19:34:34,210 INFO L226 Difference]: Without dead ends: 30 [2022-07-19 19:34:34,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 19:34:34,212 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 2 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:34:34,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 56 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 19:34:34,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-07-19 19:34:34,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-07-19 19:34:34,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 19:34:34,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-07-19 19:34:34,219 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 11 [2022-07-19 19:34:34,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:34:34,219 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-07-19 19:34:34,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 19:34:34,220 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-07-19 19:34:34,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-19 19:34:34,220 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:34:34,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:34:34,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 19:34:34,447 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,SelfDestructingSolverStorable1 [2022-07-19 19:34:34,447 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:34:34,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:34:34,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1673157840, now seen corresponding path program 1 times [2022-07-19 19:34:34,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:34:34,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394934260] [2022-07-19 19:34:34,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:34:34,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:34:34,462 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 19:34:34,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1430269484] [2022-07-19 19:34:34,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:34:34,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 19:34:34,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:34:34,466 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 19:34:34,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 19:34:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:34:34,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-19 19:34:34,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 19:34:34,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:34:34,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 19:34:34,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:34:34,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:34:34,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394934260] [2022-07-19 19:34:34,646 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 19:34:34,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430269484] [2022-07-19 19:34:34,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430269484] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 19:34:34,647 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 19:34:34,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2022-07-19 19:34:34,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249727] [2022-07-19 19:34:34,648 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 19:34:34,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 19:34:34,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:34:34,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 19:34:34,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 19:34:34,651 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 19:34:34,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:34:34,721 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2022-07-19 19:34:34,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 19:34:34,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-07-19 19:34:34,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:34:34,724 INFO L225 Difference]: With dead ends: 36 [2022-07-19 19:34:34,725 INFO L226 Difference]: Without dead ends: 31 [2022-07-19 19:34:34,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:34:34,727 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 4 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:34:34,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 128 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 19:34:34,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-07-19 19:34:34,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-07-19 19:34:34,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 19:34:34,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-07-19 19:34:34,739 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 12 [2022-07-19 19:34:34,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:34:34,740 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-07-19 19:34:34,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 19:34:34,741 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-07-19 19:34:34,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-19 19:34:34,742 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:34:34,742 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:34:34,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-19 19:34:34,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 19:34:34,964 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:34:34,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:34:34,965 INFO L85 PathProgramCache]: Analyzing trace with hash -276630798, now seen corresponding path program 2 times [2022-07-19 19:34:34,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:34:34,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443749408] [2022-07-19 19:34:34,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:34:34,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:34:34,975 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 19:34:34,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [375309512] [2022-07-19 19:34:34,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 19:34:34,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 19:34:34,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:34:34,984 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 19:34:34,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 19:34:40,439 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 19:34:40,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 19:34:40,443 WARN L261 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-19 19:34:40,446 INFO L286 TraceCheckSpWp]: Computing forward predicates...