./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e 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/nla-digbench-scaling/fermat2-ll_valuebound20.c -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 cd2a63b33e7bbe230c7b5ef9bb577263b79c304327f57b571a4977a8b534c93c --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 07:15:01,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 07:15:01,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 07:15:01,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 07:15:01,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 07:15:01,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 07:15:01,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 07:15:01,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 07:15:01,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 07:15:01,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 07:15:01,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 07:15:01,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 07:15:01,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 07:15:01,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 07:15:01,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 07:15:01,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 07:15:01,169 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 07:15:01,171 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 07:15:01,172 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 07:15:01,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 07:15:01,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 07:15:01,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 07:15:01,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 07:15:01,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 07:15:01,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 07:15:01,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 07:15:01,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 07:15:01,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 07:15:01,180 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 07:15:01,181 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 07:15:01,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 07:15:01,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 07:15:01,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 07:15:01,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 07:15:01,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 07:15:01,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 07:15:01,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 07:15:01,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 07:15:01,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 07:15:01,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 07:15:01,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 07:15:01,186 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 07:15:01,197 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 07:15:01,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 07:15:01,198 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 07:15:01,198 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 07:15:01,198 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 07:15:01,198 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 07:15:01,199 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 07:15:01,199 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 07:15:01,199 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 07:15:01,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 07:15:01,199 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 07:15:01,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 07:15:01,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 07:15:01,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 07:15:01,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 07:15:01,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 07:15:01,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 07:15:01,200 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 07:15:01,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 07:15:01,201 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 07:15:01,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 07:15:01,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 07:15:01,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 07:15:01,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 07:15:01,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 07:15:01,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 07:15:01,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 07:15:01,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 07:15:01,202 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 07:15:01,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 07:15:01,202 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 07:15:01,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 07:15:01,203 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 07:15:01,203 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 07:15:01,203 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 07:15:01,203 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd2a63b33e7bbe230c7b5ef9bb577263b79c304327f57b571a4977a8b534c93c [2023-02-17 07:15:01,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 07:15:01,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 07:15:01,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 07:15:01,356 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 07:15:01,356 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 07:15:01,357 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound20.c [2023-02-17 07:15:02,473 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 07:15:02,593 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 07:15:02,594 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound20.c [2023-02-17 07:15:02,598 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4cf2eb28/8549915f9e6841f39326e5a8810fd473/FLAGcb05dfc73 [2023-02-17 07:15:02,608 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4cf2eb28/8549915f9e6841f39326e5a8810fd473 [2023-02-17 07:15:02,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 07:15:02,611 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 07:15:02,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 07:15:02,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 07:15:02,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 07:15:02,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 07:15:02" (1/1) ... [2023-02-17 07:15:02,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b096d93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:15:02, skipping insertion in model container [2023-02-17 07:15:02,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 07:15:02" (1/1) ... [2023-02-17 07:15:02,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 07:15:02,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 07:15:02,723 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound20.c[524,537] [2023-02-17 07:15:02,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 07:15:02,744 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 07:15:02,752 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound20.c[524,537] [2023-02-17 07:15:02,757 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 07:15:02,767 INFO L208 MainTranslator]: Completed translation [2023-02-17 07:15:02,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:15:02 WrapperNode [2023-02-17 07:15:02,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 07:15:02,769 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 07:15:02,769 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 07:15:02,769 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 07:15:02,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:15:02" (1/1) ... [2023-02-17 07:15:02,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:15:02" (1/1) ... [2023-02-17 07:15:02,787 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2023-02-17 07:15:02,787 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 07:15:02,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 07:15:02,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 07:15:02,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 07:15:02,794 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:15:02" (1/1) ... [2023-02-17 07:15:02,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:15:02" (1/1) ... [2023-02-17 07:15:02,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:15:02" (1/1) ... [2023-02-17 07:15:02,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:15:02" (1/1) ... [2023-02-17 07:15:02,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:15:02" (1/1) ... [2023-02-17 07:15:02,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:15:02" (1/1) ... [2023-02-17 07:15:02,799 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:15:02" (1/1) ... [2023-02-17 07:15:02,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:15:02" (1/1) ... [2023-02-17 07:15:02,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 07:15:02,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 07:15:02,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 07:15:02,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 07:15:02,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:15:02" (1/1) ... [2023-02-17 07:15:02,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 07:15:02,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 07:15:02,835 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) [2023-02-17 07:15:02,843 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 [2023-02-17 07:15:02,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 07:15:02,870 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-17 07:15:02,870 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-17 07:15:02,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 07:15:02,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 07:15:02,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 07:15:02,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-17 07:15:02,871 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-17 07:15:02,916 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 07:15:02,917 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 07:15:03,054 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 07:15:03,061 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 07:15:03,063 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-17 07:15:03,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 07:15:03 BoogieIcfgContainer [2023-02-17 07:15:03,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 07:15:03,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 07:15:03,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 07:15:03,069 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 07:15:03,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 07:15:02" (1/3) ... [2023-02-17 07:15:03,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7de52e56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 07:15:03, skipping insertion in model container [2023-02-17 07:15:03,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 07:15:02" (2/3) ... [2023-02-17 07:15:03,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7de52e56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 07:15:03, skipping insertion in model container [2023-02-17 07:15:03,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 07:15:03" (3/3) ... [2023-02-17 07:15:03,073 INFO L112 eAbstractionObserver]: Analyzing ICFG fermat2-ll_valuebound20.c [2023-02-17 07:15:03,087 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 07:15:03,087 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 07:15:03,130 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 07:15:03,137 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4e81997c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 07:15:03,137 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 07:15:03,148 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-17 07:15:03,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-17 07:15:03,153 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 07:15:03,154 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 07:15:03,154 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 07:15:03,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 07:15:03,157 INFO L85 PathProgramCache]: Analyzing trace with hash 970763787, now seen corresponding path program 1 times [2023-02-17 07:15:03,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 07:15:03,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201946685] [2023-02-17 07:15:03,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 07:15:03,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 07:15:03,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 07:15:03,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 07:15:03,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201946685] [2023-02-17 07:15:03,244 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-17 07:15:03,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774069545] [2023-02-17 07:15:03,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 07:15:03,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 07:15:03,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 07:15:03,248 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) [2023-02-17 07:15:03,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 07:15:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 07:15:03,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-17 07:15:03,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 07:15:03,321 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-17 07:15:03,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 07:15:03,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774069545] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 07:15:03,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 07:15:03,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 07:15:03,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17573951] [2023-02-17 07:15:03,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 07:15:03,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 07:15:03,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 07:15:03,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 07:15:03,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 07:15:03,345 INFO L87 Difference]: Start difference. First operand has 27 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-17 07:15:03,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 07:15:03,358 INFO L93 Difference]: Finished difference Result 51 states and 74 transitions. [2023-02-17 07:15:03,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 07:15:03,359 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2023-02-17 07:15:03,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 07:15:03,363 INFO L225 Difference]: With dead ends: 51 [2023-02-17 07:15:03,364 INFO L226 Difference]: Without dead ends: 23 [2023-02-17 07:15:03,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 07:15:03,368 INFO L413 NwaCegarLoop]: 32 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, 32 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 [2023-02-17 07:15:03,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 07:15:03,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-02-17 07:15:03,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-02-17 07:15:03,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-17 07:15:03,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2023-02-17 07:15:03,419 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 29 [2023-02-17 07:15:03,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 07:15:03,420 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2023-02-17 07:15:03,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-17 07:15:03,420 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2023-02-17 07:15:03,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-17 07:15:03,421 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 07:15:03,422 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 07:15:03,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-17 07:15:03,622 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 [2023-02-17 07:15:03,623 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 07:15:03,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 07:15:03,623 INFO L85 PathProgramCache]: Analyzing trace with hash -908690225, now seen corresponding path program 1 times [2023-02-17 07:15:03,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 07:15:03,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453054351] [2023-02-17 07:15:03,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 07:15:03,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 07:15:03,637 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 07:15:03,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2015230426] [2023-02-17 07:15:03,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 07:15:03,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 07:15:03,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 07:15:03,639 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) [2023-02-17 07:15:03,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 07:15:03,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 07:15:03,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-17 07:15:03,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 07:15:03,742 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-17 07:15:03,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 07:15:03,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 07:15:03,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453054351] [2023-02-17 07:15:03,743 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 07:15:03,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015230426] [2023-02-17 07:15:03,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015230426] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 07:15:03,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 07:15:03,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 07:15:03,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859935962] [2023-02-17 07:15:03,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 07:15:03,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 07:15:03,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 07:15:03,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 07:15:03,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 07:15:03,746 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-17 07:15:05,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 07:15:07,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 07:15:07,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 07:15:07,449 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2023-02-17 07:15:07,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 07:15:07,450 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2023-02-17 07:15:07,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 07:15:07,451 INFO L225 Difference]: With dead ends: 34 [2023-02-17 07:15:07,451 INFO L226 Difference]: Without dead ends: 32 [2023-02-17 07:15:07,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-17 07:15:07,453 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 7 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-02-17 07:15:07,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 77 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2023-02-17 07:15:07,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-17 07:15:07,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2023-02-17 07:15:07,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-17 07:15:07,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2023-02-17 07:15:07,462 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 29 [2023-02-17 07:15:07,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 07:15:07,464 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2023-02-17 07:15:07,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-17 07:15:07,464 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2023-02-17 07:15:07,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-17 07:15:07,465 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 07:15:07,465 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 07:15:07,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 07:15:07,671 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 [2023-02-17 07:15:07,672 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 07:15:07,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 07:15:07,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1577016431, now seen corresponding path program 1 times [2023-02-17 07:15:07,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 07:15:07,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581701413] [2023-02-17 07:15:07,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 07:15:07,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 07:15:07,689 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 07:15:07,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [293830428] [2023-02-17 07:15:07,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 07:15:07,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 07:15:07,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 07:15:07,696 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) [2023-02-17 07:15:07,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 07:15:07,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 07:15:07,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-17 07:15:07,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 07:15:07,832 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-17 07:15:07,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 07:15:07,966 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-17 07:15:07,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 07:15:07,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581701413] [2023-02-17 07:15:07,969 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 07:15:07,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293830428] [2023-02-17 07:15:07,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293830428] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 07:15:07,969 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 07:15:07,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2023-02-17 07:15:07,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601077130] [2023-02-17 07:15:07,970 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 07:15:07,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-17 07:15:07,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 07:15:07,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-17 07:15:07,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-02-17 07:15:07,974 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-17 07:15:08,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 07:15:08,065 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2023-02-17 07:15:08,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 07:15:08,066 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 35 [2023-02-17 07:15:08,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 07:15:08,066 INFO L225 Difference]: With dead ends: 29 [2023-02-17 07:15:08,066 INFO L226 Difference]: Without dead ends: 0 [2023-02-17 07:15:08,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-02-17 07:15:08,073 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 13 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 07:15:08,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 79 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 07:15:08,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-17 07:15:08,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-17 07:15:08,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2023-02-17 07:15:08,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-17 07:15:08,078 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2023-02-17 07:15:08,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 07:15:08,080 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-17 07:15:08,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-17 07:15:08,080 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-17 07:15:08,080 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-17 07:15:08,083 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-17 07:15:08,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-17 07:15:08,289 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 [2023-02-17 07:15:08,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-17 07:15:08,307 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 35 46) the Hoare annotation is: (let ((.cse0 (+ (+ (+ (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|) (- (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|))) (- (* 2 |ULTIMATE.start_main_~u~0#1|))) (* 2 |ULTIMATE.start_main_~v~0#1|)))) (and (= (* 4 (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) .cse0) (= (* 4 (+ |ULTIMATE.start_main_~A~0#1| 0)) .cse0))) [2023-02-17 07:15:08,307 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-17 07:15:08,307 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2023-02-17 07:15:08,307 INFO L902 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: true [2023-02-17 07:15:08,308 INFO L902 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2023-02-17 07:15:08,308 INFO L902 garLoopResultBuilder]: At program point L25-1(line 25) the Hoare annotation is: true [2023-02-17 07:15:08,308 INFO L902 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: true [2023-02-17 07:15:08,308 INFO L899 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2023-02-17 07:15:08,308 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-17 07:15:08,308 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 19 51) the Hoare annotation is: true [2023-02-17 07:15:08,309 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (= (* 4 (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (+ (+ (+ (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|) (- (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|))) (- (* 2 |ULTIMATE.start_main_~u~0#1|))) (* 2 |ULTIMATE.start_main_~v~0#1|))))) (or .cse0 (and .cse0 (= (mod (+ |ULTIMATE.start_main_~u~0#1| 1) 2) 0) (= |ULTIMATE.start_main_~v~0#1| 1) (= |ULTIMATE.start_main_~r~0#1| (+ (let ((.cse1 (div (+ (- |ULTIMATE.start_main_~u~0#1|) 1) (- 2)))) (* .cse1 .cse1)) (- |ULTIMATE.start_main_~A~0#1|)))))) [2023-02-17 07:15:08,309 INFO L899 garLoopResultBuilder]: For program point L36-1(lines 35 46) no Hoare annotation was computed. [2023-02-17 07:15:08,309 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-17 07:15:08,309 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-17 07:15:08,309 INFO L899 garLoopResultBuilder]: For program point L49(line 49) no Hoare annotation was computed. [2023-02-17 07:15:08,310 INFO L899 garLoopResultBuilder]: For program point L39(lines 39 45) no Hoare annotation was computed. [2023-02-17 07:15:08,310 INFO L895 garLoopResultBuilder]: At program point L39-2(lines 35 46) the Hoare annotation is: (let ((.cse0 (= (* 4 (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (+ (+ (+ (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|) (- (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|))) (- (* 2 |ULTIMATE.start_main_~u~0#1|))) (* 2 |ULTIMATE.start_main_~v~0#1|))))) (or .cse0 (and .cse0 (= (mod (+ |ULTIMATE.start_main_~u~0#1| 1) 2) 0) (= |ULTIMATE.start_main_~v~0#1| 1) (= |ULTIMATE.start_main_~r~0#1| (+ (let ((.cse1 (div (+ (- |ULTIMATE.start_main_~u~0#1|) 1) (- 2)))) (* .cse1 .cse1)) (- |ULTIMATE.start_main_~A~0#1|)))))) [2023-02-17 07:15:08,310 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 8 10) the Hoare annotation is: true [2023-02-17 07:15:08,310 INFO L899 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2023-02-17 07:15:08,310 INFO L899 garLoopResultBuilder]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2023-02-17 07:15:08,310 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2023-02-17 07:15:08,311 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2023-02-17 07:15:08,311 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2023-02-17 07:15:08,311 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2023-02-17 07:15:08,311 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2023-02-17 07:15:08,311 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 17) the Hoare annotation is: true [2023-02-17 07:15:08,311 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2023-02-17 07:15:08,314 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-02-17 07:15:08,316 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-17 07:15:08,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.02 07:15:08 BoogieIcfgContainer [2023-02-17 07:15:08,344 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-17 07:15:08,345 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 07:15:08,345 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 07:15:08,345 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 07:15:08,346 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 07:15:03" (3/4) ... [2023-02-17 07:15:08,348 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-17 07:15:08,354 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-02-17 07:15:08,355 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-17 07:15:08,357 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-02-17 07:15:08,358 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-17 07:15:08,358 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-17 07:15:08,358 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-17 07:15:08,388 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-17 07:15:08,388 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 07:15:08,389 INFO L158 Benchmark]: Toolchain (without parser) took 5777.00ms. Allocated memory was 151.0MB in the beginning and 188.7MB in the end (delta: 37.7MB). Free memory was 105.4MB in the beginning and 147.8MB in the end (delta: -42.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 07:15:08,389 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 151.0MB. Free memory is still 94.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 07:15:08,389 INFO L158 Benchmark]: CACSL2BoogieTranslator took 155.65ms. Allocated memory is still 151.0MB. Free memory was 105.4MB in the beginning and 94.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 07:15:08,389 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.80ms. Allocated memory is still 151.0MB. Free memory was 94.9MB in the beginning and 93.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 07:15:08,389 INFO L158 Benchmark]: Boogie Preprocessor took 13.07ms. Allocated memory is still 151.0MB. Free memory was 93.2MB in the beginning and 92.4MB in the end (delta: 879.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 07:15:08,390 INFO L158 Benchmark]: RCFGBuilder took 263.81ms. Allocated memory is still 151.0MB. Free memory was 92.4MB in the beginning and 82.3MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 07:15:08,390 INFO L158 Benchmark]: TraceAbstraction took 5277.44ms. Allocated memory was 151.0MB in the beginning and 188.7MB in the end (delta: 37.7MB). Free memory was 81.5MB in the beginning and 149.9MB in the end (delta: -68.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 07:15:08,390 INFO L158 Benchmark]: Witness Printer took 43.37ms. Allocated memory is still 188.7MB. Free memory was 149.9MB in the beginning and 147.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 07:15:08,391 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 151.0MB. Free memory is still 94.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 155.65ms. Allocated memory is still 151.0MB. Free memory was 105.4MB in the beginning and 94.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.80ms. Allocated memory is still 151.0MB. Free memory was 94.9MB in the beginning and 93.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.07ms. Allocated memory is still 151.0MB. Free memory was 93.2MB in the beginning and 92.4MB in the end (delta: 879.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 263.81ms. Allocated memory is still 151.0MB. Free memory was 92.4MB in the beginning and 82.3MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5277.44ms. Allocated memory was 151.0MB in the beginning and 188.7MB in the end (delta: 37.7MB). Free memory was 81.5MB in the beginning and 149.9MB in the end (delta: -68.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 43.37ms. Allocated memory is still 188.7MB. Free memory was 149.9MB in the beginning and 147.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.2s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 188 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 115 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 78 IncrementalHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 73 mSDtfsCounter, 78 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 110 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=2, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 20 PreInvPairs, 29 NumberOfFragments, 206 HoareAnnotationTreeSize, 20 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 316 SizeOfPredicates, 11 NumberOfNonLiveVariables, 260 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 98/100 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 4 * (A + r) == u * u + -(v * v) + -(2 * u) + 2 * v || (((4 * (A + r) == u * u + -(v * v) + -(2 * u) + 2 * v && (u + 1) % 2 == 0) && v == 1) && r == (-u + 1) / -2 * ((-u + 1) / -2) + -A) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-02-17 07:15:08,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE