./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/fermat1-ll.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/fermat1-ll.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 c5787d4099664297951b30a30ca371dd536df07843738ed8698fe723430a974c --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 16:18:12,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 16:18:12,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 16:18:12,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 16:18:12,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 16:18:12,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 16:18:12,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 16:18:12,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 16:18:12,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 16:18:12,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 16:18:12,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 16:18:12,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 16:18:12,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 16:18:12,069 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 16:18:12,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 16:18:12,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 16:18:12,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 16:18:12,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 16:18:12,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 16:18:12,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 16:18:12,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 16:18:12,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 16:18:12,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 16:18:12,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 16:18:12,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 16:18:12,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 16:18:12,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 16:18:12,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 16:18:12,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 16:18:12,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 16:18:12,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 16:18:12,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 16:18:12,092 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 16:18:12,093 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 16:18:12,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 16:18:12,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 16:18:12,095 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 16:18:12,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 16:18:12,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 16:18:12,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 16:18:12,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 16:18:12,099 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 16:18:12,142 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 16:18:12,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 16:18:12,143 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 16:18:12,143 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 16:18:12,144 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 16:18:12,144 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 16:18:12,145 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 16:18:12,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 16:18:12,146 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 16:18:12,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 16:18:12,147 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 16:18:12,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 16:18:12,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 16:18:12,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 16:18:12,148 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 16:18:12,148 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 16:18:12,148 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 16:18:12,148 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 16:18:12,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 16:18:12,149 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 16:18:12,149 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 16:18:12,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 16:18:12,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 16:18:12,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 16:18:12,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 16:18:12,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 16:18:12,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 16:18:12,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 16:18:12,151 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 16:18:12,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 16:18:12,151 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 16:18:12,151 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 16:18:12,152 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 16:18:12,152 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 16:18:12,152 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 16:18:12,152 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5787d4099664297951b30a30ca371dd536df07843738ed8698fe723430a974c [2023-02-18 16:18:12,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 16:18:12,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 16:18:12,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 16:18:12,385 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 16:18:12,386 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 16:18:12,386 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/fermat1-ll.c [2023-02-18 16:18:13,499 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 16:18:13,678 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 16:18:13,678 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/fermat1-ll.c [2023-02-18 16:18:13,683 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59d1991c1/2ab6202cef854dbd88836e41423a64d9/FLAGd7919a651 [2023-02-18 16:18:13,696 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59d1991c1/2ab6202cef854dbd88836e41423a64d9 [2023-02-18 16:18:13,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 16:18:13,699 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 16:18:13,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 16:18:13,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 16:18:13,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 16:18:13,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 04:18:13" (1/1) ... [2023-02-18 16:18:13,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71ef9860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:13, skipping insertion in model container [2023-02-18 16:18:13,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 04:18:13" (1/1) ... [2023-02-18 16:18:13,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 16:18:13,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 16:18:13,884 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/fermat1-ll.c[535,548] [2023-02-18 16:18:13,916 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 16:18:13,930 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 16:18:13,943 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/fermat1-ll.c[535,548] [2023-02-18 16:18:13,968 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 16:18:13,983 INFO L208 MainTranslator]: Completed translation [2023-02-18 16:18:13,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:13 WrapperNode [2023-02-18 16:18:13,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 16:18:13,985 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 16:18:13,985 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 16:18:13,985 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 16:18:13,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:13" (1/1) ... [2023-02-18 16:18:14,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:13" (1/1) ... [2023-02-18 16:18:14,024 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2023-02-18 16:18:14,025 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 16:18:14,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 16:18:14,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 16:18:14,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 16:18:14,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:13" (1/1) ... [2023-02-18 16:18:14,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:13" (1/1) ... [2023-02-18 16:18:14,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:13" (1/1) ... [2023-02-18 16:18:14,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:13" (1/1) ... [2023-02-18 16:18:14,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:13" (1/1) ... [2023-02-18 16:18:14,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:13" (1/1) ... [2023-02-18 16:18:14,058 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:13" (1/1) ... [2023-02-18 16:18:14,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:13" (1/1) ... [2023-02-18 16:18:14,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 16:18:14,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 16:18:14,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 16:18:14,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 16:18:14,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:13" (1/1) ... [2023-02-18 16:18:14,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 16:18:14,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:18:14,098 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) [2023-02-18 16:18:14,120 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 [2023-02-18 16:18:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 16:18:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-18 16:18:14,136 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-18 16:18:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 16:18:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 16:18:14,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 16:18:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-18 16:18:14,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-18 16:18:14,213 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 16:18:14,216 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 16:18:14,368 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 16:18:14,375 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 16:18:14,376 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-18 16:18:14,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:18:14 BoogieIcfgContainer [2023-02-18 16:18:14,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 16:18:14,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 16:18:14,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 16:18:14,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 16:18:14,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 04:18:13" (1/3) ... [2023-02-18 16:18:14,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@168d5b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 04:18:14, skipping insertion in model container [2023-02-18 16:18:14,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:13" (2/3) ... [2023-02-18 16:18:14,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@168d5b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 04:18:14, skipping insertion in model container [2023-02-18 16:18:14,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:18:14" (3/3) ... [2023-02-18 16:18:14,389 INFO L112 eAbstractionObserver]: Analyzing ICFG fermat1-ll.c [2023-02-18 16:18:14,404 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 16:18:14,405 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 16:18:14,452 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 16:18:14,456 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;@36d5d498, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 16:18:14,457 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 16:18:14,460 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 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) [2023-02-18 16:18:14,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-18 16:18:14,467 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:18:14,468 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:18:14,468 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:18:14,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:18:14,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1029222232, now seen corresponding path program 1 times [2023-02-18 16:18:14,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:18:14,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625323855] [2023-02-18 16:18:14,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:18:14,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:18:14,559 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 16:18:14,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1102429344] [2023-02-18 16:18:14,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:18:14,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:18:14,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:18:14,565 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) [2023-02-18 16:18:14,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 16:18:14,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:18:14,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-18 16:18:14,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:18:14,679 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 16:18:14,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 16:18:14,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:18:14,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625323855] [2023-02-18 16:18:14,680 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 16:18:14,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102429344] [2023-02-18 16:18:14,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102429344] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 16:18:14,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 16:18:14,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 16:18:14,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146956359] [2023-02-18 16:18:14,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 16:18:14,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 16:18:14,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:18:14,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 16:18:14,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 16:18:14,742 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.631578947368421) internal successors, (31), 20 states have internal predecessors, (31), 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 16:18:14,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:18:14,785 INFO L93 Difference]: Finished difference Result 55 states and 88 transitions. [2023-02-18 16:18:14,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 16:18:14,788 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-02-18 16:18:14,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:18:14,794 INFO L225 Difference]: With dead ends: 55 [2023-02-18 16:18:14,794 INFO L226 Difference]: Without dead ends: 25 [2023-02-18 16:18:14,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 16:18:14,801 INFO L413 NwaCegarLoop]: 35 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, 35 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 [2023-02-18 16:18:14,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 16:18:14,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-18 16:18:14,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-02-18 16:18:14,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 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) [2023-02-18 16:18:14,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2023-02-18 16:18:14,839 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 18 [2023-02-18 16:18:14,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:18:14,840 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2023-02-18 16:18:14,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 16:18:14,841 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2023-02-18 16:18:14,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-18 16:18:14,843 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:18:14,843 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:18:14,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 16:18:15,049 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 [2023-02-18 16:18:15,050 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:18:15,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:18:15,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1400171261, now seen corresponding path program 1 times [2023-02-18 16:18:15,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:18:15,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099630930] [2023-02-18 16:18:15,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:18:15,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:18:15,063 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 16:18:15,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1238873533] [2023-02-18 16:18:15,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:18:15,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:18:15,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:18:15,065 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) [2023-02-18 16:18:15,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 16:18:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:18:15,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-18 16:18:15,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:18:15,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 16:18:15,214 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 16:18:15,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:18:15,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099630930] [2023-02-18 16:18:15,215 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 16:18:15,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238873533] [2023-02-18 16:18:15,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238873533] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 16:18:15,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 16:18:15,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 16:18:15,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668678755] [2023-02-18 16:18:15,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 16:18:15,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 16:18:15,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:18:15,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 16:18:15,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 16:18:15,225 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 16:18:17,791 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 [] [2023-02-18 16:18:20,037 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 [] [2023-02-18 16:18:22,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:18:22,019 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2023-02-18 16:18:22,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 16:18:22,020 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-02-18 16:18:22,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:18:22,021 INFO L225 Difference]: With dead ends: 41 [2023-02-18 16:18:22,021 INFO L226 Difference]: Without dead ends: 39 [2023-02-18 16:18:22,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-18 16:18:22,023 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 11 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-02-18 16:18:22,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 80 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 2 Unknown, 0 Unchecked, 6.8s Time] [2023-02-18 16:18:22,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-02-18 16:18:22,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2023-02-18 16:18:22,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.28) internal successors, (32), 26 states have internal predecessors, (32), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-18 16:18:22,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2023-02-18 16:18:22,039 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 49 transitions. Word has length 18 [2023-02-18 16:18:22,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:18:22,040 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 49 transitions. [2023-02-18 16:18:22,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 16:18:22,043 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 49 transitions. [2023-02-18 16:18:22,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-18 16:18:22,044 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:18:22,044 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:18:22,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-18 16:18:22,245 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 [2023-02-18 16:18:22,245 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:18:22,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:18:22,246 INFO L85 PathProgramCache]: Analyzing trace with hash 17992522, now seen corresponding path program 1 times [2023-02-18 16:18:22,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:18:22,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048170666] [2023-02-18 16:18:22,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:18:22,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:18:22,261 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 16:18:22,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1511834674] [2023-02-18 16:18:22,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:18:22,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:18:22,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:18:22,264 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) [2023-02-18 16:18:22,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 16:18:22,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:18:22,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-18 16:18:22,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:18:22,395 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 16:18:22,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 16:18:22,505 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 16:18:22,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:18:22,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048170666] [2023-02-18 16:18:22,506 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 16:18:22,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511834674] [2023-02-18 16:18:22,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511834674] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 16:18:22,507 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 16:18:22,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2023-02-18 16:18:22,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532067519] [2023-02-18 16:18:22,507 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 16:18:22,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-18 16:18:22,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:18:22,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-18 16:18:22,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-02-18 16:18:22,509 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-18 16:18:22,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:18:22,633 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2023-02-18 16:18:22,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 16:18:22,634 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2023-02-18 16:18:22,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:18:22,634 INFO L225 Difference]: With dead ends: 38 [2023-02-18 16:18:22,634 INFO L226 Difference]: Without dead ends: 0 [2023-02-18 16:18:22,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-02-18 16:18:22,636 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 22 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 16:18:22,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 80 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 16:18:22,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-18 16:18:22,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-18 16:18:22,638 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) [2023-02-18 16:18:22,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-18 16:18:22,638 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2023-02-18 16:18:22,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:18:22,638 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-18 16:18:22,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-18 16:18:22,639 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-18 16:18:22,639 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-18 16:18:22,641 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-18 16:18:22,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-18 16:18:22,851 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 [2023-02-18 16:18:22,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-18 16:18:22,864 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 19 57) the Hoare annotation is: true [2023-02-18 16:18:22,866 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-18 16:18:22,866 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-18 16:18:22,866 INFO L902 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: true [2023-02-18 16:18:22,867 INFO L902 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: true [2023-02-18 16:18:22,867 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-18 16:18:22,867 INFO L895 garLoopResultBuilder]: At program point L33-2(lines 33 53) 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))) [2023-02-18 16:18:22,867 INFO L895 garLoopResultBuilder]: At program point L46-1(lines 46 52) 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|)))))) [2023-02-18 16:18:22,868 INFO L895 garLoopResultBuilder]: At program point L46-2(lines 33 53) 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|)))))) [2023-02-18 16:18:22,868 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-18 16:18:22,868 INFO L895 garLoopResultBuilder]: At program point L38-2(lines 38 44) 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|)))))) [2023-02-18 16:18:22,869 INFO L895 garLoopResultBuilder]: At program point L34(line 34) 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|)))))) [2023-02-18 16:18:22,869 INFO L899 garLoopResultBuilder]: For program point L34-1(lines 33 53) no Hoare annotation was computed. [2023-02-18 16:18:22,869 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2023-02-18 16:18:22,869 INFO L899 garLoopResultBuilder]: For program point L55(line 55) no Hoare annotation was computed. [2023-02-18 16:18:22,869 INFO L895 garLoopResultBuilder]: At program point L47(line 47) 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|)))))) [2023-02-18 16:18:22,869 INFO L899 garLoopResultBuilder]: For program point L47-1(lines 46 52) no Hoare annotation was computed. [2023-02-18 16:18:22,870 INFO L895 garLoopResultBuilder]: At program point L39(line 39) 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|)))))) [2023-02-18 16:18:22,870 INFO L899 garLoopResultBuilder]: For program point L39-1(lines 38 44) no Hoare annotation was computed. [2023-02-18 16:18:22,870 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 8 10) the Hoare annotation is: true [2023-02-18 16:18:22,870 INFO L899 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2023-02-18 16:18:22,870 INFO L899 garLoopResultBuilder]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2023-02-18 16:18:22,870 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2023-02-18 16:18:22,871 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2023-02-18 16:18:22,871 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2023-02-18 16:18:22,871 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2023-02-18 16:18:22,871 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2023-02-18 16:18:22,871 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 17) the Hoare annotation is: true [2023-02-18 16:18:22,871 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2023-02-18 16:18:22,876 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-02-18 16:18:22,878 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-18 16:18:22,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 04:18:22 BoogieIcfgContainer [2023-02-18 16:18:22,905 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-18 16:18:22,906 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 16:18:22,908 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 16:18:22,909 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 16:18:22,909 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:18:14" (3/4) ... [2023-02-18 16:18:22,912 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-18 16:18:22,917 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-02-18 16:18:22,917 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-18 16:18:22,921 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-02-18 16:18:22,922 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-18 16:18:22,922 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-18 16:18:22,922 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-18 16:18:22,957 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-18 16:18:22,957 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 16:18:22,958 INFO L158 Benchmark]: Toolchain (without parser) took 9259.01ms. Allocated memory was 111.1MB in the beginning and 153.1MB in the end (delta: 41.9MB). Free memory was 68.4MB in the beginning and 76.5MB in the end (delta: -8.1MB). Peak memory consumption was 35.0MB. Max. memory is 16.1GB. [2023-02-18 16:18:22,958 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 111.1MB. Free memory was 80.3MB in the beginning and 80.1MB in the end (delta: 134.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 16:18:22,959 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.76ms. Allocated memory is still 111.1MB. Free memory was 68.4MB in the beginning and 57.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 16:18:22,959 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.91ms. Allocated memory is still 111.1MB. Free memory was 57.8MB in the beginning and 56.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 16:18:22,959 INFO L158 Benchmark]: Boogie Preprocessor took 37.63ms. Allocated memory is still 111.1MB. Free memory was 56.1MB in the beginning and 55.1MB in the end (delta: 982.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 16:18:22,960 INFO L158 Benchmark]: RCFGBuilder took 313.92ms. Allocated memory is still 111.1MB. Free memory was 55.1MB in the beginning and 80.0MB in the end (delta: -24.9MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2023-02-18 16:18:22,960 INFO L158 Benchmark]: TraceAbstraction took 8524.85ms. Allocated memory was 111.1MB in the beginning and 153.1MB in the end (delta: 41.9MB). Free memory was 79.1MB in the beginning and 79.2MB in the end (delta: -141.7kB). Peak memory consumption was 41.2MB. Max. memory is 16.1GB. [2023-02-18 16:18:22,960 INFO L158 Benchmark]: Witness Printer took 51.82ms. Allocated memory is still 153.1MB. Free memory was 79.2MB in the beginning and 76.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 16:18:22,962 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 111.1MB. Free memory was 80.3MB in the beginning and 80.1MB in the end (delta: 134.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 283.76ms. Allocated memory is still 111.1MB. Free memory was 68.4MB in the beginning and 57.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.91ms. Allocated memory is still 111.1MB. Free memory was 57.8MB in the beginning and 56.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.63ms. Allocated memory is still 111.1MB. Free memory was 56.1MB in the beginning and 55.1MB in the end (delta: 982.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 313.92ms. Allocated memory is still 111.1MB. Free memory was 55.1MB in the beginning and 80.0MB in the end (delta: -24.9MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8524.85ms. Allocated memory was 111.1MB in the beginning and 153.1MB in the end (delta: 41.9MB). Free memory was 79.1MB in the beginning and 79.2MB in the end (delta: -141.7kB). Peak memory consumption was 41.2MB. Max. memory is 16.1GB. * Witness Printer took 51.82ms. Allocated memory is still 153.1MB. Free memory was 79.2MB in the beginning and 76.5MB in the end (delta: 2.8MB). 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, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.4s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 38 SdHoareTripleChecker+Valid, 6.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 33 mSDsluCounter, 195 SdHoareTripleChecker+Invalid, 6.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 118 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 125 IncrementalHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 77 mSDtfsCounter, 125 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 24 PreInvPairs, 39 NumberOfFragments, 508 HoareAnnotationTreeSize, 24 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 272 SizeOfPredicates, 11 NumberOfNonLiveVariables, 200 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 18/20 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: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: 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: 33]: 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: 38]: 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) RESULT: Ultimate proved your program to be correct! [2023-02-18 16:18:22,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE