./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/freire2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/freire2.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 9d48d3286a6f586125e0a7b49e6e6eb72f0f43db8d452bf9a67ba40cbad4d2bf --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 03:01:14,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 03:01:14,072 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 03:01:14,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 03:01:14,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 03:01:14,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 03:01:14,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 03:01:14,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 03:01:14,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 03:01:14,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 03:01:14,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 03:01:14,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 03:01:14,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 03:01:14,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 03:01:14,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 03:01:14,148 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 03:01:14,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 03:01:14,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 03:01:14,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 03:01:14,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 03:01:14,158 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 03:01:14,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 03:01:14,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 03:01:14,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 03:01:14,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 03:01:14,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 03:01:14,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 03:01:14,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 03:01:14,171 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 03:01:14,171 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 03:01:14,172 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 03:01:14,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 03:01:14,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 03:01:14,175 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 03:01:14,176 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 03:01:14,177 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 03:01:14,177 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 03:01:14,178 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 03:01:14,178 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 03:01:14,178 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 03:01:14,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 03:01:14,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 03:01:14,186 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 03:01:14,218 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 03:01:14,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 03:01:14,219 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 03:01:14,219 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 03:01:14,220 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 03:01:14,220 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 03:01:14,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 03:01:14,221 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 03:01:14,221 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 03:01:14,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 03:01:14,222 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 03:01:14,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 03:01:14,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 03:01:14,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 03:01:14,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 03:01:14,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 03:01:14,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 03:01:14,224 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 03:01:14,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 03:01:14,224 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 03:01:14,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 03:01:14,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 03:01:14,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 03:01:14,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 03:01:14,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 03:01:14,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 03:01:14,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 03:01:14,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 03:01:14,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 03:01:14,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 03:01:14,227 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 03:01:14,227 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 03:01:14,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 03:01:14,227 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d48d3286a6f586125e0a7b49e6e6eb72f0f43db8d452bf9a67ba40cbad4d2bf [2022-07-21 03:01:14,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 03:01:14,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 03:01:14,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 03:01:14,572 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 03:01:14,575 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 03:01:14,576 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire2.c [2022-07-21 03:01:14,642 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6c7ef41b/bf96b957c0b24555bbb3648684aeff87/FLAG02b72a2e7 [2022-07-21 03:01:15,104 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 03:01:15,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c [2022-07-21 03:01:15,112 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6c7ef41b/bf96b957c0b24555bbb3648684aeff87/FLAG02b72a2e7 [2022-07-21 03:01:15,133 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6c7ef41b/bf96b957c0b24555bbb3648684aeff87 [2022-07-21 03:01:15,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 03:01:15,137 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 03:01:15,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 03:01:15,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 03:01:15,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 03:01:15,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:01:15" (1/1) ... [2022-07-21 03:01:15,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b592cb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:01:15, skipping insertion in model container [2022-07-21 03:01:15,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:01:15" (1/1) ... [2022-07-21 03:01:15,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 03:01:15,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 03:01:15,278 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c[709,722] [2022-07-21 03:01:15,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 03:01:15,303 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 03:01:15,340 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c[709,722] [2022-07-21 03:01:15,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 03:01:15,369 INFO L208 MainTranslator]: Completed translation [2022-07-21 03:01:15,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:01:15 WrapperNode [2022-07-21 03:01:15,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 03:01:15,377 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 03:01:15,377 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 03:01:15,378 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 03:01:15,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:01:15" (1/1) ... [2022-07-21 03:01:15,400 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:01:15" (1/1) ... [2022-07-21 03:01:15,422 INFO L137 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2022-07-21 03:01:15,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 03:01:15,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 03:01:15,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 03:01:15,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 03:01:15,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:01:15" (1/1) ... [2022-07-21 03:01:15,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:01:15" (1/1) ... [2022-07-21 03:01:15,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:01:15" (1/1) ... [2022-07-21 03:01:15,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:01:15" (1/1) ... [2022-07-21 03:01:15,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:01:15" (1/1) ... [2022-07-21 03:01:15,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:01:15" (1/1) ... [2022-07-21 03:01:15,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:01:15" (1/1) ... [2022-07-21 03:01:15,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 03:01:15,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 03:01:15,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 03:01:15,465 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 03:01:15,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:01:15" (1/1) ... [2022-07-21 03:01:15,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 03:01:15,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:01:15,501 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 03:01:15,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 03:01:15,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 03:01:15,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 03:01:15,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 03:01:15,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 03:01:15,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 03:01:15,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 03:01:15,602 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 03:01:15,603 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 03:01:15,747 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 03:01:15,754 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 03:01:15,755 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 03:01:15,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:01:15 BoogieIcfgContainer [2022-07-21 03:01:15,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 03:01:15,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 03:01:15,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 03:01:15,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 03:01:15,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 03:01:15" (1/3) ... [2022-07-21 03:01:15,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ab285e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:01:15, skipping insertion in model container [2022-07-21 03:01:15,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:01:15" (2/3) ... [2022-07-21 03:01:15,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ab285e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:01:15, skipping insertion in model container [2022-07-21 03:01:15,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:01:15" (3/3) ... [2022-07-21 03:01:15,766 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2.c [2022-07-21 03:01:15,779 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 03:01:15,779 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 03:01:15,839 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 03:01:15,848 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7d71522d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@8845851 [2022-07-21 03:01:15,849 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 03:01:15,855 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-21 03:01:15,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-21 03:01:15,868 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:01:15,869 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:01:15,870 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:01:15,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:01:15,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1820892643, now seen corresponding path program 1 times [2022-07-21 03:01:15,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:01:15,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409667068] [2022-07-21 03:01:15,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:01:15,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:01:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:01:16,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 03:01:16,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:01:16,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409667068] [2022-07-21 03:01:16,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409667068] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 03:01:16,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 03:01:16,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 03:01:16,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87320391] [2022-07-21 03:01:16,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:01:16,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 03:01:16,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:01:16,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 03:01:16,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 03:01:16,054 INFO L87 Difference]: Start difference. First operand has 20 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 03:01:16,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:01:16,073 INFO L93 Difference]: Finished difference Result 38 states and 60 transitions. [2022-07-21 03:01:16,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 03:01:16,076 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-21 03:01:16,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:01:16,087 INFO L225 Difference]: With dead ends: 38 [2022-07-21 03:01:16,087 INFO L226 Difference]: Without dead ends: 16 [2022-07-21 03:01:16,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 03:01:16,097 INFO L413 NwaCegarLoop]: 25 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, 25 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 03:01:16,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 03:01:16,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-07-21 03:01:16,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-07-21 03:01:16,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-21 03:01:16,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2022-07-21 03:01:16,134 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 7 [2022-07-21 03:01:16,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:01:16,135 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions. [2022-07-21 03:01:16,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 03:01:16,136 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2022-07-21 03:01:16,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-21 03:01:16,137 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:01:16,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:01:16,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 03:01:16,138 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:01:16,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:01:16,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1811478687, now seen corresponding path program 1 times [2022-07-21 03:01:16,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:01:16,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897632879] [2022-07-21 03:01:16,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:01:16,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:01:16,159 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:01:16,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [953696383] [2022-07-21 03:01:16,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:01:16,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:01:16,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:01:16,167 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 03:01:16,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 03:01:16,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 03:01:16,253 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 03:01:16,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 03:01:16,272 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 03:01:16,273 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 03:01:16,274 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 03:01:16,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 03:01:16,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:01:16,500 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-21 03:01:16,503 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 03:01:16,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 03:01:16 BoogieIcfgContainer [2022-07-21 03:01:16,520 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 03:01:16,521 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 03:01:16,521 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 03:01:16,521 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 03:01:16,521 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:01:15" (3/4) ... [2022-07-21 03:01:16,524 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-21 03:01:16,524 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 03:01:16,525 INFO L158 Benchmark]: Toolchain (without parser) took 1387.15ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 31.4MB in the beginning and 38.4MB in the end (delta: -7.0MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. [2022-07-21 03:01:16,525 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 54.5MB. Free memory was 35.7MB in the beginning and 35.7MB in the end (delta: 45.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 03:01:16,526 INFO L158 Benchmark]: CACSL2BoogieTranslator took 234.93ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 31.2MB in the beginning and 54.4MB in the end (delta: -23.2MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2022-07-21 03:01:16,526 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.54ms. Allocated memory is still 71.3MB. Free memory was 54.4MB in the beginning and 52.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 03:01:16,527 INFO L158 Benchmark]: Boogie Preprocessor took 40.50ms. Allocated memory is still 71.3MB. Free memory was 52.8MB in the beginning and 51.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 03:01:16,527 INFO L158 Benchmark]: RCFGBuilder took 293.06ms. Allocated memory is still 71.3MB. Free memory was 51.6MB in the beginning and 42.4MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-21 03:01:16,527 INFO L158 Benchmark]: TraceAbstraction took 760.44ms. Allocated memory is still 71.3MB. Free memory was 41.9MB in the beginning and 38.7MB in the end (delta: 3.2MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2022-07-21 03:01:16,528 INFO L158 Benchmark]: Witness Printer took 3.38ms. Allocated memory is still 71.3MB. Free memory was 38.7MB in the beginning and 38.4MB in the end (delta: 309.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 03:01:16,530 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 54.5MB. Free memory was 35.7MB in the beginning and 35.7MB in the end (delta: 45.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 234.93ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 31.2MB in the beginning and 54.4MB in the end (delta: -23.2MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.54ms. Allocated memory is still 71.3MB. Free memory was 54.4MB in the beginning and 52.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.50ms. Allocated memory is still 71.3MB. Free memory was 52.8MB in the beginning and 51.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 293.06ms. Allocated memory is still 71.3MB. Free memory was 51.6MB in the beginning and 42.4MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 760.44ms. Allocated memory is still 71.3MB. Free memory was 41.9MB in the beginning and 38.7MB in the end (delta: 3.2MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. * Witness Printer took 3.38ms. Allocated memory is still 71.3MB. Free memory was 38.7MB in the beginning and 38.4MB in the end (delta: 309.0kB). There was no memory consumed. 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 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 33. Possible FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L28] x = a [L29] s = 3.25 [L30] r = 1 VAL [a=2, r=1, s=13/4, x=2] [L32] COND TRUE 1 VAL [a=2, r=1, s=13/4, x=2] [L33] CALL __VERIFIER_assert((int)(4*s) - 12*r*r == 1) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L19] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 25 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-21 03:01:16,565 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/freire2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 9d48d3286a6f586125e0a7b49e6e6eb72f0f43db8d452bf9a67ba40cbad4d2bf --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 03:01:18,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 03:01:18,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 03:01:18,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 03:01:18,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 03:01:18,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 03:01:18,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 03:01:18,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 03:01:18,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 03:01:18,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 03:01:18,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 03:01:18,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 03:01:18,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 03:01:18,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 03:01:18,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 03:01:18,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 03:01:18,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 03:01:18,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 03:01:18,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 03:01:18,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 03:01:18,595 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 03:01:18,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 03:01:18,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 03:01:18,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 03:01:18,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 03:01:18,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 03:01:18,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 03:01:18,608 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 03:01:18,609 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 03:01:18,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 03:01:18,610 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 03:01:18,611 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 03:01:18,612 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 03:01:18,613 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 03:01:18,614 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 03:01:18,615 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 03:01:18,615 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 03:01:18,616 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 03:01:18,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 03:01:18,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 03:01:18,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 03:01:18,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 03:01:18,626 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-21 03:01:18,660 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 03:01:18,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 03:01:18,661 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 03:01:18,661 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 03:01:18,662 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 03:01:18,662 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 03:01:18,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 03:01:18,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 03:01:18,663 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 03:01:18,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 03:01:18,664 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 03:01:18,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 03:01:18,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 03:01:18,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 03:01:18,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 03:01:18,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 03:01:18,666 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 03:01:18,666 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 03:01:18,666 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 03:01:18,666 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 03:01:18,666 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 03:01:18,667 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 03:01:18,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 03:01:18,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 03:01:18,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 03:01:18,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 03:01:18,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 03:01:18,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 03:01:18,668 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 03:01:18,668 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 03:01:18,669 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 03:01:18,669 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 03:01:18,669 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 03:01:18,669 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 03:01:18,670 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 03:01:18,670 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 03:01:18,670 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d48d3286a6f586125e0a7b49e6e6eb72f0f43db8d452bf9a67ba40cbad4d2bf [2022-07-21 03:01:19,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 03:01:19,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 03:01:19,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 03:01:19,051 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 03:01:19,051 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 03:01:19,053 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire2.c [2022-07-21 03:01:19,102 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94e8a2e03/aa01d67d63d948aba8475e2c1d43523f/FLAG44cb2161f [2022-07-21 03:01:19,523 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 03:01:19,524 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c [2022-07-21 03:01:19,533 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94e8a2e03/aa01d67d63d948aba8475e2c1d43523f/FLAG44cb2161f [2022-07-21 03:01:19,946 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94e8a2e03/aa01d67d63d948aba8475e2c1d43523f [2022-07-21 03:01:19,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 03:01:19,949 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 03:01:19,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 03:01:19,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 03:01:19,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 03:01:19,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:01:19" (1/1) ... [2022-07-21 03:01:19,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26342444 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:01:19, skipping insertion in model container [2022-07-21 03:01:19,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:01:19" (1/1) ... [2022-07-21 03:01:19,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 03:01:19,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 03:01:20,137 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c[709,722] [2022-07-21 03:01:20,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 03:01:20,212 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 03:01:20,223 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c[709,722] [2022-07-21 03:01:20,245 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 03:01:20,261 INFO L208 MainTranslator]: Completed translation [2022-07-21 03:01:20,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:01:20 WrapperNode [2022-07-21 03:01:20,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 03:01:20,263 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 03:01:20,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 03:01:20,264 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 03:01:20,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:01:20" (1/1) ... [2022-07-21 03:01:20,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:01:20" (1/1) ... [2022-07-21 03:01:20,291 INFO L137 Inliner]: procedures = 15, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2022-07-21 03:01:20,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 03:01:20,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 03:01:20,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 03:01:20,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 03:01:20,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:01:20" (1/1) ... [2022-07-21 03:01:20,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:01:20" (1/1) ... [2022-07-21 03:01:20,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:01:20" (1/1) ... [2022-07-21 03:01:20,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:01:20" (1/1) ... [2022-07-21 03:01:20,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:01:20" (1/1) ... [2022-07-21 03:01:20,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:01:20" (1/1) ... [2022-07-21 03:01:20,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:01:20" (1/1) ... [2022-07-21 03:01:20,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 03:01:20,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 03:01:20,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 03:01:20,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 03:01:20,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:01:20" (1/1) ... [2022-07-21 03:01:20,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 03:01:20,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:01:20,365 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 03:01:20,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 03:01:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 03:01:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 03:01:20,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 03:01:20,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 03:01:20,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 03:01:20,405 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 03:01:20,474 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 03:01:20,476 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 03:01:22,809 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 03:01:22,820 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 03:01:22,820 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 03:01:22,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:01:22 BoogieIcfgContainer [2022-07-21 03:01:22,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 03:01:22,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 03:01:22,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 03:01:22,825 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 03:01:22,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 03:01:19" (1/3) ... [2022-07-21 03:01:22,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45fb4116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:01:22, skipping insertion in model container [2022-07-21 03:01:22,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:01:20" (2/3) ... [2022-07-21 03:01:22,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45fb4116 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:01:22, skipping insertion in model container [2022-07-21 03:01:22,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:01:22" (3/3) ... [2022-07-21 03:01:22,828 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2.c [2022-07-21 03:01:22,839 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 03:01:22,839 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 03:01:22,885 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 03:01:22,890 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2c57b9db, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@21cfb7eb [2022-07-21 03:01:22,895 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 03:01:22,900 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-21 03:01:22,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-21 03:01:22,911 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:01:22,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:01:22,912 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:01:22,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:01:22,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1820892643, now seen corresponding path program 1 times [2022-07-21 03:01:22,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 03:01:22,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787296427] [2022-07-21 03:01:22,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:01:22,924 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 03:01:22,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 03:01:22,925 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 03:01:22,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 03:01:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:01:23,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 03:01:23,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:01:23,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 03:01:23,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 03:01:23,138 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 03:01:23,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787296427] [2022-07-21 03:01:23,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787296427] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 03:01:23,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 03:01:23,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 03:01:23,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092919280] [2022-07-21 03:01:23,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:01:23,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 03:01:23,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 03:01:23,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 03:01:23,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 03:01:23,166 INFO L87 Difference]: Start difference. First operand has 20 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 03:01:23,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:01:23,181 INFO L93 Difference]: Finished difference Result 38 states and 60 transitions. [2022-07-21 03:01:23,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 03:01:23,182 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-21 03:01:23,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:01:23,186 INFO L225 Difference]: With dead ends: 38 [2022-07-21 03:01:23,187 INFO L226 Difference]: Without dead ends: 16 [2022-07-21 03:01:23,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 03:01:23,192 INFO L413 NwaCegarLoop]: 25 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, 25 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 03:01:23,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 03:01:23,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-07-21 03:01:23,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-07-21 03:01:23,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-21 03:01:23,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2022-07-21 03:01:23,216 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 7 [2022-07-21 03:01:23,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:01:23,216 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions. [2022-07-21 03:01:23,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 03:01:23,216 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2022-07-21 03:01:23,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-21 03:01:23,217 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:01:23,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:01:23,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-21 03:01:23,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 03:01:23,418 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:01:23,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:01:23,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1811478687, now seen corresponding path program 1 times [2022-07-21 03:01:23,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 03:01:23,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1512180674] [2022-07-21 03:01:23,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:01:23,420 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 03:01:23,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 03:01:23,422 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 03:01:23,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-21 03:01:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:01:23,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 03:01:23,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:01:23,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 03:01:23,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 03:01:23,695 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 03:01:23,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1512180674] [2022-07-21 03:01:23,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1512180674] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 03:01:23,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 03:01:23,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 03:01:23,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296051574] [2022-07-21 03:01:23,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:01:23,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 03:01:23,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 03:01:23,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 03:01:23,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 03:01:23,698 INFO L87 Difference]: Start difference. First operand 16 states and 21 transitions. Second operand has 6 states, 6 states have (on average 1.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 03:01:26,319 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 03:01:27,746 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 03:01:29,923 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 03:01:32,326 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 03:01:34,333 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 03:01:36,461 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 03:01:40,034 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 03:01:42,040 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 03:01:44,153 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 03:01:46,449 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 03:01:48,462 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 03:01:48,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:01:48,463 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2022-07-21 03:01:48,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 03:01:48,589 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-21 03:01:48,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:01:48,591 INFO L225 Difference]: With dead ends: 31 [2022-07-21 03:01:48,591 INFO L226 Difference]: Without dead ends: 29 [2022-07-21 03:01:48,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-21 03:01:48,592 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 15 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.7s IncrementalHoareTripleChecker+Time [2022-07-21 03:01:48,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 69 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 9 Unknown, 0 Unchecked, 24.7s Time] [2022-07-21 03:01:48,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-07-21 03:01:48,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2022-07-21 03:01:48,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-21 03:01:48,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2022-07-21 03:01:48,604 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 7 [2022-07-21 03:01:48,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:01:48,605 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2022-07-21 03:01:48,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 03:01:48,605 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2022-07-21 03:01:48,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-21 03:01:48,605 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:01:48,605 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:01:48,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-21 03:01:48,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 03:01:48,806 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:01:48,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:01:48,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1549807104, now seen corresponding path program 1 times [2022-07-21 03:01:48,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 03:01:48,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129854457] [2022-07-21 03:01:48,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:01:48,808 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 03:01:48,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 03:01:48,809 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 03:01:48,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-21 03:01:49,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:01:49,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 03:01:49,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:01:51,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 03:01:51,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 03:01:57,912 WARN L833 $PredicateComparison]: unable to prove that (= (bvadd (bvneg (bvmul |c_ULTIMATE.start_main_~r~0#1| (bvmul (_ bv6 32) |c_ULTIMATE.start_main_~r~0#1|))) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~x~0#1|) (fp.mul c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~a~0#1|)))) (bvmul (bvmul |c_ULTIMATE.start_main_~r~0#1| (bvmul (_ bv4 32) |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~r~0#1|) (bvmul (_ bv3 32) |c_ULTIMATE.start_main_~r~0#1|)) (_ bv1 32)) is different from false [2022-07-21 03:01:59,957 WARN L855 $PredicateComparison]: unable to prove that (= (bvadd (bvneg (bvmul |c_ULTIMATE.start_main_~r~0#1| (bvmul (_ bv6 32) |c_ULTIMATE.start_main_~r~0#1|))) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~x~0#1|) (fp.mul c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~a~0#1|)))) (bvmul (bvmul |c_ULTIMATE.start_main_~r~0#1| (bvmul (_ bv4 32) |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~r~0#1|) (bvmul (_ bv3 32) |c_ULTIMATE.start_main_~r~0#1|)) (_ bv1 32)) is different from true [2022-07-21 03:02:20,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 03:02:20,836 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 03:02:20,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129854457] [2022-07-21 03:02:20,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129854457] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 03:02:20,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 03:02:20,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2022-07-21 03:02:20,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226965715] [2022-07-21 03:02:20,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:02:20,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 03:02:20,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 03:02:20,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 03:02:20,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=56, Unknown=2, NotChecked=14, Total=90 [2022-07-21 03:02:20,843 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 03:02:23,830 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 03:02:26,867 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 03:02:29,182 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 03:02:29,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:02:29,183 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2022-07-21 03:02:29,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 03:02:29,308 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-07-21 03:02:29,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:02:29,309 INFO L225 Difference]: With dead ends: 29 [2022-07-21 03:02:29,309 INFO L226 Difference]: Without dead ends: 27 [2022-07-21 03:02:29,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=22, Invalid=70, Unknown=2, NotChecked=16, Total=110 [2022-07-21 03:02:29,310 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-07-21 03:02:29,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 58 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 3 Unknown, 30 Unchecked, 7.7s Time] [2022-07-21 03:02:29,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-07-21 03:02:29,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-07-21 03:02:29,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 17 states have internal predecessors, (17), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-21 03:02:29,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2022-07-21 03:02:29,319 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 12 [2022-07-21 03:02:29,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:02:29,319 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2022-07-21 03:02:29,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 03:02:29,319 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-07-21 03:02:29,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-21 03:02:29,320 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:02:29,320 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:02:29,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-21 03:02:29,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 03:02:29,521 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:02:29,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:02:29,521 INFO L85 PathProgramCache]: Analyzing trace with hash 888915199, now seen corresponding path program 1 times [2022-07-21 03:02:29,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 03:02:29,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113954838] [2022-07-21 03:02:29,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:02:29,522 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 03:02:29,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 03:02:29,527 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 03:02:29,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-21 03:02:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 03:02:34,655 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 03:02:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 03:02:36,361 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-21 03:02:36,361 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 03:02:36,362 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 03:02:36,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-21 03:02:36,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 03:02:36,566 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-07-21 03:02:36,570 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 03:02:36,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 03:02:36 BoogieIcfgContainer [2022-07-21 03:02:36,597 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 03:02:36,598 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 03:02:36,598 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 03:02:36,598 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 03:02:36,598 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:01:22" (3/4) ... [2022-07-21 03:02:36,599 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-21 03:02:36,636 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 03:02:36,636 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 03:02:36,637 INFO L158 Benchmark]: Toolchain (without parser) took 76687.24ms. Allocated memory was 52.4MB in the beginning and 67.1MB in the end (delta: 14.7MB). Free memory was 29.6MB in the beginning and 36.8MB in the end (delta: -7.2MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2022-07-21 03:02:36,637 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 52.4MB. Free memory was 33.2MB in the beginning and 33.1MB in the end (delta: 33.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 03:02:36,637 INFO L158 Benchmark]: CACSL2BoogieTranslator took 311.05ms. Allocated memory was 52.4MB in the beginning and 67.1MB in the end (delta: 14.7MB). Free memory was 29.5MB in the beginning and 49.4MB in the end (delta: -19.9MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2022-07-21 03:02:36,638 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.25ms. Allocated memory is still 67.1MB. Free memory was 49.2MB in the beginning and 47.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 03:02:36,638 INFO L158 Benchmark]: Boogie Preprocessor took 40.32ms. Allocated memory is still 67.1MB. Free memory was 47.6MB in the beginning and 46.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 03:02:36,639 INFO L158 Benchmark]: RCFGBuilder took 2488.13ms. Allocated memory is still 67.1MB. Free memory was 46.2MB in the beginning and 36.4MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-21 03:02:36,639 INFO L158 Benchmark]: TraceAbstraction took 73774.43ms. Allocated memory is still 67.1MB. Free memory was 35.8MB in the beginning and 38.9MB in the end (delta: -3.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 03:02:36,640 INFO L158 Benchmark]: Witness Printer took 38.65ms. Allocated memory is still 67.1MB. Free memory was 38.9MB in the beginning and 36.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 03:02:36,642 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 52.4MB. Free memory was 33.2MB in the beginning and 33.1MB in the end (delta: 33.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 311.05ms. Allocated memory was 52.4MB in the beginning and 67.1MB in the end (delta: 14.7MB). Free memory was 29.5MB in the beginning and 49.4MB in the end (delta: -19.9MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.25ms. Allocated memory is still 67.1MB. Free memory was 49.2MB in the beginning and 47.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.32ms. Allocated memory is still 67.1MB. Free memory was 47.6MB in the beginning and 46.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2488.13ms. Allocated memory is still 67.1MB. Free memory was 46.2MB in the beginning and 36.4MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 73774.43ms. Allocated memory is still 67.1MB. Free memory was 35.8MB in the beginning and 38.9MB in the end (delta: -3.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 38.65ms. Allocated memory is still 67.1MB. Free memory was 38.9MB in the beginning and 36.8MB 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 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L28] x = a [L29] s = 3.25 [L30] r = 1 VAL [a=0.0000003970511275277969, r=1, s=3.25, x=0.0000003970511275277969] [L32] COND TRUE 1 VAL [a=0.0000003970511275277969, r=1, s=3.25, x=0.0000003970511275277969] [L33] CALL __VERIFIER_assert((int)(4*s) - 12*r*r == 1) VAL [\old(cond)=1] [L17] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L33] RET __VERIFIER_assert((int)(4*s) - 12*r*r == 1) VAL [a=0.0000003970511275277969, r=1, s=3.25, x=0.0000003970511275277969] [L34] CALL __VERIFIER_assert(((4*r*r*r - 6*r*r + 3*r) + (int)(4*x - 4*a)) == 1) VAL [\old(cond)=1] [L17] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L34] RET __VERIFIER_assert(((4*r*r*r - 6*r*r + 3*r) + (int)(4*x - 4*a)) == 1) VAL [a=0.0000003970511275277969, r=1, s=3.25, x=0.0000003970511275277969] [L35] CALL __VERIFIER_assert((int)(8*r*s - 24*a + 16*r - 12*s + 24*x - 3 == 0)) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L19] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 73.7s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 33.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 32.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 152 SdHoareTripleChecker+Invalid, 31.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 30 IncrementalHoareTripleChecker+Unchecked, 91 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32 IncrementalHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 61 mSDtfsCounter, 32 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 17.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=2, InterpolantAutomatonStates: 15, 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 5.9s SatisfiabilityAnalysisTime, 31.6s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 34 ConstructedInterpolants, 1 QuantifiedInterpolants, 239 SizeOfPredicates, 5 NumberOfNonLiveVariables, 82 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 2/4 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 RESULT: Ultimate proved your program to be incorrect! [2022-07-21 03:02:36,816 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE