./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound50.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-scaling/freire1_unwindbound50.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 38ccaeaf311fb01804239f58019ab7743a9fb69960e13f76d7c528e868915a3a --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 03:32:09,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 03:32:09,147 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 03:32:09,166 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 03:32:09,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 03:32:09,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 03:32:09,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 03:32:09,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 03:32:09,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 03:32:09,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 03:32:09,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 03:32:09,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 03:32:09,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 03:32:09,178 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 03:32:09,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 03:32:09,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 03:32:09,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 03:32:09,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 03:32:09,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 03:32:09,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 03:32:09,185 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 03:32:09,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 03:32:09,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 03:32:09,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 03:32:09,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 03:32:09,197 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 03:32:09,197 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 03:32:09,198 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 03:32:09,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 03:32:09,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 03:32:09,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 03:32:09,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 03:32:09,200 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 03:32:09,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 03:32:09,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 03:32:09,201 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 03:32:09,201 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 03:32:09,202 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 03:32:09,202 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 03:32:09,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 03:32:09,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 03:32:09,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 03:32:09,204 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 03:32:09,225 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 03:32:09,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 03:32:09,228 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 03:32:09,230 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 03:32:09,231 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 03:32:09,231 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 03:32:09,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 03:32:09,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 03:32:09,232 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 03:32:09,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 03:32:09,233 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 03:32:09,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 03:32:09,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 03:32:09,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 03:32:09,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 03:32:09,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 03:32:09,233 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 03:32:09,234 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 03:32:09,234 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 03:32:09,234 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 03:32:09,234 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 03:32:09,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 03:32:09,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 03:32:09,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 03:32:09,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 03:32:09,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 03:32:09,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 03:32:09,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 03:32:09,236 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 03:32:09,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 03:32:09,236 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 03:32:09,236 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 03:32:09,236 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 03:32:09,237 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38ccaeaf311fb01804239f58019ab7743a9fb69960e13f76d7c528e868915a3a [2022-07-21 03:32:09,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 03:32:09,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 03:32:09,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 03:32:09,467 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 03:32:09,467 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 03:32:09,469 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound50.c [2022-07-21 03:32:09,511 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/422faded1/4202639b3a984cb0b300f49c499187aa/FLAG2c2ffb275 [2022-07-21 03:32:09,815 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 03:32:09,816 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound50.c [2022-07-21 03:32:09,819 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/422faded1/4202639b3a984cb0b300f49c499187aa/FLAG2c2ffb275 [2022-07-21 03:32:10,252 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/422faded1/4202639b3a984cb0b300f49c499187aa [2022-07-21 03:32:10,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 03:32:10,255 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 03:32:10,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 03:32:10,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 03:32:10,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 03:32:10,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:32:10" (1/1) ... [2022-07-21 03:32:10,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@512e88e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:32:10, skipping insertion in model container [2022-07-21 03:32:10,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:32:10" (1/1) ... [2022-07-21 03:32:10,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 03:32:10,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 03:32:10,377 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-scaling/freire1_unwindbound50.c[712,725] [2022-07-21 03:32:10,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 03:32:10,394 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 03:32:10,407 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-scaling/freire1_unwindbound50.c[712,725] [2022-07-21 03:32:10,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 03:32:10,444 INFO L208 MainTranslator]: Completed translation [2022-07-21 03:32:10,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:32:10 WrapperNode [2022-07-21 03:32:10,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 03:32:10,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 03:32:10,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 03:32:10,447 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 03:32:10,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:32:10" (1/1) ... [2022-07-21 03:32:10,455 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:32:10" (1/1) ... [2022-07-21 03:32:10,466 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 34 [2022-07-21 03:32:10,466 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 03:32:10,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 03:32:10,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 03:32:10,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 03:32:10,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:32:10" (1/1) ... [2022-07-21 03:32:10,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:32:10" (1/1) ... [2022-07-21 03:32:10,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:32:10" (1/1) ... [2022-07-21 03:32:10,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:32:10" (1/1) ... [2022-07-21 03:32:10,491 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:32:10" (1/1) ... [2022-07-21 03:32:10,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:32:10" (1/1) ... [2022-07-21 03:32:10,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:32:10" (1/1) ... [2022-07-21 03:32:10,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 03:32:10,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 03:32:10,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 03:32:10,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 03:32:10,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:32:10" (1/1) ... [2022-07-21 03:32:10,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 03:32:10,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:32:10,523 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 03:32:10,529 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 03:32:10,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 03:32:10,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 03:32:10,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 03:32:10,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 03:32:10,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 03:32:10,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 03:32:10,611 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 03:32:10,612 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 03:32:10,719 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 03:32:10,723 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 03:32:10,723 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 03:32:10,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:32:10 BoogieIcfgContainer [2022-07-21 03:32:10,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 03:32:10,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 03:32:10,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 03:32:10,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 03:32:10,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 03:32:10" (1/3) ... [2022-07-21 03:32:10,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d7c088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:32:10, skipping insertion in model container [2022-07-21 03:32:10,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:32:10" (2/3) ... [2022-07-21 03:32:10,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d7c088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:32:10, skipping insertion in model container [2022-07-21 03:32:10,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:32:10" (3/3) ... [2022-07-21 03:32:10,733 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound50.c [2022-07-21 03:32:10,742 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 03:32:10,742 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 03:32:10,788 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 03:32:10,794 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@1d79b81b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@72ee0b26 [2022-07-21 03:32:10,795 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 03:32:10,798 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 03:32:10,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-21 03:32:10,803 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:32:10,804 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:32:10,804 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:32:10,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:32:10,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1819757606, now seen corresponding path program 1 times [2022-07-21 03:32:10,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:32:10,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978184815] [2022-07-21 03:32:10,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:32:10,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:32:10,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:32:10,916 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 03:32:10,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:32:10,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978184815] [2022-07-21 03:32:10,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978184815] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 03:32:10,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 03:32:10,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 03:32:10,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025433942] [2022-07-21 03:32:10,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:32:10,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 03:32:10,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:32:10,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 03:32:10,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 03:32:10,950 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) 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 03:32:10,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:32:10,962 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2022-07-21 03:32:10,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 03:32:10,965 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 03:32:10,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:32:10,972 INFO L225 Difference]: With dead ends: 32 [2022-07-21 03:32:10,973 INFO L226 Difference]: Without dead ends: 13 [2022-07-21 03:32:10,975 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 03:32:10,980 INFO L413 NwaCegarLoop]: 19 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, 19 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 03:32:10,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 03:32:10,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-07-21 03:32:11,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-07-21 03:32:11,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 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 03:32:11,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-07-21 03:32:11,003 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2022-07-21 03:32:11,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:32:11,004 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-07-21 03:32:11,004 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 03:32:11,004 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-07-21 03:32:11,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-21 03:32:11,005 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:32:11,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:32:11,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 03:32:11,006 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:32:11,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:32:11,007 INFO L85 PathProgramCache]: Analyzing trace with hash 178410715, now seen corresponding path program 1 times [2022-07-21 03:32:11,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:32:11,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387206328] [2022-07-21 03:32:11,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:32:11,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:32:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:32:11,101 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 03:32:11,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:32:11,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387206328] [2022-07-21 03:32:11,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387206328] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 03:32:11,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 03:32:11,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 03:32:11,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046797988] [2022-07-21 03:32:11,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:32:11,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 03:32:11,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:32:11,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 03:32:11,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 03:32:11,104 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 03:32:11,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:32:11,114 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-07-21 03:32:11,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 03:32:11,114 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 8 [2022-07-21 03:32:11,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:32:11,114 INFO L225 Difference]: With dead ends: 22 [2022-07-21 03:32:11,114 INFO L226 Difference]: Without dead ends: 15 [2022-07-21 03:32:11,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 03:32:11,116 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 03:32:11,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 03:32:11,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-07-21 03:32:11,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-07-21 03:32:11,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 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 03:32:11,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-07-21 03:32:11,119 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2022-07-21 03:32:11,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:32:11,119 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-07-21 03:32:11,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 03:32:11,119 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-07-21 03:32:11,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-21 03:32:11,119 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:32:11,119 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:32:11,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 03:32:11,120 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:32:11,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:32:11,120 INFO L85 PathProgramCache]: Analyzing trace with hash 180198175, now seen corresponding path program 1 times [2022-07-21 03:32:11,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:32:11,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489381883] [2022-07-21 03:32:11,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:32:11,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:32:11,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 03:32:11,163 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 03:32:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 03:32:11,179 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 03:32:11,179 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 03:32:11,180 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 03:32:11,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 03:32:11,183 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-21 03:32:11,185 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 03:32:11,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 03:32:11 BoogieIcfgContainer [2022-07-21 03:32:11,198 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 03:32:11,198 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 03:32:11,198 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 03:32:11,198 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 03:32:11,199 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:32:10" (3/4) ... [2022-07-21 03:32:11,200 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-21 03:32:11,200 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 03:32:11,201 INFO L158 Benchmark]: Toolchain (without parser) took 945.66ms. Allocated memory is still 71.3MB. Free memory was 54.2MB in the beginning and 36.4MB in the end (delta: 17.9MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. [2022-07-21 03:32:11,201 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 71.3MB. Free memory was 52.6MB in the beginning and 52.6MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 03:32:11,202 INFO L158 Benchmark]: CACSL2BoogieTranslator took 187.52ms. Allocated memory is still 71.3MB. Free memory was 54.0MB in the beginning and 55.0MB in the end (delta: -1.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-21 03:32:11,202 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.83ms. Allocated memory is still 71.3MB. Free memory was 55.0MB in the beginning and 53.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 03:32:11,203 INFO L158 Benchmark]: Boogie Preprocessor took 33.52ms. Allocated memory is still 71.3MB. Free memory was 53.5MB in the beginning and 52.5MB in the end (delta: 983.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 03:32:11,203 INFO L158 Benchmark]: RCFGBuilder took 223.42ms. Allocated memory is still 71.3MB. Free memory was 52.5MB in the beginning and 43.9MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-21 03:32:11,203 INFO L158 Benchmark]: TraceAbstraction took 472.31ms. Allocated memory is still 71.3MB. Free memory was 43.2MB in the beginning and 36.7MB in the end (delta: 6.4MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2022-07-21 03:32:11,204 INFO L158 Benchmark]: Witness Printer took 2.54ms. Allocated memory is still 71.3MB. Free memory was 36.7MB in the beginning and 36.4MB in the end (delta: 341.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 03:32:11,206 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 71.3MB. Free memory was 52.6MB in the beginning and 52.6MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 187.52ms. Allocated memory is still 71.3MB. Free memory was 54.0MB in the beginning and 55.0MB in the end (delta: -1.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.83ms. Allocated memory is still 71.3MB. Free memory was 55.0MB in the beginning and 53.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.52ms. Allocated memory is still 71.3MB. Free memory was 53.5MB in the beginning and 52.5MB in the end (delta: 983.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 223.42ms. Allocated memory is still 71.3MB. Free memory was 52.5MB in the beginning and 43.9MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 472.31ms. Allocated memory is still 71.3MB. Free memory was 43.2MB in the beginning and 36.7MB in the end (delta: 6.4MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * Witness Printer took 2.54ms. Allocated memory is still 71.3MB. Free memory was 36.7MB in the beginning and 36.4MB in the end (delta: 341.2kB). 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, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [counter=0, r=0] [L32] EXPR counter++ VAL [counter=1, counter++=0, r=0] [L32] COND TRUE counter++<50 [L33] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) VAL [\old(cond)=0, counter=1] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=1] [L19] reach_error() VAL [\old(cond)=0, cond=0, counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 3, 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, 54 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8 IncrementalHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 32 mSDtfsCounter, 8 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 03:32:11,247 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-scaling/freire1_unwindbound50.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 38ccaeaf311fb01804239f58019ab7743a9fb69960e13f76d7c528e868915a3a --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 03:32:12,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 03:32:12,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 03:32:12,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 03:32:12,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 03:32:12,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 03:32:12,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 03:32:12,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 03:32:12,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 03:32:12,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 03:32:12,765 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 03:32:12,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 03:32:12,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 03:32:12,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 03:32:12,769 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 03:32:12,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 03:32:12,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 03:32:12,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 03:32:12,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 03:32:12,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 03:32:12,781 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 03:32:12,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 03:32:12,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 03:32:12,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 03:32:12,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 03:32:12,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 03:32:12,790 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 03:32:12,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 03:32:12,791 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 03:32:12,791 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 03:32:12,792 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 03:32:12,792 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 03:32:12,793 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 03:32:12,794 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 03:32:12,795 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 03:32:12,796 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 03:32:12,796 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 03:32:12,796 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 03:32:12,797 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 03:32:12,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 03:32:12,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 03:32:12,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 03:32:12,804 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-21 03:32:12,828 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 03:32:12,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 03:32:12,829 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 03:32:12,829 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 03:32:12,830 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 03:32:12,830 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 03:32:12,830 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 03:32:12,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 03:32:12,831 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 03:32:12,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 03:32:12,831 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 03:32:12,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 03:32:12,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 03:32:12,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 03:32:12,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 03:32:12,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 03:32:12,832 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 03:32:12,833 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 03:32:12,833 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 03:32:12,833 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 03:32:12,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 03:32:12,833 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 03:32:12,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 03:32:12,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 03:32:12,834 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 03:32:12,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 03:32:12,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 03:32:12,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 03:32:12,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 03:32:12,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 03:32:12,835 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 03:32:12,835 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 03:32:12,835 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 03:32:12,835 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 03:32:12,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 03:32:12,836 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 03:32:12,836 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38ccaeaf311fb01804239f58019ab7743a9fb69960e13f76d7c528e868915a3a [2022-07-21 03:32:13,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 03:32:13,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 03:32:13,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 03:32:13,137 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 03:32:13,137 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 03:32:13,138 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound50.c [2022-07-21 03:32:13,192 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f7b519d7/cdc43a5517f249299602f8642150e351/FLAG1040942e6 [2022-07-21 03:32:13,537 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 03:32:13,538 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound50.c [2022-07-21 03:32:13,542 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f7b519d7/cdc43a5517f249299602f8642150e351/FLAG1040942e6 [2022-07-21 03:32:13,964 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f7b519d7/cdc43a5517f249299602f8642150e351 [2022-07-21 03:32:13,966 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 03:32:13,967 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 03:32:13,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 03:32:13,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 03:32:13,981 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 03:32:13,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:32:13" (1/1) ... [2022-07-21 03:32:13,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dd5f6df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:32:13, skipping insertion in model container [2022-07-21 03:32:13,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:32:13" (1/1) ... [2022-07-21 03:32:13,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 03:32:13,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 03:32:14,075 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-scaling/freire1_unwindbound50.c[712,725] [2022-07-21 03:32:14,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 03:32:14,090 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 03:32:14,105 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-scaling/freire1_unwindbound50.c[712,725] [2022-07-21 03:32:14,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 03:32:14,134 INFO L208 MainTranslator]: Completed translation [2022-07-21 03:32:14,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:32:14 WrapperNode [2022-07-21 03:32:14,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 03:32:14,135 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 03:32:14,136 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 03:32:14,136 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 03:32:14,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:32:14" (1/1) ... [2022-07-21 03:32:14,151 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:32:14" (1/1) ... [2022-07-21 03:32:14,162 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 35 [2022-07-21 03:32:14,164 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 03:32:14,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 03:32:14,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 03:32:14,165 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 03:32:14,170 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:32:14" (1/1) ... [2022-07-21 03:32:14,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:32:14" (1/1) ... [2022-07-21 03:32:14,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:32:14" (1/1) ... [2022-07-21 03:32:14,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:32:14" (1/1) ... [2022-07-21 03:32:14,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:32:14" (1/1) ... [2022-07-21 03:32:14,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:32:14" (1/1) ... [2022-07-21 03:32:14,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:32:14" (1/1) ... [2022-07-21 03:32:14,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 03:32:14,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 03:32:14,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 03:32:14,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 03:32:14,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:32:14" (1/1) ... [2022-07-21 03:32:14,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 03:32:14,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:32:14,257 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 03:32:14,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 03:32:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 03:32:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 03:32:14,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 03:32:14,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 03:32:14,285 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 03:32:14,279 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 03:32:14,335 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 03:32:14,336 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 03:32:15,100 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 03:32:15,104 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 03:32:15,104 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 03:32:15,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:32:15 BoogieIcfgContainer [2022-07-21 03:32:15,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 03:32:15,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 03:32:15,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 03:32:15,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 03:32:15,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 03:32:13" (1/3) ... [2022-07-21 03:32:15,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74101866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:32:15, skipping insertion in model container [2022-07-21 03:32:15,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:32:14" (2/3) ... [2022-07-21 03:32:15,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74101866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:32:15, skipping insertion in model container [2022-07-21 03:32:15,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:32:15" (3/3) ... [2022-07-21 03:32:15,111 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound50.c [2022-07-21 03:32:15,120 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 03:32:15,120 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 03:32:15,157 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 03:32:15,161 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@76902871, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@591c1f4 [2022-07-21 03:32:15,161 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 03:32:15,164 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 03:32:15,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-21 03:32:15,169 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:32:15,169 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:32:15,170 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:32:15,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:32:15,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1819757606, now seen corresponding path program 1 times [2022-07-21 03:32:15,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 03:32:15,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985867621] [2022-07-21 03:32:15,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:32:15,182 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 03:32:15,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 03:32:15,184 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 03:32:15,185 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 03:32:15,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:32:15,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 03:32:15,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:32:15,484 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 03:32:15,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 03:32:15,485 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 03:32:15,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985867621] [2022-07-21 03:32:15,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [985867621] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 03:32:15,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 03:32:15,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 03:32:15,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453193403] [2022-07-21 03:32:15,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:32:15,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 03:32:15,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 03:32:15,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 03:32:15,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 03:32:15,508 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) 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 03:32:15,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:32:15,518 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2022-07-21 03:32:15,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 03:32:15,521 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 03:32:15,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:32:15,528 INFO L225 Difference]: With dead ends: 32 [2022-07-21 03:32:15,528 INFO L226 Difference]: Without dead ends: 13 [2022-07-21 03:32:15,531 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 03:32:15,534 INFO L413 NwaCegarLoop]: 19 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, 19 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 03:32:15,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 03:32:15,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-07-21 03:32:15,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-07-21 03:32:15,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 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 03:32:15,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-07-21 03:32:15,557 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2022-07-21 03:32:15,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:32:15,557 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-07-21 03:32:15,558 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 03:32:15,558 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-07-21 03:32:15,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-21 03:32:15,558 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:32:15,558 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:32:15,574 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 03:32:15,759 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 03:32:15,762 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:32:15,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:32:15,762 INFO L85 PathProgramCache]: Analyzing trace with hash 178410715, now seen corresponding path program 1 times [2022-07-21 03:32:15,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 03:32:15,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971831422] [2022-07-21 03:32:15,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:32:15,763 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 03:32:15,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 03:32:15,764 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 03:32:15,765 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 03:32:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:32:16,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 03:32:16,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:32:16,101 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 03:32:16,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 03:32:16,101 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 03:32:16,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971831422] [2022-07-21 03:32:16,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971831422] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 03:32:16,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 03:32:16,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 03:32:16,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968713954] [2022-07-21 03:32:16,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:32:16,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 03:32:16,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 03:32:16,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 03:32:16,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 03:32:16,104 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 03:32:17,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:32:17,074 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-07-21 03:32:17,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 03:32:17,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 8 [2022-07-21 03:32:17,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:32:17,075 INFO L225 Difference]: With dead ends: 22 [2022-07-21 03:32:17,075 INFO L226 Difference]: Without dead ends: 15 [2022-07-21 03:32:17,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 03:32:17,076 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 03:32:17,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 03:32:17,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-07-21 03:32:17,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-07-21 03:32:17,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 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 03:32:17,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-07-21 03:32:17,080 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2022-07-21 03:32:17,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:32:17,080 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-07-21 03:32:17,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 03:32:17,081 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-07-21 03:32:17,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-21 03:32:17,081 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:32:17,081 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:32:17,096 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 03:32:17,282 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 03:32:17,282 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:32:17,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:32:17,283 INFO L85 PathProgramCache]: Analyzing trace with hash 180198175, now seen corresponding path program 1 times [2022-07-21 03:32:17,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 03:32:17,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273727568] [2022-07-21 03:32:17,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:32:17,283 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 03:32:17,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 03:32:17,287 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 03:32:17,288 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 03:32:19,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:32:19,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 03:32:19,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:32:37,653 WARN L833 $PredicateComparison]: unable to prove that (or (= |c___VERIFIER_assert_#in~cond| (_ bv1 32)) (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) is different from false [2022-07-21 03:32:38,954 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 03:32:38,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 03:32:38,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 03:32:38,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273727568] [2022-07-21 03:32:38,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273727568] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 03:32:38,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 03:32:38,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 03:32:38,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512627002] [2022-07-21 03:32:38,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:32:38,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 03:32:38,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 03:32:38,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 03:32:38,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2022-07-21 03:32:38,956 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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 03:32:40,889 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 03:32:43,187 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 03:32:45,192 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 03:32:47,324 WARN L833 $PredicateComparison]: unable to prove that (and (or (= |c___VERIFIER_assert_#in~cond| (_ bv1 32)) (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-07-21 03:32:50,338 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 03:32:52,562 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 03:32:54,567 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 03:32:56,848 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 03:32:59,037 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 03:32:59,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:32:59,258 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2022-07-21 03:32:59,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 03:32:59,268 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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 8 [2022-07-21 03:32:59,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:32:59,268 INFO L225 Difference]: With dead ends: 27 [2022-07-21 03:32:59,268 INFO L226 Difference]: Without dead ends: 0 [2022-07-21 03:32:59,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=16, Invalid=20, Unknown=2, NotChecked=18, Total=56 [2022-07-21 03:32:59,270 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 11 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2022-07-21 03:32:59,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 46 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 7 Unknown, 15 Unchecked, 18.1s Time] [2022-07-21 03:32:59,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-21 03:32:59,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-21 03:32:59,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 03:32:59,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-21 03:32:59,271 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2022-07-21 03:32:59,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:32:59,271 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-21 03:32:59,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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 03:32:59,271 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-21 03:32:59,271 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-21 03:32:59,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 03:32:59,292 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 03:32:59,492 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 03:32:59,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-21 03:32:59,702 INFO L902 garLoopResultBuilder]: At program point L33(line 33) the Hoare annotation is: true [2022-07-21 03:32:59,702 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-21 03:32:59,702 INFO L899 garLoopResultBuilder]: For program point L33-1(lines 32 39) no Hoare annotation was computed. [2022-07-21 03:32:59,702 INFO L902 garLoopResultBuilder]: At program point L42(lines 25 43) the Hoare annotation is: true [2022-07-21 03:32:59,702 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-21 03:32:59,702 INFO L899 garLoopResultBuilder]: For program point L32-1(lines 32 39) no Hoare annotation was computed. [2022-07-21 03:32:59,702 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-21 03:32:59,702 INFO L902 garLoopResultBuilder]: At program point L32-3(lines 32 39) the Hoare annotation is: true [2022-07-21 03:32:59,702 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-21 03:32:59,702 INFO L902 garLoopResultBuilder]: At program point L32-4(lines 32 39) the Hoare annotation is: true [2022-07-21 03:32:59,703 INFO L899 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2022-07-21 03:32:59,703 INFO L899 garLoopResultBuilder]: For program point L17(lines 17 20) no Hoare annotation was computed. [2022-07-21 03:32:59,703 INFO L899 garLoopResultBuilder]: For program point L17-2(lines 16 22) no Hoare annotation was computed. [2022-07-21 03:32:59,703 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 16 22) the Hoare annotation is: true [2022-07-21 03:32:59,703 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 16 22) no Hoare annotation was computed. [2022-07-21 03:32:59,703 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2022-07-21 03:32:59,703 INFO L899 garLoopResultBuilder]: For program point L18(lines 18 19) no Hoare annotation was computed. [2022-07-21 03:32:59,705 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-21 03:32:59,706 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 03:32:59,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 03:32:59 BoogieIcfgContainer [2022-07-21 03:32:59,714 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 03:32:59,715 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 03:32:59,715 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 03:32:59,715 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 03:32:59,716 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:32:15" (3/4) ... [2022-07-21 03:32:59,720 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 03:32:59,725 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-07-21 03:32:59,730 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-07-21 03:32:59,730 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-21 03:32:59,731 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 03:32:59,731 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 03:32:59,749 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 03:32:59,750 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 03:32:59,750 INFO L158 Benchmark]: Toolchain (without parser) took 45783.51ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 47.1MB in the beginning and 56.3MB in the end (delta: -9.2MB). Peak memory consumption was 23.7MB. Max. memory is 16.1GB. [2022-07-21 03:32:59,750 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 48.2MB. Free memory was 30.0MB in the beginning and 30.0MB in the end (delta: 32.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 03:32:59,751 INFO L158 Benchmark]: CACSL2BoogieTranslator took 167.68ms. Allocated memory is still 62.9MB. Free memory was 46.9MB in the beginning and 45.9MB in the end (delta: 1.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-21 03:32:59,751 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.47ms. Allocated memory is still 62.9MB. Free memory was 45.7MB in the beginning and 44.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 03:32:59,751 INFO L158 Benchmark]: Boogie Preprocessor took 35.15ms. Allocated memory is still 62.9MB. Free memory was 44.2MB in the beginning and 43.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 03:32:59,751 INFO L158 Benchmark]: RCFGBuilder took 905.52ms. Allocated memory is still 62.9MB. Free memory was 42.9MB in the beginning and 34.2MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-21 03:32:59,752 INFO L158 Benchmark]: TraceAbstraction took 44607.87ms. Allocated memory is still 62.9MB. Free memory was 33.8MB in the beginning and 26.8MB in the end (delta: 6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-21 03:32:59,752 INFO L158 Benchmark]: Witness Printer took 34.90ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 26.8MB in the beginning and 56.3MB in the end (delta: -29.4MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. [2022-07-21 03:32:59,753 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 48.2MB. Free memory was 30.0MB in the beginning and 30.0MB in the end (delta: 32.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 167.68ms. Allocated memory is still 62.9MB. Free memory was 46.9MB in the beginning and 45.9MB in the end (delta: 1.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.47ms. Allocated memory is still 62.9MB. Free memory was 45.7MB in the beginning and 44.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 35.15ms. Allocated memory is still 62.9MB. Free memory was 44.2MB in the beginning and 43.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 905.52ms. Allocated memory is still 62.9MB. Free memory was 42.9MB in the beginning and 34.2MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 44607.87ms. Allocated memory is still 62.9MB. Free memory was 33.8MB in the beginning and 26.8MB in the end (delta: 6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Witness Printer took 34.90ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 26.8MB in the beginning and 56.3MB in the end (delta: -29.4MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 44.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 21.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 19.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 100 SdHoareTripleChecker+Invalid, 18.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 15 IncrementalHoareTripleChecker+Unchecked, 55 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 23 IncrementalHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 45 mSDtfsCounter, 23 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 11 PreInvPairs, 18 NumberOfFragments, 5 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 85 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 19.2s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 1 QuantifiedInterpolants, 113 SizeOfPredicates, 3 NumberOfNonLiveVariables, 79 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-21 03:32:59,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE