./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/ps2-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf 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/ps2-ll.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 91615738315f024e07f7be8f14a0a498ac78d8c7 ...................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 11:59:28,153 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 11:59:28,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 11:59:28,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 11:59:28,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 11:59:28,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 11:59:28,189 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 11:59:28,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 11:59:28,195 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 11:59:28,196 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 11:59:28,197 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 11:59:28,200 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 11:59:28,201 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 11:59:28,203 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 11:59:28,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 11:59:28,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 11:59:28,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 11:59:28,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 11:59:28,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 11:59:28,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 11:59:28,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 11:59:28,221 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 11:59:28,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 11:59:28,222 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 11:59:28,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 11:59:28,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 11:59:28,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 11:59:28,224 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 11:59:28,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 11:59:28,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 11:59:28,225 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 11:59:28,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 11:59:28,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 11:59:28,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 11:59:28,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 11:59:28,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 11:59:28,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 11:59:28,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 11:59:28,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 11:59:28,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 11:59:28,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 11:59:28,230 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 11:59:28,244 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 11:59:28,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 11:59:28,244 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 11:59:28,244 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 11:59:28,245 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 11:59:28,245 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 11:59:28,245 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 11:59:28,245 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 11:59:28,246 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 11:59:28,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 11:59:28,246 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 11:59:28,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 11:59:28,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 11:59:28,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 11:59:28,246 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 11:59:28,246 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 11:59:28,246 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 11:59:28,246 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 11:59:28,246 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 11:59:28,246 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 11:59:28,247 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 11:59:28,247 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 11:59:28,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 11:59:28,247 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 11:59:28,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 11:59:28,247 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 11:59:28,247 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 11:59:28,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 11:59:28,247 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 11:59:28,247 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 11:59:28,247 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91615738315f024e07f7be8f14a0a498ac78d8c7 [2021-08-29 11:59:28,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 11:59:28,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 11:59:28,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 11:59:28,516 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 11:59:28,516 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 11:59:28,517 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/ps2-ll.c [2021-08-29 11:59:28,569 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3ee3f8ec/4f6c2fecaf734dd083884f6e83cca2f6/FLAG0ab6c1680 [2021-08-29 11:59:28,898 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 11:59:28,899 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/ps2-ll.c [2021-08-29 11:59:28,903 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3ee3f8ec/4f6c2fecaf734dd083884f6e83cca2f6/FLAG0ab6c1680 [2021-08-29 11:59:28,914 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3ee3f8ec/4f6c2fecaf734dd083884f6e83cca2f6 [2021-08-29 11:59:28,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 11:59:28,918 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 11:59:28,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 11:59:28,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 11:59:28,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 11:59:28,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:59:28" (1/1) ... [2021-08-29 11:59:28,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@103b5193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:59:28, skipping insertion in model container [2021-08-29 11:59:28,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:59:28" (1/1) ... [2021-08-29 11:59:28,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 11:59:28,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 11:59:29,034 WARN L228 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/ps2-ll.c[454,467] [2021-08-29 11:59:29,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 11:59:29,047 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 11:59:29,060 WARN L228 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/ps2-ll.c[454,467] [2021-08-29 11:59:29,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 11:59:29,072 INFO L208 MainTranslator]: Completed translation [2021-08-29 11:59:29,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:59:29 WrapperNode [2021-08-29 11:59:29,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 11:59:29,076 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 11:59:29,076 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 11:59:29,076 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 11:59:29,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:59:29" (1/1) ... [2021-08-29 11:59:29,118 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:59:29" (1/1) ... [2021-08-29 11:59:29,129 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 11:59:29,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 11:59:29,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 11:59:29,130 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 11:59:29,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:59:29" (1/1) ... [2021-08-29 11:59:29,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:59:29" (1/1) ... [2021-08-29 11:59:29,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:59:29" (1/1) ... [2021-08-29 11:59:29,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:59:29" (1/1) ... [2021-08-29 11:59:29,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:59:29" (1/1) ... [2021-08-29 11:59:29,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:59:29" (1/1) ... [2021-08-29 11:59:29,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:59:29" (1/1) ... [2021-08-29 11:59:29,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 11:59:29,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 11:59:29,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 11:59:29,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 11:59:29,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:59:29" (1/1) ... [2021-08-29 11:59:29,154 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 11:59:29,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 11:59:29,176 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) [2021-08-29 11:59:29,178 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 [2021-08-29 11:59:29,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 11:59:29,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 11:59:29,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 11:59:29,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 11:59:29,291 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 11:59:29,291 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-08-29 11:59:29,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:59:29 BoogieIcfgContainer [2021-08-29 11:59:29,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 11:59:29,293 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 11:59:29,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 11:59:29,295 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 11:59:29,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 11:59:28" (1/3) ... [2021-08-29 11:59:29,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2370db88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:59:29, skipping insertion in model container [2021-08-29 11:59:29,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:59:29" (2/3) ... [2021-08-29 11:59:29,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2370db88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:59:29, skipping insertion in model container [2021-08-29 11:59:29,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:59:29" (3/3) ... [2021-08-29 11:59:29,297 INFO L111 eAbstractionObserver]: Analyzing ICFG ps2-ll.c [2021-08-29 11:59:29,300 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 11:59:29,301 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-29 11:59:29,328 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 11:59:29,334 INFO L339 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, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 11:59:29,334 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-29 11:59:29,344 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 14 states have internal predecessors, (19), 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) [2021-08-29 11:59:29,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-29 11:59:29,347 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:59:29,347 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-29 11:59:29,348 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:59:29,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:59:29,352 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2021-08-29 11:59:29,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:59:29,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744317403] [2021-08-29 11:59:29,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:59:29,358 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:59:29,427 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 11:59:29,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [752385147] [2021-08-29 11:59:29,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:59:29,428 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 11:59:29,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 11:59:29,433 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 11:59:29,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 11:59:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:59:29,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-29 11:59:29,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 11:59:29,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:59:29,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 11:59:29,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:59:29,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744317403] [2021-08-29 11:59:29,631 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 11:59:29,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752385147] [2021-08-29 11:59:29,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752385147] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 11:59:29,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 11:59:29,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 11:59:29,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571640825] [2021-08-29 11:59:29,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 11:59:29,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:59:29,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 11:59:29,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 11:59:29,658 INFO L87 Difference]: Start difference. First operand has 15 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 14 states have internal predecessors, (19), 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) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-08-29 11:59:29,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:59:29,728 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2021-08-29 11:59:29,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 11:59:29,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-08-29 11:59:29,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:59:29,737 INFO L225 Difference]: With dead ends: 38 [2021-08-29 11:59:29,737 INFO L226 Difference]: Without dead ends: 15 [2021-08-29 11:59:29,740 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.04ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 11:59:29,743 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.97ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.41ms IncrementalHoareTripleChecker+Time [2021-08-29 11:59:29,743 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 49 Unknown, 0 Unchecked, 1.97ms Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 43.41ms Time] [2021-08-29 11:59:29,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-08-29 11:59:29,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-08-29 11:59:29,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 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) [2021-08-29 11:59:29,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-08-29 11:59:29,763 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2021-08-29 11:59:29,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:59:29,764 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-08-29 11:59:29,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-08-29 11:59:29,764 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-08-29 11:59:29,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-29 11:59:29,765 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:59:29,765 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-08-29 11:59:29,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-29 11:59:29,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-08-29 11:59:29,969 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:59:29,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:59:29,970 INFO L82 PathProgramCache]: Analyzing trace with hash 300806046, now seen corresponding path program 1 times [2021-08-29 11:59:29,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:59:29,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114755672] [2021-08-29 11:59:29,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:59:29,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:59:29,989 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 11:59:29,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1933051412] [2021-08-29 11:59:29,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:59:29,990 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 11:59:29,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 11:59:29,995 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-29 11:59:29,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-29 11:59:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:59:30,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-29 11:59:30,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 11:59:30,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:59:30,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 11:59:30,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-29 11:59:30,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:59:30,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114755672] [2021-08-29 11:59:30,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 11:59:30,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933051412] [2021-08-29 11:59:30,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933051412] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 11:59:30,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 11:59:30,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-08-29 11:59:30,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711889135] [2021-08-29 11:59:30,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 11:59:30,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:59:30,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 11:59:30,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-29 11:59:30,116 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2021-08-29 11:59:30,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:59:30,181 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-08-29 11:59:30,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 11:59:30,181 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-08-29 11:59:30,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:59:30,182 INFO L225 Difference]: With dead ends: 19 [2021-08-29 11:59:30,182 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 11:59:30,183 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 40.68ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-29 11:59:30,184 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.51ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.31ms IncrementalHoareTripleChecker+Time [2021-08-29 11:59:30,184 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 38 Unknown, 0 Unchecked, 0.51ms Time], IncrementalHoareTripleChecker [11 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 36.31ms Time] [2021-08-29 11:59:30,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 11:59:30,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 11:59:30,187 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) [2021-08-29 11:59:30,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 11:59:30,187 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-08-29 11:59:30,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:59:30,188 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 11:59:30,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2021-08-29 11:59:30,188 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 11:59:30,188 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 11:59:30,190 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-08-29 11:59:30,190 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-08-29 11:59:30,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-29 11:59:30,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-08-29 11:59:30,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 11:59:30,401 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 11:59:30,406 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 11:59:30,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 11:59:30,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 11:59:30,437 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 11:59:30,437 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-08-29 11:59:30,437 INFO L858 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2021-08-29 11:59:30,437 INFO L858 garLoopResultBuilder]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2021-08-29 11:59:30,437 INFO L861 garLoopResultBuilder]: At program point L38(lines 17 39) the Hoare annotation is: true [2021-08-29 11:59:30,438 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 11:59:30,438 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 11:59:30,438 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 11:59:30,438 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-08-29 11:59:30,438 INFO L854 garLoopResultBuilder]: At program point L26-2(lines 26 35) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~y~0 0) (= ULTIMATE.start_main_~x~0 0)) (and (= (+ ULTIMATE.start_main_~y~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (* 2 ULTIMATE.start_main_~x~0)) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-08-29 11:59:30,438 INFO L858 garLoopResultBuilder]: For program point L26-3(lines 26 35) no Hoare annotation was computed. [2021-08-29 11:59:30,438 INFO L858 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2021-08-29 11:59:30,444 INFO L854 garLoopResultBuilder]: At program point L10-2(lines 29 30) the Hoare annotation is: (and (= (+ ULTIMATE.start_main_~y~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (* 2 ULTIMATE.start_main_~x~0)) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) [2021-08-29 11:59:30,444 INFO L858 garLoopResultBuilder]: For program point L10-3(lines 10 13) no Hoare annotation was computed. [2021-08-29 11:59:30,444 INFO L861 garLoopResultBuilder]: At program point L10-5(lines 9 15) the Hoare annotation is: true [2021-08-29 11:59:30,447 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 11:59:30,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 11:59:30 BoogieIcfgContainer [2021-08-29 11:59:30,456 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 11:59:30,456 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 11:59:30,456 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 11:59:30,456 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 11:59:30,457 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:59:29" (3/4) ... [2021-08-29 11:59:30,459 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 11:59:30,464 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-08-29 11:59:30,464 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 11:59:30,464 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 11:59:30,465 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 11:59:30,482 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 11:59:30,483 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 11:59:30,483 INFO L158 Benchmark]: Toolchain (without parser) took 1565.09ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 29.2MB in the beginning and 41.5MB in the end (delta: -12.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 11:59:30,483 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 52.4MB. Free memory was 34.2MB in the beginning and 34.2MB in the end (delta: 38.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 11:59:30,484 INFO L158 Benchmark]: CACSL2BoogieTranslator took 154.97ms. Allocated memory is still 52.4MB. Free memory was 29.0MB in the beginning and 35.1MB in the end (delta: -6.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 11:59:30,484 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.45ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 35.1MB in the beginning and 46.0MB in the end (delta: -10.9MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. [2021-08-29 11:59:30,484 INFO L158 Benchmark]: Boogie Preprocessor took 16.74ms. Allocated memory is still 62.9MB. Free memory was 46.0MB in the beginning and 44.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 11:59:30,485 INFO L158 Benchmark]: RCFGBuilder took 145.30ms. Allocated memory is still 62.9MB. Free memory was 44.9MB in the beginning and 36.7MB in the end (delta: 8.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-08-29 11:59:30,485 INFO L158 Benchmark]: TraceAbstraction took 1162.27ms. Allocated memory is still 62.9MB. Free memory was 36.0MB in the beginning and 44.0MB in the end (delta: -8.0MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2021-08-29 11:59:30,485 INFO L158 Benchmark]: Witness Printer took 26.60ms. Allocated memory is still 62.9MB. Free memory was 44.0MB in the beginning and 41.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 11:59:30,486 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 52.4MB. Free memory was 34.2MB in the beginning and 34.2MB in the end (delta: 38.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 154.97ms. Allocated memory is still 52.4MB. Free memory was 29.0MB in the beginning and 35.1MB in the end (delta: -6.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.45ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 35.1MB in the beginning and 46.0MB in the end (delta: -10.9MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.74ms. Allocated memory is still 62.9MB. Free memory was 46.0MB in the beginning and 44.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 145.30ms. Allocated memory is still 62.9MB. Free memory was 44.9MB in the beginning and 36.7MB in the end (delta: 8.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1162.27ms. Allocated memory is still 62.9MB. Free memory was 36.0MB in the beginning and 44.0MB in the end (delta: -8.0MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. * Witness Printer took 26.60ms. Allocated memory is still 62.9MB. Free memory was 44.0MB in the beginning and 41.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: 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 1 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1120.80ms, OverallIterations: 2, TraceHistogramMax: 2, EmptinessCheckTime: 6.41ms, AutomataDifference: 177.42ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 39.20ms, InitialAbstractionConstructionTime: 7.60ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 79.72ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 63.42ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 72 IncrementalHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 0 mSDtfsCounter, 72 mSolverCounterSat, 2.48ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 67.72ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 11.78ms AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 14 NumberOfFragments, 36 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 10.62ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 31 FormulaSimplificationTreeSizeReductionInter, 24.10ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 7.87ms SsaConstructionTime, 21.38ms SatisfiabilityAnalysisTime, 235.18ms InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 86 SizeOfPredicates, 6 NumberOfNonLiveVariables, 108 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 1/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: y + y * y == 2 * x && 1 <= cond - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: (y == 0 && x == 0) || (y + y * y == 2 * x && 1 <= cond) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-08-29 11:59:30,512 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...