./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-acceleration/phases_2-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8d31f386 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/loop-acceleration/phases_2-1.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 62c8372256c861b4f8257978673ab17e2a1f1b99 .................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-05 02:40:11,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-05 02:40:11,098 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-05 02:40:11,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-05 02:40:11,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-05 02:40:11,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-05 02:40:11,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-05 02:40:11,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-05 02:40:11,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-05 02:40:11,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-05 02:40:11,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-05 02:40:11,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-05 02:40:11,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-05 02:40:11,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-05 02:40:11,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-05 02:40:11,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-05 02:40:11,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-05 02:40:11,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-05 02:40:11,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-05 02:40:11,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-05 02:40:11,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-05 02:40:11,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-05 02:40:11,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-05 02:40:11,152 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-05 02:40:11,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-05 02:40:11,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-05 02:40:11,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-05 02:40:11,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-05 02:40:11,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-05 02:40:11,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-05 02:40:11,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-05 02:40:11,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-05 02:40:11,161 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-05 02:40:11,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-05 02:40:11,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-05 02:40:11,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-05 02:40:11,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-05 02:40:11,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-05 02:40:11,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-05 02:40:11,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-05 02:40:11,165 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-05 02:40:11,166 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-07-05 02:40:11,192 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-05 02:40:11,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-05 02:40:11,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-05 02:40:11,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-05 02:40:11,194 INFO L138 SettingsManager]: * Use SBE=true [2021-07-05 02:40:11,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-05 02:40:11,195 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-05 02:40:11,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-05 02:40:11,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-05 02:40:11,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-05 02:40:11,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-05 02:40:11,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-05 02:40:11,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-05 02:40:11,196 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-05 02:40:11,196 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-05 02:40:11,197 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-05 02:40:11,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-05 02:40:11,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-05 02:40:11,197 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-05 02:40:11,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-05 02:40:11,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 02:40:11,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-05 02:40:11,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-05 02:40:11,198 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-05 02:40:11,198 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-05 02:40:11,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-05 02:40:11,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-05 02:40:11,198 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-05 02:40:11,199 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62c8372256c861b4f8257978673ab17e2a1f1b99 [2021-07-05 02:40:11,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-05 02:40:11,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-05 02:40:11,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-05 02:40:11,427 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-05 02:40:11,428 INFO L275 PluginConnector]: CDTParser initialized [2021-07-05 02:40:11,429 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/phases_2-1.c [2021-07-05 02:40:11,486 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb00dc7d6/75018963850444af8acbae171e8ab7f1/FLAG0e2ac879b [2021-07-05 02:40:11,842 INFO L306 CDTParser]: Found 1 translation units. [2021-07-05 02:40:11,842 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/phases_2-1.c [2021-07-05 02:40:11,849 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb00dc7d6/75018963850444af8acbae171e8ab7f1/FLAG0e2ac879b [2021-07-05 02:40:11,863 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb00dc7d6/75018963850444af8acbae171e8ab7f1 [2021-07-05 02:40:11,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-05 02:40:11,867 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-05 02:40:11,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-05 02:40:11,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-05 02:40:11,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-05 02:40:11,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 02:40:11" (1/1) ... [2021-07-05 02:40:11,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8c5be5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:40:11, skipping insertion in model container [2021-07-05 02:40:11,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 02:40:11" (1/1) ... [2021-07-05 02:40:11,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-05 02:40:11,888 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-05 02:40:12,010 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/phases_2-1.c[459,472] [2021-07-05 02:40:12,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 02:40:12,028 INFO L203 MainTranslator]: Completed pre-run [2021-07-05 02:40:12,037 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/phases_2-1.c[459,472] [2021-07-05 02:40:12,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 02:40:12,053 INFO L208 MainTranslator]: Completed translation [2021-07-05 02:40:12,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:40:12 WrapperNode [2021-07-05 02:40:12,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-05 02:40:12,054 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-05 02:40:12,055 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-05 02:40:12,056 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-05 02:40:12,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:40:12" (1/1) ... [2021-07-05 02:40:12,071 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:40:12" (1/1) ... [2021-07-05 02:40:12,085 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-05 02:40:12,086 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-05 02:40:12,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-05 02:40:12,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-05 02:40:12,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:40:12" (1/1) ... [2021-07-05 02:40:12,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:40:12" (1/1) ... [2021-07-05 02:40:12,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:40:12" (1/1) ... [2021-07-05 02:40:12,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:40:12" (1/1) ... [2021-07-05 02:40:12,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:40:12" (1/1) ... [2021-07-05 02:40:12,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:40:12" (1/1) ... [2021-07-05 02:40:12,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:40:12" (1/1) ... [2021-07-05 02:40:12,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-05 02:40:12,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-05 02:40:12,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-05 02:40:12,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-05 02:40:12,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:40:12" (1/1) ... [2021-07-05 02:40:12,129 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 02:40:12,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-05 02:40:12,146 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) [2021-07-05 02:40:12,183 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 [2021-07-05 02:40:12,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-05 02:40:12,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-05 02:40:12,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-05 02:40:12,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-05 02:40:12,383 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-05 02:40:12,383 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-07-05 02:40:12,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 02:40:12 BoogieIcfgContainer [2021-07-05 02:40:12,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-05 02:40:12,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-05 02:40:12,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-05 02:40:12,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-05 02:40:12,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.07 02:40:11" (1/3) ... [2021-07-05 02:40:12,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec1a4a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 02:40:12, skipping insertion in model container [2021-07-05 02:40:12,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 02:40:12" (2/3) ... [2021-07-05 02:40:12,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec1a4a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 02:40:12, skipping insertion in model container [2021-07-05 02:40:12,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 02:40:12" (3/3) ... [2021-07-05 02:40:12,389 INFO L111 eAbstractionObserver]: Analyzing ICFG phases_2-1.c [2021-07-05 02:40:12,393 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-05 02:40:12,393 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-05 02:40:12,446 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-05 02:40:12,450 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-05 02:40:12,450 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-05 02:40:12,473 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 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) [2021-07-05 02:40:12,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-07-05 02:40:12,476 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 02:40:12,476 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-05 02:40:12,477 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 02:40:12,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 02:40:12,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1807274184, now seen corresponding path program 1 times [2021-07-05 02:40:12,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 02:40:12,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19482756] [2021-07-05 02:40:12,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 02:40:12,488 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 02:40:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 02:40:12,590 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:40:12,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:40:12,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 02:40:12,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 02:40:12,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 02:40:12,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 02:40:12,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19482756] [2021-07-05 02:40:12,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19482756] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 02:40:12,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 02:40:12,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-05 02:40:12,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935802138] [2021-07-05 02:40:12,602 INFO L425 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-07-05 02:40:12,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 02:40:12,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-07-05 02:40:12,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-05 02:40:12,614 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 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 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-07-05 02:40:12,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 02:40:12,622 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2021-07-05 02:40:12,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-05 02:40:12,623 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-07-05 02:40:12,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 02:40:12,628 INFO L225 Difference]: With dead ends: 19 [2021-07-05 02:40:12,628 INFO L226 Difference]: Without dead ends: 9 [2021-07-05 02:40:12,630 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-07-05 02:40:12,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-07-05 02:40:12,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-07-05 02:40:12,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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) [2021-07-05 02:40:12,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-07-05 02:40:12,649 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 7 [2021-07-05 02:40:12,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 02:40:12,649 INFO L442 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-07-05 02:40:12,650 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-07-05 02:40:12,650 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2021-07-05 02:40:12,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-07-05 02:40:12,650 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 02:40:12,650 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-05 02:40:12,651 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-05 02:40:12,651 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 02:40:12,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 02:40:12,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1806976274, now seen corresponding path program 1 times [2021-07-05 02:40:12,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 02:40:12,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185880587] [2021-07-05 02:40:12,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 02:40:12,654 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 02:40:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-05 02:40:12,690 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-05 02:40:12,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-05 02:40:12,716 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-05 02:40:12,733 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-05 02:40:12,733 INFO L639 BasicCegarLoop]: Counterexample is feasible [2021-07-05 02:40:12,735 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-05 02:40:12,736 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-05 02:40:12,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.07 02:40:12 BoogieIcfgContainer [2021-07-05 02:40:12,755 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-05 02:40:12,755 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-05 02:40:12,755 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-05 02:40:12,756 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-05 02:40:12,756 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 02:40:12" (3/4) ... [2021-07-05 02:40:12,758 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-07-05 02:40:12,788 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-05 02:40:12,789 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-05 02:40:12,790 INFO L168 Benchmark]: Toolchain (without parser) took 922.68 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 29.8 MB in the beginning and 42.5 MB in the end (delta: -12.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 02:40:12,792 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 52.4 MB. Free memory is still 34.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 02:40:12,794 INFO L168 Benchmark]: CACSL2BoogieTranslator took 184.81 ms. Allocated memory is still 52.4 MB. Free memory was 29.6 MB in the beginning and 33.8 MB in the end (delta: -4.2 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2021-07-05 02:40:12,794 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.37 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 33.8 MB in the beginning and 47.4 MB in the end (delta: -13.6 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. [2021-07-05 02:40:12,795 INFO L168 Benchmark]: Boogie Preprocessor took 36.71 ms. Allocated memory is still 62.9 MB. Free memory was 47.4 MB in the beginning and 46.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-05 02:40:12,795 INFO L168 Benchmark]: RCFGBuilder took 260.21 ms. Allocated memory is still 62.9 MB. Free memory was 46.4 MB in the beginning and 35.0 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-07-05 02:40:12,796 INFO L168 Benchmark]: TraceAbstraction took 369.80 ms. Allocated memory is still 62.9 MB. Free memory was 34.4 MB in the beginning and 44.5 MB in the end (delta: -10.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2021-07-05 02:40:12,796 INFO L168 Benchmark]: Witness Printer took 33.83 ms. Allocated memory is still 62.9 MB. Free memory was 44.2 MB in the beginning and 42.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-05 02:40:12,801 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 52.4 MB. Free memory is still 34.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 184.81 ms. Allocated memory is still 52.4 MB. Free memory was 29.6 MB in the beginning and 33.8 MB in the end (delta: -4.2 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.37 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 33.8 MB in the beginning and 47.4 MB in the end (delta: -13.6 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.71 ms. Allocated memory is still 62.9 MB. Free memory was 47.4 MB in the beginning and 46.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 260.21 ms. Allocated memory is still 62.9 MB. Free memory was 46.4 MB in the beginning and 35.0 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 369.80 ms. Allocated memory is still 62.9 MB. Free memory was 34.4 MB in the beginning and 44.5 MB in the end (delta: -10.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * Witness Printer took 33.83 ms. Allocated memory is still 62.9 MB. Free memory was 44.2 MB in the beginning and 42.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] unsigned int x = 1; [L19] unsigned int y = __VERIFIER_nondet_uint(); [L21] COND FALSE !(!(y > 0)) [L23] COND FALSE !(x < y) [L11] COND TRUE !(cond) [L12] reach_error() - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 310.5ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 13.1ms, AutomataDifference: 26.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 10.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.9ms SsaConstructionTime, 50.7ms SatisfiabilityAnalysisTime, 34.5ms InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-07-05 02:40:12,828 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...