./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-crafted/simple_vardep_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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-crafted/simple_vardep_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 66fc40811a6b64eeba1619d2b2b45575ff6b207a ................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 03:34:40,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 03:34:40,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 03:34:40,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 03:34:40,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 03:34:40,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 03:34:40,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 03:34:40,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 03:34:40,153 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 03:34:40,158 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 03:34:40,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 03:34:40,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 03:34:40,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 03:34:40,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 03:34:40,169 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 03:34:40,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 03:34:40,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 03:34:40,175 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 03:34:40,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 03:34:40,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 03:34:40,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 03:34:40,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 03:34:40,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 03:34:40,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 03:34:40,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 03:34:40,195 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 03:34:40,195 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 03:34:40,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 03:34:40,197 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 03:34:40,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 03:34:40,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 03:34:40,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 03:34:40,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 03:34:40,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 03:34:40,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 03:34:40,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 03:34:40,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 03:34:40,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 03:34:40,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 03:34:40,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 03:34:40,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 03:34:40,206 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 03:34:40,244 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 03:34:40,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 03:34:40,245 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 03:34:40,245 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 03:34:40,247 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 03:34:40,247 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 03:34:40,247 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 03:34:40,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 03:34:40,248 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 03:34:40,248 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 03:34:40,249 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 03:34:40,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 03:34:40,249 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 03:34:40,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 03:34:40,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 03:34:40,250 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 03:34:40,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 03:34:40,250 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 03:34:40,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 03:34:40,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 03:34:40,251 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 03:34:40,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 03:34:40,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 03:34:40,251 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 03:34:40,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 03:34:40,252 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 03:34:40,252 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 03:34:40,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 03:34:40,252 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 03:34:40,253 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 03:34:40,253 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66fc40811a6b64eeba1619d2b2b45575ff6b207a [2021-08-26 03:34:40,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 03:34:40,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 03:34:40,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 03:34:40,596 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 03:34:40,597 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 03:34:40,597 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-crafted/simple_vardep_1.c [2021-08-26 03:34:40,653 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0aaec739/a0a3f38add024c339aa56f37b671b515/FLAG1707d62f1 [2021-08-26 03:34:41,026 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 03:34:41,027 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-crafted/simple_vardep_1.c [2021-08-26 03:34:41,032 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0aaec739/a0a3f38add024c339aa56f37b671b515/FLAG1707d62f1 [2021-08-26 03:34:41,050 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0aaec739/a0a3f38add024c339aa56f37b671b515 [2021-08-26 03:34:41,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 03:34:41,055 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 03:34:41,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 03:34:41,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 03:34:41,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 03:34:41,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:34:41" (1/1) ... [2021-08-26 03:34:41,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51e2c72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:34:41, skipping insertion in model container [2021-08-26 03:34:41,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:34:41" (1/1) ... [2021-08-26 03:34:41,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 03:34:41,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 03:34:41,200 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/loop-crafted/simple_vardep_1.c[584,597] [2021-08-26 03:34:41,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 03:34:41,214 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 03:34:41,224 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/loop-crafted/simple_vardep_1.c[584,597] [2021-08-26 03:34:41,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 03:34:41,261 INFO L208 MainTranslator]: Completed translation [2021-08-26 03:34:41,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:34:41 WrapperNode [2021-08-26 03:34:41,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 03:34:41,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 03:34:41,265 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 03:34:41,265 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 03:34:41,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:34:41" (1/1) ... [2021-08-26 03:34:41,277 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:34:41" (1/1) ... [2021-08-26 03:34:41,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 03:34:41,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 03:34:41,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 03:34:41,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 03:34:41,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:34:41" (1/1) ... [2021-08-26 03:34:41,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:34:41" (1/1) ... [2021-08-26 03:34:41,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:34:41" (1/1) ... [2021-08-26 03:34:41,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:34:41" (1/1) ... [2021-08-26 03:34:41,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:34:41" (1/1) ... [2021-08-26 03:34:41,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:34:41" (1/1) ... [2021-08-26 03:34:41,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:34:41" (1/1) ... [2021-08-26 03:34:41,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 03:34:41,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 03:34:41,314 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 03:34:41,314 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 03:34:41,315 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:34:41" (1/1) ... [2021-08-26 03:34:41,321 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 03:34:41,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:34:41,354 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) [2021-08-26 03:34:41,377 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 [2021-08-26 03:34:41,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 03:34:41,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 03:34:41,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 03:34:41,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 03:34:41,612 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 03:34:41,612 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-26 03:34:41,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:34:41 BoogieIcfgContainer [2021-08-26 03:34:41,614 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 03:34:41,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 03:34:41,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 03:34:41,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 03:34:41,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 03:34:41" (1/3) ... [2021-08-26 03:34:41,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@480597f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:34:41, skipping insertion in model container [2021-08-26 03:34:41,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:34:41" (2/3) ... [2021-08-26 03:34:41,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@480597f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:34:41, skipping insertion in model container [2021-08-26 03:34:41,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:34:41" (3/3) ... [2021-08-26 03:34:41,620 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_vardep_1.c [2021-08-26 03:34:41,627 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 03:34:41,627 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 03:34:41,679 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 03:34:41,686 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 [2021-08-26 03:34:41,686 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 03:34:41,698 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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) [2021-08-26 03:34:41,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-26 03:34:41,701 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:34:41,702 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-26 03:34:41,702 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:34:41,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:34:41,707 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2021-08-26 03:34:41,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:34:41,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393922223] [2021-08-26 03:34:41,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:34:41,716 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:34:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:34:41,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:34:41,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:34:41,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393922223] [2021-08-26 03:34:41,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393922223] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 03:34:41,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 03:34:41,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 03:34:41,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851609414] [2021-08-26 03:34:41,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 03:34:41,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:34:41,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 03:34:41,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 03:34:41,970 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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) [2021-08-26 03:34:42,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:34:42,016 INFO L93 Difference]: Finished difference Result 18 states and 25 transitions. [2021-08-26 03:34:42,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 03:34:42,018 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 [2021-08-26 03:34:42,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:34:42,023 INFO L225 Difference]: With dead ends: 18 [2021-08-26 03:34:42,023 INFO L226 Difference]: Without dead ends: 8 [2021-08-26 03:34:42,025 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.2ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 03:34:42,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-08-26 03:34:42,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-08-26 03:34:42,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2021-08-26 03:34:42,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-08-26 03:34:42,091 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2021-08-26 03:34:42,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:34:42,091 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-08-26 03:34:42,091 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) [2021-08-26 03:34:42,092 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-08-26 03:34:42,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-26 03:34:42,092 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 03:34:42,092 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-08-26 03:34:42,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 03:34:42,093 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 03:34:42,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 03:34:42,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1810804418, now seen corresponding path program 1 times [2021-08-26 03:34:42,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 03:34:42,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041617800] [2021-08-26 03:34:42,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:34:42,094 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 03:34:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:34:42,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:34:42,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 03:34:42,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041617800] [2021-08-26 03:34:42,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041617800] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:34:42,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978815308] [2021-08-26 03:34:42,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 03:34:42,187 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:34:42,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 03:34:42,188 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) [2021-08-26 03:34:42,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-26 03:34:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 03:34:42,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 26 conjunts are in the unsatisfiable core [2021-08-26 03:34:42,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 03:34:42,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 03:34:42,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978815308] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 03:34:42,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 03:34:42,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2021-08-26 03:34:42,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441331240] [2021-08-26 03:34:42,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 03:34:42,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 03:34:42,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 03:34:42,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-08-26 03:34:42,560 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 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) [2021-08-26 03:34:42,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 03:34:42,618 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-08-26 03:34:42,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 03:34:42,619 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 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 [2021-08-26 03:34:42,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 03:34:42,619 INFO L225 Difference]: With dead ends: 9 [2021-08-26 03:34:42,619 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 03:34:42,621 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 86.7ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-08-26 03:34:42,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 03:34:42,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 03:34:42,621 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) [2021-08-26 03:34:42,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 03:34:42,621 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-08-26 03:34:42,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 03:34:42,622 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 03:34:42,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 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) [2021-08-26 03:34:42,622 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 03:34:42,622 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 03:34:42,624 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 03:34:42,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-26 03:34:42,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 03:34:42,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 03:34:42,852 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 03:34:42,910 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 03:34:42,910 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 29) no Hoare annotation was computed. [2021-08-26 03:34:42,910 INFO L857 garLoopResultBuilder]: For program point L9(lines 9 11) no Hoare annotation was computed. [2021-08-26 03:34:42,911 INFO L853 garLoopResultBuilder]: At program point L9-2(lines 7 27) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~k~0 0) (= ULTIMATE.start_main_~i~0 0) (= ULTIMATE.start_main_~j~0 0)) (let ((.cse0 (+ ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~i~0))) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= .cse0 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~k~0 .cse0)))) [2021-08-26 03:34:42,911 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 03:34:42,911 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 03:34:42,911 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 03:34:42,912 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2021-08-26 03:34:42,912 INFO L857 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2021-08-26 03:34:42,915 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 03:34:42,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 03:34:42 BoogieIcfgContainer [2021-08-26 03:34:42,929 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 03:34:42,931 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 03:34:42,931 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 03:34:42,931 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 03:34:42,931 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:34:41" (3/4) ... [2021-08-26 03:34:42,935 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 03:34:42,943 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-08-26 03:34:42,943 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 03:34:42,943 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 03:34:42,944 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 03:34:42,982 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 03:34:42,982 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 03:34:42,984 INFO L168 Benchmark]: Toolchain (without parser) took 1927.84 ms. Allocated memory was 54.5 MB in the beginning and 81.8 MB in the end (delta: 27.3 MB). Free memory was 31.5 MB in the beginning and 31.5 MB in the end (delta: 23.8 kB). Peak memory consumption was 26.4 MB. Max. memory is 16.1 GB. [2021-08-26 03:34:42,984 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 54.5 MB. Free memory was 36.5 MB in the beginning and 36.5 MB in the end (delta: 26.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 03:34:42,985 INFO L168 Benchmark]: CACSL2BoogieTranslator took 207.59 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.3 MB in the beginning and 51.2 MB in the end (delta: -19.9 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2021-08-26 03:34:42,985 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.02 ms. Allocated memory is still 67.1 MB. Free memory was 51.0 MB in the beginning and 49.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 03:34:42,985 INFO L168 Benchmark]: Boogie Preprocessor took 19.95 ms. Allocated memory is still 67.1 MB. Free memory was 49.7 MB in the beginning and 48.7 MB in the end (delta: 981.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 03:34:42,985 INFO L168 Benchmark]: RCFGBuilder took 300.44 ms. Allocated memory is still 67.1 MB. Free memory was 48.7 MB in the beginning and 37.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-26 03:34:42,986 INFO L168 Benchmark]: TraceAbstraction took 1314.13 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 37.4 MB in the beginning and 34.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-08-26 03:34:42,990 INFO L168 Benchmark]: Witness Printer took 51.51 ms. Allocated memory is still 81.8 MB. Free memory was 34.2 MB in the beginning and 31.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 03:34:42,991 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 54.5 MB. Free memory was 36.5 MB in the beginning and 36.5 MB in the end (delta: 26.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 207.59 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.3 MB in the beginning and 51.2 MB in the end (delta: -19.9 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 27.02 ms. Allocated memory is still 67.1 MB. Free memory was 51.0 MB in the beginning and 49.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.95 ms. Allocated memory is still 67.1 MB. Free memory was 49.7 MB in the beginning and 48.7 MB in the end (delta: 981.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 300.44 ms. Allocated memory is still 67.1 MB. Free memory was 48.7 MB in the beginning and 37.9 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1314.13 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 37.4 MB in the beginning and 34.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 51.51 ms. Allocated memory is still 81.8 MB. Free memory was 34.2 MB in the beginning and 31.5 MB in the end (delta: 2.8 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 - PositiveResult [Line: 10]: 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, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1237.6ms, OverallIterations: 2, TraceHistogramMax: 2, EmptinessCheckTime: 6.8ms, AutomataDifference: 135.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 62.1ms, InitialAbstractionConstructionTime: 8.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 10 SDtfs, 7 SDslu, 15 SDs, 0 SdLazy, 17 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 49.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 101.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 20.3ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 4 NumberOfFragments, 25 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 22.9ms HoareSimplificationTime, 1 FomulaSimplificationsInter, 21 FormulaSimplificationTreeSizeReductionInter, 33.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 24.3ms SsaConstructionTime, 120.6ms SatisfiabilityAnalysisTime, 459.3ms InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 92 SizeOfPredicates, 6 NumberOfNonLiveVariables, 63 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 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 1 specifications checked. All of them hold - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: ((k == 0 && i == 0) && j == 0) || ((1 <= cond && j + i <= k) && k <= j + i) RESULT: Ultimate proved your program to be correct! [2021-08-26 03:34:43,023 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...