./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-acceleration/functions_1-1.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/functions_1-1.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f0ae8481cb7d66387a2e77b5a671f790dc346fc7 .............................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/functions_1-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f0ae8481cb7d66387a2e77b5a671f790dc346fc7 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 18:13:16,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 18:13:16,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 18:13:16,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 18:13:16,348 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 18:13:16,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 18:13:16,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 18:13:16,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 18:13:16,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 18:13:16,371 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 18:13:16,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 18:13:16,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 18:13:16,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 18:13:16,377 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 18:13:16,379 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 18:13:16,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 18:13:16,381 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 18:13:16,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 18:13:16,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 18:13:16,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 18:13:16,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 18:13:16,399 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 18:13:16,401 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 18:13:16,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 18:13:16,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 18:13:16,405 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 18:13:16,405 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 18:13:16,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 18:13:16,408 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 18:13:16,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 18:13:16,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 18:13:16,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 18:13:16,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 18:13:16,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 18:13:16,414 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 18:13:16,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 18:13:16,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 18:13:16,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 18:13:16,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 18:13:16,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 18:13:16,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 18:13:16,419 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 18:13:16,457 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 18:13:16,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 18:13:16,459 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 18:13:16,459 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 18:13:16,462 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 18:13:16,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 18:13:16,463 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 18:13:16,463 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 18:13:16,463 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 18:13:16,464 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 18:13:16,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 18:13:16,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 18:13:16,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 18:13:16,465 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 18:13:16,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 18:13:16,465 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 18:13:16,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 18:13:16,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 18:13:16,467 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 18:13:16,467 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 18:13:16,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 18:13:16,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 18:13:16,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 18:13:16,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 18:13:16,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 18:13:16,468 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 18:13:16,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 18:13:16,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 18:13:16,469 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 18:13:16,469 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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(__VERIFIER_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 -> f0ae8481cb7d66387a2e77b5a671f790dc346fc7 [2020-07-28 18:13:16,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 18:13:16,801 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 18:13:16,805 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 18:13:16,807 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 18:13:16,811 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 18:13:16,812 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/functions_1-1.c [2020-07-28 18:13:16,878 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf7593016/ebf15630721042d5ad4a141d14eac384/FLAG0022415ab [2020-07-28 18:13:17,273 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 18:13:17,274 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/functions_1-1.c [2020-07-28 18:13:17,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf7593016/ebf15630721042d5ad4a141d14eac384/FLAG0022415ab [2020-07-28 18:13:17,642 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf7593016/ebf15630721042d5ad4a141d14eac384 [2020-07-28 18:13:17,646 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 18:13:17,649 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 18:13:17,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 18:13:17,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 18:13:17,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 18:13:17,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 06:13:17" (1/1) ... [2020-07-28 18:13:17,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e8b784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:17, skipping insertion in model container [2020-07-28 18:13:17,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 06:13:17" (1/1) ... [2020-07-28 18:13:17,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 18:13:17,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 18:13:17,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 18:13:17,877 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 18:13:17,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 18:13:17,913 INFO L208 MainTranslator]: Completed translation [2020-07-28 18:13:17,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:17 WrapperNode [2020-07-28 18:13:17,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 18:13:17,915 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 18:13:17,915 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 18:13:17,915 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 18:13:17,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:17" (1/1) ... [2020-07-28 18:13:17,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:17" (1/1) ... [2020-07-28 18:13:18,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 18:13:18,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 18:13:18,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 18:13:18,024 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 18:13:18,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:17" (1/1) ... [2020-07-28 18:13:18,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:17" (1/1) ... [2020-07-28 18:13:18,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:17" (1/1) ... [2020-07-28 18:13:18,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:17" (1/1) ... [2020-07-28 18:13:18,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:17" (1/1) ... [2020-07-28 18:13:18,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:17" (1/1) ... [2020-07-28 18:13:18,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:17" (1/1) ... [2020-07-28 18:13:18,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 18:13:18,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 18:13:18,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 18:13:18,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 18:13:18,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 18:13:18,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 18:13:18,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 18:13:18,334 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 18:13:18,335 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-07-28 18:13:18,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:13:18 BoogieIcfgContainer [2020-07-28 18:13:18,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 18:13:18,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 18:13:18,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 18:13:18,346 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 18:13:18,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 06:13:17" (1/3) ... [2020-07-28 18:13:18,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10556ee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 06:13:18, skipping insertion in model container [2020-07-28 18:13:18,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:17" (2/3) ... [2020-07-28 18:13:18,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10556ee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 06:13:18, skipping insertion in model container [2020-07-28 18:13:18,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:13:18" (3/3) ... [2020-07-28 18:13:18,351 INFO L109 eAbstractionObserver]: Analyzing ICFG functions_1-1.c [2020-07-28 18:13:18,359 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 18:13:18,364 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 18:13:18,376 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 18:13:18,400 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 18:13:18,400 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 18:13:18,401 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 18:13:18,401 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 18:13:18,401 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 18:13:18,401 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 18:13:18,401 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 18:13:18,402 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 18:13:18,415 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-07-28 18:13:18,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-07-28 18:13:18,420 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 18:13:18,421 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-07-28 18:13:18,421 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 18:13:18,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 18:13:18,426 INFO L82 PathProgramCache]: Analyzing trace with hash 29806986, now seen corresponding path program 1 times [2020-07-28 18:13:18,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 18:13:18,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755174378] [2020-07-28 18:13:18,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 18:13:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 18:13:18,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 18:13:18,555 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) at de.uni_freiburg.informatik.ultimate.smtinterpol.proof.ProofTermGenerator.convert(ProofTermGenerator.java:150) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getProof(SMTInterpol.java:797) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-28 18:13:18,561 INFO L168 Benchmark]: Toolchain (without parser) took 912.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -123.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 18:13:18,562 INFO L168 Benchmark]: CDTParser took 0.59 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 18:13:18,563 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.07 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 18:13:18,564 INFO L168 Benchmark]: Boogie Procedure Inliner took 107.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -168.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2020-07-28 18:13:18,565 INFO L168 Benchmark]: Boogie Preprocessor took 35.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2020-07-28 18:13:18,566 INFO L168 Benchmark]: RCFGBuilder took 281.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. [2020-07-28 18:13:18,567 INFO L168 Benchmark]: TraceAbstraction took 215.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2020-07-28 18:13:18,572 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 264.07 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 107.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -168.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 281.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 215.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: null: de.uni_freiburg.informatik.ultimate.smtinterpol.proof.FixResolutionProof.fix(FixResolutionProof.java:191) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 18:13:20,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 18:13:20,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 18:13:20,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 18:13:20,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 18:13:20,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 18:13:20,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 18:13:20,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 18:13:20,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 18:13:20,553 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 18:13:20,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 18:13:20,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 18:13:20,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 18:13:20,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 18:13:20,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 18:13:20,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 18:13:20,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 18:13:20,577 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 18:13:20,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 18:13:20,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 18:13:20,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 18:13:20,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 18:13:20,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 18:13:20,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 18:13:20,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 18:13:20,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 18:13:20,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 18:13:20,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 18:13:20,604 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 18:13:20,606 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 18:13:20,606 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 18:13:20,608 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 18:13:20,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 18:13:20,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 18:13:20,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 18:13:20,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 18:13:20,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 18:13:20,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 18:13:20,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 18:13:20,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 18:13:20,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 18:13:20,619 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-07-28 18:13:20,656 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 18:13:20,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 18:13:20,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 18:13:20,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 18:13:20,658 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 18:13:20,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 18:13:20,659 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 18:13:20,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 18:13:20,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 18:13:20,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 18:13:20,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 18:13:20,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 18:13:20,664 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-07-28 18:13:20,664 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-07-28 18:13:20,664 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 18:13:20,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 18:13:20,665 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 18:13:20,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 18:13:20,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 18:13:20,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 18:13:20,669 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 18:13:20,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 18:13:20,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 18:13:20,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 18:13:20,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 18:13:20,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 18:13:20,673 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-07-28 18:13:20,673 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-07-28 18:13:20,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 18:13:20,675 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 18:13:20,675 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-28 18:13:20,676 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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(__VERIFIER_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 -> f0ae8481cb7d66387a2e77b5a671f790dc346fc7 [2020-07-28 18:13:20,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 18:13:20,990 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 18:13:20,993 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 18:13:20,994 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 18:13:20,994 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 18:13:20,995 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/functions_1-1.c [2020-07-28 18:13:21,056 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e4d4b063/e47e511317e64ae89af7846a59f9fd0b/FLAGc66eca5b3 [2020-07-28 18:13:21,494 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 18:13:21,494 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/functions_1-1.c [2020-07-28 18:13:21,501 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e4d4b063/e47e511317e64ae89af7846a59f9fd0b/FLAGc66eca5b3 [2020-07-28 18:13:21,875 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e4d4b063/e47e511317e64ae89af7846a59f9fd0b [2020-07-28 18:13:21,878 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 18:13:21,882 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 18:13:21,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 18:13:21,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 18:13:21,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 18:13:21,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 06:13:21" (1/1) ... [2020-07-28 18:13:21,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19c58d29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:21, skipping insertion in model container [2020-07-28 18:13:21,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 06:13:21" (1/1) ... [2020-07-28 18:13:21,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 18:13:21,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 18:13:22,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 18:13:22,095 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 18:13:22,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 18:13:22,130 INFO L208 MainTranslator]: Completed translation [2020-07-28 18:13:22,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:22 WrapperNode [2020-07-28 18:13:22,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 18:13:22,133 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 18:13:22,133 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 18:13:22,134 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 18:13:22,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:22" (1/1) ... [2020-07-28 18:13:22,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:22" (1/1) ... [2020-07-28 18:13:22,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 18:13:22,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 18:13:22,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 18:13:22,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 18:13:22,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:22" (1/1) ... [2020-07-28 18:13:22,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:22" (1/1) ... [2020-07-28 18:13:22,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:22" (1/1) ... [2020-07-28 18:13:22,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:22" (1/1) ... [2020-07-28 18:13:22,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:22" (1/1) ... [2020-07-28 18:13:22,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:22" (1/1) ... [2020-07-28 18:13:22,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:22" (1/1) ... [2020-07-28 18:13:22,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 18:13:22,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 18:13:22,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 18:13:22,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 18:13:22,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 18:13:22,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 18:13:22,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 18:13:22,526 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 18:13:22,527 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-07-28 18:13:22,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:13:22 BoogieIcfgContainer [2020-07-28 18:13:22,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 18:13:22,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 18:13:22,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 18:13:22,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 18:13:22,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 06:13:21" (1/3) ... [2020-07-28 18:13:22,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9a199c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 06:13:22, skipping insertion in model container [2020-07-28 18:13:22,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:13:22" (2/3) ... [2020-07-28 18:13:22,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9a199c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 06:13:22, skipping insertion in model container [2020-07-28 18:13:22,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:13:22" (3/3) ... [2020-07-28 18:13:22,542 INFO L109 eAbstractionObserver]: Analyzing ICFG functions_1-1.c [2020-07-28 18:13:22,561 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 18:13:22,570 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 18:13:22,586 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 18:13:22,617 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 18:13:22,617 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 18:13:22,617 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 18:13:22,618 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 18:13:22,618 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 18:13:22,618 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 18:13:22,618 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 18:13:22,619 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 18:13:22,636 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-07-28 18:13:22,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-07-28 18:13:22,643 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 18:13:22,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-07-28 18:13:22,644 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 18:13:22,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 18:13:22,654 INFO L82 PathProgramCache]: Analyzing trace with hash 29806986, now seen corresponding path program 1 times [2020-07-28 18:13:22,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 18:13:22,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330633707] [2020-07-28 18:13:22,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-07-28 18:13:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 18:13:22,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-28 18:13:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 18:13:22,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 18:13:22,781 INFO L280 TraceCheckUtils]: 0: Hoare triple {13#true} havoc main_#res;havoc main_#t~ret0, main_~x~0;main_~x~0 := 0bv32; {18#(= (_ bv0 32) ULTIMATE.start_main_~x~0)} is VALID [2020-07-28 18:13:22,783 INFO L280 TraceCheckUtils]: 1: Hoare triple {18#(= (_ bv0 32) ULTIMATE.start_main_~x~0)} assume !~bvult32(main_~x~0, 268435455bv32); {14#false} is VALID [2020-07-28 18:13:22,783 INFO L280 TraceCheckUtils]: 2: Hoare triple {14#false} __VERIFIER_assert_#in~cond := (if 0bv32 == ~bvurem32(main_~x~0, 2bv32) then 1bv32 else 0bv32);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {14#false} is VALID [2020-07-28 18:13:22,783 INFO L280 TraceCheckUtils]: 3: Hoare triple {14#false} assume 0bv32 == __VERIFIER_assert_~cond; {14#false} is VALID [2020-07-28 18:13:22,784 INFO L280 TraceCheckUtils]: 4: Hoare triple {14#false} assume !false; {14#false} is VALID [2020-07-28 18:13:22,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 18:13:22,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 18:13:22,812 INFO L280 TraceCheckUtils]: 4: Hoare triple {14#false} assume !false; {14#false} is VALID [2020-07-28 18:13:22,813 INFO L280 TraceCheckUtils]: 3: Hoare triple {14#false} assume 0bv32 == __VERIFIER_assert_~cond; {14#false} is VALID [2020-07-28 18:13:22,814 INFO L280 TraceCheckUtils]: 2: Hoare triple {14#false} __VERIFIER_assert_#in~cond := (if 0bv32 == ~bvurem32(main_~x~0, 2bv32) then 1bv32 else 0bv32);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {14#false} is VALID [2020-07-28 18:13:22,815 INFO L280 TraceCheckUtils]: 1: Hoare triple {40#(bvult ULTIMATE.start_main_~x~0 (_ bv268435455 32))} assume !~bvult32(main_~x~0, 268435455bv32); {14#false} is VALID [2020-07-28 18:13:22,817 INFO L280 TraceCheckUtils]: 0: Hoare triple {13#true} havoc main_#res;havoc main_#t~ret0, main_~x~0;main_~x~0 := 0bv32; {40#(bvult ULTIMATE.start_main_~x~0 (_ bv268435455 32))} is VALID [2020-07-28 18:13:22,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 18:13:22,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330633707] [2020-07-28 18:13:22,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 18:13:22,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-07-28 18:13:22,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584883575] [2020-07-28 18:13:22,827 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-07-28 18:13:22,828 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 18:13:22,832 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-28 18:13:22,848 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 7 edges. 7 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 18:13:22,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-28 18:13:22,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 18:13:22,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-28 18:13:22,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-28 18:13:22,860 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 4 states. [2020-07-28 18:13:22,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:13:22,954 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2020-07-28 18:13:22,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-28 18:13:22,955 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-07-28 18:13:22,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 18:13:22,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 18:13:22,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2020-07-28 18:13:22,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 18:13:22,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2020-07-28 18:13:22,965 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 23 transitions. [2020-07-28 18:13:23,003 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 18:13:23,012 INFO L225 Difference]: With dead ends: 19 [2020-07-28 18:13:23,013 INFO L226 Difference]: Without dead ends: 9 [2020-07-28 18:13:23,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-28 18:13:23,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-07-28 18:13:23,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2020-07-28 18:13:23,052 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 18:13:23,053 INFO L82 GeneralOperation]: Start isEquivalent. First operand 9 states. Second operand 8 states. [2020-07-28 18:13:23,053 INFO L74 IsIncluded]: Start isIncluded. First operand 9 states. Second operand 8 states. [2020-07-28 18:13:23,054 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 8 states. [2020-07-28 18:13:23,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:13:23,056 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2020-07-28 18:13:23,056 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-07-28 18:13:23,057 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 18:13:23,057 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 18:13:23,057 INFO L74 IsIncluded]: Start isIncluded. First operand 8 states. Second operand 9 states. [2020-07-28 18:13:23,057 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 9 states. [2020-07-28 18:13:23,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:13:23,059 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2020-07-28 18:13:23,059 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-07-28 18:13:23,060 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 18:13:23,060 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 18:13:23,060 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 18:13:23,061 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 18:13:23,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-28 18:13:23,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-07-28 18:13:23,064 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2020-07-28 18:13:23,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 18:13:23,064 INFO L479 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-07-28 18:13:23,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-28 18:13:23,065 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-07-28 18:13:23,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-07-28 18:13:23,065 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 18:13:23,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-07-28 18:13:23,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-07-28 18:13:23,278 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 18:13:23,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 18:13:23,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1367025204, now seen corresponding path program 1 times [2020-07-28 18:13:23,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 18:13:23,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333587796] [2020-07-28 18:13:23,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2020-07-28 18:13:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 18:13:23,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 6 conjunts are in the unsatisfiable core Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-07-28 18:13:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 18:13:23,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 18:13:23,378 INFO L280 TraceCheckUtils]: 0: Hoare triple {97#true} havoc main_#res;havoc main_#t~ret0, main_~x~0;main_~x~0 := 0bv32; {102#(= (_ bv0 32) ULTIMATE.start_main_~x~0)} is VALID [2020-07-28 18:13:23,380 INFO L280 TraceCheckUtils]: 1: Hoare triple {102#(= (_ bv0 32) ULTIMATE.start_main_~x~0)} assume !!~bvult32(main_~x~0, 268435455bv32);f_#in~z := main_~x~0;havoc f_#res;havoc f_~z;f_~z := f_#in~z;f_#res := ~bvadd32(2bv32, f_~z); {106#(= (_ bv2 32) |ULTIMATE.start_f_#res|)} is VALID [2020-07-28 18:13:23,381 INFO L280 TraceCheckUtils]: 2: Hoare triple {106#(= (_ bv2 32) |ULTIMATE.start_f_#res|)} main_#t~ret0 := f_#res;main_~x~0 := main_#t~ret0;havoc main_#t~ret0; {110#(= (_ bv2 32) ULTIMATE.start_main_~x~0)} is VALID [2020-07-28 18:13:23,383 INFO L280 TraceCheckUtils]: 3: Hoare triple {110#(= (_ bv2 32) ULTIMATE.start_main_~x~0)} assume !~bvult32(main_~x~0, 268435455bv32); {98#false} is VALID [2020-07-28 18:13:23,384 INFO L280 TraceCheckUtils]: 4: Hoare triple {98#false} __VERIFIER_assert_#in~cond := (if 0bv32 == ~bvurem32(main_~x~0, 2bv32) then 1bv32 else 0bv32);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {98#false} is VALID [2020-07-28 18:13:23,384 INFO L280 TraceCheckUtils]: 5: Hoare triple {98#false} assume 0bv32 == __VERIFIER_assert_~cond; {98#false} is VALID [2020-07-28 18:13:23,384 INFO L280 TraceCheckUtils]: 6: Hoare triple {98#false} assume !false; {98#false} is VALID [2020-07-28 18:13:23,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 18:13:23,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 18:13:23,482 INFO L280 TraceCheckUtils]: 6: Hoare triple {98#false} assume !false; {98#false} is VALID [2020-07-28 18:13:23,483 INFO L280 TraceCheckUtils]: 5: Hoare triple {98#false} assume 0bv32 == __VERIFIER_assert_~cond; {98#false} is VALID [2020-07-28 18:13:23,483 INFO L280 TraceCheckUtils]: 4: Hoare triple {98#false} __VERIFIER_assert_#in~cond := (if 0bv32 == ~bvurem32(main_~x~0, 2bv32) then 1bv32 else 0bv32);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {98#false} is VALID [2020-07-28 18:13:23,484 INFO L280 TraceCheckUtils]: 3: Hoare triple {132#(bvult ULTIMATE.start_main_~x~0 (_ bv268435455 32))} assume !~bvult32(main_~x~0, 268435455bv32); {98#false} is VALID [2020-07-28 18:13:23,485 INFO L280 TraceCheckUtils]: 2: Hoare triple {136#(bvult |ULTIMATE.start_f_#res| (_ bv268435455 32))} main_#t~ret0 := f_#res;main_~x~0 := main_#t~ret0;havoc main_#t~ret0; {132#(bvult ULTIMATE.start_main_~x~0 (_ bv268435455 32))} is VALID [2020-07-28 18:13:23,487 INFO L280 TraceCheckUtils]: 1: Hoare triple {140#(bvult (bvadd ULTIMATE.start_main_~x~0 (_ bv2 32)) (_ bv268435455 32))} assume !!~bvult32(main_~x~0, 268435455bv32);f_#in~z := main_~x~0;havoc f_#res;havoc f_~z;f_~z := f_#in~z;f_#res := ~bvadd32(2bv32, f_~z); {136#(bvult |ULTIMATE.start_f_#res| (_ bv268435455 32))} is VALID [2020-07-28 18:13:23,489 INFO L280 TraceCheckUtils]: 0: Hoare triple {97#true} havoc main_#res;havoc main_#t~ret0, main_~x~0;main_~x~0 := 0bv32; {140#(bvult (bvadd ULTIMATE.start_main_~x~0 (_ bv2 32)) (_ bv268435455 32))} is VALID [2020-07-28 18:13:23,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 18:13:23,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333587796] [2020-07-28 18:13:23,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-28 18:13:23,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-07-28 18:13:23,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299695577] [2020-07-28 18:13:23,495 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2020-07-28 18:13:23,496 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 18:13:23,496 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states. [2020-07-28 18:13:23,522 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 18:13:23,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-28 18:13:23,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 18:13:23,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-28 18:13:23,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-28 18:13:23,523 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 8 states. [2020-07-28 18:13:23,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:13:23,755 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2020-07-28 18:13:23,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-28 18:13:23,755 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2020-07-28 18:13:23,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 18:13:23,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-28 18:13:23,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2020-07-28 18:13:23,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-07-28 18:13:23,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 17 transitions. [2020-07-28 18:13:23,763 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 8 states and 17 transitions. [2020-07-28 18:13:23,797 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 18:13:23,798 INFO L225 Difference]: With dead ends: 16 [2020-07-28 18:13:23,798 INFO L226 Difference]: Without dead ends: 12 [2020-07-28 18:13:23,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-07-28 18:13:23,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-07-28 18:13:23,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-07-28 18:13:23,823 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 18:13:23,823 INFO L82 GeneralOperation]: Start isEquivalent. First operand 12 states. Second operand 12 states. [2020-07-28 18:13:23,823 INFO L74 IsIncluded]: Start isIncluded. First operand 12 states. Second operand 12 states. [2020-07-28 18:13:23,823 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 12 states. [2020-07-28 18:13:23,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:13:23,825 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-07-28 18:13:23,825 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-07-28 18:13:23,826 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 18:13:23,826 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 18:13:23,826 INFO L74 IsIncluded]: Start isIncluded. First operand 12 states. Second operand 12 states. [2020-07-28 18:13:23,826 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 12 states. [2020-07-28 18:13:23,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:13:23,828 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-07-28 18:13:23,828 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-07-28 18:13:23,829 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 18:13:23,829 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 18:13:23,829 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 18:13:23,829 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 18:13:23,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-28 18:13:23,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-07-28 18:13:23,831 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2020-07-28 18:13:23,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 18:13:23,832 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-07-28 18:13:23,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-28 18:13:23,832 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-07-28 18:13:23,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-28 18:13:23,833 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 18:13:23,833 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2020-07-28 18:13:24,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-07-28 18:13:24,044 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 18:13:24,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 18:13:24,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1241648944, now seen corresponding path program 2 times [2020-07-28 18:13:24,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 18:13:24,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050499690] [2020-07-28 18:13:24,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-07-28 18:13:24,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-28 18:13:24,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-28 18:13:24,076 WARN L261 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-28 18:13:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 18:13:24,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 18:13:24,231 INFO L280 TraceCheckUtils]: 0: Hoare triple {217#true} havoc main_#res;havoc main_#t~ret0, main_~x~0;main_~x~0 := 0bv32; {222#(= (_ bv0 32) ULTIMATE.start_main_~x~0)} is VALID [2020-07-28 18:13:24,232 INFO L280 TraceCheckUtils]: 1: Hoare triple {222#(= (_ bv0 32) ULTIMATE.start_main_~x~0)} assume !!~bvult32(main_~x~0, 268435455bv32);f_#in~z := main_~x~0;havoc f_#res;havoc f_~z;f_~z := f_#in~z;f_#res := ~bvadd32(2bv32, f_~z); {226#(= (_ bv2 32) |ULTIMATE.start_f_#res|)} is VALID [2020-07-28 18:13:24,233 INFO L280 TraceCheckUtils]: 2: Hoare triple {226#(= (_ bv2 32) |ULTIMATE.start_f_#res|)} main_#t~ret0 := f_#res;main_~x~0 := main_#t~ret0;havoc main_#t~ret0; {230#(= (_ bv2 32) ULTIMATE.start_main_~x~0)} is VALID [2020-07-28 18:13:24,233 INFO L280 TraceCheckUtils]: 3: Hoare triple {230#(= (_ bv2 32) ULTIMATE.start_main_~x~0)} assume !!~bvult32(main_~x~0, 268435455bv32);f_#in~z := main_~x~0;havoc f_#res;havoc f_~z;f_~z := f_#in~z;f_#res := ~bvadd32(2bv32, f_~z); {234#(= (_ bv4 32) |ULTIMATE.start_f_#res|)} is VALID [2020-07-28 18:13:24,234 INFO L280 TraceCheckUtils]: 4: Hoare triple {234#(= (_ bv4 32) |ULTIMATE.start_f_#res|)} main_#t~ret0 := f_#res;main_~x~0 := main_#t~ret0;havoc main_#t~ret0; {238#(= (_ bv4 32) ULTIMATE.start_main_~x~0)} is VALID [2020-07-28 18:13:24,235 INFO L280 TraceCheckUtils]: 5: Hoare triple {238#(= (_ bv4 32) ULTIMATE.start_main_~x~0)} assume !!~bvult32(main_~x~0, 268435455bv32);f_#in~z := main_~x~0;havoc f_#res;havoc f_~z;f_~z := f_#in~z;f_#res := ~bvadd32(2bv32, f_~z); {242#(= (_ bv6 32) |ULTIMATE.start_f_#res|)} is VALID [2020-07-28 18:13:24,236 INFO L280 TraceCheckUtils]: 6: Hoare triple {242#(= (_ bv6 32) |ULTIMATE.start_f_#res|)} main_#t~ret0 := f_#res;main_~x~0 := main_#t~ret0;havoc main_#t~ret0; {246#(= (_ bv6 32) ULTIMATE.start_main_~x~0)} is VALID [2020-07-28 18:13:24,237 INFO L280 TraceCheckUtils]: 7: Hoare triple {246#(= (_ bv6 32) ULTIMATE.start_main_~x~0)} assume !~bvult32(main_~x~0, 268435455bv32); {246#(= (_ bv6 32) ULTIMATE.start_main_~x~0)} is VALID [2020-07-28 18:13:24,238 INFO L280 TraceCheckUtils]: 8: Hoare triple {246#(= (_ bv6 32) ULTIMATE.start_main_~x~0)} __VERIFIER_assert_#in~cond := (if 0bv32 == ~bvurem32(main_~x~0, 2bv32) then 1bv32 else 0bv32);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {253#(= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))} is VALID [2020-07-28 18:13:24,239 INFO L280 TraceCheckUtils]: 9: Hoare triple {253#(= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))} assume 0bv32 == __VERIFIER_assert_~cond; {218#false} is VALID [2020-07-28 18:13:24,240 INFO L280 TraceCheckUtils]: 10: Hoare triple {218#false} assume !false; {218#false} is VALID [2020-07-28 18:13:24,241 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 18:13:24,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 18:13:24,433 INFO L280 TraceCheckUtils]: 10: Hoare triple {218#false} assume !false; {218#false} is VALID [2020-07-28 18:13:24,433 INFO L280 TraceCheckUtils]: 9: Hoare triple {263#(not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))} assume 0bv32 == __VERIFIER_assert_~cond; {218#false} is VALID [2020-07-28 18:13:24,435 INFO L280 TraceCheckUtils]: 8: Hoare triple {267#(= (bvurem ULTIMATE.start_main_~x~0 (_ bv2 32)) (_ bv0 32))} __VERIFIER_assert_#in~cond := (if 0bv32 == ~bvurem32(main_~x~0, 2bv32) then 1bv32 else 0bv32);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {263#(not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))} is VALID [2020-07-28 18:13:24,436 INFO L280 TraceCheckUtils]: 7: Hoare triple {267#(= (bvurem ULTIMATE.start_main_~x~0 (_ bv2 32)) (_ bv0 32))} assume !~bvult32(main_~x~0, 268435455bv32); {267#(= (bvurem ULTIMATE.start_main_~x~0 (_ bv2 32)) (_ bv0 32))} is VALID [2020-07-28 18:13:24,437 INFO L280 TraceCheckUtils]: 6: Hoare triple {274#(= (bvurem |ULTIMATE.start_f_#res| (_ bv2 32)) (_ bv0 32))} main_#t~ret0 := f_#res;main_~x~0 := main_#t~ret0;havoc main_#t~ret0; {267#(= (bvurem ULTIMATE.start_main_~x~0 (_ bv2 32)) (_ bv0 32))} is VALID [2020-07-28 18:13:24,439 INFO L280 TraceCheckUtils]: 5: Hoare triple {267#(= (bvurem ULTIMATE.start_main_~x~0 (_ bv2 32)) (_ bv0 32))} assume !!~bvult32(main_~x~0, 268435455bv32);f_#in~z := main_~x~0;havoc f_#res;havoc f_~z;f_~z := f_#in~z;f_#res := ~bvadd32(2bv32, f_~z); {274#(= (bvurem |ULTIMATE.start_f_#res| (_ bv2 32)) (_ bv0 32))} is VALID [2020-07-28 18:13:24,440 INFO L280 TraceCheckUtils]: 4: Hoare triple {274#(= (bvurem |ULTIMATE.start_f_#res| (_ bv2 32)) (_ bv0 32))} main_#t~ret0 := f_#res;main_~x~0 := main_#t~ret0;havoc main_#t~ret0; {267#(= (bvurem ULTIMATE.start_main_~x~0 (_ bv2 32)) (_ bv0 32))} is VALID [2020-07-28 18:13:24,442 INFO L280 TraceCheckUtils]: 3: Hoare triple {267#(= (bvurem ULTIMATE.start_main_~x~0 (_ bv2 32)) (_ bv0 32))} assume !!~bvult32(main_~x~0, 268435455bv32);f_#in~z := main_~x~0;havoc f_#res;havoc f_~z;f_~z := f_#in~z;f_#res := ~bvadd32(2bv32, f_~z); {274#(= (bvurem |ULTIMATE.start_f_#res| (_ bv2 32)) (_ bv0 32))} is VALID [2020-07-28 18:13:24,443 INFO L280 TraceCheckUtils]: 2: Hoare triple {274#(= (bvurem |ULTIMATE.start_f_#res| (_ bv2 32)) (_ bv0 32))} main_#t~ret0 := f_#res;main_~x~0 := main_#t~ret0;havoc main_#t~ret0; {267#(= (bvurem ULTIMATE.start_main_~x~0 (_ bv2 32)) (_ bv0 32))} is VALID [2020-07-28 18:13:24,444 INFO L280 TraceCheckUtils]: 1: Hoare triple {267#(= (bvurem ULTIMATE.start_main_~x~0 (_ bv2 32)) (_ bv0 32))} assume !!~bvult32(main_~x~0, 268435455bv32);f_#in~z := main_~x~0;havoc f_#res;havoc f_~z;f_~z := f_#in~z;f_#res := ~bvadd32(2bv32, f_~z); {274#(= (bvurem |ULTIMATE.start_f_#res| (_ bv2 32)) (_ bv0 32))} is VALID [2020-07-28 18:13:24,446 INFO L280 TraceCheckUtils]: 0: Hoare triple {217#true} havoc main_#res;havoc main_#t~ret0, main_~x~0;main_~x~0 := 0bv32; {267#(= (bvurem ULTIMATE.start_main_~x~0 (_ bv2 32)) (_ bv0 32))} is VALID [2020-07-28 18:13:24,447 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-28 18:13:24,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2050499690] [2020-07-28 18:13:24,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-28 18:13:24,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2020-07-28 18:13:24,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637859243] [2020-07-28 18:13:24,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-07-28 18:13:24,451 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 18:13:24,452 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-28 18:13:24,464 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 7 edges. 7 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 18:13:24,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-28 18:13:24,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 18:13:24,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-28 18:13:24,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-07-28 18:13:24,466 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 5 states. [2020-07-28 18:13:24,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:13:24,584 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-07-28 18:13:24,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-28 18:13:24,585 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-07-28 18:13:24,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 18:13:24,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-28 18:13:24,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 8 transitions. [2020-07-28 18:13:24,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-28 18:13:24,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 8 transitions. [2020-07-28 18:13:24,588 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 8 transitions. [2020-07-28 18:13:24,601 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 8 edges. 8 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 18:13:24,602 INFO L225 Difference]: With dead ends: 12 [2020-07-28 18:13:24,602 INFO L226 Difference]: Without dead ends: 0 [2020-07-28 18:13:24,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-07-28 18:13:24,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-28 18:13:24,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-28 18:13:24,603 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 18:13:24,604 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-28 18:13:24,604 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 18:13:24,604 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 18:13:24,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:13:24,605 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 18:13:24,605 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 18:13:24,605 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 18:13:24,606 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 18:13:24,606 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 18:13:24,606 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 18:13:24,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:13:24,606 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 18:13:24,607 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 18:13:24,607 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 18:13:24,607 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 18:13:24,608 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 18:13:24,608 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 18:13:24,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-28 18:13:24,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-28 18:13:24,609 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-07-28 18:13:24,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 18:13:24,609 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-28 18:13:24,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-28 18:13:24,610 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 18:13:24,610 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 18:13:24,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-07-28 18:13:24,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-28 18:13:24,987 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-28 18:13:24,988 INFO L264 CegarLoopResult]: At program point L17-2(lines 17 19) the Hoare annotation is: (or (and (= (bvurem ULTIMATE.start_main_~x~0 (_ bv2 32)) (_ bv0 32)) (= (bvurem |ULTIMATE.start_f_#res| (_ bv2 32)) (_ bv0 32))) (= (_ bv0 32) ULTIMATE.start_main_~x~0)) [2020-07-28 18:13:24,988 INFO L268 CegarLoopResult]: For program point L17-3(lines 17 19) no Hoare annotation was computed. [2020-07-28 18:13:24,988 INFO L264 CegarLoopResult]: At program point L11(lines 10 12) the Hoare annotation is: (and (= (bvurem ULTIMATE.start_main_~x~0 (_ bv2 32)) (_ bv0 32)) (= (bvurem |ULTIMATE.start_f_#res| (_ bv2 32)) (_ bv0 32)) (bvult ULTIMATE.start_main_~x~0 (_ bv268435455 32))) [2020-07-28 18:13:24,988 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-28 18:13:24,989 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-28 18:13:24,989 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-28 18:13:24,989 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-07-28 18:13:24,989 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-07-28 18:13:24,989 INFO L271 CegarLoopResult]: At program point L4-2(lines 1 22) the Hoare annotation is: true [2020-07-28 18:13:24,994 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 18:13:24,994 WARN L170 areAnnotationChecker]: L17-3 has no Hoare annotation [2020-07-28 18:13:24,994 WARN L170 areAnnotationChecker]: L17-3 has no Hoare annotation [2020-07-28 18:13:24,996 WARN L170 areAnnotationChecker]: L17-3 has no Hoare annotation [2020-07-28 18:13:24,998 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-28 18:13:24,998 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-28 18:13:24,999 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-28 18:13:24,999 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-28 18:13:24,999 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 18:13:24,999 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 18:13:24,999 INFO L163 areAnnotationChecker]: CFG has 2 edges. 2 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 18:13:25,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 06:13:25 BoogieIcfgContainer [2020-07-28 18:13:25,010 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 18:13:25,011 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 18:13:25,011 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 18:13:25,011 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 18:13:25,012 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:13:22" (3/4) ... [2020-07-28 18:13:25,016 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-07-28 18:13:25,027 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-07-28 18:13:25,027 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-07-28 18:13:25,054 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (~bvurem32(x, 2bv32) == 0bv32 && ~bvurem32(\result, 2bv32) == 0bv32) || 0bv32 == x [2020-07-28 18:13:25,058 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (~bvurem32(x, 2bv32) == 0bv32 && ~bvurem32(\result, 2bv32) == 0bv32) && ~bvult32(x, 268435455bv32) [2020-07-28 18:13:25,071 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 18:13:25,071 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 18:13:25,074 INFO L168 Benchmark]: Toolchain (without parser) took 3193.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 961.6 MB in the beginning and 937.6 MB in the end (delta: 24.0 MB). Peak memory consumption was 166.1 MB. Max. memory is 11.5 GB. [2020-07-28 18:13:25,075 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 18:13:25,076 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.46 ms. Allocated memory is still 1.0 GB. Free memory was 961.6 MB in the beginning and 950.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 18:13:25,077 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 950.8 MB in the beginning and 1.1 GB in the end (delta: -187.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-07-28 18:13:25,077 INFO L168 Benchmark]: Boogie Preprocessor took 19.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 18:13:25,078 INFO L168 Benchmark]: RCFGBuilder took 287.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2020-07-28 18:13:25,079 INFO L168 Benchmark]: TraceAbstraction took 2477.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 937.6 MB in the end (delta: 176.1 MB). Peak memory consumption was 176.1 MB. Max. memory is 11.5 GB. [2020-07-28 18:13:25,079 INFO L168 Benchmark]: Witness Printer took 60.34 ms. Allocated memory is still 1.2 GB. Free memory is still 937.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 18:13:25,083 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 248.46 ms. Allocated memory is still 1.0 GB. Free memory was 961.6 MB in the beginning and 950.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 91.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 950.8 MB in the beginning and 1.1 GB in the end (delta: -187.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.72 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 287.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2477.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 937.6 MB in the end (delta: 176.1 MB). Peak memory consumption was 176.1 MB. Max. memory is 11.5 GB. * Witness Printer took 60.34 ms. Allocated memory is still 1.2 GB. Free memory is still 937.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (~bvurem32(x, 2bv32) == 0bv32 && ~bvurem32(\result, 2bv32) == 0bv32) || 0bv32 == x - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (~bvurem32(x, 2bv32) == 0bv32 && ~bvurem32(\result, 2bv32) == 0bv32) && ~bvult32(x, 268435455bv32) - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 7 SDslu, 21 SDs, 0 SdLazy, 37 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 9 NumberOfFragments, 30 HoareAnnotationTreeSize, 3 FomulaSimplifications, 48 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 48 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 954 SizeOfPredicates, 21 NumberOfNonLiveVariables, 44 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 9/20 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 correct! Received shutdown request...