./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test23-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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/ldv-regression/test23-1.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 b974f281a213c0803f91ef44d205e442fb2a5f8f .................................................................................................................................................................................................................................................................................... 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 -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/ldv-regression/test23-1.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 b974f281a213c0803f91ef44d205e442fb2a5f8f ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-27 23:53:23,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:53:23,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:53:23,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:53:23,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:53:23,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:53:23,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:53:23,244 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:53:23,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:53:23,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:53:23,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:53:23,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:53:23,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:53:23,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:53:23,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:53:23,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:53:23,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:53:23,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:53:23,261 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:53:23,265 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:53:23,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:53:23,269 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:53:23,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:53:23,272 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:53:23,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:53:23,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:53:23,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:53:23,279 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:53:23,279 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:53:23,280 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:53:23,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:53:23,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:53:23,282 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:53:23,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:53:23,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:53:23,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:53:23,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:53:23,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:53:23,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:53:23,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:53:23,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:53:23,287 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:53:23,303 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:53:23,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:53:23,305 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:53:23,305 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:53:23,305 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:53:23,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:53:23,306 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:53:23,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:53:23,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:53:23,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:53:23,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:53:23,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:53:23,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:53:23,307 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:53:23,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:53:23,308 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:53:23,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:53:23,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:53:23,308 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:53:23,309 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:53:23,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:53:23,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:53:23,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:53:23,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:53:23,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:53:23,310 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:53:23,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:53:23,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:53:23,311 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 -> b974f281a213c0803f91ef44d205e442fb2a5f8f [2019-11-27 23:53:23,647 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:53:23,663 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:53:23,666 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:53:23,668 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:53:23,668 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:53:23,670 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test23-1.c [2019-11-27 23:53:23,740 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37f507597/23a0ee86d7344f2a8a1cf86526ae1474/FLAG62559845e [2019-11-27 23:53:24,200 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:53:24,201 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test23-1.c [2019-11-27 23:53:24,210 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37f507597/23a0ee86d7344f2a8a1cf86526ae1474/FLAG62559845e [2019-11-27 23:53:24,624 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37f507597/23a0ee86d7344f2a8a1cf86526ae1474 [2019-11-27 23:53:24,627 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:53:24,629 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:53:24,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:53:24,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:53:24,633 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:53:24,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:53:24" (1/1) ... [2019-11-27 23:53:24,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fdf04fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:24, skipping insertion in model container [2019-11-27 23:53:24,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:53:24" (1/1) ... [2019-11-27 23:53:24,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:53:24,665 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:53:24,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:53:24,893 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:53:24,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:53:24,993 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:53:24,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:24 WrapperNode [2019-11-27 23:53:24,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:53:24,995 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:53:24,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:53:24,995 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:53:25,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:24" (1/1) ... [2019-11-27 23:53:25,013 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:24" (1/1) ... [2019-11-27 23:53:25,040 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:53:25,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:53:25,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:53:25,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:53:25,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:24" (1/1) ... [2019-11-27 23:53:25,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:24" (1/1) ... [2019-11-27 23:53:25,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:24" (1/1) ... [2019-11-27 23:53:25,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:24" (1/1) ... [2019-11-27 23:53:25,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:24" (1/1) ... [2019-11-27 23:53:25,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:24" (1/1) ... [2019-11-27 23:53:25,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:24" (1/1) ... [2019-11-27 23:53:25,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:53:25,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:53:25,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:53:25,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:53:25,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:24" (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 [2019-11-27 23:53:25,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-27 23:53:25,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:53:25,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:53:25,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-27 23:53:25,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:53:25,439 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:53:25,440 INFO L297 CfgBuilder]: Removed 13 assume(true) statements. [2019-11-27 23:53:25,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:53:25 BoogieIcfgContainer [2019-11-27 23:53:25,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:53:25,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:53:25,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:53:25,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:53:25,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:53:24" (1/3) ... [2019-11-27 23:53:25,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e46c12a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:53:25, skipping insertion in model container [2019-11-27 23:53:25,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:24" (2/3) ... [2019-11-27 23:53:25,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e46c12a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:53:25, skipping insertion in model container [2019-11-27 23:53:25,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:53:25" (3/3) ... [2019-11-27 23:53:25,464 INFO L109 eAbstractionObserver]: Analyzing ICFG test23-1.c [2019-11-27 23:53:25,474 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:53:25,483 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:53:25,495 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:53:25,518 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:53:25,518 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:53:25,518 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:53:25,518 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:53:25,518 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:53:25,518 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:53:25,518 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:53:25,519 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:53:25,532 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-11-27 23:53:25,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-27 23:53:25,538 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:53:25,539 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:53:25,540 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:53:25,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:53:25,545 INFO L82 PathProgramCache]: Analyzing trace with hash 2100293056, now seen corresponding path program 1 times [2019-11-27 23:53:25,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:53:25,554 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137503053] [2019-11-27 23:53:25,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:53:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:53:25,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:53:25,776 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137503053] [2019-11-27 23:53:25,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:53:25,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-27 23:53:25,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069007162] [2019-11-27 23:53:25,783 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 23:53:25,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:53:25,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 23:53:25,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:53:25,802 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-11-27 23:53:25,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:53:25,821 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2019-11-27 23:53:25,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 23:53:25,825 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-11-27 23:53:25,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:53:25,837 INFO L225 Difference]: With dead ends: 30 [2019-11-27 23:53:25,837 INFO L226 Difference]: Without dead ends: 17 [2019-11-27 23:53:25,845 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:53:25,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-27 23:53:25,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-27 23:53:25,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-27 23:53:25,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2019-11-27 23:53:25,887 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 15 [2019-11-27 23:53:25,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:53:25,888 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2019-11-27 23:53:25,889 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 23:53:25,890 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2019-11-27 23:53:25,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-27 23:53:25,891 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:53:25,892 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:53:25,892 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:53:25,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:53:25,893 INFO L82 PathProgramCache]: Analyzing trace with hash 478567452, now seen corresponding path program 1 times [2019-11-27 23:53:25,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:53:25,895 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270163015] [2019-11-27 23:53:25,896 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:53:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:53:26,156 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Undeclared function symbol (const Int) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:478) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:250) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:250) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.termWithLocalSimplification(SmtUtils.java:1315) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.termWithLocalSimplification(SmtUtils.java:1196) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.TermTransferrer.convertApplicationTerm(TermTransferrer.java:182) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$BuildApplicationTerm.walk(TermTransformer.java:339) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computePredicates(NestedInterpolantsBuilder.java:573) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:171) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:300) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:202) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:107) 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:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) 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:316) 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) [2019-11-27 23:53:26,167 INFO L168 Benchmark]: Toolchain (without parser) took 1536.96 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 961.7 MB in the beginning and 1.0 GB in the end (delta: -78.6 MB). Peak memory consumption was 32.0 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:26,167 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:53:26,168 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.71 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -131.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:26,170 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.09 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:53:26,170 INFO L168 Benchmark]: Boogie Preprocessor took 37.66 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:53:26,172 INFO L168 Benchmark]: RCFGBuilder took 368.97 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:26,173 INFO L168 Benchmark]: TraceAbstraction took 709.34 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.9 MB). Peak memory consumption was 33.9 MB. Max. memory is 11.5 GB. [2019-11-27 23:53:26,180 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 364.71 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -131.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 47.09 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.66 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 368.97 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 709.34 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.9 MB). Peak memory consumption was 33.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Undeclared function symbol (const Int) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Undeclared function symbol (const Int): de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:478) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-30f4e4a [2019-11-27 23:53:28,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:53:28,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:53:28,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:53:28,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:53:28,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:53:28,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:53:28,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:53:28,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:53:28,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:53:28,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:53:28,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:53:28,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:53:28,303 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:53:28,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:53:28,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:53:28,309 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:53:28,314 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:53:28,316 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:53:28,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:53:28,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:53:28,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:53:28,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:53:28,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:53:28,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:53:28,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:53:28,328 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:53:28,329 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:53:28,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:53:28,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:53:28,331 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:53:28,332 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:53:28,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:53:28,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:53:28,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:53:28,335 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:53:28,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:53:28,336 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:53:28,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:53:28,337 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:53:28,338 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:53:28,340 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-27 23:53:28,361 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:53:28,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:53:28,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:53:28,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:53:28,363 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:53:28,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:53:28,364 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:53:28,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:53:28,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:53:28,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:53:28,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:53:28,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:53:28,367 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-27 23:53:28,367 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-27 23:53:28,368 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:53:28,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:53:28,368 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:53:28,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:53:28,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:53:28,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:53:28,369 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:53:28,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:53:28,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:53:28,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:53:28,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:53:28,370 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:53:28,371 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-27 23:53:28,371 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-27 23:53:28,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:53:28,371 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-27 23:53:28,372 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 -> b974f281a213c0803f91ef44d205e442fb2a5f8f [2019-11-27 23:53:28,713 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:53:28,729 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:53:28,732 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:53:28,734 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:53:28,734 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:53:28,735 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test23-1.c [2019-11-27 23:53:28,803 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/290b068b3/b5452e678a904c8395f6e9798212c382/FLAG1978d126e [2019-11-27 23:53:29,316 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:53:29,317 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test23-1.c [2019-11-27 23:53:29,325 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/290b068b3/b5452e678a904c8395f6e9798212c382/FLAG1978d126e [2019-11-27 23:53:29,663 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/290b068b3/b5452e678a904c8395f6e9798212c382 [2019-11-27 23:53:29,668 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:53:29,670 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:53:29,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:53:29,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:53:29,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:53:29,677 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:53:29" (1/1) ... [2019-11-27 23:53:29,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73a4f9cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:29, skipping insertion in model container [2019-11-27 23:53:29,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:53:29" (1/1) ... [2019-11-27 23:53:29,689 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:53:29,713 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:53:29,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:53:29,928 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:53:30,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:53:30,033 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:53:30,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:30 WrapperNode [2019-11-27 23:53:30,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:53:30,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:53:30,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:53:30,034 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:53:30,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:30" (1/1) ... [2019-11-27 23:53:30,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:30" (1/1) ... [2019-11-27 23:53:30,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:53:30,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:53:30,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:53:30,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:53:30,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:30" (1/1) ... [2019-11-27 23:53:30,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:30" (1/1) ... [2019-11-27 23:53:30,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:30" (1/1) ... [2019-11-27 23:53:30,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:30" (1/1) ... [2019-11-27 23:53:30,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:30" (1/1) ... [2019-11-27 23:53:30,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:30" (1/1) ... [2019-11-27 23:53:30,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:30" (1/1) ... [2019-11-27 23:53:30,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:53:30,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:53:30,121 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:53:30,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:53:30,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:30" (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 [2019-11-27 23:53:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-27 23:53:30,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:53:30,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:53:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:53:30,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-27 23:53:30,520 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:53:30,521 INFO L297 CfgBuilder]: Removed 13 assume(true) statements. [2019-11-27 23:53:30,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:53:30 BoogieIcfgContainer [2019-11-27 23:53:30,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:53:30,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:53:30,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:53:30,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:53:30,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:53:29" (1/3) ... [2019-11-27 23:53:30,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35462591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:53:30, skipping insertion in model container [2019-11-27 23:53:30,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:53:30" (2/3) ... [2019-11-27 23:53:30,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35462591 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:53:30, skipping insertion in model container [2019-11-27 23:53:30,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:53:30" (3/3) ... [2019-11-27 23:53:30,531 INFO L109 eAbstractionObserver]: Analyzing ICFG test23-1.c [2019-11-27 23:53:30,540 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:53:30,545 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:53:30,556 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:53:30,578 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:53:30,578 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:53:30,579 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:53:30,579 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:53:30,579 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:53:30,579 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:53:30,579 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:53:30,580 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:53:30,595 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-11-27 23:53:30,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-27 23:53:30,601 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:53:30,602 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:53:30,602 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:53:30,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:53:30,608 INFO L82 PathProgramCache]: Analyzing trace with hash 2100293056, now seen corresponding path program 1 times [2019-11-27 23:53:30,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:53:30,618 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457738099] [2019-11-27 23:53:30,619 INFO L94 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 [2019-11-27 23:53:30,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:53:30,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-27 23:53:30,728 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:53:30,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:53:30,743 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:53:30,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:53:30,750 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457738099] [2019-11-27 23:53:30,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:53:30,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-27 23:53:30,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899189410] [2019-11-27 23:53:30,757 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 23:53:30,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:53:30,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 23:53:30,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:53:30,772 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-11-27 23:53:30,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:53:30,788 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2019-11-27 23:53:30,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 23:53:30,789 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-11-27 23:53:30,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:53:30,800 INFO L225 Difference]: With dead ends: 30 [2019-11-27 23:53:30,800 INFO L226 Difference]: Without dead ends: 17 [2019-11-27 23:53:30,804 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:53:30,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-27 23:53:30,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-27 23:53:30,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-27 23:53:30,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2019-11-27 23:53:30,842 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 15 [2019-11-27 23:53:30,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:53:30,842 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2019-11-27 23:53:30,842 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 23:53:30,843 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2019-11-27 23:53:30,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-27 23:53:30,844 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:53:30,844 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:53:31,055 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-27 23:53:31,059 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:53:31,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:53:31,059 INFO L82 PathProgramCache]: Analyzing trace with hash 478567452, now seen corresponding path program 1 times [2019-11-27 23:53:31,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:53:31,062 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980423545] [2019-11-27 23:53:31,062 INFO L94 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) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-11-27 23:53:31,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:53:31,161 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-27 23:53:31,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:53:31,388 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-27 23:53:31,390 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-27 23:53:31,410 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-27 23:53:31,411 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-27 23:53:31,411 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:24 [2019-11-27 23:53:31,475 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2019-11-27 23:53:31,476 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-27 23:53:31,492 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-27 23:53:31,493 INFO L508 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-27 23:53:31,493 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:31, output treesize:16 [2019-11-27 23:53:31,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:53:31,574 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:53:31,679 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 46 [2019-11-27 23:53:31,682 INFO L508 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-27 23:53:31,751 INFO L588 ElimStorePlain]: treesize reduction 25, result has 56.9 percent of original size [2019-11-27 23:53:31,753 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 23:53:31,761 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-27 23:53:31,762 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:40, output treesize:33 [2019-11-27 23:53:31,762 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 23:53:31,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:53:31,804 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980423545] [2019-11-27 23:53:31,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:53:31,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 12 [2019-11-27 23:53:31,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403925250] [2019-11-27 23:53:31,807 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-27 23:53:31,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:53:31,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-27 23:53:31,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-11-27 23:53:31,809 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 12 states. [2019-11-27 23:53:32,694 WARN L192 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2019-11-27 23:53:32,838 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2019-11-27 23:53:33,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:53:33,737 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2019-11-27 23:53:33,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-11-27 23:53:33,741 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2019-11-27 23:53:33,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:53:33,742 INFO L225 Difference]: With dead ends: 71 [2019-11-27 23:53:33,742 INFO L226 Difference]: Without dead ends: 66 [2019-11-27 23:53:33,745 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=243, Invalid=813, Unknown=0, NotChecked=0, Total=1056 [2019-11-27 23:53:33,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-11-27 23:53:33,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 21. [2019-11-27 23:53:33,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-27 23:53:33,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2019-11-27 23:53:33,754 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 16 [2019-11-27 23:53:33,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:53:33,754 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2019-11-27 23:53:33,755 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-27 23:53:33,755 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2019-11-27 23:53:33,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-27 23:53:33,756 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:53:33,756 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:53:33,966 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-27 23:53:33,967 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:53:33,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:53:33,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1495361690, now seen corresponding path program 1 times [2019-11-27 23:53:33,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:53:33,970 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1753192523] [2019-11-27 23:53:33,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-27 23:53:34,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:53:34,034 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-27 23:53:34,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:53:34,159 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-27 23:53:34,160 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-27 23:53:34,176 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-27 23:53:34,177 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-27 23:53:34,178 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:24 [2019-11-27 23:53:34,317 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2019-11-27 23:53:34,318 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-27 23:53:34,337 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-27 23:53:34,337 INFO L508 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-27 23:53:34,338 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:31, output treesize:16 [2019-11-27 23:53:34,398 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:53:34,398 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:53:34,616 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 48 [2019-11-27 23:53:34,617 INFO L508 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-27 23:53:34,692 INFO L588 ElimStorePlain]: treesize reduction 25, result has 55.4 percent of original size [2019-11-27 23:53:34,693 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 23:53:34,697 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-27 23:53:34,697 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:36, output treesize:31 [2019-11-27 23:53:34,698 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 23:53:34,734 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:53:34,735 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1753192523] [2019-11-27 23:53:34,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-27 23:53:34,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 16 [2019-11-27 23:53:34,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206020667] [2019-11-27 23:53:34,736 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-27 23:53:34,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:53:34,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-27 23:53:34,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2019-11-27 23:53:34,737 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 16 states. [2019-11-27 23:53:35,666 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2019-11-27 23:53:36,981 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2019-11-27 23:53:37,594 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2019-11-27 23:53:38,170 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2019-11-27 23:53:39,061 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2019-11-27 23:53:40,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:53:40,158 INFO L93 Difference]: Finished difference Result 103 states and 121 transitions. [2019-11-27 23:53:40,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2019-11-27 23:53:40,159 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 20 [2019-11-27 23:53:40,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:53:40,163 INFO L225 Difference]: With dead ends: 103 [2019-11-27 23:53:40,163 INFO L226 Difference]: Without dead ends: 98 [2019-11-27 23:53:40,166 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1476 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=952, Invalid=3740, Unknown=0, NotChecked=0, Total=4692 [2019-11-27 23:53:40,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-11-27 23:53:40,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 29. [2019-11-27 23:53:40,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-27 23:53:40,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2019-11-27 23:53:40,179 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 20 [2019-11-27 23:53:40,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:53:40,179 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2019-11-27 23:53:40,180 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-27 23:53:40,180 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2019-11-27 23:53:40,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-27 23:53:40,181 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:53:40,181 INFO L410 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:53:40,384 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-27 23:53:40,386 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:53:40,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:53:40,387 INFO L82 PathProgramCache]: Analyzing trace with hash -597070086, now seen corresponding path program 2 times [2019-11-27 23:53:40,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:53:40,388 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [53722939] [2019-11-27 23:53:40,389 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-11-27 23:53:40,464 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-27 23:53:40,465 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-27 23:53:40,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 28 conjunts are in the unsatisfiable core [2019-11-27 23:53:40,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:53:40,566 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-27 23:53:40,566 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-27 23:53:40,581 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-27 23:53:40,582 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-27 23:53:40,582 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:24 [2019-11-27 23:53:41,096 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2019-11-27 23:53:41,097 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-27 23:53:41,108 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-27 23:53:41,109 INFO L508 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-27 23:53:41,110 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:31, output treesize:12 [2019-11-27 23:53:41,194 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:53:41,194 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:53:41,986 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2019-11-27 23:53:41,987 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 23:53:41,988 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 23:53:41,990 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 23:53:41,992 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 23:53:41,993 INFO L508 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-27 23:53:42,106 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 29 [2019-11-27 23:53:42,110 INFO L588 ElimStorePlain]: treesize reduction 73, result has 36.0 percent of original size [2019-11-27 23:53:42,111 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 23:53:42,120 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-27 23:53:42,120 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:72, output treesize:41 [2019-11-27 23:53:42,121 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 23:53:42,167 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:53:42,167 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [53722939] [2019-11-27 23:53:42,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-27 23:53:42,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 26 [2019-11-27 23:53:42,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155152700] [2019-11-27 23:53:42,168 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-27 23:53:42,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:53:42,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-27 23:53:42,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2019-11-27 23:53:42,170 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 26 states. [2019-11-27 23:53:47,458 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2019-11-27 23:53:48,316 WARN L192 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2019-11-27 23:53:48,762 WARN L192 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2019-11-27 23:53:49,308 WARN L192 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2019-11-27 23:53:49,797 WARN L192 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2019-11-27 23:53:50,287 WARN L192 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2019-11-27 23:53:50,854 WARN L192 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2019-11-27 23:53:51,420 WARN L192 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2019-11-27 23:53:51,945 WARN L192 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2019-11-27 23:53:52,404 WARN L192 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2019-11-27 23:53:52,847 WARN L192 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2019-11-27 23:53:53,339 WARN L192 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2019-11-27 23:53:53,832 WARN L192 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2019-11-27 23:53:54,207 WARN L192 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2019-11-27 23:53:54,637 WARN L192 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2019-11-27 23:53:55,080 WARN L192 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2019-11-27 23:53:55,553 WARN L192 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2019-11-27 23:53:55,928 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2019-11-27 23:53:56,291 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2019-11-27 23:53:56,656 WARN L192 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2019-11-27 23:53:57,059 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 30 [2019-11-27 23:53:57,445 WARN L192 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2019-11-27 23:53:57,819 WARN L192 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2019-11-27 23:53:58,199 WARN L192 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2019-11-27 23:53:58,633 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2019-11-27 23:53:58,954 WARN L192 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2019-11-27 23:53:59,925 WARN L192 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2019-11-27 23:54:00,998 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2019-11-27 23:54:01,835 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2019-11-27 23:54:03,050 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 21 [2019-11-27 23:54:03,868 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 27 [2019-11-27 23:54:06,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:54:06,135 INFO L93 Difference]: Finished difference Result 187 states and 217 transitions. [2019-11-27 23:54:06,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2019-11-27 23:54:06,137 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 28 [2019-11-27 23:54:06,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:54:06,139 INFO L225 Difference]: With dead ends: 187 [2019-11-27 23:54:06,139 INFO L226 Difference]: Without dead ends: 182 [2019-11-27 23:54:06,145 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7499 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=3438, Invalid=16868, Unknown=0, NotChecked=0, Total=20306 [2019-11-27 23:54:06,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2019-11-27 23:54:06,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 45. [2019-11-27 23:54:06,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-27 23:54:06,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2019-11-27 23:54:06,156 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 28 [2019-11-27 23:54:06,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:54:06,157 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2019-11-27 23:54:06,157 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-27 23:54:06,157 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2019-11-27 23:54:06,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-27 23:54:06,158 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:54:06,158 INFO L410 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:54:06,359 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-27 23:54:06,360 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:54:06,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:54:06,360 INFO L82 PathProgramCache]: Analyzing trace with hash 958970451, now seen corresponding path program 3 times [2019-11-27 23:54:06,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:54:06,361 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149829251] [2019-11-27 23:54:06,362 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-11-27 23:54:06,550 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2019-11-27 23:54:06,551 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2019-11-27 23:54:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:54:06,708 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-27 23:54:06,708 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:54:06,909 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-27 23:54:06,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:54:06 BoogieIcfgContainer [2019-11-27 23:54:06,967 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:54:06,967 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:54:06,967 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:54:06,968 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:54:06,968 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:53:30" (3/4) ... [2019-11-27 23:54:06,970 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 23:54:07,040 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:54:07,040 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:54:07,042 INFO L168 Benchmark]: Toolchain (without parser) took 37372.27 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 295.2 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -172.6 MB). Peak memory consumption was 122.5 MB. Max. memory is 11.5 GB. [2019-11-27 23:54:07,042 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:54:07,043 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.02 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 89.7 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -126.2 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:54:07,043 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.76 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:54:07,044 INFO L168 Benchmark]: Boogie Preprocessor took 41.62 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:54:07,044 INFO L168 Benchmark]: RCFGBuilder took 401.85 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2019-11-27 23:54:07,045 INFO L168 Benchmark]: TraceAbstraction took 36443.33 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 205.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -66.7 MB). Peak memory consumption was 138.8 MB. Max. memory is 11.5 GB. [2019-11-27 23:54:07,045 INFO L168 Benchmark]: Witness Printer took 72.72 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:54:07,049 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 362.02 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 89.7 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -126.2 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.76 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 41.62 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 401.85 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 36443.33 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 205.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -66.7 MB). Peak memory consumption was 138.8 MB. Max. memory is 11.5 GB. * Witness Printer took 72.72 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 50]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] struct dummy d1, d2; VAL [d1={2:0}, d2={3:0}] [L14] d1.a = __VERIFIER_nondet_int() [L15] d1.b = __VERIFIER_nondet_int() [L17] d2.a = __VERIFIER_nondet_int() [L18] d2.b = __VERIFIER_nondet_int() [L23] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [d1={2:0}, d2={3:0}] [L23] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L34] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); [L23] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [d1={2:0}, d2={3:0}] [L23] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L34] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); [L35] int i = __VERIFIER_nondet_int(); [L36] COND TRUE pd1 != 0 && pd1 == pd2 && i >= 0 && i < 10 [L37] pd2->array[i] = i [L38] int *pa = &pd1->array[i]; [L39] EXPR pd2->array[i] [L39] i = pd2->array[i] - 10 [L40] EXPR \read(*pa) VAL [d1={2:0}, d2={3:0}] [L40] COND TRUE i <= *pa [L41] ++i VAL [d1={2:0}, d2={3:0}] [L40] EXPR \read(*pa) VAL [d1={2:0}, d2={3:0}] [L40] COND TRUE i <= *pa [L41] ++i VAL [d1={2:0}, d2={3:0}] [L40] EXPR \read(*pa) VAL [d1={2:0}, d2={3:0}] [L40] COND TRUE i <= *pa [L41] ++i VAL [d1={2:0}, d2={3:0}] [L40] EXPR \read(*pa) VAL [d1={2:0}, d2={3:0}] [L40] COND TRUE i <= *pa [L41] ++i VAL [d1={2:0}, d2={3:0}] [L40] EXPR \read(*pa) VAL [d1={2:0}, d2={3:0}] [L40] COND TRUE i <= *pa [L41] ++i VAL [d1={2:0}, d2={3:0}] [L40] EXPR \read(*pa) VAL [d1={2:0}, d2={3:0}] [L40] COND TRUE i <= *pa [L41] ++i VAL [d1={2:0}, d2={3:0}] [L40] EXPR \read(*pa) VAL [d1={2:0}, d2={3:0}] [L40] COND TRUE i <= *pa [L41] ++i VAL [d1={2:0}, d2={3:0}] [L40] EXPR \read(*pa) VAL [d1={2:0}, d2={3:0}] [L40] COND TRUE i <= *pa [L41] ++i VAL [d1={2:0}, d2={3:0}] [L40] EXPR \read(*pa) VAL [d1={2:0}, d2={3:0}] [L40] COND TRUE i <= *pa [L41] ++i VAL [d1={2:0}, d2={3:0}] [L40] EXPR \read(*pa) VAL [d1={2:0}, d2={3:0}] [L40] COND TRUE i <= *pa [L41] ++i VAL [d1={2:0}, d2={3:0}] [L40] EXPR \read(*pa) VAL [d1={2:0}, d2={3:0}] [L40] COND TRUE i <= *pa [L41] ++i VAL [d1={2:0}, d2={3:0}] [L40] EXPR \read(*pa) VAL [d1={2:0}, d2={3:0}] [L40] COND FALSE !(i <= *pa) [L28] EXPR s1->array[i] [L28] return s1->array[i] == i; [L43] COND TRUE !check(pd2, i) [L50] __VERIFIER_error() VAL [d1={2:0}, d2={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Result: UNSAFE, OverallTime: 36.3s, OverallIterations: 5, TraceHistogramMax: 12, AutomataDifference: 31.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 53 SDtfs, 621 SDslu, 253 SDs, 0 SdLazy, 701 SolverSat, 340 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 341 GetRequests, 99 SyntacticMatches, 3 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9190 ImplicationChecksByTransitivity, 30.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=4, 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, 4 MinimizatonAttempts, 251 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 150 ConstructedInterpolants, 0 QuantifiedInterpolants, 26049 SizeOfPredicates, 42 NumberOfNonLiveVariables, 239 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 0/96 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...