./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/res1of.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/res1of.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 3a3478a1f8f5e0d27a86d66b8c8f652c3c6facdc ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.25-8bd4bc6 [2020-07-28 14:54:05,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 14:54:05,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 14:54:05,907 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 14:54:05,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 14:54:05,910 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 14:54:05,912 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 14:54:05,925 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 14:54:05,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 14:54:05,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 14:54:05,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 14:54:05,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 14:54:05,933 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 14:54:05,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 14:54:05,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 14:54:05,940 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 14:54:05,941 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 14:54:05,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 14:54:05,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 14:54:05,950 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 14:54:05,952 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 14:54:05,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 14:54:05,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 14:54:05,961 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 14:54:05,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 14:54:05,965 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 14:54:05,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 14:54:05,967 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 14:54:05,967 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 14:54:05,968 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 14:54:05,968 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 14:54:05,970 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 14:54:05,972 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 14:54:05,973 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 14:54:05,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 14:54:05,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 14:54:05,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 14:54:05,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 14:54:05,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 14:54:05,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 14:54:05,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 14:54:05,980 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 14:54:06,003 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 14:54:06,003 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 14:54:06,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 14:54:06,008 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 14:54:06,008 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 14:54:06,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 14:54:06,008 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 14:54:06,009 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 14:54:06,009 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 14:54:06,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 14:54:06,011 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 14:54:06,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 14:54:06,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 14:54:06,012 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 14:54:06,012 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 14:54:06,012 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 14:54:06,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 14:54:06,013 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 14:54:06,013 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 14:54:06,014 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 14:54:06,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 14:54:06,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 14:54:06,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 14:54:06,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 14:54:06,015 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 14:54:06,015 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 14:54:06,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 14:54:06,016 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 14:54:06,016 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 14:54:06,016 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 -> 3a3478a1f8f5e0d27a86d66b8c8f652c3c6facdc [2020-07-28 14:54:06,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 14:54:06,333 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 14:54:06,337 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 14:54:06,338 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 14:54:06,341 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 14:54:06,342 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/res1of.c [2020-07-28 14:54:06,403 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f0d54e7e/1700b258089c4d7eb57b1c4e62241c3c/FLAGad761679f [2020-07-28 14:54:06,851 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 14:54:06,852 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/res1of.c [2020-07-28 14:54:06,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f0d54e7e/1700b258089c4d7eb57b1c4e62241c3c/FLAGad761679f [2020-07-28 14:54:07,371 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f0d54e7e/1700b258089c4d7eb57b1c4e62241c3c [2020-07-28 14:54:07,375 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 14:54:07,378 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 14:54:07,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 14:54:07,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 14:54:07,384 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 14:54:07,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 02:54:07" (1/1) ... [2020-07-28 14:54:07,389 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ef73c09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:54:07, skipping insertion in model container [2020-07-28 14:54:07,389 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 02:54:07" (1/1) ... [2020-07-28 14:54:07,397 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 14:54:07,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 14:54:07,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 14:54:07,661 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 14:54:07,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 14:54:07,801 INFO L208 MainTranslator]: Completed translation [2020-07-28 14:54:07,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:54:07 WrapperNode [2020-07-28 14:54:07,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 14:54:07,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 14:54:07,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 14:54:07,805 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 14:54:07,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:54:07" (1/1) ... [2020-07-28 14:54:07,834 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:54:07" (1/1) ... [2020-07-28 14:54:07,871 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 14:54:07,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 14:54:07,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 14:54:07,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 14:54:07,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:54:07" (1/1) ... [2020-07-28 14:54:07,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:54:07" (1/1) ... [2020-07-28 14:54:07,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:54:07" (1/1) ... [2020-07-28 14:54:07,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:54:07" (1/1) ... [2020-07-28 14:54:07,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:54:07" (1/1) ... [2020-07-28 14:54:07,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:54:07" (1/1) ... [2020-07-28 14:54:07,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:54:07" (1/1) ... [2020-07-28 14:54:07,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 14:54:07,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 14:54:07,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 14:54:07,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 14:54:07,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:54:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 14:54:07,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 14:54:07,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-28 14:54:07,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-28 14:54:07,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 14:54:07,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 14:54:07,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-28 14:54:07,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-28 14:54:08,368 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 14:54:08,368 INFO L295 CfgBuilder]: Removed 12 assume(true) statements. [2020-07-28 14:54:08,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 02:54:08 BoogieIcfgContainer [2020-07-28 14:54:08,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 14:54:08,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 14:54:08,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 14:54:08,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 14:54:08,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 02:54:07" (1/3) ... [2020-07-28 14:54:08,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b3f9a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 02:54:08, skipping insertion in model container [2020-07-28 14:54:08,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 02:54:07" (2/3) ... [2020-07-28 14:54:08,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b3f9a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 02:54:08, skipping insertion in model container [2020-07-28 14:54:08,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 02:54:08" (3/3) ... [2020-07-28 14:54:08,380 INFO L109 eAbstractionObserver]: Analyzing ICFG res1of.c [2020-07-28 14:54:08,389 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 14:54:08,396 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 14:54:08,406 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 14:54:08,429 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 14:54:08,429 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 14:54:08,429 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 14:54:08,430 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 14:54:08,430 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 14:54:08,430 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 14:54:08,431 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 14:54:08,431 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 14:54:08,447 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-28 14:54:08,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-28 14:54:08,453 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 14:54:08,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 14:54:08,455 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 14:54:08,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 14:54:08,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1202110748, now seen corresponding path program 1 times [2020-07-28 14:54:08,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 14:54:08,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124475414] [2020-07-28 14:54:08,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 14:54:08,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 14:54:08,622 INFO L280 TraceCheckUtils]: 0: Hoare triple {27#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~N~0 := 0; {27#true} is VALID [2020-07-28 14:54:08,623 INFO L280 TraceCheckUtils]: 1: Hoare triple {27#true} havoc main_#res;havoc main_#t~nondet0, main_#t~malloc1.base, main_#t~malloc1.offset, main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~post3, main_#t~mem5, main_#t~mem6, main_#t~post4, main_#t~post7, main_#t~mem9, main_#t~mem10, main_#t~post8, main_#t~mem11, main_~i~0, main_~#sum~0.base, main_~#sum~0.offset, main_~a~0.base, main_~a~0.offset, main_~b~0.base, main_~b~0.offset;assume -2147483648 <= main_#t~nondet0 && main_#t~nondet0 <= 2147483647;~N~0 := main_#t~nondet0;havoc main_#t~nondet0; {27#true} is VALID [2020-07-28 14:54:08,623 INFO L280 TraceCheckUtils]: 2: Hoare triple {27#true} assume !(~N~0 <= 0);assume_abort_if_not_#in~cond := (if ~N~0 <= 536870911 then 1 else 0);havoc assume_abort_if_not_~cond;assume_abort_if_not_~cond := assume_abort_if_not_#in~cond; {27#true} is VALID [2020-07-28 14:54:08,625 INFO L280 TraceCheckUtils]: 3: Hoare triple {27#true} assume 0 == assume_abort_if_not_~cond;assume false; {28#false} is VALID [2020-07-28 14:54:08,625 INFO L280 TraceCheckUtils]: 4: Hoare triple {28#false} havoc main_~i~0;call main_~#sum~0.base, main_~#sum~0.offset := #Ultimate.allocOnStack(8);call main_#t~malloc1.base, main_#t~malloc1.offset := #Ultimate.allocOnHeap(4 * ~N~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc1.base, main_#t~malloc1.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnHeap(4 * ~N~0);main_~b~0.base, main_~b~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;call write~int(0, main_~#sum~0.base, main_~#sum~0.offset, 8);main_~i~0 := 0; {28#false} is VALID [2020-07-28 14:54:08,626 INFO L280 TraceCheckUtils]: 5: Hoare triple {28#false} assume !(main_~i~0 < ~N~0); {28#false} is VALID [2020-07-28 14:54:08,626 INFO L280 TraceCheckUtils]: 6: Hoare triple {28#false} main_~i~0 := 0; {28#false} is VALID [2020-07-28 14:54:08,626 INFO L280 TraceCheckUtils]: 7: Hoare triple {28#false} assume !(main_~i~0 < ~N~0); {28#false} is VALID [2020-07-28 14:54:08,626 INFO L280 TraceCheckUtils]: 8: Hoare triple {28#false} main_~i~0 := 0; {28#false} is VALID [2020-07-28 14:54:08,627 INFO L280 TraceCheckUtils]: 9: Hoare triple {28#false} assume !(main_~i~0 < ~N~0); {28#false} is VALID [2020-07-28 14:54:08,627 INFO L280 TraceCheckUtils]: 10: Hoare triple {28#false} main_~i~0 := 0; {28#false} is VALID [2020-07-28 14:54:08,627 INFO L280 TraceCheckUtils]: 11: Hoare triple {28#false} assume !true; {28#false} is VALID [2020-07-28 14:54:08,628 INFO L280 TraceCheckUtils]: 12: Hoare triple {28#false} call main_#t~mem11 := read~int(main_~#sum~0.base, main_~#sum~0.offset, 8);__VERIFIER_assert_#in~cond := (if main_#t~mem11 <= ~N~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {28#false} is VALID [2020-07-28 14:54:08,628 INFO L280 TraceCheckUtils]: 13: Hoare triple {28#false} assume 0 == __VERIFIER_assert_~cond; {28#false} is VALID [2020-07-28 14:54:08,628 INFO L280 TraceCheckUtils]: 14: Hoare triple {28#false} assume !false; {28#false} is VALID [2020-07-28 14:54:08,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 14:54:08,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124475414] [2020-07-28 14:54:08,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 14:54:08,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-28 14:54:08,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182752922] [2020-07-28 14:54:08,639 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-07-28 14:54:08,640 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 14:54:08,643 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 14:54:08,677 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:54:08,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 14:54:08,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 14:54:08,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 14:54:08,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 14:54:08,689 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2020-07-28 14:54:08,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:54:08,771 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2020-07-28 14:54:08,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 14:54:08,772 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-07-28 14:54:08,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 14:54:08,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 14:54:08,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 62 transitions. [2020-07-28 14:54:08,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 14:54:08,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 62 transitions. [2020-07-28 14:54:08,787 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 62 transitions. [2020-07-28 14:54:08,877 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 62 edges. 62 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:54:08,888 INFO L225 Difference]: With dead ends: 44 [2020-07-28 14:54:08,888 INFO L226 Difference]: Without dead ends: 20 [2020-07-28 14:54:08,892 INFO L675 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 [2020-07-28 14:54:08,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-28 14:54:08,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-07-28 14:54:08,925 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 14:54:08,925 INFO L82 GeneralOperation]: Start isEquivalent. First operand 20 states. Second operand 20 states. [2020-07-28 14:54:08,926 INFO L74 IsIncluded]: Start isIncluded. First operand 20 states. Second operand 20 states. [2020-07-28 14:54:08,926 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 20 states. [2020-07-28 14:54:08,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:54:08,929 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2020-07-28 14:54:08,930 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-07-28 14:54:08,930 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:54:08,930 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:54:08,931 INFO L74 IsIncluded]: Start isIncluded. First operand 20 states. Second operand 20 states. [2020-07-28 14:54:08,931 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 20 states. [2020-07-28 14:54:08,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:54:08,933 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2020-07-28 14:54:08,934 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-07-28 14:54:08,934 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:54:08,934 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:54:08,935 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 14:54:08,935 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 14:54:08,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-28 14:54:08,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-07-28 14:54:08,939 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 15 [2020-07-28 14:54:08,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 14:54:08,939 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-07-28 14:54:08,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 14:54:08,940 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-07-28 14:54:08,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-28 14:54:08,941 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 14:54:08,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 14:54:08,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 14:54:08,941 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 14:54:08,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 14:54:08,942 INFO L82 PathProgramCache]: Analyzing trace with hash -944124056, now seen corresponding path program 1 times [2020-07-28 14:54:08,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 14:54:08,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693621768] [2020-07-28 14:54:08,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 14:54:08,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 14:54:09,034 INFO L280 TraceCheckUtils]: 0: Hoare triple {149#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;~N~0 := 0; {149#true} is VALID [2020-07-28 14:54:09,035 INFO L280 TraceCheckUtils]: 1: Hoare triple {149#true} havoc main_#res;havoc main_#t~nondet0, main_#t~malloc1.base, main_#t~malloc1.offset, main_#t~malloc2.base, main_#t~malloc2.offset, main_#t~post3, main_#t~mem5, main_#t~mem6, main_#t~post4, main_#t~post7, main_#t~mem9, main_#t~mem10, main_#t~post8, main_#t~mem11, main_~i~0, main_~#sum~0.base, main_~#sum~0.offset, main_~a~0.base, main_~a~0.offset, main_~b~0.base, main_~b~0.offset;assume -2147483648 <= main_#t~nondet0 && main_#t~nondet0 <= 2147483647;~N~0 := main_#t~nondet0;havoc main_#t~nondet0; {149#true} is VALID [2020-07-28 14:54:09,036 INFO L280 TraceCheckUtils]: 2: Hoare triple {149#true} assume !(~N~0 <= 0);assume_abort_if_not_#in~cond := (if ~N~0 <= 536870911 then 1 else 0);havoc assume_abort_if_not_~cond;assume_abort_if_not_~cond := assume_abort_if_not_#in~cond; {151#(<= 1 ~N~0)} is VALID [2020-07-28 14:54:09,037 INFO L280 TraceCheckUtils]: 3: Hoare triple {151#(<= 1 ~N~0)} assume !(0 == assume_abort_if_not_~cond); {151#(<= 1 ~N~0)} is VALID [2020-07-28 14:54:09,039 INFO L280 TraceCheckUtils]: 4: Hoare triple {151#(<= 1 ~N~0)} havoc main_~i~0;call main_~#sum~0.base, main_~#sum~0.offset := #Ultimate.allocOnStack(8);call main_#t~malloc1.base, main_#t~malloc1.offset := #Ultimate.allocOnHeap(4 * ~N~0);main_~a~0.base, main_~a~0.offset := main_#t~malloc1.base, main_#t~malloc1.offset;call main_#t~malloc2.base, main_#t~malloc2.offset := #Ultimate.allocOnHeap(4 * ~N~0);main_~b~0.base, main_~b~0.offset := main_#t~malloc2.base, main_#t~malloc2.offset;call write~int(0, main_~#sum~0.base, main_~#sum~0.offset, 8);main_~i~0 := 0; {152#(and (= 0 ULTIMATE.start_main_~i~0) (<= 1 ~N~0))} is VALID [2020-07-28 14:54:09,040 INFO L280 TraceCheckUtils]: 5: Hoare triple {152#(and (= 0 ULTIMATE.start_main_~i~0) (<= 1 ~N~0))} assume !(main_~i~0 < ~N~0); {150#false} is VALID [2020-07-28 14:54:09,041 INFO L280 TraceCheckUtils]: 6: Hoare triple {150#false} main_~i~0 := 0; {150#false} is VALID [2020-07-28 14:54:09,041 INFO L280 TraceCheckUtils]: 7: Hoare triple {150#false} assume !(main_~i~0 < ~N~0); {150#false} is VALID [2020-07-28 14:54:09,041 INFO L280 TraceCheckUtils]: 8: Hoare triple {150#false} main_~i~0 := 0; {150#false} is VALID [2020-07-28 14:54:09,042 INFO L280 TraceCheckUtils]: 9: Hoare triple {150#false} assume !(main_~i~0 < ~N~0); {150#false} is VALID [2020-07-28 14:54:09,042 INFO L280 TraceCheckUtils]: 10: Hoare triple {150#false} main_~i~0 := 0; {150#false} is VALID [2020-07-28 14:54:09,043 INFO L280 TraceCheckUtils]: 11: Hoare triple {150#false} assume !(main_~i~0 < ~N~0); {150#false} is VALID [2020-07-28 14:54:09,043 INFO L280 TraceCheckUtils]: 12: Hoare triple {150#false} call main_#t~mem11 := read~int(main_~#sum~0.base, main_~#sum~0.offset, 8);__VERIFIER_assert_#in~cond := (if main_#t~mem11 <= ~N~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {150#false} is VALID [2020-07-28 14:54:09,043 INFO L280 TraceCheckUtils]: 13: Hoare triple {150#false} assume 0 == __VERIFIER_assert_~cond; {150#false} is VALID [2020-07-28 14:54:09,044 INFO L280 TraceCheckUtils]: 14: Hoare triple {150#false} assume !false; {150#false} is VALID [2020-07-28 14:54:09,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 14:54:09,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693621768] [2020-07-28 14:54:09,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 14:54:09,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-28 14:54:09,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064077962] [2020-07-28 14:54:09,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-07-28 14:54:09,049 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 14:54:09,049 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-28 14:54:09,076 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:54:09,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-28 14:54:09,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 14:54:09,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-28 14:54:09,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-28 14:54:09,077 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 4 states. [2020-07-28 14:54:09,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:54:09,239 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2020-07-28 14:54:09,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-28 14:54:09,240 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-07-28 14:54:09,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 14:54:09,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 14:54:09,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 50 transitions. [2020-07-28 14:54:09,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 14:54:09,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 50 transitions. [2020-07-28 14:54:09,245 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 50 transitions. [2020-07-28 14:54:09,316 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 50 edges. 50 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 14:54:09,318 INFO L225 Difference]: With dead ends: 41 [2020-07-28 14:54:09,318 INFO L226 Difference]: Without dead ends: 28 [2020-07-28 14:54:09,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-28 14:54:09,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-28 14:54:09,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2020-07-28 14:54:09,335 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 14:54:09,335 INFO L82 GeneralOperation]: Start isEquivalent. First operand 28 states. Second operand 24 states. [2020-07-28 14:54:09,335 INFO L74 IsIncluded]: Start isIncluded. First operand 28 states. Second operand 24 states. [2020-07-28 14:54:09,336 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 24 states. [2020-07-28 14:54:09,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:54:09,338 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-07-28 14:54:09,338 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-07-28 14:54:09,339 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:54:09,339 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:54:09,340 INFO L74 IsIncluded]: Start isIncluded. First operand 24 states. Second operand 28 states. [2020-07-28 14:54:09,340 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 28 states. [2020-07-28 14:54:09,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 14:54:09,343 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-07-28 14:54:09,343 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-07-28 14:54:09,344 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 14:54:09,344 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 14:54:09,344 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 14:54:09,345 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 14:54:09,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-28 14:54:09,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-07-28 14:54:09,347 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2020-07-28 14:54:09,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 14:54:09,348 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-07-28 14:54:09,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-28 14:54:09,348 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-07-28 14:54:09,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-28 14:54:09,349 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 14:54:09,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 14:54:09,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-28 14:54:09,350 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 14:54:09,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 14:54:09,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1401448688, now seen corresponding path program 1 times [2020-07-28 14:54:09,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 14:54:09,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347904969] [2020-07-28 14:54:09,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 14:54:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 14:54:09,451 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 14:54:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 14:54:09,499 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 14:54:09,526 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 14:54:09,527 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 14:54:09,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-28 14:54:09,576 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 14:54:09,577 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 14:54:09,577 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-28 14:54:09,577 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-28 14:54:09,577 WARN L170 areAnnotationChecker]: L52 has no Hoare annotation [2020-07-28 14:54:09,578 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-28 14:54:09,578 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2020-07-28 14:54:09,578 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 14:54:09,578 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2020-07-28 14:54:09,579 WARN L170 areAnnotationChecker]: L31-3 has no Hoare annotation [2020-07-28 14:54:09,579 WARN L170 areAnnotationChecker]: L31-3 has no Hoare annotation [2020-07-28 14:54:09,579 WARN L170 areAnnotationChecker]: L31-3 has no Hoare annotation [2020-07-28 14:54:09,579 WARN L170 areAnnotationChecker]: L31-4 has no Hoare annotation [2020-07-28 14:54:09,579 WARN L170 areAnnotationChecker]: L31-2 has no Hoare annotation [2020-07-28 14:54:09,580 WARN L170 areAnnotationChecker]: L36-3 has no Hoare annotation [2020-07-28 14:54:09,580 WARN L170 areAnnotationChecker]: L36-3 has no Hoare annotation [2020-07-28 14:54:09,580 WARN L170 areAnnotationChecker]: L36-3 has no Hoare annotation [2020-07-28 14:54:09,580 WARN L170 areAnnotationChecker]: L36-4 has no Hoare annotation [2020-07-28 14:54:09,581 WARN L170 areAnnotationChecker]: L36-2 has no Hoare annotation [2020-07-28 14:54:09,581 WARN L170 areAnnotationChecker]: L41-3 has no Hoare annotation [2020-07-28 14:54:09,581 WARN L170 areAnnotationChecker]: L41-3 has no Hoare annotation [2020-07-28 14:54:09,581 WARN L170 areAnnotationChecker]: L41-3 has no Hoare annotation [2020-07-28 14:54:09,582 WARN L170 areAnnotationChecker]: L41-4 has no Hoare annotation [2020-07-28 14:54:09,582 WARN L170 areAnnotationChecker]: L41-2 has no Hoare annotation [2020-07-28 14:54:09,582 WARN L170 areAnnotationChecker]: L46-3 has no Hoare annotation [2020-07-28 14:54:09,582 WARN L170 areAnnotationChecker]: L46-3 has no Hoare annotation [2020-07-28 14:54:09,582 WARN L170 areAnnotationChecker]: L46-3 has no Hoare annotation [2020-07-28 14:54:09,583 WARN L170 areAnnotationChecker]: L46-4 has no Hoare annotation [2020-07-28 14:54:09,583 WARN L170 areAnnotationChecker]: L46-2 has no Hoare annotation [2020-07-28 14:54:09,583 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-28 14:54:09,583 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-28 14:54:09,584 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2020-07-28 14:54:09,584 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2020-07-28 14:54:09,584 WARN L170 areAnnotationChecker]: L13-3 has no Hoare annotation [2020-07-28 14:54:09,584 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 14:54:09,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 02:54:09 BoogieIcfgContainer [2020-07-28 14:54:09,587 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 14:54:09,588 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 14:54:09,588 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 14:54:09,588 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 14:54:09,589 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 02:54:08" (3/4) ... [2020-07-28 14:54:09,591 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-07-28 14:54:09,658 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 14:54:09,658 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 14:54:09,661 INFO L168 Benchmark]: Toolchain (without parser) took 2284.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 957.5 MB in the beginning and 1.0 GB in the end (delta: -43.4 MB). Peak memory consumption was 105.5 MB. Max. memory is 11.5 GB. [2020-07-28 14:54:09,662 INFO L168 Benchmark]: CDTParser took 0.75 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 14:54:09,663 INFO L168 Benchmark]: CACSL2BoogieTranslator took 424.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 957.5 MB in the beginning and 1.1 GB in the end (delta: -187.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. [2020-07-28 14:54:09,663 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2020-07-28 14:54:09,664 INFO L168 Benchmark]: Boogie Preprocessor took 36.00 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 14:54:09,665 INFO L168 Benchmark]: RCFGBuilder took 462.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 11.5 GB. [2020-07-28 14:54:09,665 INFO L168 Benchmark]: TraceAbstraction took 1213.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 100.0 MB). Peak memory consumption was 100.0 MB. Max. memory is 11.5 GB. [2020-07-28 14:54:09,666 INFO L168 Benchmark]: Witness Printer took 70.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2020-07-28 14:54:09,670 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.75 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 424.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 957.5 MB in the beginning and 1.1 GB in the end (delta: -187.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 68.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.00 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 462.97 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1213.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 100.0 MB). Peak memory consumption was 100.0 MB. Max. memory is 11.5 GB. * Witness Printer took 70.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L11] COND FALSE !(!cond) VAL [N=1] [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L28] int *b = malloc(sizeof(int)*N); [L30] sum[0] = 0 [L31] i=0 VAL [N=1] [L31] COND TRUE i