./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/sum_array-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops/sum_array-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 729bcf7bc8da07a9502e2c955dd21c14a257521f .................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 22:17:33,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 22:17:33,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 22:17:33,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 22:17:33,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 22:17:33,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 22:17:33,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 22:17:33,974 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 22:17:33,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 22:17:33,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 22:17:33,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 22:17:33,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 22:17:33,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 22:17:33,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 22:17:33,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 22:17:33,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 22:17:34,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 22:17:34,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 22:17:34,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 22:17:34,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 22:17:34,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 22:17:34,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 22:17:34,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 22:17:34,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 22:17:34,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 22:17:34,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 22:17:34,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 22:17:34,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 22:17:34,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 22:17:34,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 22:17:34,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 22:17:34,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 22:17:34,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 22:17:34,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 22:17:34,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 22:17:34,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 22:17:34,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 22:17:34,051 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 22:17:34,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 22:17:34,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 22:17:34,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 22:17:34,056 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 22:17:34,114 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 22:17:34,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 22:17:34,118 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 22:17:34,118 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 22:17:34,119 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 22:17:34,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 22:17:34,119 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 22:17:34,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 22:17:34,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 22:17:34,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 22:17:34,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 22:17:34,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 22:17:34,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 22:17:34,122 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 22:17:34,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 22:17:34,123 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 22:17:34,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 22:17:34,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 22:17:34,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 22:17:34,124 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 22:17:34,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 22:17:34,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 22:17:34,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 22:17:34,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 22:17:34,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 22:17:34,126 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 22:17:34,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 22:17:34,126 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 22:17:34,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 22:17:34,127 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 729bcf7bc8da07a9502e2c955dd21c14a257521f [2020-10-25 22:17:34,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 22:17:34,628 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 22:17:34,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 22:17:34,633 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 22:17:34,634 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 22:17:34,635 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/sum_array-1.c [2020-10-25 22:17:34,712 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1ce0c771/e9a26f71d9e14e03b57b2eadbc737e18/FLAG53f98b18a [2020-10-25 22:17:35,360 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 22:17:35,360 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/sum_array-1.c [2020-10-25 22:17:35,368 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1ce0c771/e9a26f71d9e14e03b57b2eadbc737e18/FLAG53f98b18a [2020-10-25 22:17:35,746 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1ce0c771/e9a26f71d9e14e03b57b2eadbc737e18 [2020-10-25 22:17:35,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 22:17:35,760 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 22:17:35,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 22:17:35,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 22:17:35,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 22:17:35,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:17:35" (1/1) ... [2020-10-25 22:17:35,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@638b5637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:35, skipping insertion in model container [2020-10-25 22:17:35,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 10:17:35" (1/1) ... [2020-10-25 22:17:35,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 22:17:35,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 22:17:36,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:17:36,035 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 22:17:36,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 22:17:36,171 INFO L208 MainTranslator]: Completed translation [2020-10-25 22:17:36,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:36 WrapperNode [2020-10-25 22:17:36,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 22:17:36,174 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 22:17:36,175 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 22:17:36,175 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 22:17:36,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:36" (1/1) ... [2020-10-25 22:17:36,195 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:36" (1/1) ... [2020-10-25 22:17:36,222 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 22:17:36,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 22:17:36,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 22:17:36,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 22:17:36,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:36" (1/1) ... [2020-10-25 22:17:36,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:36" (1/1) ... [2020-10-25 22:17:36,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:36" (1/1) ... [2020-10-25 22:17:36,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:36" (1/1) ... [2020-10-25 22:17:36,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:36" (1/1) ... [2020-10-25 22:17:36,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:36" (1/1) ... [2020-10-25 22:17:36,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:36" (1/1) ... [2020-10-25 22:17:36,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 22:17:36,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 22:17:36,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 22:17:36,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 22:17:36,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:36" (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 [2020-10-25 22:17:36,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 22:17:36,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 22:17:36,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 22:17:36,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 22:17:36,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 22:17:36,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 22:17:36,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 22:17:36,808 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 22:17:36,809 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-25 22:17:36,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:17:36 BoogieIcfgContainer [2020-10-25 22:17:36,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 22:17:36,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 22:17:36,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 22:17:36,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 22:17:36,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 10:17:35" (1/3) ... [2020-10-25 22:17:36,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@587444bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:17:36, skipping insertion in model container [2020-10-25 22:17:36,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 10:17:36" (2/3) ... [2020-10-25 22:17:36,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@587444bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 10:17:36, skipping insertion in model container [2020-10-25 22:17:36,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:17:36" (3/3) ... [2020-10-25 22:17:36,825 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_array-1.c [2020-10-25 22:17:36,842 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 22:17:36,855 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 22:17:36,875 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 22:17:36,905 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 22:17:36,905 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 22:17:36,905 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 22:17:36,905 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 22:17:36,906 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 22:17:36,906 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 22:17:36,906 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 22:17:36,906 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 22:17:36,922 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-10-25 22:17:36,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-25 22:17:36,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:17:36,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:17:36,929 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:17:36,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:17:36,937 INFO L82 PathProgramCache]: Analyzing trace with hash -779788197, now seen corresponding path program 1 times [2020-10-25 22:17:36,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:17:36,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230733523] [2020-10-25 22:17:36,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:17:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 22:17:37,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 22:17:37,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230733523] [2020-10-25 22:17:37,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 22:17:37,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-25 22:17:37,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749696589] [2020-10-25 22:17:37,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 22:17:37,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 22:17:37,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 22:17:37,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:17:37,323 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2020-10-25 22:17:37,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 22:17:37,483 INFO L93 Difference]: Finished difference Result 61 states and 89 transitions. [2020-10-25 22:17:37,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 22:17:37,486 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-25 22:17:37,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 22:17:37,496 INFO L225 Difference]: With dead ends: 61 [2020-10-25 22:17:37,497 INFO L226 Difference]: Without dead ends: 29 [2020-10-25 22:17:37,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-25 22:17:37,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-25 22:17:37,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2020-10-25 22:17:37,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-25 22:17:37,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-10-25 22:17:37,543 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 11 [2020-10-25 22:17:37,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 22:17:37,543 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-10-25 22:17:37,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 22:17:37,544 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-10-25 22:17:37,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-25 22:17:37,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 22:17:37,545 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 22:17:37,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 22:17:37,546 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 22:17:37,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 22:17:37,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1602849365, now seen corresponding path program 1 times [2020-10-25 22:17:37,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 22:17:37,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740039257] [2020-10-25 22:17:37,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 22:17:37,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:17:37,636 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:17:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 22:17:37,714 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 22:17:37,743 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 22:17:37,744 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 22:17:37,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 22:17:37,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 10:17:37 BoogieIcfgContainer [2020-10-25 22:17:37,786 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 22:17:37,787 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 22:17:37,787 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 22:17:37,787 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 22:17:37,788 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 10:17:36" (3/4) ... [2020-10-25 22:17:37,791 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 22:17:37,873 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 22:17:37,873 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 22:17:37,876 INFO L168 Benchmark]: Toolchain (without parser) took 2121.20 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 37.8 MB in the beginning and 47.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. [2020-10-25 22:17:37,878 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 46.1 MB. Free memory was 27.7 MB in the beginning and 27.7 MB in the end (delta: 27.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:17:37,879 INFO L168 Benchmark]: CACSL2BoogieTranslator took 408.40 ms. Allocated memory is still 60.8 MB. Free memory was 37.1 MB in the beginning and 44.6 MB in the end (delta: -7.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-10-25 22:17:37,880 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.06 ms. Allocated memory is still 60.8 MB. Free memory was 44.4 MB in the beginning and 42.7 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:17:37,880 INFO L168 Benchmark]: Boogie Preprocessor took 34.19 ms. Allocated memory is still 60.8 MB. Free memory was 42.7 MB in the beginning and 41.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 22:17:37,881 INFO L168 Benchmark]: RCFGBuilder took 551.00 ms. Allocated memory is still 60.8 MB. Free memory was 41.5 MB in the beginning and 44.0 MB in the end (delta: -2.5 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. [2020-10-25 22:17:37,886 INFO L168 Benchmark]: TraceAbstraction took 970.99 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 43.5 MB in the beginning and 50.1 MB in the end (delta: -6.6 MB). Peak memory consumption was 23.7 MB. Max. memory is 16.1 GB. [2020-10-25 22:17:37,891 INFO L168 Benchmark]: Witness Printer took 86.46 ms. Allocated memory is still 73.4 MB. Free memory was 50.1 MB in the beginning and 47.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 22:17:37,898 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 46.1 MB. Free memory was 27.7 MB in the beginning and 27.7 MB in the end (delta: 27.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 408.40 ms. Allocated memory is still 60.8 MB. Free memory was 37.1 MB in the beginning and 44.6 MB in the end (delta: -7.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.06 ms. Allocated memory is still 60.8 MB. Free memory was 44.4 MB in the beginning and 42.7 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.19 ms. Allocated memory is still 60.8 MB. Free memory was 42.7 MB in the beginning and 41.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 551.00 ms. Allocated memory is still 60.8 MB. Free memory was 41.5 MB in the beginning and 44.0 MB in the end (delta: -2.5 MB). Peak memory consumption was 20.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 970.99 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 43.5 MB in the beginning and 50.1 MB in the end (delta: -6.6 MB). Peak memory consumption was 23.7 MB. Max. memory is 16.1 GB. * Witness Printer took 86.46 ms. Allocated memory is still 73.4 MB. Free memory was 50.1 MB in the beginning and 47.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L16] unsigned int M = __VERIFIER_nondet_uint(); [L17] int A[M], B[M], C[M]; [L18] unsigned int i; [L20] i=0 [L20] COND TRUE i