./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/eqn3f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/eqn3f.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 3c4f39de7d4cdbe0c9103e2c499bf48f3ddaeb30 ................................................................................................................................................................................................................................................................................................................. 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 0.2.1-dev-20ed64e [2021-08-25 19:05:03,456 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-25 19:05:03,459 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-25 19:05:03,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-25 19:05:03,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-25 19:05:03,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-25 19:05:03,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-25 19:05:03,500 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-25 19:05:03,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-25 19:05:03,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-25 19:05:03,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-25 19:05:03,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-25 19:05:03,505 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-25 19:05:03,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-25 19:05:03,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-25 19:05:03,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-25 19:05:03,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-25 19:05:03,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-25 19:05:03,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-25 19:05:03,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-25 19:05:03,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-25 19:05:03,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-25 19:05:03,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-25 19:05:03,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-25 19:05:03,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-25 19:05:03,521 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-25 19:05:03,521 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-25 19:05:03,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-25 19:05:03,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-25 19:05:03,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-25 19:05:03,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-25 19:05:03,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-25 19:05:03,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-25 19:05:03,526 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-25 19:05:03,527 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-25 19:05:03,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-25 19:05:03,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-25 19:05:03,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-25 19:05:03,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-25 19:05:03,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-25 19:05:03,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-25 19:05:03,531 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-25 19:05:03,555 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-25 19:05:03,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-25 19:05:03,560 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-25 19:05:03,560 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-25 19:05:03,561 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-25 19:05:03,564 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-25 19:05:03,564 INFO L138 SettingsManager]: * Use SBE=true [2021-08-25 19:05:03,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-25 19:05:03,564 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-25 19:05:03,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-25 19:05:03,565 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-25 19:05:03,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-25 19:05:03,566 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-25 19:05:03,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-25 19:05:03,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-25 19:05:03,567 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-25 19:05:03,567 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-25 19:05:03,567 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-25 19:05:03,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-25 19:05:03,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-25 19:05:03,567 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-25 19:05:03,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-25 19:05:03,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 19:05:03,568 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-25 19:05:03,568 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-25 19:05:03,568 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-25 19:05:03,569 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-25 19:05:03,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-25 19:05:03,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-25 19:05:03,569 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-25 19:05:03,569 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c4f39de7d4cdbe0c9103e2c499bf48f3ddaeb30 [2021-08-25 19:05:03,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-25 19:05:03,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-25 19:05:03,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-25 19:05:03,912 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-25 19:05:03,913 INFO L275 PluginConnector]: CDTParser initialized [2021-08-25 19:05:03,914 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/eqn3f.c [2021-08-25 19:05:03,977 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f926fd72/78c2d12f93614ad48ec6954a48c155ab/FLAG1319c181c [2021-08-25 19:05:04,480 INFO L306 CDTParser]: Found 1 translation units. [2021-08-25 19:05:04,482 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/eqn3f.c [2021-08-25 19:05:04,489 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f926fd72/78c2d12f93614ad48ec6954a48c155ab/FLAG1319c181c [2021-08-25 19:05:04,949 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f926fd72/78c2d12f93614ad48ec6954a48c155ab [2021-08-25 19:05:04,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-25 19:05:04,955 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-25 19:05:04,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-25 19:05:04,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-25 19:05:04,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-25 19:05:04,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:05:04" (1/1) ... [2021-08-25 19:05:04,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aa8b64e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:05:04, skipping insertion in model container [2021-08-25 19:05:04,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:05:04" (1/1) ... [2021-08-25 19:05:04,968 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-25 19:05:04,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-25 19:05:05,115 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/eqn3f.c[588,601] [2021-08-25 19:05:05,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 19:05:05,142 INFO L203 MainTranslator]: Completed pre-run [2021-08-25 19:05:05,178 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/eqn3f.c[588,601] [2021-08-25 19:05:05,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 19:05:05,213 INFO L208 MainTranslator]: Completed translation [2021-08-25 19:05:05,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:05:05 WrapperNode [2021-08-25 19:05:05,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-25 19:05:05,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-25 19:05:05,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-25 19:05:05,218 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-25 19:05:05,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:05:05" (1/1) ... [2021-08-25 19:05:05,237 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:05:05" (1/1) ... [2021-08-25 19:05:05,260 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-25 19:05:05,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-25 19:05:05,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-25 19:05:05,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-25 19:05:05,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:05:05" (1/1) ... [2021-08-25 19:05:05,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:05:05" (1/1) ... [2021-08-25 19:05:05,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:05:05" (1/1) ... [2021-08-25 19:05:05,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:05:05" (1/1) ... [2021-08-25 19:05:05,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:05:05" (1/1) ... [2021-08-25 19:05:05,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:05:05" (1/1) ... [2021-08-25 19:05:05,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:05:05" (1/1) ... [2021-08-25 19:05:05,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-25 19:05:05,306 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-25 19:05:05,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-25 19:05:05,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-25 19:05:05,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:05:05" (1/1) ... [2021-08-25 19:05:05,314 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 19:05:05,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 19:05:05,342 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-25 19:05:05,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-25 19:05:05,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-25 19:05:05,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-25 19:05:05,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-25 19:05:05,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-25 19:05:05,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-25 19:05:05,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-25 19:05:05,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-25 19:05:05,724 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-25 19:05:05,725 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-08-25 19:05:05,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:05:05 BoogieIcfgContainer [2021-08-25 19:05:05,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-25 19:05:05,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-25 19:05:05,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-25 19:05:05,730 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-25 19:05:05,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 07:05:04" (1/3) ... [2021-08-25 19:05:05,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313f0804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:05:05, skipping insertion in model container [2021-08-25 19:05:05,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:05:05" (2/3) ... [2021-08-25 19:05:05,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313f0804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:05:05, skipping insertion in model container [2021-08-25 19:05:05,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:05:05" (3/3) ... [2021-08-25 19:05:05,732 INFO L111 eAbstractionObserver]: Analyzing ICFG eqn3f.c [2021-08-25 19:05:05,747 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-25 19:05:05,748 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-25 19:05:05,791 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-25 19:05:05,797 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-25 19:05:05,797 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-25 19:05:05,808 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 19:05:05,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-25 19:05:05,813 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 19:05:05,813 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 19:05:05,814 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 19:05:05,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 19:05:05,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1828546148, now seen corresponding path program 1 times [2021-08-25 19:05:05,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 19:05:05,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450571393] [2021-08-25 19:05:05,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 19:05:05,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 19:05:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 19:05:05,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 19:05:05,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 19:05:05,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450571393] [2021-08-25 19:05:05,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450571393] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 19:05:05,943 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 19:05:05,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-25 19:05:05,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576979015] [2021-08-25 19:05:05,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-25 19:05:05,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 19:05:05,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-25 19:05:05,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-25 19:05:05,961 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 19:05:05,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 19:05:05,984 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2021-08-25 19:05:05,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-25 19:05:05,986 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-08-25 19:05:05,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 19:05:05,992 INFO L225 Difference]: With dead ends: 38 [2021-08-25 19:05:05,992 INFO L226 Difference]: Without dead ends: 17 [2021-08-25 19:05:05,994 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-25 19:05:06,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-08-25 19:05:06,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-08-25 19:05:06,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 19:05:06,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-08-25 19:05:06,018 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2021-08-25 19:05:06,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 19:05:06,019 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-08-25 19:05:06,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 19:05:06,019 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-08-25 19:05:06,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-25 19:05:06,020 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 19:05:06,020 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 19:05:06,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-25 19:05:06,021 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 19:05:06,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 19:05:06,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1148487778, now seen corresponding path program 1 times [2021-08-25 19:05:06,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 19:05:06,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605551739] [2021-08-25 19:05:06,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 19:05:06,026 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 19:05:06,057 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-25 19:05:06,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1253324059] [2021-08-25 19:05:06,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 19:05:06,058 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 19:05:06,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 19:05:06,060 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-25 19:05:06,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-25 19:05:06,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 19:05:06,133 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-25 19:05:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 19:05:06,180 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-25 19:05:06,180 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-25 19:05:06,182 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 19:05:06,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-25 19:05:06,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 19:05:06,399 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-25 19:05:06,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 07:05:06 BoogieIcfgContainer [2021-08-25 19:05:06,433 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-25 19:05:06,435 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-25 19:05:06,435 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-25 19:05:06,435 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-25 19:05:06,436 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:05:05" (3/4) ... [2021-08-25 19:05:06,437 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-25 19:05:06,480 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-25 19:05:06,480 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-25 19:05:06,482 INFO L168 Benchmark]: Toolchain (without parser) took 1526.53 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 29.8 MB in the beginning and 43.7 MB in the end (delta: -13.9 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2021-08-25 19:05:06,483 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 52.4 MB. Free memory was 35.1 MB in the beginning and 35.1 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 19:05:06,483 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.70 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 29.5 MB in the beginning and 46.4 MB in the end (delta: -16.9 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2021-08-25 19:05:06,484 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.35 ms. Allocated memory is still 62.9 MB. Free memory was 46.4 MB in the beginning and 44.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 19:05:06,484 INFO L168 Benchmark]: Boogie Preprocessor took 42.27 ms. Allocated memory is still 62.9 MB. Free memory was 44.8 MB in the beginning and 43.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 19:05:06,485 INFO L168 Benchmark]: RCFGBuilder took 420.85 ms. Allocated memory is still 62.9 MB. Free memory was 43.6 MB in the beginning and 43.8 MB in the end (delta: -296.4 kB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2021-08-25 19:05:06,485 INFO L168 Benchmark]: TraceAbstraction took 706.09 ms. Allocated memory is still 62.9 MB. Free memory was 43.4 MB in the beginning and 27.0 MB in the end (delta: 16.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 16.1 GB. [2021-08-25 19:05:06,485 INFO L168 Benchmark]: Witness Printer took 45.05 ms. Allocated memory is still 62.9 MB. Free memory was 27.0 MB in the beginning and 43.7 MB in the end (delta: -16.7 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2021-08-25 19:05:06,488 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 52.4 MB. Free memory was 35.1 MB in the beginning and 35.1 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 259.70 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 29.5 MB in the beginning and 46.4 MB in the end (delta: -16.9 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.35 ms. Allocated memory is still 62.9 MB. Free memory was 46.4 MB in the beginning and 44.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.27 ms. Allocated memory is still 62.9 MB. Free memory was 44.8 MB in the beginning and 43.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 420.85 ms. Allocated memory is still 62.9 MB. Free memory was 43.6 MB in the beginning and 43.8 MB in the end (delta: -296.4 kB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 706.09 ms. Allocated memory is still 62.9 MB. Free memory was 43.4 MB in the beginning and 27.0 MB in the end (delta: 16.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 16.1 GB. * Witness Printer took 45.05 ms. Allocated memory is still 62.9 MB. Free memory was 27.0 MB in the beginning and 43.7 MB in the end (delta: -16.7 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) VAL [N=1] [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] a[0] = 6 [L32] b[0] = 10 [L34] i=1 VAL [N=1] [L34] COND FALSE !(i