./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/sqm-iff.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/sqm-iff.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 1a5bf013e0e121d7379402f0bf74321ad24fd8fa ..................................................................................................................................................................................................................................................................................................................................................................... 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 19:46:30,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-25 19:46:30,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-25 19:46:30,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-25 19:46:30,348 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-25 19:46:30,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-25 19:46:30,353 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-25 19:46:30,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-25 19:46:30,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-25 19:46:30,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-25 19:46:30,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-25 19:46:30,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-25 19:46:30,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-25 19:46:30,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-25 19:46:30,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-25 19:46:30,381 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-25 19:46:30,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-25 19:46:30,383 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-25 19:46:30,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-25 19:46:30,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-25 19:46:30,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-25 19:46:30,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-25 19:46:30,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-25 19:46:30,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-25 19:46:30,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-25 19:46:30,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-25 19:46:30,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-25 19:46:30,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-25 19:46:30,393 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-25 19:46:30,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-25 19:46:30,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-25 19:46:30,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-25 19:46:30,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-25 19:46:30,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-25 19:46:30,398 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-25 19:46:30,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-25 19:46:30,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-25 19:46:30,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-25 19:46:30,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-25 19:46:30,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-25 19:46:30,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-25 19:46:30,401 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-25 19:46:30,422 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-25 19:46:30,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-25 19:46:30,423 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-25 19:46:30,423 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-25 19:46:30,424 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-25 19:46:30,424 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-25 19:46:30,425 INFO L138 SettingsManager]: * Use SBE=true [2021-08-25 19:46:30,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-25 19:46:30,425 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-25 19:46:30,425 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-25 19:46:30,425 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-25 19:46:30,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-25 19:46:30,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-25 19:46:30,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-25 19:46:30,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-25 19:46:30,426 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-25 19:46:30,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-25 19:46:30,427 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-25 19:46:30,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-25 19:46:30,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-25 19:46:30,427 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-25 19:46:30,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-25 19:46:30,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 19:46:30,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-25 19:46:30,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-25 19:46:30,429 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-25 19:46:30,429 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-25 19:46:30,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-25 19:46:30,429 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-25 19:46:30,429 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-25 19:46:30,430 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a5bf013e0e121d7379402f0bf74321ad24fd8fa [2021-08-25 19:46:30,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-25 19:46:30,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-25 19:46:30,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-25 19:46:30,749 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-25 19:46:30,750 INFO L275 PluginConnector]: CDTParser initialized [2021-08-25 19:46:30,751 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/sqm-iff.c [2021-08-25 19:46:30,809 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82aad6e85/9652d3b505484b0f92875e92c23a6cc2/FLAG318f5a9d8 [2021-08-25 19:46:31,261 INFO L306 CDTParser]: Found 1 translation units. [2021-08-25 19:46:31,262 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/sqm-iff.c [2021-08-25 19:46:31,273 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82aad6e85/9652d3b505484b0f92875e92c23a6cc2/FLAG318f5a9d8 [2021-08-25 19:46:31,291 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82aad6e85/9652d3b505484b0f92875e92c23a6cc2 [2021-08-25 19:46:31,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-25 19:46:31,300 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-25 19:46:31,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-25 19:46:31,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-25 19:46:31,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-25 19:46:31,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:46:31" (1/1) ... [2021-08-25 19:46:31,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e2fa187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:46:31, skipping insertion in model container [2021-08-25 19:46:31,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:46:31" (1/1) ... [2021-08-25 19:46:31,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-25 19:46:31,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-25 19:46:31,436 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/sqm-iff.c[590,603] [2021-08-25 19:46:31,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 19:46:31,455 INFO L203 MainTranslator]: Completed pre-run [2021-08-25 19:46:31,465 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/sqm-iff.c[590,603] [2021-08-25 19:46:31,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 19:46:31,523 INFO L208 MainTranslator]: Completed translation [2021-08-25 19:46:31,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:46:31 WrapperNode [2021-08-25 19:46:31,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-25 19:46:31,526 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-25 19:46:31,527 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-25 19:46:31,527 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-25 19:46:31,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:46:31" (1/1) ... [2021-08-25 19:46:31,541 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:46:31" (1/1) ... [2021-08-25 19:46:31,557 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-25 19:46:31,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-25 19:46:31,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-25 19:46:31,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-25 19:46:31,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:46:31" (1/1) ... [2021-08-25 19:46:31,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:46:31" (1/1) ... [2021-08-25 19:46:31,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:46:31" (1/1) ... [2021-08-25 19:46:31,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:46:31" (1/1) ... [2021-08-25 19:46:31,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:46:31" (1/1) ... [2021-08-25 19:46:31,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:46:31" (1/1) ... [2021-08-25 19:46:31,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:46:31" (1/1) ... [2021-08-25 19:46:31,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-25 19:46:31,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-25 19:46:31,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-25 19:46:31,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-25 19:46:31,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:46:31" (1/1) ... [2021-08-25 19:46:31,585 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 19:46:31,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 19:46:31,601 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 19:46:31,624 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 19:46:31,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-25 19:46:31,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-25 19:46:31,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-25 19:46:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-25 19:46:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-25 19:46:31,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-25 19:46:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-25 19:46:31,972 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-25 19:46:31,972 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-08-25 19:46:31,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:46:31 BoogieIcfgContainer [2021-08-25 19:46:31,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-25 19:46:31,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-25 19:46:31,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-25 19:46:31,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-25 19:46:31,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 07:46:31" (1/3) ... [2021-08-25 19:46:31,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ebc74d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:46:31, skipping insertion in model container [2021-08-25 19:46:31,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:46:31" (2/3) ... [2021-08-25 19:46:31,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ebc74d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:46:31, skipping insertion in model container [2021-08-25 19:46:31,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:46:31" (3/3) ... [2021-08-25 19:46:31,989 INFO L111 eAbstractionObserver]: Analyzing ICFG sqm-iff.c [2021-08-25 19:46:31,992 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-25 19:46:31,992 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-25 19:46:32,033 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-25 19:46:32,039 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 19:46:32,040 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-25 19:46:32,051 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 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 19:46:32,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-25 19:46:32,055 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 19:46:32,055 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 19:46:32,056 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 19:46:32,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 19:46:32,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1670316217, now seen corresponding path program 1 times [2021-08-25 19:46:32,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 19:46:32,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992499998] [2021-08-25 19:46:32,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 19:46:32,068 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 19:46:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 19:46:32,223 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 19:46:32,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 19:46:32,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992499998] [2021-08-25 19:46:32,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992499998] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 19:46:32,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 19:46:32,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-25 19:46:32,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241483129] [2021-08-25 19:46:32,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-25 19:46:32,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 19:46:32,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-25 19:46:32,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-25 19:46:32,260 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 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 19:46:32,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 19:46:32,274 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2021-08-25 19:46:32,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-25 19:46:32,276 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 19:46:32,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 19:46:32,282 INFO L225 Difference]: With dead ends: 42 [2021-08-25 19:46:32,282 INFO L226 Difference]: Without dead ends: 19 [2021-08-25 19:46:32,285 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 19:46:32,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-08-25 19:46:32,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-08-25 19:46:32,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 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 19:46:32,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-08-25 19:46:32,312 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2021-08-25 19:46:32,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 19:46:32,312 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-08-25 19:46:32,313 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 19:46:32,313 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-08-25 19:46:32,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-25 19:46:32,313 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 19:46:32,314 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 19:46:32,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-25 19:46:32,315 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 19:46:32,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 19:46:32,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1000416578, now seen corresponding path program 1 times [2021-08-25 19:46:32,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 19:46:32,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080826260] [2021-08-25 19:46:32,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 19:46:32,320 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 19:46:32,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 19:46:32,425 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 19:46:32,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 19:46:32,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080826260] [2021-08-25 19:46:32,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080826260] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 19:46:32,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 19:46:32,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-25 19:46:32,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970723556] [2021-08-25 19:46:32,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-25 19:46:32,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 19:46:32,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-25 19:46:32,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-25 19:46:32,431 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 19:46:32,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 19:46:32,511 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2021-08-25 19:46:32,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-25 19:46:32,512 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 19:46:32,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 19:46:32,513 INFO L225 Difference]: With dead ends: 45 [2021-08-25 19:46:32,513 INFO L226 Difference]: Without dead ends: 31 [2021-08-25 19:46:32,514 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-25 19:46:32,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-08-25 19:46:32,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2021-08-25 19:46:32,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 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 19:46:32,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-08-25 19:46:32,518 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2021-08-25 19:46:32,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 19:46:32,519 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-08-25 19:46:32,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 19:46:32,519 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-08-25 19:46:32,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-25 19:46:32,520 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 19:46:32,520 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 19:46:32,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-25 19:46:32,520 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 19:46:32,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 19:46:32,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1992201947, now seen corresponding path program 1 times [2021-08-25 19:46:32,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 19:46:32,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104841753] [2021-08-25 19:46:32,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 19:46:32,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 19:46:32,538 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-25 19:46:32,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2090721558] [2021-08-25 19:46:32,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 19:46:32,539 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 19:46:32,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 19:46:32,540 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 19:46:32,541 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 19:46:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 19:46:32,624 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-25 19:46:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 19:46:32,685 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-25 19:46:32,685 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-25 19:46:32,686 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 19:46:32,709 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 19:46:32,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 19:46:32,892 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-25 19:46:32,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 07:46:32 BoogieIcfgContainer [2021-08-25 19:46:32,913 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-25 19:46:32,913 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-25 19:46:32,913 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-25 19:46:32,913 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-25 19:46:32,914 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:46:31" (3/4) ... [2021-08-25 19:46:32,915 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-25 19:46:32,961 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-25 19:46:32,961 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-25 19:46:32,962 INFO L168 Benchmark]: Toolchain (without parser) took 1661.72 ms. Allocated memory was 54.5 MB in the beginning and 86.0 MB in the end (delta: 31.5 MB). Free memory was 31.9 MB in the beginning and 49.0 MB in the end (delta: -17.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2021-08-25 19:46:32,963 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 54.5 MB. Free memory was 36.3 MB in the beginning and 36.2 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 19:46:32,963 INFO L168 Benchmark]: CACSL2BoogieTranslator took 223.96 ms. Allocated memory was 54.5 MB in the beginning and 86.0 MB in the end (delta: 31.5 MB). Free memory was 31.7 MB in the beginning and 70.1 MB in the end (delta: -38.4 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2021-08-25 19:46:32,964 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.02 ms. Allocated memory is still 86.0 MB. Free memory was 70.1 MB in the beginning and 68.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 19:46:32,964 INFO L168 Benchmark]: Boogie Preprocessor took 19.78 ms. Allocated memory is still 86.0 MB. Free memory was 68.5 MB in the beginning and 67.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 19:46:32,965 INFO L168 Benchmark]: RCFGBuilder took 395.54 ms. Allocated memory is still 86.0 MB. Free memory was 67.2 MB in the beginning and 51.5 MB in the end (delta: 15.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-08-25 19:46:32,965 INFO L168 Benchmark]: TraceAbstraction took 937.79 ms. Allocated memory is still 86.0 MB. Free memory was 51.1 MB in the beginning and 51.6 MB in the end (delta: -578.8 kB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. [2021-08-25 19:46:32,966 INFO L168 Benchmark]: Witness Printer took 47.51 ms. Allocated memory is still 86.0 MB. Free memory was 51.1 MB in the beginning and 49.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-25 19:46:32,968 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 54.5 MB. Free memory was 36.3 MB in the beginning and 36.2 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 223.96 ms. Allocated memory was 54.5 MB in the beginning and 86.0 MB in the end (delta: 31.5 MB). Free memory was 31.7 MB in the beginning and 70.1 MB in the end (delta: -38.4 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.02 ms. Allocated memory is still 86.0 MB. Free memory was 70.1 MB in the beginning and 68.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.78 ms. Allocated memory is still 86.0 MB. Free memory was 68.5 MB in the beginning and 67.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 395.54 ms. Allocated memory is still 86.0 MB. Free memory was 67.2 MB in the beginning and 51.5 MB in the end (delta: 15.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 937.79 ms. Allocated memory is still 86.0 MB. Free memory was 51.1 MB in the beginning and 51.6 MB in the end (delta: -578.8 kB). Peak memory consumption was 2.3 MB. Max. memory is 16.1 GB. * Witness Printer took 47.51 ms. Allocated memory is still 86.0 MB. Free memory was 51.1 MB in the beginning and 49.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 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] i=0 VAL [N=1] [L31] COND TRUE i