./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 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_751edb47-9f0f-4eb8-9d98-8e32da48485b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_751edb47-9f0f-4eb8-9d98-8e32da48485b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_751edb47-9f0f-4eb8-9d98-8e32da48485b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_751edb47-9f0f-4eb8-9d98-8e32da48485b/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/sqm-iff.c -s /tmp/vcloud-vcloud-master/worker/run_dir_751edb47-9f0f-4eb8-9d98-8e32da48485b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_751edb47-9f0f-4eb8-9d98-8e32da48485b/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ea8e4699b666ed7abcb45752bfdbd03e9b20b89e ...................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 11:16:08,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 11:16:08,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 11:16:08,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 11:16:08,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 11:16:08,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 11:16:08,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 11:16:08,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 11:16:08,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 11:16:08,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 11:16:08,290 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 11:16:08,291 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 11:16:08,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 11:16:08,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 11:16:08,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 11:16:08,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 11:16:08,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 11:16:08,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 11:16:08,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 11:16:08,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 11:16:08,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 11:16:08,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 11:16:08,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 11:16:08,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 11:16:08,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 11:16:08,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 11:16:08,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 11:16:08,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 11:16:08,315 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 11:16:08,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 11:16:08,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 11:16:08,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 11:16:08,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 11:16:08,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 11:16:08,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 11:16:08,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 11:16:08,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 11:16:08,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 11:16:08,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 11:16:08,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 11:16:08,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 11:16:08,322 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_751edb47-9f0f-4eb8-9d98-8e32da48485b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 11:16:08,344 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 11:16:08,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 11:16:08,346 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 11:16:08,346 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 11:16:08,346 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 11:16:08,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 11:16:08,346 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 11:16:08,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 11:16:08,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 11:16:08,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 11:16:08,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 11:16:08,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 11:16:08,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 11:16:08,348 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 11:16:08,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 11:16:08,348 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 11:16:08,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 11:16:08,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 11:16:08,348 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 11:16:08,349 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 11:16:08,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 11:16:08,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 11:16:08,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 11:16:08,349 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 11:16:08,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 11:16:08,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 11:16:08,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 11:16:08,350 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 11:16:08,350 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_751edb47-9f0f-4eb8-9d98-8e32da48485b/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea8e4699b666ed7abcb45752bfdbd03e9b20b89e [2019-11-20 11:16:08,489 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 11:16:08,498 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 11:16:08,501 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 11:16:08,502 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 11:16:08,503 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 11:16:08,503 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_751edb47-9f0f-4eb8-9d98-8e32da48485b/bin/uautomizer/../../sv-benchmarks/c/array-fpi/sqm-iff.c [2019-11-20 11:16:08,563 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_751edb47-9f0f-4eb8-9d98-8e32da48485b/bin/uautomizer/data/a9f6b57dd/d31966100f1045aeb4e57471a14fc15b/FLAGf3dcf7b32 [2019-11-20 11:16:08,962 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 11:16:08,962 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_751edb47-9f0f-4eb8-9d98-8e32da48485b/sv-benchmarks/c/array-fpi/sqm-iff.c [2019-11-20 11:16:08,968 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_751edb47-9f0f-4eb8-9d98-8e32da48485b/bin/uautomizer/data/a9f6b57dd/d31966100f1045aeb4e57471a14fc15b/FLAGf3dcf7b32 [2019-11-20 11:16:08,982 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_751edb47-9f0f-4eb8-9d98-8e32da48485b/bin/uautomizer/data/a9f6b57dd/d31966100f1045aeb4e57471a14fc15b [2019-11-20 11:16:08,984 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 11:16:08,985 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 11:16:08,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 11:16:08,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 11:16:08,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 11:16:08,993 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:16:08" (1/1) ... [2019-11-20 11:16:08,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26e1d010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:08, skipping insertion in model container [2019-11-20 11:16:08,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:16:08" (1/1) ... [2019-11-20 11:16:09,001 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 11:16:09,021 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 11:16:09,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 11:16:09,334 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 11:16:09,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 11:16:09,383 INFO L192 MainTranslator]: Completed translation [2019-11-20 11:16:09,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:09 WrapperNode [2019-11-20 11:16:09,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 11:16:09,384 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 11:16:09,384 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 11:16:09,384 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 11:16:09,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:09" (1/1) ... [2019-11-20 11:16:09,398 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:09" (1/1) ... [2019-11-20 11:16:09,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 11:16:09,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 11:16:09,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 11:16:09,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 11:16:09,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:09" (1/1) ... [2019-11-20 11:16:09,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:09" (1/1) ... [2019-11-20 11:16:09,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:09" (1/1) ... [2019-11-20 11:16:09,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:09" (1/1) ... [2019-11-20 11:16:09,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:09" (1/1) ... [2019-11-20 11:16:09,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:09" (1/1) ... [2019-11-20 11:16:09,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:09" (1/1) ... [2019-11-20 11:16:09,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 11:16:09,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 11:16:09,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 11:16:09,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 11:16:09,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_751edb47-9f0f-4eb8-9d98-8e32da48485b/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 11:16:09,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-20 11:16:09,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 11:16:09,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 11:16:09,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 11:16:09,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-20 11:16:09,730 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 11:16:09,731 INFO L285 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-20 11:16:09,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:16:09 BoogieIcfgContainer [2019-11-20 11:16:09,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 11:16:09,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 11:16:09,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 11:16:09,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 11:16:09,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:16:08" (1/3) ... [2019-11-20 11:16:09,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38616a87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:16:09, skipping insertion in model container [2019-11-20 11:16:09,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:16:09" (2/3) ... [2019-11-20 11:16:09,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38616a87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:16:09, skipping insertion in model container [2019-11-20 11:16:09,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:16:09" (3/3) ... [2019-11-20 11:16:09,739 INFO L109 eAbstractionObserver]: Analyzing ICFG sqm-iff.c [2019-11-20 11:16:09,747 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 11:16:09,752 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 11:16:09,764 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 11:16:09,796 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 11:16:09,796 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 11:16:09,797 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 11:16:09,797 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 11:16:09,800 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 11:16:09,800 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 11:16:09,801 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 11:16:09,801 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 11:16:09,813 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-11-20 11:16:09,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 11:16:09,818 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:16:09,818 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:16:09,818 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 11:16:09,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:16:09,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1201566748, now seen corresponding path program 1 times [2019-11-20 11:16:09,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:16:09,829 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775132709] [2019-11-20 11:16:09,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:16:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:16:09,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:16:09,943 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775132709] [2019-11-20 11:16:09,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:16:09,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 11:16:09,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79455275] [2019-11-20 11:16:09,948 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 11:16:09,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 11:16:09,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 11:16:09,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 11:16:09,959 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-11-20 11:16:09,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:16:09,971 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2019-11-20 11:16:09,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 11:16:09,972 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-20 11:16:09,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:16:09,978 INFO L225 Difference]: With dead ends: 36 [2019-11-20 11:16:09,979 INFO L226 Difference]: Without dead ends: 17 [2019-11-20 11:16:09,981 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 11:16:09,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-20 11:16:10,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-20 11:16:10,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-20 11:16:10,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2019-11-20 11:16:10,003 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2019-11-20 11:16:10,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:16:10,003 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2019-11-20 11:16:10,003 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 11:16:10,004 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2019-11-20 11:16:10,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-20 11:16:10,004 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:16:10,004 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:16:10,005 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 11:16:10,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:16:10,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1920794649, now seen corresponding path program 1 times [2019-11-20 11:16:10,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:16:10,006 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083473013] [2019-11-20 11:16:10,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:16:10,021 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 11:16:10,021 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2051436431] [2019-11-20 11:16:10,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_751edb47-9f0f-4eb8-9d98-8e32da48485b/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 11:16:10,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:16:10,096 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 11:16:10,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:16:10,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 11:16:10,135 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083473013] [2019-11-20 11:16:10,135 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 11:16:10,135 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051436431] [2019-11-20 11:16:10,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:16:10,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 11:16:10,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285667641] [2019-11-20 11:16:10,137 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 11:16:10,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 11:16:10,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 11:16:10,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 11:16:10,138 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 3 states. [2019-11-20 11:16:10,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:16:10,195 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2019-11-20 11:16:10,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 11:16:10,196 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-11-20 11:16:10,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:16:10,196 INFO L225 Difference]: With dead ends: 31 [2019-11-20 11:16:10,196 INFO L226 Difference]: Without dead ends: 20 [2019-11-20 11:16:10,197 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 11:16:10,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-20 11:16:10,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2019-11-20 11:16:10,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-20 11:16:10,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2019-11-20 11:16:10,201 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 10 [2019-11-20 11:16:10,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:16:10,202 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-11-20 11:16:10,202 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 11:16:10,202 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2019-11-20 11:16:10,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-20 11:16:10,202 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:16:10,203 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:16:10,407 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 11:16:10,408 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 11:16:10,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:16:10,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1948223762, now seen corresponding path program 1 times [2019-11-20 11:16:10,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:16:10,408 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706103878] [2019-11-20 11:16:10,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:16:10,421 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 11:16:10,422 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [710538594] [2019-11-20 11:16:10,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_751edb47-9f0f-4eb8-9d98-8e32da48485b/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 11:16:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 11:16:10,483 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 11:16:10,484 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 11:16:10,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 11:16:10,503 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706103878] [2019-11-20 11:16:10,503 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-20 11:16:10,503 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710538594] [2019-11-20 11:16:10,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 11:16:10,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-20 11:16:10,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499482055] [2019-11-20 11:16:10,504 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 11:16:10,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 11:16:10,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 11:16:10,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 11:16:10,505 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 4 states. [2019-11-20 11:16:10,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 11:16:10,564 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2019-11-20 11:16:10,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 11:16:10,564 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-20 11:16:10,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 11:16:10,565 INFO L225 Difference]: With dead ends: 36 [2019-11-20 11:16:10,565 INFO L226 Difference]: Without dead ends: 29 [2019-11-20 11:16:10,566 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 11:16:10,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-20 11:16:10,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 19. [2019-11-20 11:16:10,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-20 11:16:10,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2019-11-20 11:16:10,570 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 13 [2019-11-20 11:16:10,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 11:16:10,571 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2019-11-20 11:16:10,571 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 11:16:10,571 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2019-11-20 11:16:10,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-20 11:16:10,571 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 11:16:10,572 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 11:16:10,772 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 11:16:10,772 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 11:16:10,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 11:16:10,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1326513248, now seen corresponding path program 1 times [2019-11-20 11:16:10,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 11:16:10,773 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470901075] [2019-11-20 11:16:10,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 11:16:10,815 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-20 11:16:10,815 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1041735099] [2019-11-20 11:16:10,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_751edb47-9f0f-4eb8-9d98-8e32da48485b/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 11:16:10,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:16:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 11:16:10,887 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 11:16:10,887 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 11:16:11,096 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 11:16:11,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:16:11 BoogieIcfgContainer [2019-11-20 11:16:11,122 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 11:16:11,123 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 11:16:11,123 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 11:16:11,123 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 11:16:11,123 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:16:09" (3/4) ... [2019-11-20 11:16:11,125 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 11:16:11,167 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_751edb47-9f0f-4eb8-9d98-8e32da48485b/bin/uautomizer/witness.graphml [2019-11-20 11:16:11,168 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 11:16:11,170 INFO L168 Benchmark]: Toolchain (without parser) took 2183.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 199.8 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -139.8 MB). Peak memory consumption was 60.0 MB. Max. memory is 11.5 GB. [2019-11-20 11:16:11,170 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:16:11,171 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 199.8 MB). Free memory was 946.1 MB in the beginning and 1.2 GB in the end (delta: -244.9 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2019-11-20 11:16:11,171 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.49 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:16:11,171 INFO L168 Benchmark]: Boogie Preprocessor took 21.83 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 11:16:11,172 INFO L168 Benchmark]: RCFGBuilder took 295.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-20 11:16:11,172 INFO L168 Benchmark]: TraceAbstraction took 1389.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 75.3 MB). Peak memory consumption was 75.3 MB. Max. memory is 11.5 GB. [2019-11-20 11:16:11,173 INFO L168 Benchmark]: Witness Printer took 45.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-20 11:16:11,176 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 394.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 199.8 MB). Free memory was 946.1 MB in the beginning and 1.2 GB in the end (delta: -244.9 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.49 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.83 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 295.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1389.66 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 75.3 MB). Peak memory consumption was 75.3 MB. Max. memory is 11.5 GB. * Witness Printer took 45.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int N; VAL [N=0] [L18] N = __VERIFIER_nondet_int() [L19] COND FALSE !(N <= 0) [L22] int i; [L23] long long *a = malloc(sizeof(long long)*N); [L24] long long *b = malloc(sizeof(long long)*N); [L26] i=0 VAL [N=1] [L26] COND TRUE i