./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test_while_int.c_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a5a79919-fa8b-4074-8644-71ab24247efd/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a5a79919-fa8b-4074-8644-71ab24247efd/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a5a79919-fa8b-4074-8644-71ab24247efd/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a5a79919-fa8b-4074-8644-71ab24247efd/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test_while_int.c_1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_a5a79919-fa8b-4074-8644-71ab24247efd/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a5a79919-fa8b-4074-8644-71ab24247efd/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4ca9b729f2ec82a71f4bbd71180c30ba5c27c5d4 ...................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-03 12:33:55,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 12:33:55,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 12:33:55,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 12:33:55,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 12:33:55,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 12:33:55,186 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 12:33:55,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 12:33:55,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 12:33:55,213 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 12:33:55,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 12:33:55,216 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 12:33:55,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 12:33:55,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 12:33:55,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 12:33:55,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 12:33:55,223 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 12:33:55,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 12:33:55,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 12:33:55,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 12:33:55,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 12:33:55,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 12:33:55,236 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 12:33:55,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 12:33:55,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 12:33:55,249 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 12:33:55,250 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 12:33:55,251 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 12:33:55,252 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 12:33:55,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 12:33:55,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 12:33:55,255 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 12:33:55,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 12:33:55,258 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 12:33:55,259 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 12:33:55,259 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 12:33:55,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 12:33:55,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 12:33:55,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 12:33:55,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 12:33:55,263 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 12:33:55,264 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a5a79919-fa8b-4074-8644-71ab24247efd/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-03 12:33:55,291 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 12:33:55,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 12:33:55,292 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-03 12:33:55,293 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-03 12:33:55,293 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-03 12:33:55,293 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-03 12:33:55,293 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-03 12:33:55,294 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-03 12:33:55,294 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-03 12:33:55,294 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-03 12:33:55,294 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-03 12:33:55,295 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-03 12:33:55,295 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-03 12:33:55,295 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-03 12:33:55,296 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-03 12:33:55,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 12:33:55,297 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 12:33:55,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 12:33:55,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 12:33:55,298 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 12:33:55,298 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 12:33:55,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 12:33:55,298 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 12:33:55,299 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-03 12:33:55,299 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 12:33:55,299 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 12:33:55,299 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 12:33:55,300 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 12:33:55,300 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 12:33:55,300 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 12:33:55,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:33:55,301 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 12:33:55,301 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 12:33:55,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 12:33:55,302 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-03 12:33:55,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 12:33:55,302 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 12:33:55,303 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 12:33:55,303 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 12:33:55,303 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_a5a79919-fa8b-4074-8644-71ab24247efd/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a5a79919-fa8b-4074-8644-71ab24247efd/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ca9b729f2ec82a71f4bbd71180c30ba5c27c5d4 [2020-12-03 12:33:55,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 12:33:55,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 12:33:55,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 12:33:55,593 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 12:33:55,594 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 12:33:55,595 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a5a79919-fa8b-4074-8644-71ab24247efd/bin/utaipan/../../sv-benchmarks/c/ldv-regression/test_while_int.c_1.i [2020-12-03 12:33:55,694 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a5a79919-fa8b-4074-8644-71ab24247efd/bin/utaipan/data/7db3da798/f2a61494c222422a870190a8d96c5afd/FLAG3b5e890bd [2020-12-03 12:33:56,300 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 12:33:56,301 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a5a79919-fa8b-4074-8644-71ab24247efd/sv-benchmarks/c/ldv-regression/test_while_int.c_1.i [2020-12-03 12:33:56,332 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a5a79919-fa8b-4074-8644-71ab24247efd/bin/utaipan/data/7db3da798/f2a61494c222422a870190a8d96c5afd/FLAG3b5e890bd [2020-12-03 12:33:56,640 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a5a79919-fa8b-4074-8644-71ab24247efd/bin/utaipan/data/7db3da798/f2a61494c222422a870190a8d96c5afd [2020-12-03 12:33:56,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 12:33:56,647 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 12:33:56,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 12:33:56,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 12:33:56,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 12:33:56,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:33:56" (1/1) ... [2020-12-03 12:33:56,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fe7a1a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:56, skipping insertion in model container [2020-12-03 12:33:56,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 12:33:56" (1/1) ... [2020-12-03 12:33:56,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 12:33:56,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 12:33:56,851 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_a5a79919-fa8b-4074-8644-71ab24247efd/sv-benchmarks/c/ldv-regression/test_while_int.c_1.i[300,313] [2020-12-03 12:33:56,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:33:56,879 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 12:33:56,894 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_a5a79919-fa8b-4074-8644-71ab24247efd/sv-benchmarks/c/ldv-regression/test_while_int.c_1.i[300,313] [2020-12-03 12:33:56,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 12:33:56,915 INFO L208 MainTranslator]: Completed translation [2020-12-03 12:33:56,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:56 WrapperNode [2020-12-03 12:33:56,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 12:33:56,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 12:33:56,917 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 12:33:56,918 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 12:33:56,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:56" (1/1) ... [2020-12-03 12:33:56,935 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:56" (1/1) ... [2020-12-03 12:33:56,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 12:33:56,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 12:33:56,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 12:33:56,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 12:33:56,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:56" (1/1) ... [2020-12-03 12:33:56,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:56" (1/1) ... [2020-12-03 12:33:56,969 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:56" (1/1) ... [2020-12-03 12:33:56,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:56" (1/1) ... [2020-12-03 12:33:56,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:56" (1/1) ... [2020-12-03 12:33:56,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:56" (1/1) ... [2020-12-03 12:33:56,984 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:56" (1/1) ... [2020-12-03 12:33:56,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 12:33:56,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 12:33:56,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 12:33:56,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 12:33:57,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a5a79919-fa8b-4074-8644-71ab24247efd/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 12:33:57,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 12:33:57,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 12:33:57,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-03 12:33:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 12:33:57,365 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 12:33:57,366 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-03 12:33:57,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:33:57 BoogieIcfgContainer [2020-12-03 12:33:57,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 12:33:57,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 12:33:57,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 12:33:57,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 12:33:57,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 12:33:56" (1/3) ... [2020-12-03 12:33:57,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2681516f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:33:57, skipping insertion in model container [2020-12-03 12:33:57,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 12:33:56" (2/3) ... [2020-12-03 12:33:57,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2681516f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 12:33:57, skipping insertion in model container [2020-12-03 12:33:57,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:33:57" (3/3) ... [2020-12-03 12:33:57,393 INFO L111 eAbstractionObserver]: Analyzing ICFG test_while_int.c_1.i [2020-12-03 12:33:57,410 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 12:33:57,413 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-03 12:33:57,427 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-03 12:33:57,454 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 12:33:57,455 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 12:33:57,455 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 12:33:57,455 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 12:33:57,455 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 12:33:57,455 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 12:33:57,455 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 12:33:57,455 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 12:33:57,470 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2020-12-03 12:33:57,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-03 12:33:57,477 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:33:57,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-03 12:33:57,478 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:33:57,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:33:57,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1798545, now seen corresponding path program 1 times [2020-12-03 12:33:57,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:33:57,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55582857] [2020-12-03 12:33:57,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:33:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:33:57,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:33:57,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55582857] [2020-12-03 12:33:57,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 12:33:57,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-03 12:33:57,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602962006] [2020-12-03 12:33:57,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 12:33:57,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:33:57,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 12:33:57,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:33:57,764 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2020-12-03 12:33:57,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:33:57,858 INFO L93 Difference]: Finished difference Result 14 states and 19 transitions. [2020-12-03 12:33:57,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 12:33:57,860 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-12-03 12:33:57,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:33:57,868 INFO L225 Difference]: With dead ends: 14 [2020-12-03 12:33:57,869 INFO L226 Difference]: Without dead ends: 8 [2020-12-03 12:33:57,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-03 12:33:57,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-12-03 12:33:57,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-12-03 12:33:57,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-12-03 12:33:57,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2020-12-03 12:33:57,915 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2020-12-03 12:33:57,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:33:57,915 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2020-12-03 12:33:57,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 12:33:57,916 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2020-12-03 12:33:57,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-03 12:33:57,916 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:33:57,931 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-12-03 12:33:57,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-03 12:33:57,932 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:33:57,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:33:57,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1728335950, now seen corresponding path program 1 times [2020-12-03 12:33:57,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:33:57,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187345862] [2020-12-03 12:33:57,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:33:57,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:33:57,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:33:57,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187345862] [2020-12-03 12:33:57,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763579334] [2020-12-03 12:33:57,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a5a79919-fa8b-4074-8644-71ab24247efd/bin/utaipan/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 [2020-12-03 12:33:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 12:33:58,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-03 12:33:58,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 12:33:58,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:33:58,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-03 12:33:58,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 12:33:58,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2063030728] [2020-12-03 12:33:58,191 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2020-12-03 12:33:58,191 INFO L166 IcfgInterpreter]: Building call graph [2020-12-03 12:33:58,197 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-03 12:33:58,202 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-03 12:33:58,203 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-03 12:33:58,814 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-12-03 12:33:58,985 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-03 12:33:59,440 WARN L197 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2020-12-03 12:33:59,526 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 12:33:59,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-03 12:33:59,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2020-12-03 12:33:59,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917346179] [2020-12-03 12:33:59,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-03 12:33:59,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-03 12:33:59,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-03 12:33:59,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-03 12:33:59,531 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2020-12-03 12:33:59,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 12:33:59,553 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-12-03 12:33:59,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 12:33:59,554 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2020-12-03 12:33:59,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 12:33:59,555 INFO L225 Difference]: With dead ends: 12 [2020-12-03 12:33:59,555 INFO L226 Difference]: Without dead ends: 10 [2020-12-03 12:33:59,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-03 12:33:59,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-12-03 12:33:59,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2020-12-03 12:33:59,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-03 12:33:59,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-12-03 12:33:59,559 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2020-12-03 12:33:59,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 12:33:59,560 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-12-03 12:33:59,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-03 12:33:59,560 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-12-03 12:33:59,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-03 12:33:59,561 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 12:33:59,561 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2020-12-03 12:33:59,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-03 12:33:59,781 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 12:33:59,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 12:33:59,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1221561397, now seen corresponding path program 2 times [2020-12-03 12:33:59,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-03 12:33:59,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700765326] [2020-12-03 12:33:59,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 12:33:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 12:33:59,800 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 12:33:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 12:33:59,825 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 12:33:59,843 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-03 12:33:59,843 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-03 12:33:59,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-03 12:33:59,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 12:33:59 BoogieIcfgContainer [2020-12-03 12:33:59,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 12:33:59,870 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 12:33:59,870 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 12:33:59,871 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 12:33:59,871 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 12:33:57" (3/4) ... [2020-12-03 12:33:59,874 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-03 12:33:59,919 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a5a79919-fa8b-4074-8644-71ab24247efd/bin/utaipan/witness.graphml [2020-12-03 12:33:59,920 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 12:33:59,921 INFO L168 Benchmark]: Toolchain (without parser) took 3272.95 ms. Allocated memory is still 104.9 MB. Free memory was 84.8 MB in the beginning and 52.5 MB in the end (delta: 32.3 MB). Peak memory consumption was 32.0 MB. Max. memory is 16.1 GB. [2020-12-03 12:33:59,922 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 77.6 MB. Free memory is still 47.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:33:59,923 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.16 ms. Allocated memory is still 104.9 MB. Free memory was 84.5 MB in the beginning and 75.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-03 12:33:59,923 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.78 ms. Allocated memory is still 104.9 MB. Free memory was 75.4 MB in the beginning and 73.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 12:33:59,924 INFO L168 Benchmark]: Boogie Preprocessor took 37.51 ms. Allocated memory is still 104.9 MB. Free memory was 73.9 MB in the beginning and 73.0 MB in the end (delta: 962.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:33:59,925 INFO L168 Benchmark]: RCFGBuilder took 386.21 ms. Allocated memory is still 104.9 MB. Free memory was 73.0 MB in the beginning and 60.6 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-03 12:33:59,926 INFO L168 Benchmark]: TraceAbstraction took 2487.01 ms. Allocated memory is still 104.9 MB. Free memory was 60.2 MB in the beginning and 54.6 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. [2020-12-03 12:33:59,927 INFO L168 Benchmark]: Witness Printer took 49.40 ms. Allocated memory is still 104.9 MB. Free memory was 54.6 MB in the beginning and 52.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 12:33:59,933 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 77.6 MB. Free memory is still 47.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 266.16 ms. Allocated memory is still 104.9 MB. Free memory was 84.5 MB in the beginning and 75.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.78 ms. Allocated memory is still 104.9 MB. Free memory was 75.4 MB in the beginning and 73.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.51 ms. Allocated memory is still 104.9 MB. Free memory was 73.9 MB in the beginning and 73.0 MB in the end (delta: 962.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 386.21 ms. Allocated memory is still 104.9 MB. Free memory was 73.0 MB in the beginning and 60.6 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2487.01 ms. Allocated memory is still 104.9 MB. Free memory was 60.2 MB in the beginning and 54.6 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. * Witness Printer took 49.40 ms. Allocated memory is still 104.9 MB. Free memory was 54.6 MB in the beginning and 52.5 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: - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] int i=0; [L15] COND TRUE i<5 [L16] i++ [L18] (i!=3) ? (0) : __blast_assert () [L15] COND TRUE i<5 [L16] i++ [L18] (i!=3) ? (0) : __blast_assert () [L15] COND TRUE i<5 [L16] i++ [L18] (i!=3) ? (0) : __blast_assert () [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.3s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7 SDtfs, 3 SDslu, 5 SDs, 0 SdLazy, 21 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 216 SizeOfPredicates, 0 NumberOfNonLiveVariables, 43 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...