./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound5.c --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_59ec6d00-4168-40c1-abcd-5bcfa5c47a1e/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_59ec6d00-4168-40c1-abcd-5bcfa5c47a1e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_59ec6d00-4168-40c1-abcd-5bcfa5c47a1e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_59ec6d00-4168-40c1-abcd-5bcfa5c47a1e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_59ec6d00-4168-40c1-abcd-5bcfa5c47a1e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_59ec6d00-4168-40c1-abcd-5bcfa5c47a1e/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 1cc9cf79891afa42e51c5a84218adbd4a63e1151 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 [2020-12-09 07:06:15,236 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 07:06:15,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 07:06:15,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 07:06:15,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 07:06:15,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 07:06:15,269 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 07:06:15,271 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 07:06:15,273 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 07:06:15,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 07:06:15,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 07:06:15,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 07:06:15,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 07:06:15,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 07:06:15,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 07:06:15,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 07:06:15,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 07:06:15,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 07:06:15,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 07:06:15,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 07:06:15,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 07:06:15,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 07:06:15,291 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 07:06:15,292 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 07:06:15,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 07:06:15,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 07:06:15,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 07:06:15,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 07:06:15,297 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 07:06:15,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 07:06:15,298 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 07:06:15,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 07:06:15,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 07:06:15,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 07:06:15,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 07:06:15,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 07:06:15,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 07:06:15,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 07:06:15,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 07:06:15,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 07:06:15,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 07:06:15,304 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_59ec6d00-4168-40c1-abcd-5bcfa5c47a1e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 07:06:15,326 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 07:06:15,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 07:06:15,327 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 07:06:15,327 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 07:06:15,327 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 07:06:15,327 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 07:06:15,327 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 07:06:15,328 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 07:06:15,328 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 07:06:15,328 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 07:06:15,328 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 07:06:15,328 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 07:06:15,328 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 07:06:15,328 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 07:06:15,329 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 07:06:15,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 07:06:15,329 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 07:06:15,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 07:06:15,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 07:06:15,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 07:06:15,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 07:06:15,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 07:06:15,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 07:06:15,330 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 07:06:15,330 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 07:06:15,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 07:06:15,330 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 07:06:15,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 07:06:15,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 07:06:15,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 07:06:15,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:06:15,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 07:06:15,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 07:06:15,331 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 07:06:15,331 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 07:06:15,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 07:06:15,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 07:06:15,332 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 07:06:15,332 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 07:06:15,332 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_59ec6d00-4168-40c1-abcd-5bcfa5c47a1e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_59ec6d00-4168-40c1-abcd-5bcfa5c47a1e/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1cc9cf79891afa42e51c5a84218adbd4a63e1151 [2020-12-09 07:06:15,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 07:06:15,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 07:06:15,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 07:06:15,545 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 07:06:15,546 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 07:06:15,546 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_59ec6d00-4168-40c1-abcd-5bcfa5c47a1e/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound5.c [2020-12-09 07:06:15,587 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_59ec6d00-4168-40c1-abcd-5bcfa5c47a1e/bin/utaipan/data/608ebbcc4/95cc644b8b7540eaa7cd06e390e57be4/FLAG9a3ce899e [2020-12-09 07:06:15,940 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 07:06:15,941 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_59ec6d00-4168-40c1-abcd-5bcfa5c47a1e/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound5.c [2020-12-09 07:06:15,945 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_59ec6d00-4168-40c1-abcd-5bcfa5c47a1e/bin/utaipan/data/608ebbcc4/95cc644b8b7540eaa7cd06e390e57be4/FLAG9a3ce899e [2020-12-09 07:06:15,955 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_59ec6d00-4168-40c1-abcd-5bcfa5c47a1e/bin/utaipan/data/608ebbcc4/95cc644b8b7540eaa7cd06e390e57be4 [2020-12-09 07:06:15,956 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 07:06:15,957 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 07:06:15,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 07:06:15,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 07:06:15,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 07:06:15,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:06:15" (1/1) ... [2020-12-09 07:06:15,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c199ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:06:15, skipping insertion in model container [2020-12-09 07:06:15,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:06:15" (1/1) ... [2020-12-09 07:06:15,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 07:06:15,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 07:06:16,078 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_59ec6d00-4168-40c1-abcd-5bcfa5c47a1e/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound5.c[573,586] [2020-12-09 07:06:16,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:06:16,097 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 07:06:16,106 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_59ec6d00-4168-40c1-abcd-5bcfa5c47a1e/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound5.c[573,586] [2020-12-09 07:06:16,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:06:16,127 INFO L208 MainTranslator]: Completed translation [2020-12-09 07:06:16,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:06:16 WrapperNode [2020-12-09 07:06:16,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 07:06:16,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 07:06:16,129 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 07:06:16,129 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 07:06:16,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:06:16" (1/1) ... [2020-12-09 07:06:16,149 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:06:16" (1/1) ... [2020-12-09 07:06:16,162 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 07:06:16,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 07:06:16,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 07:06:16,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 07:06:16,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:06:16" (1/1) ... [2020-12-09 07:06:16,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:06:16" (1/1) ... [2020-12-09 07:06:16,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:06:16" (1/1) ... [2020-12-09 07:06:16,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:06:16" (1/1) ... [2020-12-09 07:06:16,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:06:16" (1/1) ... [2020-12-09 07:06:16,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:06:16" (1/1) ... [2020-12-09 07:06:16,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:06:16" (1/1) ... [2020-12-09 07:06:16,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 07:06:16,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 07:06:16,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 07:06:16,178 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 07:06:16,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:06:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59ec6d00-4168-40c1-abcd-5bcfa5c47a1e/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 [2020-12-09 07:06:16,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 07:06:16,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 07:06:16,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 07:06:16,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 07:06:16,463 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 07:06:16,464 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-09 07:06:16,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:06:16 BoogieIcfgContainer [2020-12-09 07:06:16,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 07:06:16,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 07:06:16,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 07:06:16,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 07:06:16,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:06:15" (1/3) ... [2020-12-09 07:06:16,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a6a8953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:06:16, skipping insertion in model container [2020-12-09 07:06:16,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:06:16" (2/3) ... [2020-12-09 07:06:16,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a6a8953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:06:16, skipping insertion in model container [2020-12-09 07:06:16,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:06:16" (3/3) ... [2020-12-09 07:06:16,474 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound5.c [2020-12-09 07:06:16,488 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 07:06:16,491 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-09 07:06:16,507 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-09 07:06:16,530 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 07:06:16,530 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 07:06:16,530 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 07:06:16,530 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 07:06:16,531 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 07:06:16,531 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 07:06:16,531 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 07:06:16,531 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 07:06:16,543 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-12-09 07:06:16,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 07:06:16,547 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:06:16,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 07:06:16,548 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:06:16,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:06:16,553 INFO L82 PathProgramCache]: Analyzing trace with hash 98480205, now seen corresponding path program 1 times [2020-12-09 07:06:16,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:06:16,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273738874] [2020-12-09 07:06:16,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:06:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:06:16,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:06:16,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273738874] [2020-12-09 07:06:16,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:06:16,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:06:16,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859663857] [2020-12-09 07:06:16,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 07:06:16,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:06:16,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 07:06:16,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 07:06:16,684 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-12-09 07:06:16,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:06:16,694 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2020-12-09 07:06:16,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 07:06:16,695 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-09 07:06:16,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:06:16,700 INFO L225 Difference]: With dead ends: 25 [2020-12-09 07:06:16,700 INFO L226 Difference]: Without dead ends: 11 [2020-12-09 07:06:16,702 INFO L677 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 [2020-12-09 07:06:16,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-12-09 07:06:16,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-12-09 07:06:16,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-09 07:06:16,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2020-12-09 07:06:16,723 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 5 [2020-12-09 07:06:16,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:06:16,724 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-12-09 07:06:16,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 07:06:16,724 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2020-12-09 07:06:16,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 07:06:16,724 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:06:16,724 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 07:06:16,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 07:06:16,724 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:06:16,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:06:16,725 INFO L82 PathProgramCache]: Analyzing trace with hash 97621232, now seen corresponding path program 1 times [2020-12-09 07:06:16,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:06:16,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739547249] [2020-12-09 07:06:16,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:06:16,739 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:06:16,739 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1540703939] [2020-12-09 07:06:16,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59ec6d00-4168-40c1-abcd-5bcfa5c47a1e/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 [2020-12-09 07:06:16,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:06:16,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 07:06:16,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:06:16,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:06:16,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:06:16,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:06:16,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739547249] [2020-12-09 07:06:16,875 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:06:16,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540703939] [2020-12-09 07:06:16,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:06:16,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 07:06:16,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609574735] [2020-12-09 07:06:16,877 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 07:06:16,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:06:16,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 07:06:16,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 07:06:16,878 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 6 states. [2020-12-09 07:06:16,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:06:16,938 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2020-12-09 07:06:16,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 07:06:16,938 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2020-12-09 07:06:16,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:06:16,939 INFO L225 Difference]: With dead ends: 20 [2020-12-09 07:06:16,939 INFO L226 Difference]: Without dead ends: 18 [2020-12-09 07:06:16,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-09 07:06:16,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-09 07:06:16,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 9. [2020-12-09 07:06:16,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-09 07:06:16,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2020-12-09 07:06:16,943 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 5 [2020-12-09 07:06:16,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:06:16,943 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2020-12-09 07:06:16,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 07:06:16,943 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2020-12-09 07:06:16,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 07:06:16,944 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:06:16,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 07:06:17,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-09 07:06:17,146 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:06:17,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:06:17,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1268746775, now seen corresponding path program 1 times [2020-12-09 07:06:17,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:06:17,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297874588] [2020-12-09 07:06:17,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:06:17,190 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:06:17,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [849608805] [2020-12-09 07:06:17,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59ec6d00-4168-40c1-abcd-5bcfa5c47a1e/bin/utaipan/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 [2020-12-09 07:06:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:06:17,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 07:06:17,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:06:17,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:06:17,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:06:17,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:06:17,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297874588] [2020-12-09 07:06:17,341 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:06:17,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849608805] [2020-12-09 07:06:17,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:06:17,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 07:06:17,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37758716] [2020-12-09 07:06:17,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 07:06:17,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:06:17,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 07:06:17,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 07:06:17,342 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 6 states. [2020-12-09 07:06:17,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:06:17,365 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2020-12-09 07:06:17,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 07:06:17,365 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2020-12-09 07:06:17,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:06:17,366 INFO L225 Difference]: With dead ends: 23 [2020-12-09 07:06:17,366 INFO L226 Difference]: Without dead ends: 19 [2020-12-09 07:06:17,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 07:06:17,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-09 07:06:17,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2020-12-09 07:06:17,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-09 07:06:17,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-12-09 07:06:17,372 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 6 [2020-12-09 07:06:17,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:06:17,372 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-12-09 07:06:17,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 07:06:17,372 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-12-09 07:06:17,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 07:06:17,373 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:06:17,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:06:17,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:06:17,575 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:06:17,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:06:17,576 INFO L82 PathProgramCache]: Analyzing trace with hash 546169794, now seen corresponding path program 1 times [2020-12-09 07:06:17,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:06:17,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44169690] [2020-12-09 07:06:17,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:06:17,599 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:06:17,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1231194651] [2020-12-09 07:06:17,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59ec6d00-4168-40c1-abcd-5bcfa5c47a1e/bin/utaipan/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 [2020-12-09 07:06:17,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:06:17,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-09 07:06:17,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:06:17,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:06:17,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:06:17,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:06:17,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44169690] [2020-12-09 07:06:17,768 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:06:17,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231194651] [2020-12-09 07:06:17,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:06:17,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2020-12-09 07:06:17,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711803995] [2020-12-09 07:06:17,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-09 07:06:17,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:06:17,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-09 07:06:17,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-12-09 07:06:17,770 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 11 states. [2020-12-09 07:06:17,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:06:17,843 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-12-09 07:06:17,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 07:06:17,844 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 8 [2020-12-09 07:06:17,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:06:17,844 INFO L225 Difference]: With dead ends: 19 [2020-12-09 07:06:17,844 INFO L226 Difference]: Without dead ends: 15 [2020-12-09 07:06:17,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-09 07:06:17,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-09 07:06:17,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-12-09 07:06:17,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-09 07:06:17,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-12-09 07:06:17,847 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2020-12-09 07:06:17,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:06:17,847 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-12-09 07:06:17,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-09 07:06:17,847 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-12-09 07:06:17,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 07:06:17,848 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:06:17,848 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2020-12-09 07:06:18,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:06:18,049 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:06:18,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:06:18,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1998402165, now seen corresponding path program 1 times [2020-12-09 07:06:18,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:06:18,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335391614] [2020-12-09 07:06:18,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:06:18,085 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:06:18,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [825350077] [2020-12-09 07:06:18,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59ec6d00-4168-40c1-abcd-5bcfa5c47a1e/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:06:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:06:18,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 07:06:18,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:06:18,366 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:06:18,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 07:06:18,420 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:06:18,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335391614] [2020-12-09 07:06:18,420 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:06:18,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825350077] [2020-12-09 07:06:18,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [167411756] [2020-12-09 07:06:18,434 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 07:06:18,435 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 07:06:18,438 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 07:06:18,441 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 07:06:18,442 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 07:06:18,523 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 07:06:18,857 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 07:06:19,037 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2020-12-09 07:06:19,156 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2020-12-09 07:06:19,383 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-12-09 07:06:19,519 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 07:06:19,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 07:06:19,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-12-09 07:06:19,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401539097] [2020-12-09 07:06:19,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 07:06:19,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:06:19,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 07:06:19,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-12-09 07:06:19,521 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 9 states. [2020-12-09 07:06:19,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:06:19,580 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2020-12-09 07:06:19,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-09 07:06:19,581 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-12-09 07:06:19,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:06:19,581 INFO L225 Difference]: With dead ends: 31 [2020-12-09 07:06:19,582 INFO L226 Difference]: Without dead ends: 27 [2020-12-09 07:06:19,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2020-12-09 07:06:19,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-09 07:06:19,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-12-09 07:06:19,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 07:06:19,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-12-09 07:06:19,588 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2020-12-09 07:06:19,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:06:19,588 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-12-09 07:06:19,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 07:06:19,589 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-12-09 07:06:19,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-09 07:06:19,589 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:06:19,589 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1] [2020-12-09 07:06:19,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:06:19,790 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 07:06:19,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:06:19,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1608612546, now seen corresponding path program 2 times [2020-12-09 07:06:19,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:06:19,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366009918] [2020-12-09 07:06:19,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:06:19,801 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 07:06:19,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1691202930] [2020-12-09 07:06:19,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59ec6d00-4168-40c1-abcd-5bcfa5c47a1e/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 07:06:19,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-12-09 07:06:19,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-12-09 07:06:19,866 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 07:06:19,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 07:06:19,887 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 07:06:19,945 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 07:06:19,945 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 07:06:20,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2020-12-09 07:06:20,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:06:20 BoogieIcfgContainer [2020-12-09 07:06:20,211 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 07:06:20,211 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 07:06:20,211 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 07:06:20,211 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 07:06:20,212 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:06:16" (3/4) ... [2020-12-09 07:06:20,214 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 07:06:20,257 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_59ec6d00-4168-40c1-abcd-5bcfa5c47a1e/bin/utaipan/witness.graphml [2020-12-09 07:06:20,257 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 07:06:20,258 INFO L168 Benchmark]: Toolchain (without parser) took 4300.36 ms. Allocated memory was 79.7 MB in the beginning and 104.9 MB in the end (delta: 25.2 MB). Free memory was 55.3 MB in the beginning and 36.8 MB in the end (delta: 18.5 MB). Peak memory consumption was 44.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:06:20,259 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 79.7 MB. Free memory was 53.3 MB in the beginning and 53.2 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:06:20,259 INFO L168 Benchmark]: CACSL2BoogieTranslator took 169.89 ms. Allocated memory is still 79.7 MB. Free memory was 55.0 MB in the beginning and 59.8 MB in the end (delta: -4.8 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2020-12-09 07:06:20,259 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.75 ms. Allocated memory is still 79.7 MB. Free memory was 59.8 MB in the beginning and 58.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:06:20,260 INFO L168 Benchmark]: Boogie Preprocessor took 14.91 ms. Allocated memory is still 79.7 MB. Free memory was 58.1 MB in the beginning and 57.2 MB in the end (delta: 983.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:06:20,260 INFO L168 Benchmark]: RCFGBuilder took 287.77 ms. Allocated memory is still 79.7 MB. Free memory was 57.2 MB in the beginning and 37.1 MB in the end (delta: 20.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-12-09 07:06:20,261 INFO L168 Benchmark]: TraceAbstraction took 3743.40 ms. Allocated memory was 79.7 MB in the beginning and 104.9 MB in the end (delta: 25.2 MB). Free memory was 36.5 MB in the beginning and 41.0 MB in the end (delta: -4.5 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. [2020-12-09 07:06:20,261 INFO L168 Benchmark]: Witness Printer took 45.99 ms. Allocated memory is still 104.9 MB. Free memory was 40.0 MB in the beginning and 36.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 07:06:20,263 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 79.7 MB. Free memory was 53.3 MB in the beginning and 53.2 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 169.89 ms. Allocated memory is still 79.7 MB. Free memory was 55.0 MB in the beginning and 59.8 MB in the end (delta: -4.8 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.75 ms. Allocated memory is still 79.7 MB. Free memory was 59.8 MB in the beginning and 58.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 14.91 ms. Allocated memory is still 79.7 MB. Free memory was 58.1 MB in the beginning and 57.2 MB in the end (delta: 983.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 287.77 ms. Allocated memory is still 79.7 MB. Free memory was 57.2 MB in the beginning and 37.1 MB in the end (delta: 20.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3743.40 ms. Allocated memory was 79.7 MB in the beginning and 104.9 MB in the end (delta: 25.2 MB). Free memory was 36.5 MB in the beginning and 41.0 MB in the end (delta: -4.5 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. * Witness Printer took 45.99 ms. Allocated memory is still 104.9 MB. Free memory was 40.0 MB in the beginning and 36.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; [L24] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L13] COND FALSE !(!cond) [L13] COND FALSE !(!cond) [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 VAL [counter=0] [L36] EXPR counter++ VAL [counter=1] [L36] COND TRUE counter++<5 [L16] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=1] [L36] EXPR counter++ VAL [counter=2] [L36] COND TRUE counter++<5 [L16] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=2] [L36] EXPR counter++ VAL [counter=3] [L36] COND TRUE counter++<5 [L16] COND FALSE !(!(cond)) VAL [counter=3] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=3] [L36] EXPR counter++ VAL [counter=4] [L36] COND TRUE counter++<5 [L16] COND FALSE !(!(cond)) VAL [counter=4] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=4] [L36] EXPR counter++ VAL [counter=5] [L36] COND TRUE counter++<5 [L16] COND FALSE !(!(cond)) VAL [counter=5] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=5] [L36] EXPR counter++ VAL [counter=6] [L36] COND FALSE !(counter++<5) [L16] COND TRUE !(cond) VAL [counter=6] [L18] reach_error() VAL [counter=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.6s, OverallIterations: 6, TraceHistogramMax: 6, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 50 SDslu, 81 SDs, 0 SdLazy, 71 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=5, 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, 5 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 62 ConstructedInterpolants, 0 QuantifiedInterpolants, 2003 SizeOfPredicates, 24 NumberOfNonLiveVariables, 275 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 0/16 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...