./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.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_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/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 514e626768732b278bbbbc5302dd7dcabf3292bc ..................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/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 514e626768732b278bbbbc5302dd7dcabf3292bc .............................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 19:35:35,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 19:35:35,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 19:35:35,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 19:35:35,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 19:35:35,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 19:35:35,263 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 19:35:35,265 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 19:35:35,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 19:35:35,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 19:35:35,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 19:35:35,269 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 19:35:35,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 19:35:35,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 19:35:35,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 19:35:35,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 19:35:35,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 19:35:35,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 19:35:35,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 19:35:35,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 19:35:35,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 19:35:35,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 19:35:35,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 19:35:35,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 19:35:35,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 19:35:35,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 19:35:35,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 19:35:35,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 19:35:35,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 19:35:35,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 19:35:35,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 19:35:35,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 19:35:35,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 19:35:35,291 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 19:35:35,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 19:35:35,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 19:35:35,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 19:35:35,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 19:35:35,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 19:35:35,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 19:35:35,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 19:35:35,296 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 19:35:35,317 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 19:35:35,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 19:35:35,318 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 19:35:35,319 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 19:35:35,319 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 19:35:35,319 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 19:35:35,319 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 19:35:35,319 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 19:35:35,320 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 19:35:35,320 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 19:35:35,320 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 19:35:35,320 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 19:35:35,320 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 19:35:35,320 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 19:35:35,321 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 19:35:35,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 19:35:35,321 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 19:35:35,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 19:35:35,322 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 19:35:35,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 19:35:35,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 19:35:35,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 19:35:35,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 19:35:35,323 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 19:35:35,323 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 19:35:35,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 19:35:35,323 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 19:35:35,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 19:35:35,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 19:35:35,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 19:35:35,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:35:35,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 19:35:35,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 19:35:35,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 19:35:35,325 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 19:35:35,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 19:35:35,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 19:35:35,325 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 19:35:35,325 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 19:35:35,325 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_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 514e626768732b278bbbbc5302dd7dcabf3292bc [2020-12-09 19:35:35,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 19:35:35,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 19:35:35,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 19:35:35,511 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 19:35:35,511 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 19:35:35,512 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c [2020-12-09 19:35:35,563 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/bin/utaipan/data/2ed023fcb/3188669ccd4f44eab9330dec32a65ec7/FLAG914024e39 [2020-12-09 19:35:35,933 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 19:35:35,934 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c [2020-12-09 19:35:35,938 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/bin/utaipan/data/2ed023fcb/3188669ccd4f44eab9330dec32a65ec7/FLAG914024e39 [2020-12-09 19:35:35,948 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/bin/utaipan/data/2ed023fcb/3188669ccd4f44eab9330dec32a65ec7 [2020-12-09 19:35:35,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 19:35:35,950 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 19:35:35,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 19:35:35,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 19:35:35,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 19:35:35,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:35:35" (1/1) ... [2020-12-09 19:35:35,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9f9665a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:35, skipping insertion in model container [2020-12-09 19:35:35,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:35:35" (1/1) ... [2020-12-09 19:35:35,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 19:35:35,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 19:35:36,085 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_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c[709,722] [2020-12-09 19:35:36,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:35:36,109 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 19:35:36,117 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_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c[709,722] [2020-12-09 19:35:36,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:35:36,134 INFO L208 MainTranslator]: Completed translation [2020-12-09 19:35:36,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:36 WrapperNode [2020-12-09 19:35:36,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 19:35:36,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 19:35:36,136 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 19:35:36,136 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 19:35:36,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:36" (1/1) ... [2020-12-09 19:35:36,147 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:36" (1/1) ... [2020-12-09 19:35:36,161 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 19:35:36,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 19:35:36,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 19:35:36,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 19:35:36,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:36" (1/1) ... [2020-12-09 19:35:36,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:36" (1/1) ... [2020-12-09 19:35:36,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:36" (1/1) ... [2020-12-09 19:35:36,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:36" (1/1) ... [2020-12-09 19:35:36,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:36" (1/1) ... [2020-12-09 19:35:36,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:36" (1/1) ... [2020-12-09 19:35:36,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:36" (1/1) ... [2020-12-09 19:35:36,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 19:35:36,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 19:35:36,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 19:35:36,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 19:35:36,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/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 19:35:36,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 19:35:36,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 19:35:36,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 19:35:36,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 19:35:36,435 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 19:35:36,436 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-09 19:35:36,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:35:36 BoogieIcfgContainer [2020-12-09 19:35:36,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 19:35:36,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 19:35:36,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 19:35:36,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 19:35:36,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:35:35" (1/3) ... [2020-12-09 19:35:36,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb99d2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:35:36, skipping insertion in model container [2020-12-09 19:35:36,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:36" (2/3) ... [2020-12-09 19:35:36,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb99d2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:35:36, skipping insertion in model container [2020-12-09 19:35:36,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:35:36" (3/3) ... [2020-12-09 19:35:36,446 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound10.c [2020-12-09 19:35:36,459 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 19:35:36,462 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 19:35:36,471 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 19:35:36,488 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 19:35:36,488 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 19:35:36,489 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 19:35:36,489 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 19:35:36,489 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 19:35:36,489 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 19:35:36,489 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 19:35:36,489 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 19:35:36,500 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-12-09 19:35:36,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 19:35:36,503 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:35:36,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 19:35:36,504 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:35:36,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:35:36,508 INFO L82 PathProgramCache]: Analyzing trace with hash 113318109, now seen corresponding path program 1 times [2020-12-09 19:35:36,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:35:36,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535239758] [2020-12-09 19:35:36,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:35:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:35:36,611 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 19:35:36,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535239758] [2020-12-09 19:35:36,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:35:36,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:35:36,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308678703] [2020-12-09 19:35:36,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 19:35:36,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 19:35:36,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 19:35:36,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 19:35:36,633 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-12-09 19:35:36,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:35:36,645 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2020-12-09 19:35:36,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 19:35:36,646 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-09 19:35:36,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:35:36,652 INFO L225 Difference]: With dead ends: 57 [2020-12-09 19:35:36,652 INFO L226 Difference]: Without dead ends: 27 [2020-12-09 19:35:36,655 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 19:35:36,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-09 19:35:36,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-12-09 19:35:36,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 19:35:36,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-12-09 19:35:36,678 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 5 [2020-12-09 19:35:36,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:35:36,678 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-12-09 19:35:36,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 19:35:36,679 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-12-09 19:35:36,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 19:35:36,679 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:35:36,679 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 19:35:36,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 19:35:36,680 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:35:36,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:35:36,680 INFO L82 PathProgramCache]: Analyzing trace with hash 111966592, now seen corresponding path program 1 times [2020-12-09 19:35:36,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 19:35:36,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014120962] [2020-12-09 19:35:36,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 19:35:36,693 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 19:35:36,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [776902974] [2020-12-09 19:35:36,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/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 19:35:36,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:35:36,735 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:35:36,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:35:36,747 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:35:36,771 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 19:35:36,771 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 19:35:36,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-09 19:35:37,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:35:37 BoogieIcfgContainer [2020-12-09 19:35:37,036 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 19:35:37,038 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 19:35:37,038 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 19:35:37,039 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 19:35:37,040 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:35:36" (3/4) ... [2020-12-09 19:35:37,048 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 19:35:37,048 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 19:35:37,053 INFO L168 Benchmark]: Toolchain (without parser) took 1099.03 ms. Allocated memory is still 125.8 MB. Free memory was 93.9 MB in the beginning and 55.1 MB in the end (delta: 38.9 MB). Peak memory consumption was 37.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:35:37,056 INFO L168 Benchmark]: CDTParser took 7.08 ms. Allocated memory is still 73.4 MB. Free memory was 33.0 MB in the beginning and 47.9 MB in the end (delta: -14.9 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. [2020-12-09 19:35:37,058 INFO L168 Benchmark]: CACSL2BoogieTranslator took 183.47 ms. Allocated memory is still 125.8 MB. Free memory was 93.7 MB in the beginning and 102.6 MB in the end (delta: -8.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 19:35:37,059 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.97 ms. Allocated memory is still 125.8 MB. Free memory was 101.9 MB in the beginning and 100.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:35:37,061 INFO L168 Benchmark]: Boogie Preprocessor took 22.52 ms. Allocated memory is still 125.8 MB. Free memory was 100.5 MB in the beginning and 99.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:35:37,063 INFO L168 Benchmark]: RCFGBuilder took 253.61 ms. Allocated memory is still 125.8 MB. Free memory was 99.1 MB in the beginning and 83.0 MB in the end (delta: 16.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 19:35:37,065 INFO L168 Benchmark]: TraceAbstraction took 597.03 ms. Allocated memory is still 125.8 MB. Free memory was 82.3 MB in the beginning and 55.8 MB in the end (delta: 26.6 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-12-09 19:35:37,067 INFO L168 Benchmark]: Witness Printer took 10.19 ms. Allocated memory is still 125.8 MB. Free memory was 55.8 MB in the beginning and 55.1 MB in the end (delta: 687.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:35:37,077 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 7.08 ms. Allocated memory is still 73.4 MB. Free memory was 33.0 MB in the beginning and 47.9 MB in the end (delta: -14.9 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 183.47 ms. Allocated memory is still 125.8 MB. Free memory was 93.7 MB in the beginning and 102.6 MB in the end (delta: -8.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 24.97 ms. Allocated memory is still 125.8 MB. Free memory was 101.9 MB in the beginning and 100.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.52 ms. Allocated memory is still 125.8 MB. Free memory was 100.5 MB in the beginning and 99.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 253.61 ms. Allocated memory is still 125.8 MB. Free memory was 99.1 MB in the beginning and 83.0 MB in the end (delta: 16.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 597.03 ms. Allocated memory is still 125.8 MB. Free memory was 82.3 MB in the beginning and 55.8 MB in the end (delta: 26.6 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * Witness Printer took 10.19 ms. Allocated memory is still 125.8 MB. Free memory was 55.8 MB in the beginning and 55.1 MB in the end (delta: 687.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 34. Possible FailurePath: [L24] int counter = 0; [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<10 [L17] COND TRUE !(cond) VAL [counter=1] [L19] reach_error() VAL [counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 19:35:38,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 19:35:38,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 19:35:38,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 19:35:38,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 19:35:38,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 19:35:38,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 19:35:38,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 19:35:38,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 19:35:38,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 19:35:38,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 19:35:38,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 19:35:38,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 19:35:38,817 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 19:35:38,818 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 19:35:38,819 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 19:35:38,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 19:35:38,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 19:35:38,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 19:35:38,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 19:35:38,828 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 19:35:38,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 19:35:38,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 19:35:38,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 19:35:38,836 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 19:35:38,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 19:35:38,837 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 19:35:38,838 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 19:35:38,838 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 19:35:38,840 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 19:35:38,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 19:35:38,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 19:35:38,842 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 19:35:38,843 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 19:35:38,844 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 19:35:38,844 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 19:35:38,845 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 19:35:38,845 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 19:35:38,845 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 19:35:38,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 19:35:38,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 19:35:38,848 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 19:35:38,873 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 19:35:38,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 19:35:38,874 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 19:35:38,875 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 19:35:38,875 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 19:35:38,875 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 19:35:38,875 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 19:35:38,875 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 19:35:38,876 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 19:35:38,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 19:35:38,877 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 19:35:38,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 19:35:38,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 19:35:38,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 19:35:38,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 19:35:38,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 19:35:38,878 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 19:35:38,878 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 19:35:38,878 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 19:35:38,878 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 19:35:38,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 19:35:38,879 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 19:35:38,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 19:35:38,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 19:35:38,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 19:35:38,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 19:35:38,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 19:35:38,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 19:35:38,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 19:35:38,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 19:35:38,881 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 19:35:38,881 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 19:35:38,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 19:35:38,881 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 19:35:38,881 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 19:35:38,882 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 514e626768732b278bbbbc5302dd7dcabf3292bc [2020-12-09 19:35:39,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 19:35:39,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 19:35:39,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 19:35:39,126 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 19:35:39,126 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 19:35:39,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c [2020-12-09 19:35:39,168 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/bin/utaipan/data/ea1f0bedf/b06e04de43c1423f8004c19af37f5106/FLAG18483051d [2020-12-09 19:35:39,567 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 19:35:39,567 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c [2020-12-09 19:35:39,574 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/bin/utaipan/data/ea1f0bedf/b06e04de43c1423f8004c19af37f5106/FLAG18483051d [2020-12-09 19:35:39,585 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/bin/utaipan/data/ea1f0bedf/b06e04de43c1423f8004c19af37f5106 [2020-12-09 19:35:39,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 19:35:39,588 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 19:35:39,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 19:35:39,589 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 19:35:39,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 19:35:39,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:35:39" (1/1) ... [2020-12-09 19:35:39,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fee19c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:39, skipping insertion in model container [2020-12-09 19:35:39,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:35:39" (1/1) ... [2020-12-09 19:35:39,601 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 19:35:39,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 19:35:39,716 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_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c[709,722] [2020-12-09 19:35:39,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:35:39,746 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 19:35:39,759 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_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound10.c[709,722] [2020-12-09 19:35:39,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 19:35:39,788 INFO L208 MainTranslator]: Completed translation [2020-12-09 19:35:39,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:39 WrapperNode [2020-12-09 19:35:39,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 19:35:39,789 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 19:35:39,790 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 19:35:39,790 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 19:35:39,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:39" (1/1) ... [2020-12-09 19:35:39,804 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:39" (1/1) ... [2020-12-09 19:35:39,825 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 19:35:39,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 19:35:39,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 19:35:39,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 19:35:39,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:39" (1/1) ... [2020-12-09 19:35:39,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:39" (1/1) ... [2020-12-09 19:35:39,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:39" (1/1) ... [2020-12-09 19:35:39,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:39" (1/1) ... [2020-12-09 19:35:39,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:39" (1/1) ... [2020-12-09 19:35:39,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:39" (1/1) ... [2020-12-09 19:35:39,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:39" (1/1) ... [2020-12-09 19:35:39,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 19:35:39,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 19:35:39,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 19:35:39,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 19:35:39,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/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 19:35:39,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 19:35:39,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 19:35:39,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 19:35:39,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 19:35:53,309 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 19:35:53,310 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-09 19:35:53,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:35:53 BoogieIcfgContainer [2020-12-09 19:35:53,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 19:35:53,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 19:35:53,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 19:35:53,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 19:35:53,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:35:39" (1/3) ... [2020-12-09 19:35:53,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3909ee33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:35:53, skipping insertion in model container [2020-12-09 19:35:53,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:35:39" (2/3) ... [2020-12-09 19:35:53,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3909ee33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:35:53, skipping insertion in model container [2020-12-09 19:35:53,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:35:53" (3/3) ... [2020-12-09 19:35:53,317 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound10.c [2020-12-09 19:35:53,328 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 19:35:53,331 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 19:35:53,338 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 19:35:53,354 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 19:35:53,354 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 19:35:53,354 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 19:35:53,354 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 19:35:53,354 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 19:35:53,354 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 19:35:53,354 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 19:35:53,354 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 19:35:53,363 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-12-09 19:35:53,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 19:35:53,366 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:35:53,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 19:35:53,367 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:35:53,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:35:53,370 INFO L82 PathProgramCache]: Analyzing trace with hash 890922791, now seen corresponding path program 1 times [2020-12-09 19:35:53,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:35:53,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635108937] [2020-12-09 19:35:53,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 19:35:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:35:53,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 19:35:53,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:35:53,522 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 19:35:53,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:35:53,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635108937] [2020-12-09 19:35:53,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:35:53,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 19:35:53,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646583874] [2020-12-09 19:35:53,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 19:35:53,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:35:53,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 19:35:53,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 19:35:53,537 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-12-09 19:35:53,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:35:53,549 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2020-12-09 19:35:53,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 19:35:53,550 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-09 19:35:53,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:35:53,556 INFO L225 Difference]: With dead ends: 62 [2020-12-09 19:35:53,556 INFO L226 Difference]: Without dead ends: 28 [2020-12-09 19:35:53,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 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 19:35:53,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-09 19:35:53,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-09 19:35:53,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 19:35:53,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-12-09 19:35:53,584 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2020-12-09 19:35:53,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:35:53,584 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-12-09 19:35:53,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 19:35:53,584 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-12-09 19:35:53,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 19:35:53,585 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:35:53,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 19:35:53,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 19:35:53,786 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:35:53,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:35:53,786 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-09 19:35:53,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:35:53,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634102278] [2020-12-09 19:35:53,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 19:35:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:35:53,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 19:35:53,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:35:54,073 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 19:35:54,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:35:54,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634102278] [2020-12-09 19:35:54,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:35:54,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 19:35:54,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577608683] [2020-12-09 19:35:54,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 19:35:54,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:35:54,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 19:35:54,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 19:35:54,076 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 5 states. [2020-12-09 19:36:13,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:36:13,590 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-12-09 19:36:13,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 19:36:13,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-12-09 19:36:13,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:36:13,592 INFO L225 Difference]: With dead ends: 39 [2020-12-09 19:36:13,592 INFO L226 Difference]: Without dead ends: 35 [2020-12-09 19:36:13,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-09 19:36:13,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-09 19:36:13,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-12-09 19:36:13,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 19:36:13,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-12-09 19:36:13,601 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 6 [2020-12-09 19:36:13,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:36:13,602 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-12-09 19:36:13,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 19:36:13,602 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-12-09 19:36:13,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 19:36:13,603 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:36:13,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:36:13,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 19:36:13,805 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:36:13,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:36:13,807 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2020-12-09 19:36:13,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:36:13,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [798351718] [2020-12-09 19:36:13,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 19:36:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:36:14,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 19:36:14,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:36:24,981 WARN L838 $PredicateComparison]: unable to prove that (or (and (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (exists ((v_prenex_1 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv4 32)) v_prenex_1))) (fp.sub roundNearestTiesToEven .cse0 .cse0))) (_ bv0 32)))) (and (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (let ((.cse1 (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv4 32)) ULTIMATE.start_main_~a~0))) (fp.sub roundNearestTiesToEven .cse1 .cse1))) (_ bv0 32)))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) is different from false [2020-12-09 19:36:26,645 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 19:36:26,646 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:36:26,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [798351718] [2020-12-09 19:36:26,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:36:26,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 19:36:26,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706156670] [2020-12-09 19:36:26,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 19:36:26,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:36:26,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 19:36:26,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=7, Unknown=1, NotChecked=4, Total=20 [2020-12-09 19:36:26,649 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 5 states. [2020-12-09 19:36:43,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:36:43,003 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2020-12-09 19:36:43,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 19:36:43,025 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-09 19:36:43,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:36:43,026 INFO L225 Difference]: With dead ends: 36 [2020-12-09 19:36:43,026 INFO L226 Difference]: Without dead ends: 34 [2020-12-09 19:36:43,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=8, Invalid=7, Unknown=1, NotChecked=4, Total=20 [2020-12-09 19:36:43,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-09 19:36:43,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2020-12-09 19:36:43,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-09 19:36:43,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-12-09 19:36:43,033 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 8 [2020-12-09 19:36:43,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:36:43,033 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-12-09 19:36:43,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 19:36:43,033 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-12-09 19:36:43,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 19:36:43,034 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:36:43,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:36:43,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 19:36:43,236 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:36:43,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:36:43,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1248817364, now seen corresponding path program 1 times [2020-12-09 19:36:43,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:36:43,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521895114] [2020-12-09 19:36:43,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 19:36:43,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 19:36:43,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 19:36:43,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 19:36:43,670 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 19:36:43,670 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 19:36:43,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521895114] [2020-12-09 19:36:43,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 19:36:43,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 19:36:43,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587524768] [2020-12-09 19:36:43,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 19:36:43,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 19:36:43,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 19:36:43,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:36:43,673 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 4 states. [2020-12-09 19:36:44,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 19:36:44,776 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-12-09 19:36:44,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 19:36:44,776 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 19:36:44,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 19:36:44,777 INFO L225 Difference]: With dead ends: 39 [2020-12-09 19:36:44,777 INFO L226 Difference]: Without dead ends: 29 [2020-12-09 19:36:44,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 19:36:44,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-09 19:36:44,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-09 19:36:44,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-09 19:36:44,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-12-09 19:36:44,782 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 9 [2020-12-09 19:36:44,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 19:36:44,782 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-12-09 19:36:44,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 19:36:44,783 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-12-09 19:36:44,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 19:36:44,783 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 19:36:44,783 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 19:36:44,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 19:36:44,985 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 19:36:44,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 19:36:44,987 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2020-12-09 19:36:44,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 19:36:44,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943477410] [2020-12-09 19:36:44,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-09 19:36:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:36:46,324 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:37:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 19:37:39,626 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 19:37:39,881 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-12-09 19:37:39,881 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 19:37:40,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 19:37:40,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:37:40 BoogieIcfgContainer [2020-12-09 19:37:40,107 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 19:37:40,107 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 19:37:40,107 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 19:37:40,107 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 19:37:40,108 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:35:53" (3/4) ... [2020-12-09 19:37:40,109 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 19:37:40,135 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a5422aac-d1f6-4539-8abf-6e3cd0475aeb/bin/utaipan/witness.graphml [2020-12-09 19:37:40,135 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 19:37:40,136 INFO L168 Benchmark]: Toolchain (without parser) took 120547.49 ms. Allocated memory was 50.3 MB in the beginning and 65.0 MB in the end (delta: 14.7 MB). Free memory was 28.1 MB in the beginning and 27.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:37:40,136 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 50.3 MB. Free memory is still 32.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:37:40,137 INFO L168 Benchmark]: CACSL2BoogieTranslator took 199.32 ms. Allocated memory was 50.3 MB in the beginning and 65.0 MB in the end (delta: 14.7 MB). Free memory was 28.0 MB in the beginning and 47.8 MB in the end (delta: -19.8 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-12-09 19:37:40,137 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.23 ms. Allocated memory is still 65.0 MB. Free memory was 47.6 MB in the beginning and 46.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:37:40,138 INFO L168 Benchmark]: Boogie Preprocessor took 22.03 ms. Allocated memory is still 65.0 MB. Free memory was 46.0 MB in the beginning and 44.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 19:37:40,138 INFO L168 Benchmark]: RCFGBuilder took 13462.22 ms. Allocated memory is still 65.0 MB. Free memory was 44.6 MB in the beginning and 45.9 MB in the end (delta: -1.3 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. [2020-12-09 19:37:40,138 INFO L168 Benchmark]: TraceAbstraction took 106794.55 ms. Allocated memory is still 65.0 MB. Free memory was 45.6 MB in the beginning and 29.1 MB in the end (delta: 16.5 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. [2020-12-09 19:37:40,139 INFO L168 Benchmark]: Witness Printer took 27.79 ms. Allocated memory is still 65.0 MB. Free memory was 29.1 MB in the beginning and 27.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 19:37:40,141 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 50.3 MB. Free memory is still 32.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 199.32 ms. Allocated memory was 50.3 MB in the beginning and 65.0 MB in the end (delta: 14.7 MB). Free memory was 28.0 MB in the beginning and 47.8 MB in the end (delta: -19.8 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.23 ms. Allocated memory is still 65.0 MB. Free memory was 47.6 MB in the beginning and 46.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.03 ms. Allocated memory is still 65.0 MB. Free memory was 46.0 MB in the beginning and 44.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 13462.22 ms. Allocated memory is still 65.0 MB. Free memory was 44.6 MB in the beginning and 45.9 MB in the end (delta: -1.3 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 106794.55 ms. Allocated memory is still 65.0 MB. Free memory was 45.6 MB in the beginning and 29.1 MB in the end (delta: 16.5 MB). Peak memory consumption was 15.6 MB. Max. memory is 16.1 GB. * Witness Printer took 27.79 ms. Allocated memory is still 65.0 MB. Free memory was 29.1 MB in the beginning and 27.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<10 [L17] COND FALSE !(!(cond)) VAL [counter=1] [L17] COND FALSE !(!(cond)) VAL [counter=1] [L17] COND TRUE !(cond) VAL [counter=1] [L19] reach_error() VAL [counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 106.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 37.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 103 SDtfs, 24 SDslu, 104 SDs, 0 SdLazy, 37 SolverSat, 2 SolverUnsat, 13 SolverUnknown, 0 SolverNotchecked, 36.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 12.2s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 25 ConstructedInterpolants, 1 QuantifiedInterpolants, 960 SizeOfPredicates, 10 NumberOfNonLiveVariables, 140 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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...