./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/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 05bc981af08af727cc8a5fe70f318cd57004d0de .................................................................................................................................................................................................................................................................................................... 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_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/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 05bc981af08af727cc8a5fe70f318cd57004d0de ............................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 06:49:53,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 06:49:53,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 06:49:53,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 06:49:53,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 06:49:53,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 06:49:53,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 06:49:53,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 06:49:53,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 06:49:53,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 06:49:53,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 06:49:53,401 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 06:49:53,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 06:49:53,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 06:49:53,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 06:49:53,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 06:49:53,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 06:49:53,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 06:49:53,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 06:49:53,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 06:49:53,409 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 06:49:53,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 06:49:53,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 06:49:53,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 06:49:53,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 06:49:53,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 06:49:53,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 06:49:53,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 06:49:53,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 06:49:53,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 06:49:53,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 06:49:53,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 06:49:53,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 06:49:53,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 06:49:53,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 06:49:53,424 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 06:49:53,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 06:49:53,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 06:49:53,425 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 06:49:53,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 06:49:53,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 06:49:53,427 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 06:49:53,451 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 06:49:53,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 06:49:53,452 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 06:49:53,452 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 06:49:53,452 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 06:49:53,452 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 06:49:53,453 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 06:49:53,453 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 06:49:53,453 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 06:49:53,453 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 06:49:53,453 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 06:49:53,453 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 06:49:53,454 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 06:49:53,454 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 06:49:53,454 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 06:49:53,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 06:49:53,455 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 06:49:53,455 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 06:49:53,455 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 06:49:53,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 06:49:53,455 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 06:49:53,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 06:49:53,456 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 06:49:53,456 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 06:49:53,456 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 06:49:53,456 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 06:49:53,456 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 06:49:53,457 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 06:49:53,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 06:49:53,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 06:49:53,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:49:53,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 06:49:53,458 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 06:49:53,458 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 06:49:53,458 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 06:49:53,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 06:49:53,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 06:49:53,458 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 06:49:53,459 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 06:49:53,459 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_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05bc981af08af727cc8a5fe70f318cd57004d0de [2020-12-09 06:49:53,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 06:49:53,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 06:49:53,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 06:49:53,675 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 06:49:53,675 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 06:49:53,676 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c [2020-12-09 06:49:53,715 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/bin/utaipan/data/14f2c8079/7a54dd36c9644e6d83b4d487a5f823f0/FLAG3d1c2e269 [2020-12-09 06:49:54,081 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 06:49:54,082 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c [2020-12-09 06:49:54,086 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/bin/utaipan/data/14f2c8079/7a54dd36c9644e6d83b4d487a5f823f0/FLAG3d1c2e269 [2020-12-09 06:49:54,095 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/bin/utaipan/data/14f2c8079/7a54dd36c9644e6d83b4d487a5f823f0 [2020-12-09 06:49:54,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 06:49:54,098 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 06:49:54,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 06:49:54,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 06:49:54,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 06:49:54,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:49:54" (1/1) ... [2020-12-09 06:49:54,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25a097ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:54, skipping insertion in model container [2020-12-09 06:49:54,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:49:54" (1/1) ... [2020-12-09 06:49:54,110 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 06:49:54,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 06:49:54,224 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_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c[709,722] [2020-12-09 06:49:54,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:49:54,248 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 06:49:54,257 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_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c[709,722] [2020-12-09 06:49:54,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:49:54,275 INFO L208 MainTranslator]: Completed translation [2020-12-09 06:49:54,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:54 WrapperNode [2020-12-09 06:49:54,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 06:49:54,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 06:49:54,277 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 06:49:54,277 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 06:49:54,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:54" (1/1) ... [2020-12-09 06:49:54,291 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:54" (1/1) ... [2020-12-09 06:49:54,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 06:49:54,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 06:49:54,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 06:49:54,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 06:49:54,315 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:54" (1/1) ... [2020-12-09 06:49:54,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:54" (1/1) ... [2020-12-09 06:49:54,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:54" (1/1) ... [2020-12-09 06:49:54,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:54" (1/1) ... [2020-12-09 06:49:54,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:54" (1/1) ... [2020-12-09 06:49:54,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:54" (1/1) ... [2020-12-09 06:49:54,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:54" (1/1) ... [2020-12-09 06:49:54,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 06:49:54,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 06:49:54,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 06:49:54,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 06:49:54,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/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 06:49:54,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 06:49:54,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 06:49:54,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 06:49:54,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 06:49:54,592 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 06:49:54,593 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-09 06:49:54,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:49:54 BoogieIcfgContainer [2020-12-09 06:49:54,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 06:49:54,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 06:49:54,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 06:49:54,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 06:49:54,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:49:54" (1/3) ... [2020-12-09 06:49:54,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f54965e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:49:54, skipping insertion in model container [2020-12-09 06:49:54,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:54" (2/3) ... [2020-12-09 06:49:54,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f54965e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:49:54, skipping insertion in model container [2020-12-09 06:49:54,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:49:54" (3/3) ... [2020-12-09 06:49:54,603 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound5.c [2020-12-09 06:49:54,616 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 06:49:54,618 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 06:49:54,628 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 06:49:54,650 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 06:49:54,651 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 06:49:54,651 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 06:49:54,651 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 06:49:54,651 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 06:49:54,651 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 06:49:54,651 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 06:49:54,651 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 06:49:54,663 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-12-09 06:49:54,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 06:49:54,666 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:49:54,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 06:49:54,667 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 06:49:54,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:49:54,672 INFO L82 PathProgramCache]: Analyzing trace with hash 113318109, now seen corresponding path program 1 times [2020-12-09 06:49:54,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:49:54,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384571527] [2020-12-09 06:49:54,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:49:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:49:54,769 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 06:49:54,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384571527] [2020-12-09 06:49:54,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:49:54,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 06:49:54,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975493277] [2020-12-09 06:49:54,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 06:49:54,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:49:54,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 06:49:54,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 06:49:54,784 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-12-09 06:49:54,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:49:54,796 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2020-12-09 06:49:54,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 06:49:54,797 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-09 06:49:54,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:49:54,802 INFO L225 Difference]: With dead ends: 57 [2020-12-09 06:49:54,802 INFO L226 Difference]: Without dead ends: 27 [2020-12-09 06:49:54,804 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 06:49:54,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-09 06:49:54,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-12-09 06:49:54,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 06:49:54,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-12-09 06:49:54,828 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 5 [2020-12-09 06:49:54,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:49:54,828 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-12-09 06:49:54,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 06:49:54,828 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-12-09 06:49:54,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 06:49:54,828 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:49:54,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 06:49:54,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 06:49:54,829 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 06:49:54,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:49:54,830 INFO L82 PathProgramCache]: Analyzing trace with hash 111966592, now seen corresponding path program 1 times [2020-12-09 06:49:54,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:49:54,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992655783] [2020-12-09 06:49:54,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:49:54,842 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 06:49:54,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [939716838] [2020-12-09 06:49:54,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/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 06:49:54,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 06:49:54,877 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 06:49:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 06:49:54,887 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 06:49:54,907 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 06:49:54,907 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 06:49:55,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-09 06:49:55,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:49:55 BoogieIcfgContainer [2020-12-09 06:49:55,170 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 06:49:55,172 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 06:49:55,172 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 06:49:55,173 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 06:49:55,174 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:49:54" (3/4) ... [2020-12-09 06:49:55,181 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 06:49:55,182 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 06:49:55,186 INFO L168 Benchmark]: Toolchain (without parser) took 1084.40 ms. Allocated memory is still 113.2 MB. Free memory was 74.5 MB in the beginning and 55.3 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. [2020-12-09 06:49:55,187 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 113.2 MB. Free memory is still 90.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:49:55,188 INFO L168 Benchmark]: CACSL2BoogieTranslator took 176.30 ms. Allocated memory is still 113.2 MB. Free memory was 74.3 MB in the beginning and 63.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 06:49:55,189 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.61 ms. Allocated memory is still 113.2 MB. Free memory was 63.7 MB in the beginning and 62.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:49:55,190 INFO L168 Benchmark]: Boogie Preprocessor took 17.30 ms. Allocated memory is still 113.2 MB. Free memory was 62.0 MB in the beginning and 60.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:49:55,191 INFO L168 Benchmark]: RCFGBuilder took 268.85 ms. Allocated memory is still 113.2 MB. Free memory was 60.8 MB in the beginning and 83.1 MB in the end (delta: -22.3 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. [2020-12-09 06:49:55,192 INFO L168 Benchmark]: TraceAbstraction took 573.90 ms. Allocated memory is still 113.2 MB. Free memory was 82.5 MB in the beginning and 55.8 MB in the end (delta: 26.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-12-09 06:49:55,193 INFO L168 Benchmark]: Witness Printer took 9.82 ms. Allocated memory is still 113.2 MB. Free memory was 55.8 MB in the beginning and 55.3 MB in the end (delta: 514.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:49:55,197 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 113.2 MB. Free memory is still 90.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 176.30 ms. Allocated memory is still 113.2 MB. Free memory was 74.3 MB in the beginning and 63.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.61 ms. Allocated memory is still 113.2 MB. Free memory was 63.7 MB in the beginning and 62.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.30 ms. Allocated memory is still 113.2 MB. Free memory was 62.0 MB in the beginning and 60.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 268.85 ms. Allocated memory is still 113.2 MB. Free memory was 60.8 MB in the beginning and 83.1 MB in the end (delta: -22.3 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 573.90 ms. Allocated memory is still 113.2 MB. Free memory was 82.5 MB in the beginning and 55.8 MB in the end (delta: 26.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Witness Printer took 9.82 ms. Allocated memory is still 113.2 MB. Free memory was 55.8 MB in the beginning and 55.3 MB in the end (delta: 514.3 kB). Peak memory consumption was 2.1 MB. 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++<5 [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 06:49:56,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 06:49:56,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 06:49:56,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 06:49:56,723 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 06:49:56,724 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 06:49:56,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 06:49:56,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 06:49:56,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 06:49:56,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 06:49:56,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 06:49:56,732 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 06:49:56,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 06:49:56,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 06:49:56,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 06:49:56,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 06:49:56,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 06:49:56,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 06:49:56,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 06:49:56,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 06:49:56,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 06:49:56,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 06:49:56,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 06:49:56,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 06:49:56,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 06:49:56,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 06:49:56,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 06:49:56,751 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 06:49:56,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 06:49:56,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 06:49:56,753 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 06:49:56,754 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 06:49:56,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 06:49:56,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 06:49:56,756 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 06:49:56,756 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 06:49:56,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 06:49:56,757 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 06:49:56,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 06:49:56,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 06:49:56,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 06:49:56,759 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 06:49:56,787 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 06:49:56,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 06:49:56,788 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 06:49:56,788 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 06:49:56,788 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 06:49:56,788 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 06:49:56,789 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 06:49:56,789 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 06:49:56,789 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 06:49:56,789 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 06:49:56,790 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 06:49:56,790 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 06:49:56,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 06:49:56,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 06:49:56,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 06:49:56,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 06:49:56,790 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 06:49:56,790 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 06:49:56,791 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 06:49:56,791 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 06:49:56,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 06:49:56,791 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 06:49:56,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 06:49:56,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 06:49:56,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 06:49:56,791 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 06:49:56,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:49:56,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 06:49:56,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 06:49:56,792 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 06:49:56,792 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 06:49:56,792 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 06:49:56,792 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 06:49:56,792 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 06:49:56,793 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 06:49:56,793 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_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05bc981af08af727cc8a5fe70f318cd57004d0de [2020-12-09 06:49:57,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 06:49:57,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 06:49:57,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 06:49:57,034 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 06:49:57,034 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 06:49:57,035 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c [2020-12-09 06:49:57,075 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/bin/utaipan/data/f70d86674/225d5c3dceb042279d54c2b980a0619b/FLAG55b8a468c [2020-12-09 06:49:57,440 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 06:49:57,441 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c [2020-12-09 06:49:57,446 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/bin/utaipan/data/f70d86674/225d5c3dceb042279d54c2b980a0619b/FLAG55b8a468c [2020-12-09 06:49:57,456 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/bin/utaipan/data/f70d86674/225d5c3dceb042279d54c2b980a0619b [2020-12-09 06:49:57,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 06:49:57,459 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 06:49:57,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 06:49:57,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 06:49:57,463 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 06:49:57,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:49:57" (1/1) ... [2020-12-09 06:49:57,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2581b4be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:57, skipping insertion in model container [2020-12-09 06:49:57,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:49:57" (1/1) ... [2020-12-09 06:49:57,469 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 06:49:57,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 06:49:57,575 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_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c[709,722] [2020-12-09 06:49:57,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:49:57,602 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 06:49:57,619 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_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c[709,722] [2020-12-09 06:49:57,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:49:57,648 INFO L208 MainTranslator]: Completed translation [2020-12-09 06:49:57,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:57 WrapperNode [2020-12-09 06:49:57,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 06:49:57,649 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 06:49:57,650 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 06:49:57,650 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 06:49:57,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:57" (1/1) ... [2020-12-09 06:49:57,663 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:57" (1/1) ... [2020-12-09 06:49:57,683 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 06:49:57,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 06:49:57,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 06:49:57,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 06:49:57,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:57" (1/1) ... [2020-12-09 06:49:57,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:57" (1/1) ... [2020-12-09 06:49:57,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:57" (1/1) ... [2020-12-09 06:49:57,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:57" (1/1) ... [2020-12-09 06:49:57,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:57" (1/1) ... [2020-12-09 06:49:57,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:57" (1/1) ... [2020-12-09 06:49:57,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:57" (1/1) ... [2020-12-09 06:49:57,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 06:49:57,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 06:49:57,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 06:49:57,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 06:49:57,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/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 06:49:57,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 06:49:57,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 06:49:57,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 06:49:57,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 06:50:11,075 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 06:50:11,076 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-09 06:50:11,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:50:11 BoogieIcfgContainer [2020-12-09 06:50:11,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 06:50:11,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 06:50:11,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 06:50:11,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 06:50:11,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:49:57" (1/3) ... [2020-12-09 06:50:11,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b538ff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:50:11, skipping insertion in model container [2020-12-09 06:50:11,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:49:57" (2/3) ... [2020-12-09 06:50:11,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b538ff1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:50:11, skipping insertion in model container [2020-12-09 06:50:11,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:50:11" (3/3) ... [2020-12-09 06:50:11,083 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound5.c [2020-12-09 06:50:11,094 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 06:50:11,096 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 06:50:11,104 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 06:50:11,120 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 06:50:11,120 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 06:50:11,120 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 06:50:11,120 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 06:50:11,120 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 06:50:11,120 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 06:50:11,120 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 06:50:11,120 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 06:50:11,129 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-12-09 06:50:11,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 06:50:11,132 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:50:11,133 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 06:50:11,133 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 06:50:11,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:50:11,137 INFO L82 PathProgramCache]: Analyzing trace with hash 890922791, now seen corresponding path program 1 times [2020-12-09 06:50:11,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:50:11,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354961574] [2020-12-09 06:50:11,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/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 06:50:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:50:11,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 06:50:11,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:50:11,294 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 06:50:11,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:50:11,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354961574] [2020-12-09 06:50:11,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:50:11,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 06:50:11,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791904628] [2020-12-09 06:50:11,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 06:50:11,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:50:11,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 06:50:11,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 06:50:11,309 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-12-09 06:50:11,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:50:11,322 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2020-12-09 06:50:11,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 06:50:11,322 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-09 06:50:11,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:50:11,328 INFO L225 Difference]: With dead ends: 62 [2020-12-09 06:50:11,328 INFO L226 Difference]: Without dead ends: 28 [2020-12-09 06:50:11,330 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 06:50:11,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-09 06:50:11,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-09 06:50:11,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 06:50:11,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-12-09 06:50:11,354 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2020-12-09 06:50:11,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:50:11,354 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-12-09 06:50:11,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 06:50:11,354 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-12-09 06:50:11,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 06:50:11,355 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:50:11,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 06:50:11,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 06:50:11,556 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 06:50:11,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:50:11,556 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-09 06:50:11,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:50:11,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2083025882] [2020-12-09 06:50:11,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/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 06:50:11,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:50:11,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 06:50:11,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:50:11,829 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 06:50:11,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:50:11,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2083025882] [2020-12-09 06:50:11,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:50:11,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 06:50:11,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255476558] [2020-12-09 06:50:11,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 06:50:11,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:50:11,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 06:50:11,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:50:11,833 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 5 states. [2020-12-09 06:50:30,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:50:30,305 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-12-09 06:50:30,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 06:50:30,306 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-12-09 06:50:30,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:50:30,307 INFO L225 Difference]: With dead ends: 39 [2020-12-09 06:50:30,307 INFO L226 Difference]: Without dead ends: 35 [2020-12-09 06:50:30,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-09 06:50:30,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-09 06:50:30,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-12-09 06:50:30,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 06:50:30,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-12-09 06:50:30,313 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 6 [2020-12-09 06:50:30,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:50:30,313 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-12-09 06:50:30,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 06:50:30,314 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-12-09 06:50:30,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 06:50:30,314 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:50:30,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:50:30,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 06:50:30,516 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 06:50:30,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:50:30,519 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2020-12-09 06:50:30,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:50:30,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343127421] [2020-12-09 06:50:30,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/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 06:50:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:50:31,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 06:50:31,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:50:41,535 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 06:50:43,554 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 06:50:43,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:50:43,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343127421] [2020-12-09 06:50:43,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:50:43,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 06:50:43,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098407405] [2020-12-09 06:50:43,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 06:50:43,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:50:43,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 06:50:43,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=7, Unknown=1, NotChecked=4, Total=20 [2020-12-09 06:50:43,556 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 5 states. [2020-12-09 06:50:58,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:50:58,521 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2020-12-09 06:50:58,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 06:50:58,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-09 06:50:58,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:50:58,538 INFO L225 Difference]: With dead ends: 36 [2020-12-09 06:50:58,539 INFO L226 Difference]: Without dead ends: 34 [2020-12-09 06:50:58,539 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 06:50:58,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-09 06:50:58,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2020-12-09 06:50:58,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-09 06:50:58,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-12-09 06:50:58,543 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 8 [2020-12-09 06:50:58,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:50:58,543 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-12-09 06:50:58,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 06:50:58,544 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-12-09 06:50:58,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 06:50:58,544 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:50:58,544 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:50:58,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 06:50:58,746 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 06:50:58,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:50:58,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1248817364, now seen corresponding path program 1 times [2020-12-09 06:50:58,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:50:58,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [208740708] [2020-12-09 06:50:58,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/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 06:50:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:50:59,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 06:50:59,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:50:59,133 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 06:50:59,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:50:59,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [208740708] [2020-12-09 06:50:59,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:50:59,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:50:59,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519137999] [2020-12-09 06:50:59,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:50:59,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:50:59,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:50:59,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:50:59,135 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 4 states. [2020-12-09 06:51:01,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:51:01,147 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-12-09 06:51:01,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:51:01,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 06:51:01,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:51:01,148 INFO L225 Difference]: With dead ends: 39 [2020-12-09 06:51:01,148 INFO L226 Difference]: Without dead ends: 29 [2020-12-09 06:51:01,148 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 06:51:01,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-09 06:51:01,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-09 06:51:01,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-09 06:51:01,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-12-09 06:51:01,152 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 9 [2020-12-09 06:51:01,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:51:01,152 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-12-09 06:51:01,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:51:01,153 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-12-09 06:51:01,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 06:51:01,153 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:51:01,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:51:01,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 06:51:01,355 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 06:51:01,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:51:01,357 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2020-12-09 06:51:01,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:51:01,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92001765] [2020-12-09 06:51:01,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/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 06:51:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 06:51:02,673 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 06:52:49,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 06:52:49,583 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 06:52:50,175 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-12-09 06:52:50,175 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 06:52:50,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 06:52:50,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:52:50 BoogieIcfgContainer [2020-12-09 06:52:50,399 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 06:52:50,400 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 06:52:50,400 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 06:52:50,400 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 06:52:50,400 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:50:11" (3/4) ... [2020-12-09 06:52:50,402 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 06:52:50,427 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_04e43d9f-7dc9-42a7-a8e6-63d3a853fd48/bin/utaipan/witness.graphml [2020-12-09 06:52:50,427 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 06:52:50,428 INFO L168 Benchmark]: Toolchain (without parser) took 172968.08 ms. Allocated memory was 56.6 MB in the beginning and 92.3 MB in the end (delta: 35.7 MB). Free memory was 36.0 MB in the beginning and 53.8 MB in the end (delta: -17.8 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2020-12-09 06:52:50,428 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 56.6 MB. Free memory was 39.0 MB in the beginning and 39.0 MB in the end (delta: 73.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:52:50,429 INFO L168 Benchmark]: CACSL2BoogieTranslator took 188.80 ms. Allocated memory is still 56.6 MB. Free memory was 35.7 MB in the beginning and 39.3 MB in the end (delta: -3.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 06:52:50,429 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.23 ms. Allocated memory is still 56.6 MB. Free memory was 39.3 MB in the beginning and 37.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:52:50,429 INFO L168 Benchmark]: Boogie Preprocessor took 27.28 ms. Allocated memory is still 56.6 MB. Free memory was 37.7 MB in the beginning and 36.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:52:50,430 INFO L168 Benchmark]: RCFGBuilder took 13364.76 ms. Allocated memory was 56.6 MB in the beginning and 92.3 MB in the end (delta: 35.7 MB). Free memory was 36.2 MB in the beginning and 71.1 MB in the end (delta: -35.0 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2020-12-09 06:52:50,430 INFO L168 Benchmark]: TraceAbstraction took 159321.10 ms. Allocated memory is still 92.3 MB. Free memory was 70.8 MB in the beginning and 55.9 MB in the end (delta: 14.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2020-12-09 06:52:50,431 INFO L168 Benchmark]: Witness Printer took 27.01 ms. Allocated memory is still 92.3 MB. Free memory was 55.9 MB in the beginning and 53.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:52:50,433 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 56.6 MB. Free memory was 39.0 MB in the beginning and 39.0 MB in the end (delta: 73.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 188.80 ms. Allocated memory is still 56.6 MB. Free memory was 35.7 MB in the beginning and 39.3 MB in the end (delta: -3.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.23 ms. Allocated memory is still 56.6 MB. Free memory was 39.3 MB in the beginning and 37.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.28 ms. Allocated memory is still 56.6 MB. Free memory was 37.7 MB in the beginning and 36.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 13364.76 ms. Allocated memory was 56.6 MB in the beginning and 92.3 MB in the end (delta: 35.7 MB). Free memory was 36.2 MB in the beginning and 71.1 MB in the end (delta: -35.0 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 159321.10 ms. Allocated memory is still 92.3 MB. Free memory was 70.8 MB in the beginning and 55.9 MB in the end (delta: 14.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. * Witness Printer took 27.01 ms. Allocated memory is still 92.3 MB. Free memory was 55.9 MB in the beginning and 53.8 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++<5 [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: 159.2s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 35.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 103 SDtfs, 24 SDslu, 104 SDs, 0 SdLazy, 38 SolverSat, 2 SolverUnsat, 12 SolverUnknown, 0 SolverNotchecked, 34.6s 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, 2.4s SatisfiabilityAnalysisTime, 12.5s 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...