./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE --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 6733f5cb9fc343de68240fd800b3186de8da0c1fcb51c576de9d571eaa34d1a7 ............................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE --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 6733f5cb9fc343de68240fd800b3186de8da0c1fcb51c576de9d571eaa34d1a7 .............................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.2.1-dev-e943c26 [2021-10-24 10:25:27,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:25:27,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:25:27,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:25:27,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:25:27,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:25:27,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:25:27,141 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:25:27,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:25:27,146 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:25:27,148 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:25:27,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:25:27,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:25:27,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:25:27,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:25:27,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:25:27,158 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:25:27,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:25:27,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:25:27,167 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:25:27,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:25:27,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:25:27,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:25:27,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:25:27,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:25:27,181 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:25:27,182 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:25:27,183 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:25:27,184 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:25:27,186 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:25:27,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:25:27,187 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:25:27,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:25:27,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:25:27,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:25:27,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:25:27,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:25:27,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:25:27,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:25:27,196 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:25:27,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:25:27,198 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:25:27,258 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:25:27,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:25:27,261 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:25:27,261 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:25:27,262 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:25:27,262 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:25:27,262 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:25:27,263 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:25:27,271 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:25:27,271 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:25:27,273 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:25:27,273 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:25:27,274 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:25:27,274 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:25:27,274 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:25:27,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:25:27,276 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:25:27,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:25:27,277 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:25:27,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:25:27,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:25:27,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:25:27,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:25:27,278 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:25:27,279 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:25:27,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:25:27,279 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:25:27,280 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:25:27,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:25:27,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:25:27,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:25:27,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:25:27,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:25:27,282 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:25:27,282 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:25:27,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:25:27,283 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:25:27,283 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:25:27,283 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:25:27,284 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_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6733f5cb9fc343de68240fd800b3186de8da0c1fcb51c576de9d571eaa34d1a7 [2021-10-24 10:25:27,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:25:27,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:25:27,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:25:27,721 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:25:27,722 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:25:27,723 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound10.c [2021-10-24 10:25:27,807 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/data/5ea6e2c90/3a78f3316ce04a609befa7ecc8368330/FLAG20aa1c6b9 [2021-10-24 10:25:28,364 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:25:28,365 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound10.c [2021-10-24 10:25:28,372 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/data/5ea6e2c90/3a78f3316ce04a609befa7ecc8368330/FLAG20aa1c6b9 [2021-10-24 10:25:28,704 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/data/5ea6e2c90/3a78f3316ce04a609befa7ecc8368330 [2021-10-24 10:25:28,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:25:28,709 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:25:28,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:25:28,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:25:28,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:25:28,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:25:28" (1/1) ... [2021-10-24 10:25:28,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b4f946a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:25:28, skipping insertion in model container [2021-10-24 10:25:28,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:25:28" (1/1) ... [2021-10-24 10:25:28,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:25:28,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:25:28,982 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound10.c[712,725] [2021-10-24 10:25:29,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:25:29,016 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:25:29,032 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound10.c[712,725] [2021-10-24 10:25:29,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:25:29,057 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:25:29,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:25:29 WrapperNode [2021-10-24 10:25:29,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:25:29,059 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:25:29,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:25:29,060 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:25:29,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:25:29" (1/1) ... [2021-10-24 10:25:29,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:25:29" (1/1) ... [2021-10-24 10:25:29,102 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:25:29,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:25:29,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:25:29,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:25:29,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:25:29" (1/1) ... [2021-10-24 10:25:29,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:25:29" (1/1) ... [2021-10-24 10:25:29,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:25:29" (1/1) ... [2021-10-24 10:25:29,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:25:29" (1/1) ... [2021-10-24 10:25:29,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:25:29" (1/1) ... [2021-10-24 10:25:29,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:25:29" (1/1) ... [2021-10-24 10:25:29,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:25:29" (1/1) ... [2021-10-24 10:25:29,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:25:29,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:25:29,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:25:29,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:25:29,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:25:29" (1/1) ... [2021-10-24 10:25:29,143 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:25:29,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:25:29,177 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:25:29,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:25:29,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:25:29,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:25:29,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:25:29,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:25:29,493 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:25:29,493 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-24 10:25:29,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:25:29 BoogieIcfgContainer [2021-10-24 10:25:29,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:25:29,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:25:29,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:25:29,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:25:29,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:25:28" (1/3) ... [2021-10-24 10:25:29,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35125df4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:25:29, skipping insertion in model container [2021-10-24 10:25:29,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:25:29" (2/3) ... [2021-10-24 10:25:29,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35125df4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:25:29, skipping insertion in model container [2021-10-24 10:25:29,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:25:29" (3/3) ... [2021-10-24 10:25:29,508 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound10.c [2021-10-24 10:25:29,515 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:25:29,516 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-24 10:25:29,582 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:25:29,591 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:25:29,592 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-24 10:25:29,610 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 10 states have (on average 1.7) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:25:29,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-24 10:25:29,617 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:25:29,618 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-24 10:25:29,619 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:25:29,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:25:29,628 INFO L82 PathProgramCache]: Analyzing trace with hash 71331668, now seen corresponding path program 1 times [2021-10-24 10:25:29,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:25:29,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686024322] [2021-10-24 10:25:29,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:25:29,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:25:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:25:29,857 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:25:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:25:29,910 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 10:25:29,918 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:25:29,922 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:25:29,925 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:25:29,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:25:29,937 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:25:29,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:25:29 BoogieIcfgContainer [2021-10-24 10:25:29,971 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:25:29,972 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:25:29,973 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:25:29,973 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:25:29,974 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:25:29" (3/4) ... [2021-10-24 10:25:29,978 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 10:25:29,986 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:25:29,990 INFO L168 Benchmark]: Toolchain (without parser) took 1278.74 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 53.4 MB in the beginning and 82.7 MB in the end (delta: -29.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:25:29,993 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 92.3 MB. Free memory is still 69.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:25:29,995 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.85 ms. Allocated memory is still 92.3 MB. Free memory was 53.1 MB in the beginning and 67.6 MB in the end (delta: -14.4 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-10-24 10:25:29,997 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.35 ms. Allocated memory is still 92.3 MB. Free memory was 67.3 MB in the beginning and 66.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:25:29,998 INFO L168 Benchmark]: Boogie Preprocessor took 27.20 ms. Allocated memory is still 92.3 MB. Free memory was 66.0 MB in the beginning and 65.0 MB in the end (delta: 947.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:25:30,000 INFO L168 Benchmark]: RCFGBuilder took 365.23 ms. Allocated memory is still 92.3 MB. Free memory was 64.8 MB in the beginning and 55.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:25:30,002 INFO L168 Benchmark]: TraceAbstraction took 472.34 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 54.5 MB in the beginning and 83.2 MB in the end (delta: -28.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:25:30,004 INFO L168 Benchmark]: Witness Printer took 14.62 ms. Allocated memory is still 111.1 MB. Free memory was 83.2 MB in the beginning and 82.7 MB in the end (delta: 516.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:25:30,011 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 92.3 MB. Free memory is still 69.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 346.85 ms. Allocated memory is still 92.3 MB. Free memory was 53.1 MB in the beginning and 67.6 MB in the end (delta: -14.4 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.35 ms. Allocated memory is still 92.3 MB. Free memory was 67.3 MB in the beginning and 66.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.20 ms. Allocated memory is still 92.3 MB. Free memory was 66.0 MB in the beginning and 65.0 MB in the end (delta: 947.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 365.23 ms. Allocated memory is still 92.3 MB. Free memory was 64.8 MB in the beginning and 55.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 472.34 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 54.5 MB in the beginning and 83.2 MB in the end (delta: -28.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 14.62 ms. Allocated memory is still 111.1 MB. Free memory was 83.2 MB in the beginning and 82.7 MB in the end (delta: 516.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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 33, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L24] int counter = 0; [L26] int r; [L27] double a, x; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [counter=0] [L32] EXPR counter++ VAL [counter=1] [L32] COND TRUE counter++<10 [L17] COND TRUE !(cond) VAL [counter=1] [L19] reach_error() VAL [counter=1] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 354.7ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 11.4ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.5ms SsaConstructionTime, 69.0ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2021-10-24 10:25:30,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:25:33,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:25:33,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:25:33,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:25:33,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:25:33,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:25:33,157 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:25:33,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:25:33,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:25:33,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:25:33,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:25:33,173 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:25:33,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:25:33,176 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:25:33,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:25:33,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:25:33,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:25:33,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:25:33,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:25:33,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:25:33,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:25:33,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:25:33,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:25:33,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:25:33,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:25:33,222 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:25:33,222 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:25:33,224 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:25:33,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:25:33,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:25:33,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:25:33,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:25:33,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:25:33,236 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:25:33,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:25:33,239 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:25:33,247 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:25:33,247 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:25:33,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:25:33,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:25:33,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:25:33,252 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-24 10:25:33,289 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:25:33,289 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:25:33,290 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:25:33,291 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:25:33,291 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:25:33,292 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:25:33,292 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:25:33,292 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:25:33,293 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:25:33,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:25:33,294 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:25:33,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:25:33,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:25:33,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:25:33,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:25:33,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:25:33,296 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:25:33,296 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 10:25:33,297 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 10:25:33,297 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:25:33,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:25:33,298 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:25:33,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:25:33,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:25:33,299 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 10:25:33,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:25:33,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:25:33,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:25:33,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:25:33,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:25:33,301 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 10:25:33,301 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 10:25:33,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:25:33,302 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:25:33,302 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:25:33,302 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_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6733f5cb9fc343de68240fd800b3186de8da0c1fcb51c576de9d571eaa34d1a7 [2021-10-24 10:25:33,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:25:33,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:25:33,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:25:33,802 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:25:33,803 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:25:33,804 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound10.c [2021-10-24 10:25:33,905 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/data/166a50f35/285dbc7a4a6f4e9898c759b9438a5b6d/FLAG43a4f05f9 [2021-10-24 10:25:34,623 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:25:34,623 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound10.c [2021-10-24 10:25:34,633 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/data/166a50f35/285dbc7a4a6f4e9898c759b9438a5b6d/FLAG43a4f05f9 [2021-10-24 10:25:34,955 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/data/166a50f35/285dbc7a4a6f4e9898c759b9438a5b6d [2021-10-24 10:25:34,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:25:34,961 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:25:34,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:25:34,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:25:34,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:25:34,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:25:34" (1/1) ... [2021-10-24 10:25:34,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71cae34d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:25:34, skipping insertion in model container [2021-10-24 10:25:34,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:25:34" (1/1) ... [2021-10-24 10:25:35,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:25:35,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:25:35,211 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound10.c[712,725] [2021-10-24 10:25:35,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:25:35,250 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:25:35,293 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound10.c[712,725] [2021-10-24 10:25:35,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:25:35,355 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:25:35,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:25:35 WrapperNode [2021-10-24 10:25:35,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:25:35,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:25:35,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:25:35,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:25:35,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:25:35" (1/1) ... [2021-10-24 10:25:35,380 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:25:35" (1/1) ... [2021-10-24 10:25:35,403 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:25:35,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:25:35,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:25:35,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:25:35,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:25:35" (1/1) ... [2021-10-24 10:25:35,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:25:35" (1/1) ... [2021-10-24 10:25:35,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:25:35" (1/1) ... [2021-10-24 10:25:35,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:25:35" (1/1) ... [2021-10-24 10:25:35,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:25:35" (1/1) ... [2021-10-24 10:25:35,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:25:35" (1/1) ... [2021-10-24 10:25:35,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:25:35" (1/1) ... [2021-10-24 10:25:35,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:25:35,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:25:35,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:25:35,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:25:35,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:25:35" (1/1) ... [2021-10-24 10:25:35,452 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:25:35,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:25:35,505 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:25:35,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:25:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 10:25:35,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:25:35,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:25:35,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:25:41,661 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:25:41,661 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-24 10:25:41,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:25:41 BoogieIcfgContainer [2021-10-24 10:25:41,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:25:41,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:25:41,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:25:41,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:25:41,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:25:34" (1/3) ... [2021-10-24 10:25:41,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@547cbd85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:25:41, skipping insertion in model container [2021-10-24 10:25:41,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:25:35" (2/3) ... [2021-10-24 10:25:41,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@547cbd85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:25:41, skipping insertion in model container [2021-10-24 10:25:41,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:25:41" (3/3) ... [2021-10-24 10:25:41,688 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound10.c [2021-10-24 10:25:41,695 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:25:41,696 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-24 10:25:41,759 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:25:41,768 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:25:41,769 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-24 10:25:41,784 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:25:41,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-24 10:25:41,796 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:25:41,797 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-24 10:25:41,798 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:25:41,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:25:41,820 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-10-24 10:25:41,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:25:41,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [581398280] [2021-10-24 10:25:41,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:25:41,839 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:25:41,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:25:41,846 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:25:41,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 10:25:46,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:25:46,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-24 10:25:46,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:26:07,352 WARN L838 $PredicateComparison]: unable to prove that (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 ULTIMATE.start_main_~a~0) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) is different from false [2021-10-24 10:26:13,913 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 ULTIMATE.start_main_~a~0) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) is different from false [2021-10-24 10:26:15,952 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 ULTIMATE.start_main_~a~0) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) is different from true [2021-10-24 10:26:15,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:26:15,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:26:23,064 WARN L838 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) is different from false [2021-10-24 10:26:25,123 WARN L860 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) is different from true [2021-10-24 10:26:35,447 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))) is different from false [2021-10-24 10:26:37,503 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))) is different from true [2021-10-24 10:26:37,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:26:37,504 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:26:37,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [581398280] [2021-10-24 10:26:37,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [581398280] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:26:37,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:26:37,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-24 10:26:37,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437382283] [2021-10-24 10:26:37,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-24 10:26:37,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:26:37,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-24 10:26:37,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=13, Unknown=7, NotChecked=36, Total=72 [2021-10-24 10:26:37,535 INFO L87 Difference]: Start difference. First operand has 16 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:26:41,714 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-24 10:26:43,768 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-24 10:26:45,824 WARN L838 $PredicateComparison]: unable to prove that (and (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) (= c_ULTIMATE.start_main_~r~0 (_ bv0 32)) (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-24 10:26:47,895 WARN L860 $PredicateComparison]: unable to prove that (and (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) (= c_ULTIMATE.start_main_~r~0 (_ bv0 32)) (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-24 10:26:57,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:26:57,606 INFO L93 Difference]: Finished difference Result 34 states and 45 transitions. [2021-10-24 10:26:57,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:26:57,608 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-24 10:26:57,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:26:57,616 INFO L225 Difference]: With dead ends: 34 [2021-10-24 10:26:57,616 INFO L226 Difference]: Without dead ends: 16 [2021-10-24 10:26:57,619 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 27270.1ms TimeCoverageRelationStatistics Valid=23, Invalid=20, Unknown=11, NotChecked=78, Total=132 [2021-10-24 10:26:57,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-24 10:26:57,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-10-24 10:26:57,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:26:57,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-10-24 10:26:57,659 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 6 [2021-10-24 10:26:57,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:26:57,660 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-10-24 10:26:57,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:26:57,661 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-10-24 10:26:57,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-24 10:26:57,662 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:26:57,662 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:26:57,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-24 10:26:57,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:26:57,876 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:26:57,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:26:57,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1806862075, now seen corresponding path program 1 times [2021-10-24 10:26:57,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:26:57,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2079126489] [2021-10-24 10:26:57,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:26:57,878 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:26:57,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:26:57,882 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:26:57,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 10:26:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:26:58,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 10:26:58,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:26:58,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:26:58,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:26:58,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:26:58,687 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:26:58,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2079126489] [2021-10-24 10:26:58,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2079126489] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:26:58,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:26:58,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-24 10:26:58,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036127841] [2021-10-24 10:26:58,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 10:26:58,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:26:58,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 10:26:58,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:26:58,692 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:27:02,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:27:02,770 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-24 10:27:02,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:27:02,771 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-24 10:27:02,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:27:02,772 INFO L225 Difference]: With dead ends: 19 [2021-10-24 10:27:02,772 INFO L226 Difference]: Without dead ends: 15 [2021-10-24 10:27:02,773 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 126.3ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:27:02,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-24 10:27:02,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-24 10:27:02,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:27:02,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-10-24 10:27:02,778 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 7 [2021-10-24 10:27:02,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:27:02,778 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-24 10:27:02,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:27:02,778 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-10-24 10:27:02,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 10:27:02,779 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:27:02,779 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:27:02,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 10:27:02,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:27:02,980 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:27:02,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:27:02,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1274494228, now seen corresponding path program 1 times [2021-10-24 10:27:02,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:27:02,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [283608246] [2021-10-24 10:27:02,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:27:02,983 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:27:02,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:27:02,985 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:27:02,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 10:27:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:27:03,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-24 10:27:03,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:27:22,416 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)))) (or (and .cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse0)))) is different from false [2021-10-24 10:27:24,487 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)))) (or (and .cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse0)))) is different from true [2021-10-24 10:27:30,706 WARN L838 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) is different from false [2021-10-24 10:27:32,776 WARN L860 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) is different from true [2021-10-24 10:27:45,276 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53)) (ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (ULTIMATE.start_main_~r~0 (_ BitVec 32))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~r~0)) ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) currentRoundingMode ULTIMATE.start_main_~r~0)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) ULTIMATE.start_main_~x~0))) (_ bv0 32))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) is different from false [2021-10-24 10:27:45,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:27:45,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:28:04,096 WARN L838 $PredicateComparison]: unable to prove that (or (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32))) is different from false [2021-10-24 10:28:06,176 WARN L860 $PredicateComparison]: unable to prove that (or (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32))) is different from true [2021-10-24 10:28:06,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:28:06,204 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:28:06,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [283608246] [2021-10-24 10:28:06,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [283608246] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:28:06,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:28:06,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-24 10:28:06,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845159512] [2021-10-24 10:28:06,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-24 10:28:06,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:28:06,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-24 10:28:06,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=4, Unknown=7, NotChecked=20, Total=42 [2021-10-24 10:28:06,208 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:28:10,541 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (.cse0 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)))) (and (or (and .cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (and .cse1 (not .cse0))) (or .cse1 .cse0))) is different from false [2021-10-24 10:28:12,614 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (.cse0 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)))) (and (or (and .cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (and .cse1 (not .cse0))) (or .cse1 .cse0))) is different from true [2021-10-24 10:28:14,691 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53)) (ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (ULTIMATE.start_main_~r~0 (_ BitVec 32))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~r~0)) ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) currentRoundingMode ULTIMATE.start_main_~r~0)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) ULTIMATE.start_main_~x~0))) (_ bv0 32))) (not (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) is different from false [2021-10-24 10:28:16,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:28:16,953 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-10-24 10:28:16,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:28:16,953 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-24 10:28:16,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:28:16,954 INFO L225 Difference]: With dead ends: 19 [2021-10-24 10:28:16,954 INFO L226 Difference]: Without dead ends: 15 [2021-10-24 10:28:16,955 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20818.3ms TimeCoverageRelationStatistics Valid=15, Invalid=5, Unknown=10, NotChecked=42, Total=72 [2021-10-24 10:28:16,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-24 10:28:16,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-24 10:28:16,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:28:16,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-10-24 10:28:16,958 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 9 [2021-10-24 10:28:16,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:28:16,958 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-10-24 10:28:16,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:28:16,959 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-10-24 10:28:16,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 10:28:16,959 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:28:16,959 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-10-24 10:28:16,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-24 10:28:17,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:28:17,160 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:28:17,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:28:17,161 INFO L82 PathProgramCache]: Analyzing trace with hash 855725686, now seen corresponding path program 1 times [2021-10-24 10:28:17,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:28:17,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1394097934] [2021-10-24 10:28:17,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:28:17,163 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:28:17,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:28:17,164 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:28:17,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-24 10:28:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:28:36,005 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:28:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:28:44,222 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-24 10:28:44,222 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:28:44,223 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:28:44,226 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:28:44,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-24 10:28:44,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:28:44,433 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:28:44,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:28:44 BoogieIcfgContainer [2021-10-24 10:28:44,462 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:28:44,463 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:28:44,463 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:28:44,463 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:28:44,464 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:25:41" (3/4) ... [2021-10-24 10:28:44,470 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 10:28:44,539 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:28:44,540 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:28:44,541 INFO L168 Benchmark]: Toolchain (without parser) took 189579.90 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 35.1 MB in the beginning and 29.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:28:44,559 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 56.6 MB. Free memory is still 37.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:28:44,559 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.60 ms. Allocated memory is still 56.6 MB. Free memory was 34.8 MB in the beginning and 39.6 MB in the end (delta: -4.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:28:44,561 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.33 ms. Allocated memory is still 56.6 MB. Free memory was 39.6 MB in the beginning and 38.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:28:44,561 INFO L168 Benchmark]: Boogie Preprocessor took 35.42 ms. Allocated memory is still 56.6 MB. Free memory was 38.1 MB in the beginning and 36.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:28:44,564 INFO L168 Benchmark]: RCFGBuilder took 6223.21 ms. Allocated memory is still 56.6 MB. Free memory was 36.8 MB in the beginning and 27.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:28:44,565 INFO L168 Benchmark]: TraceAbstraction took 182782.73 ms. Allocated memory is still 69.2 MB. Free memory was 52.7 MB in the beginning and 31.8 MB in the end (delta: 21.0 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:28:44,565 INFO L168 Benchmark]: Witness Printer took 76.81 ms. Allocated memory is still 69.2 MB. Free memory was 31.8 MB in the beginning and 29.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:28:44,568 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 56.6 MB. Free memory is still 37.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 373.60 ms. Allocated memory is still 56.6 MB. Free memory was 34.8 MB in the beginning and 39.6 MB in the end (delta: -4.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.33 ms. Allocated memory is still 56.6 MB. Free memory was 39.6 MB in the beginning and 38.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.42 ms. Allocated memory is still 56.6 MB. Free memory was 38.1 MB in the beginning and 36.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 6223.21 ms. Allocated memory is still 56.6 MB. Free memory was 36.8 MB in the beginning and 27.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 182782.73 ms. Allocated memory is still 69.2 MB. Free memory was 52.7 MB in the beginning and 31.8 MB in the end (delta: 21.0 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. * Witness Printer took 76.81 ms. Allocated memory is still 69.2 MB. Free memory was 31.8 MB in the beginning and 29.6 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: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [counter=0] [L32] EXPR counter++ VAL [counter=1] [L32] COND TRUE counter++<10 [L17] COND FALSE !(!(cond)) VAL [counter=1] [L35] COND FALSE !(!(x > r)) [L37] x = x - r [L38] r = r + 1 VAL [counter=1] [L32] EXPR counter++ VAL [counter=2] [L32] COND TRUE counter++<10 [L17] COND TRUE !(cond) VAL [counter=2] [L19] reach_error() VAL [counter=2] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 182675.0ms, OverallIterations: 4, TraceHistogramMax: 2, EmptinessCheckTime: 18.1ms, AutomataDifference: 34935.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 36 SDtfs, 8 SDslu, 64 SDs, 0 SdLazy, 17 SolverSat, 3 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 19764.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 48214.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 30.7ms AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 81.1ms SsaConstructionTime, 24207.5ms SatisfiabilityAnalysisTime, 114084.0ms InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 38 ConstructedInterpolants, 4 QuantifiedInterpolants, 440 SizeOfPredicates, 13 NumberOfNonLiveVariables, 103 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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! [2021-10-24 10:28:44,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b02ddeb-89a6-4d32-bd5d-0cb920d619dc/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...