./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8 --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 f4f20531c98faa0af8884f2ddaf47888911b3a46 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8 --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 f4f20531c98faa0af8884f2ddaf47888911b3a46 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-4e77c04 [2021-10-13 07:41:39,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:41:39,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:41:39,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:41:39,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:41:39,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:41:39,326 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:41:39,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:41:39,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:41:39,333 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:41:39,335 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:41:39,337 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:41:39,338 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:41:39,339 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:41:39,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:41:39,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:41:39,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:41:39,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:41:39,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:41:39,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:41:39,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:41:39,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:41:39,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:41:39,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:41:39,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:41:39,385 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:41:39,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:41:39,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:41:39,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:41:39,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:41:39,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:41:39,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:41:39,395 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:41:39,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:41:39,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:41:39,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:41:39,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:41:39,402 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:41:39,402 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:41:39,403 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:41:39,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:41:39,405 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:41:39,466 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:41:39,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:41:39,468 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:41:39,469 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:41:39,469 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:41:39,469 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:41:39,470 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:41:39,470 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:41:39,470 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:41:39,471 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:41:39,472 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:41:39,473 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:41:39,473 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:41:39,473 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:41:39,474 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:41:39,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:41:39,475 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:41:39,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:41:39,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:41:39,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:41:39,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:41:39,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:41:39,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:41:39,477 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:41:39,478 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:41:39,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:41:39,478 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:41:39,479 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:41:39,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:41:39,481 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:41:39,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:41:39,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:41:39,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:41:39,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:41:39,483 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:41:39,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:41:39,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:41:39,484 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:41:39,485 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:41:39,485 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_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4f20531c98faa0af8884f2ddaf47888911b3a46 [2021-10-13 07:41:39,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:41:39,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:41:39,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:41:39,837 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:41:39,838 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:41:39,839 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2021-10-13 07:41:39,919 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/data/c7dcd96bf/10a7e9e4a080475f8b0cbfcf41358d94/FLAG39540e28f [2021-10-13 07:41:40,542 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:41:40,543 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2021-10-13 07:41:40,553 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/data/c7dcd96bf/10a7e9e4a080475f8b0cbfcf41358d94/FLAG39540e28f [2021-10-13 07:41:40,838 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/data/c7dcd96bf/10a7e9e4a080475f8b0cbfcf41358d94 [2021-10-13 07:41:40,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:41:40,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:41:40,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:41:40,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:41:40,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:41:40,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:41:40" (1/1) ... [2021-10-13 07:41:40,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4939c8a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:40, skipping insertion in model container [2021-10-13 07:41:40,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:41:40" (1/1) ... [2021-10-13 07:41:40,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:41:40,892 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:41:41,063 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_b59e2900-7640-48fa-83da-6b2c9d076511/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c[425,438] [2021-10-13 07:41:41,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:41:41,128 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:41:41,141 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_b59e2900-7640-48fa-83da-6b2c9d076511/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c[425,438] [2021-10-13 07:41:41,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:41:41,192 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:41:41,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:41 WrapperNode [2021-10-13 07:41:41,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:41:41,194 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:41:41,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:41:41,195 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:41:41,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:41" (1/1) ... [2021-10-13 07:41:41,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:41" (1/1) ... [2021-10-13 07:41:41,266 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:41:41,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:41:41,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:41:41,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:41:41,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:41" (1/1) ... [2021-10-13 07:41:41,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:41" (1/1) ... [2021-10-13 07:41:41,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:41" (1/1) ... [2021-10-13 07:41:41,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:41" (1/1) ... [2021-10-13 07:41:41,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:41" (1/1) ... [2021-10-13 07:41:41,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:41" (1/1) ... [2021-10-13 07:41:41,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:41" (1/1) ... [2021-10-13 07:41:41,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:41:41,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:41:41,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:41:41,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:41:41,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:41" (1/1) ... [2021-10-13 07:41:41,342 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:41:41,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:41:41,367 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:41:41,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:41:41,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:41:41,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:41:41,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:41:41,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:41:42,404 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:41:42,406 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-13 07:41:42,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:41:42 BoogieIcfgContainer [2021-10-13 07:41:42,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:41:42,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:41:42,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:41:42,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:41:42,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:41:40" (1/3) ... [2021-10-13 07:41:42,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c536827 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:41:42, skipping insertion in model container [2021-10-13 07:41:42,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:41" (2/3) ... [2021-10-13 07:41:42,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c536827 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:41:42, skipping insertion in model container [2021-10-13 07:41:42,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:41:42" (3/3) ... [2021-10-13 07:41:42,421 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2021-10-13 07:41:42,428 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:41:42,428 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-13 07:41:42,500 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:41:42,511 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, mConcurrency=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 [2021-10-13 07:41:42,512 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-13 07:41:42,534 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 59 states have (on average 1.7457627118644068) internal successors, (103), 65 states have internal predecessors, (103), 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) [2021-10-13 07:41:42,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:41:42,548 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:41:42,549 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:41:42,550 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:41:42,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:41:42,566 INFO L82 PathProgramCache]: Analyzing trace with hash 68680612, now seen corresponding path program 1 times [2021-10-13 07:41:42,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:41:42,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753252925] [2021-10-13 07:41:42,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:41:42,579 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:41:42,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:41:43,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:43,055 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:41:43,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753252925] [2021-10-13 07:41:43,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753252925] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:41:43,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:41:43,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 07:41:43,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647541718] [2021-10-13 07:41:43,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:41:43,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:41:43,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:41:43,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:41:43,094 INFO L87 Difference]: Start difference. First operand has 66 states, 59 states have (on average 1.7457627118644068) internal successors, (103), 65 states have internal predecessors, (103), 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 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) [2021-10-13 07:41:43,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:41:43,366 INFO L93 Difference]: Finished difference Result 210 states and 311 transitions. [2021-10-13 07:41:43,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:41:43,369 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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 10 [2021-10-13 07:41:43,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:41:43,390 INFO L225 Difference]: With dead ends: 210 [2021-10-13 07:41:43,390 INFO L226 Difference]: Without dead ends: 145 [2021-10-13 07:41:43,396 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 58.8ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:41:43,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-13 07:41:43,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 66. [2021-10-13 07:41:43,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 60 states have (on average 1.5) internal successors, (90), 65 states have internal predecessors, (90), 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) [2021-10-13 07:41:43,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 90 transitions. [2021-10-13 07:41:43,468 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 90 transitions. Word has length 10 [2021-10-13 07:41:43,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:41:43,471 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 90 transitions. [2021-10-13 07:41:43,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 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) [2021-10-13 07:41:43,472 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 90 transitions. [2021-10-13 07:41:43,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 07:41:43,476 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:41:43,477 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:41:43,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:41:43,478 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:41:43,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:41:43,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1768782671, now seen corresponding path program 1 times [2021-10-13 07:41:43,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:41:43,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529682997] [2021-10-13 07:41:43,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:41:43,484 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:41:43,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:41:43,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:43,747 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:41:43,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529682997] [2021-10-13 07:41:43,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529682997] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:41:43,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:41:43,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 07:41:43,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023051053] [2021-10-13 07:41:43,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:41:43,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:41:43,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:41:43,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:41:43,754 INFO L87 Difference]: Start difference. First operand 66 states and 90 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) [2021-10-13 07:41:43,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:41:43,962 INFO L93 Difference]: Finished difference Result 215 states and 274 transitions. [2021-10-13 07:41:43,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:41:43,963 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 13 [2021-10-13 07:41:43,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:41:43,968 INFO L225 Difference]: With dead ends: 215 [2021-10-13 07:41:43,969 INFO L226 Difference]: Without dead ends: 201 [2021-10-13 07:41:43,970 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 84.6ms TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:41:43,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-10-13 07:41:43,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 98. [2021-10-13 07:41:43,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 92 states have (on average 1.5108695652173914) internal successors, (139), 97 states have internal predecessors, (139), 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) [2021-10-13 07:41:43,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 139 transitions. [2021-10-13 07:41:43,998 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 139 transitions. Word has length 13 [2021-10-13 07:41:43,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:41:43,999 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 139 transitions. [2021-10-13 07:41:43,999 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) [2021-10-13 07:41:44,000 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 139 transitions. [2021-10-13 07:41:44,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 07:41:44,001 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:41:44,002 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:41:44,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:41:44,002 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:41:44,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:41:44,004 INFO L82 PathProgramCache]: Analyzing trace with hash -953037586, now seen corresponding path program 1 times [2021-10-13 07:41:44,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:41:44,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180462385] [2021-10-13 07:41:44,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:41:44,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:41:44,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:41:44,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:44,762 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:41:44,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180462385] [2021-10-13 07:41:44,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180462385] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:41:44,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:41:44,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 07:41:44,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455875781] [2021-10-13 07:41:44,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 07:41:44,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:41:44,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 07:41:44,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-13 07:41:44,771 INFO L87 Difference]: Start difference. First operand 98 states and 139 transitions. Second operand has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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) [2021-10-13 07:41:45,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:41:45,528 INFO L93 Difference]: Finished difference Result 228 states and 292 transitions. [2021-10-13 07:41:45,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 07:41:45,529 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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 14 [2021-10-13 07:41:45,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:41:45,530 INFO L225 Difference]: With dead ends: 228 [2021-10-13 07:41:45,531 INFO L226 Difference]: Without dead ends: 224 [2021-10-13 07:41:45,531 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 590.2ms TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2021-10-13 07:41:45,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-10-13 07:41:45,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 101. [2021-10-13 07:41:45,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 95 states have (on average 1.4947368421052631) internal successors, (142), 100 states have internal predecessors, (142), 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) [2021-10-13 07:41:45,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 142 transitions. [2021-10-13 07:41:45,552 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 142 transitions. Word has length 14 [2021-10-13 07:41:45,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:41:45,553 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 142 transitions. [2021-10-13 07:41:45,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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) [2021-10-13 07:41:45,553 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 142 transitions. [2021-10-13 07:41:45,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 07:41:45,556 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:41:45,556 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:41:45,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:41:45,556 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:41:45,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:41:45,557 INFO L82 PathProgramCache]: Analyzing trace with hash 565696089, now seen corresponding path program 1 times [2021-10-13 07:41:45,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:41:45,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812137358] [2021-10-13 07:41:45,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:41:45,559 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:41:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:41:45,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:45,743 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:41:45,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812137358] [2021-10-13 07:41:45,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812137358] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:41:45,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:41:45,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 07:41:45,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100725755] [2021-10-13 07:41:45,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:41:45,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:41:45,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:41:45,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:41:45,752 INFO L87 Difference]: Start difference. First operand 101 states and 142 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-10-13 07:41:45,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:41:45,842 INFO L93 Difference]: Finished difference Result 213 states and 274 transitions. [2021-10-13 07:41:45,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:41:45,843 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2021-10-13 07:41:45,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:41:45,844 INFO L225 Difference]: With dead ends: 213 [2021-10-13 07:41:45,845 INFO L226 Difference]: Without dead ends: 169 [2021-10-13 07:41:45,846 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 32.6ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:41:45,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-10-13 07:41:45,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 101. [2021-10-13 07:41:45,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 95 states have (on average 1.4842105263157894) internal successors, (141), 100 states have internal predecessors, (141), 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) [2021-10-13 07:41:45,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 141 transitions. [2021-10-13 07:41:45,865 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 141 transitions. Word has length 14 [2021-10-13 07:41:45,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:41:45,865 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 141 transitions. [2021-10-13 07:41:45,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-10-13 07:41:45,867 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 141 transitions. [2021-10-13 07:41:45,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-13 07:41:45,873 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:41:45,873 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:41:45,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 07:41:45,874 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:41:45,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:41:45,875 INFO L82 PathProgramCache]: Analyzing trace with hash 519328109, now seen corresponding path program 1 times [2021-10-13 07:41:45,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:41:45,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436053051] [2021-10-13 07:41:45,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:41:45,876 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:41:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:41:46,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:46,021 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:41:46,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436053051] [2021-10-13 07:41:46,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436053051] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:41:46,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:41:46,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 07:41:46,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108383418] [2021-10-13 07:41:46,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:41:46,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:41:46,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:41:46,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:41:46,024 INFO L87 Difference]: Start difference. First operand 101 states and 141 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 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) [2021-10-13 07:41:46,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:41:46,150 INFO L93 Difference]: Finished difference Result 195 states and 252 transitions. [2021-10-13 07:41:46,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:41:46,151 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 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) Word has length 15 [2021-10-13 07:41:46,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:41:46,152 INFO L225 Difference]: With dead ends: 195 [2021-10-13 07:41:46,152 INFO L226 Difference]: Without dead ends: 185 [2021-10-13 07:41:46,153 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 51.4ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-10-13 07:41:46,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-10-13 07:41:46,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 97. [2021-10-13 07:41:46,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 91 states have (on average 1.4835164835164836) internal successors, (135), 96 states have internal predecessors, (135), 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) [2021-10-13 07:41:46,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 135 transitions. [2021-10-13 07:41:46,166 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 135 transitions. Word has length 15 [2021-10-13 07:41:46,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:41:46,167 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 135 transitions. [2021-10-13 07:41:46,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 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) [2021-10-13 07:41:46,167 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 135 transitions. [2021-10-13 07:41:46,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 07:41:46,170 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:41:46,170 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:41:46,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 07:41:46,170 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:41:46,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:41:46,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1588871102, now seen corresponding path program 1 times [2021-10-13 07:41:46,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:41:46,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659644931] [2021-10-13 07:41:46,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:41:46,172 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:41:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:41:46,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:46,313 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:41:46,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659644931] [2021-10-13 07:41:46,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659644931] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:41:46,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:41:46,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 07:41:46,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44480185] [2021-10-13 07:41:46,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:41:46,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:41:46,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:41:46,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:41:46,318 INFO L87 Difference]: Start difference. First operand 97 states and 135 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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) [2021-10-13 07:41:46,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:41:46,416 INFO L93 Difference]: Finished difference Result 188 states and 242 transitions. [2021-10-13 07:41:46,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 07:41:46,418 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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) Word has length 17 [2021-10-13 07:41:46,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:41:46,419 INFO L225 Difference]: With dead ends: 188 [2021-10-13 07:41:46,420 INFO L226 Difference]: Without dead ends: 175 [2021-10-13 07:41:46,420 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 44.5ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:41:46,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-10-13 07:41:46,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 102. [2021-10-13 07:41:46,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 96 states have (on average 1.46875) internal successors, (141), 101 states have internal predecessors, (141), 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) [2021-10-13 07:41:46,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 141 transitions. [2021-10-13 07:41:46,428 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 141 transitions. Word has length 17 [2021-10-13 07:41:46,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:41:46,428 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 141 transitions. [2021-10-13 07:41:46,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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) [2021-10-13 07:41:46,429 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 141 transitions. [2021-10-13 07:41:46,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 07:41:46,430 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:41:46,430 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:41:46,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 07:41:46,431 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:41:46,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:41:46,432 INFO L82 PathProgramCache]: Analyzing trace with hash 122373411, now seen corresponding path program 1 times [2021-10-13 07:41:46,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:41:46,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612602147] [2021-10-13 07:41:46,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:41:46,438 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:41:46,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:41:47,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:47,053 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:41:47,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612602147] [2021-10-13 07:41:47,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612602147] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:41:47,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:41:47,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 07:41:47,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391390868] [2021-10-13 07:41:47,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 07:41:47,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:41:47,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 07:41:47,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-13 07:41:47,056 INFO L87 Difference]: Start difference. First operand 102 states and 141 transitions. Second operand has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 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) [2021-10-13 07:41:48,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:41:48,120 INFO L93 Difference]: Finished difference Result 171 states and 224 transitions. [2021-10-13 07:41:48,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 07:41:48,121 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 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 18 [2021-10-13 07:41:48,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:41:48,123 INFO L225 Difference]: With dead ends: 171 [2021-10-13 07:41:48,123 INFO L226 Difference]: Without dead ends: 152 [2021-10-13 07:41:48,124 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1012.1ms TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2021-10-13 07:41:48,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-13 07:41:48,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 87. [2021-10-13 07:41:48,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 81 states have (on average 1.4814814814814814) internal successors, (120), 86 states have internal predecessors, (120), 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) [2021-10-13 07:41:48,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 120 transitions. [2021-10-13 07:41:48,132 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 120 transitions. Word has length 18 [2021-10-13 07:41:48,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:41:48,133 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 120 transitions. [2021-10-13 07:41:48,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 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) [2021-10-13 07:41:48,133 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 120 transitions. [2021-10-13 07:41:48,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 07:41:48,134 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:41:48,134 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:41:48,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 07:41:48,135 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:41:48,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:41:48,136 INFO L82 PathProgramCache]: Analyzing trace with hash 2059638367, now seen corresponding path program 1 times [2021-10-13 07:41:48,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:41:48,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288392621] [2021-10-13 07:41:48,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:41:48,137 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:41:48,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:41:48,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:48,256 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:41:48,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288392621] [2021-10-13 07:41:48,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288392621] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:41:48,257 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:41:48,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-13 07:41:48,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746345821] [2021-10-13 07:41:48,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:41:48,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:41:48,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:41:48,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:41:48,259 INFO L87 Difference]: Start difference. First operand 87 states and 120 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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) [2021-10-13 07:41:48,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:41:48,513 INFO L93 Difference]: Finished difference Result 297 states and 369 transitions. [2021-10-13 07:41:48,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 07:41:48,514 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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 18 [2021-10-13 07:41:48,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:41:48,516 INFO L225 Difference]: With dead ends: 297 [2021-10-13 07:41:48,517 INFO L226 Difference]: Without dead ends: 293 [2021-10-13 07:41:48,517 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 140.2ms TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2021-10-13 07:41:48,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-10-13 07:41:48,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 124. [2021-10-13 07:41:48,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 118 states have (on average 1.5) internal successors, (177), 123 states have internal predecessors, (177), 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) [2021-10-13 07:41:48,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 177 transitions. [2021-10-13 07:41:48,528 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 177 transitions. Word has length 18 [2021-10-13 07:41:48,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:41:48,528 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 177 transitions. [2021-10-13 07:41:48,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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) [2021-10-13 07:41:48,529 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 177 transitions. [2021-10-13 07:41:48,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 07:41:48,530 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:41:48,530 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:41:48,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 07:41:48,530 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:41:48,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:41:48,531 INFO L82 PathProgramCache]: Analyzing trace with hash -716595254, now seen corresponding path program 1 times [2021-10-13 07:41:48,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:41:48,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841579571] [2021-10-13 07:41:48,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:41:48,532 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:41:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:41:48,562 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:41:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:41:48,622 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 07:41:48,623 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:41:48,624 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:41:48,629 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:41:48,630 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:41:48,630 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:41:48,630 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:41:48,631 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:41:48,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 07:41:48,637 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:41:48,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:41:48 BoogieIcfgContainer [2021-10-13 07:41:48,703 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:41:48,705 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:41:48,705 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:41:48,705 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:41:48,706 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:41:42" (3/4) ... [2021-10-13 07:41:48,709 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 07:41:48,709 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:41:48,713 INFO L168 Benchmark]: Toolchain (without parser) took 7867.58 ms. Allocated memory was 115.3 MB in the beginning and 182.5 MB in the end (delta: 67.1 MB). Free memory was 84.4 MB in the beginning and 74.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 77.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:41:48,713 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 115.3 MB. Free memory is still 67.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:41:48,716 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.20 ms. Allocated memory was 115.3 MB in the beginning and 151.0 MB in the end (delta: 35.7 MB). Free memory was 84.1 MB in the beginning and 121.0 MB in the end (delta: -36.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:41:48,717 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.81 ms. Allocated memory is still 151.0 MB. Free memory was 121.0 MB in the beginning and 118.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:41:48,717 INFO L168 Benchmark]: Boogie Preprocessor took 65.34 ms. Allocated memory is still 151.0 MB. Free memory was 118.9 MB in the beginning and 117.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:41:48,718 INFO L168 Benchmark]: RCFGBuilder took 1076.84 ms. Allocated memory is still 151.0 MB. Free memory was 117.4 MB in the beginning and 85.9 MB in the end (delta: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:41:48,718 INFO L168 Benchmark]: TraceAbstraction took 6292.52 ms. Allocated memory was 151.0 MB in the beginning and 182.5 MB in the end (delta: 31.5 MB). Free memory was 85.3 MB in the beginning and 75.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 43.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:41:48,719 INFO L168 Benchmark]: Witness Printer took 4.57 ms. Allocated memory is still 182.5 MB. Free memory was 75.4 MB in the beginning and 74.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:41:48,723 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 115.3 MB. Free memory is still 67.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 349.20 ms. Allocated memory was 115.3 MB in the beginning and 151.0 MB in the end (delta: 35.7 MB). Free memory was 84.1 MB in the beginning and 121.0 MB in the end (delta: -36.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.81 ms. Allocated memory is still 151.0 MB. Free memory was 121.0 MB in the beginning and 118.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.34 ms. Allocated memory is still 151.0 MB. Free memory was 118.9 MB in the beginning and 117.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1076.84 ms. Allocated memory is still 151.0 MB. Free memory was 117.4 MB in the beginning and 85.9 MB in the end (delta: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6292.52 ms. Allocated memory was 151.0 MB in the beginning and 182.5 MB in the end (delta: 31.5 MB). Free memory was 85.3 MB in the beginning and 75.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 43.2 MB. Max. memory is 16.1 GB. * Witness Printer took 4.57 ms. Allocated memory is still 182.5 MB. Free memory was 75.4 MB in the beginning and 74.4 MB in the end (delta: 1.1 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 - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 102, overapproximation of bitwiseAnd at line 100. Possible FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add ; [L225] unsigned int zero ; [L226] int sa ; [L227] int sb ; [L228] int tmp ; [L229] int tmp___0 ; [L230] int tmp___1 ; [L231] int tmp___2 ; [L232] int tmp___3 ; [L233] int tmp___4 ; [L234] int tmp___5 ; [L235] int tmp___6 ; [L236] int tmp___7 ; [L237] int tmp___8 ; [L238] int tmp___9 ; [L239] int __retres23 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L243] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L244] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L245] b = base2flt(mb, eb) [L247] COND FALSE !(a < zero) [L250] COND TRUE a > zero [L251] tmp = 1 [L255] sa = tmp [L257] COND FALSE !(b < zero) [L260] COND TRUE b > zero [L261] tmp___0 = 1 [L265] sb = tmp___0 [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L8] COND TRUE !(cond) [L9] reach_error() - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: 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, 66 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 6138.0ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 37.6ms, AutomataDifference: 2964.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 17.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 732 SDtfs, 1639 SDslu, 3336 SDs, 0 SdLazy, 604 SolverSat, 114 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 839.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 2014.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=124occurred in iteration=8, InterpolantAutomatonStates: 86, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 158.4ms AutomataMinimizationTime, 8 MinimizatonAttempts, 768 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 43.1ms SsaConstructionTime, 638.8ms SatisfiabilityAnalysisTime, 1935.5ms InterpolantComputationTime, 137 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 111 ConstructedInterpolants, 0 QuantifiedInterpolants, 908 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 [2021-10-13 07:41:48,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/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-4e77c04 [2021-10-13 07:41:51,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:41:51,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:41:51,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:41:51,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:41:51,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:41:51,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:41:51,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:41:51,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:41:51,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:41:51,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:41:51,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:41:51,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:41:51,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:41:51,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:41:51,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:41:51,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:41:51,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:41:51,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:41:51,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:41:51,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:41:51,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:41:51,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:41:51,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:41:51,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:41:51,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:41:51,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:41:51,352 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:41:51,353 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:41:51,354 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:41:51,354 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:41:51,355 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:41:51,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:41:51,358 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:41:51,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:41:51,360 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:41:51,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:41:51,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:41:51,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:41:51,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:41:51,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:41:51,366 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:41:51,411 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:41:51,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:41:51,413 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:41:51,413 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:41:51,413 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:41:51,414 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:41:51,414 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:41:51,414 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:41:51,414 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:41:51,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:41:51,417 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:41:51,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:41:51,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:41:51,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:41:51,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:41:51,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:41:51,419 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:41:51,419 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:41:51,419 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:41:51,420 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:41:51,420 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:41:51,420 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:41:51,421 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:41:51,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:41:51,421 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:41:51,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:41:51,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:41:51,422 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:41:51,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:41:51,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:41:51,423 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:41:51,423 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:41:51,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:41:51,424 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:41:51,424 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:41:51,425 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_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4f20531c98faa0af8884f2ddaf47888911b3a46 [2021-10-13 07:41:51,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:41:51,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:41:51,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:41:51,875 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:41:51,875 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:41:51,878 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2021-10-13 07:41:51,945 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/data/ee4e91e09/498de8a699e44cdab96118f15e633820/FLAG59a2bb878 [2021-10-13 07:41:52,531 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:41:52,531 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2021-10-13 07:41:52,545 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/data/ee4e91e09/498de8a699e44cdab96118f15e633820/FLAG59a2bb878 [2021-10-13 07:41:52,839 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/data/ee4e91e09/498de8a699e44cdab96118f15e633820 [2021-10-13 07:41:52,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:41:52,844 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:41:52,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:41:52,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:41:52,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:41:52,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:41:52" (1/1) ... [2021-10-13 07:41:52,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e4429c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:52, skipping insertion in model container [2021-10-13 07:41:52,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:41:52" (1/1) ... [2021-10-13 07:41:52,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:41:52,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:41:53,068 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_b59e2900-7640-48fa-83da-6b2c9d076511/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c[425,438] [2021-10-13 07:41:53,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:41:53,137 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:41:53,185 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_b59e2900-7640-48fa-83da-6b2c9d076511/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c[425,438] [2021-10-13 07:41:53,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:41:53,254 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:41:53,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:53 WrapperNode [2021-10-13 07:41:53,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:41:53,256 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:41:53,256 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:41:53,256 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:41:53,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:53" (1/1) ... [2021-10-13 07:41:53,275 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:53" (1/1) ... [2021-10-13 07:41:53,311 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:41:53,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:41:53,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:41:53,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:41:53,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:53" (1/1) ... [2021-10-13 07:41:53,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:53" (1/1) ... [2021-10-13 07:41:53,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:53" (1/1) ... [2021-10-13 07:41:53,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:53" (1/1) ... [2021-10-13 07:41:53,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:53" (1/1) ... [2021-10-13 07:41:53,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:53" (1/1) ... [2021-10-13 07:41:53,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:53" (1/1) ... [2021-10-13 07:41:53,352 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:41:53,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:41:53,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:41:53,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:41:53,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:53" (1/1) ... [2021-10-13 07:41:53,360 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:41:53,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:41:53,392 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:41:53,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:41:53,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:41:53,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:41:53,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:41:53,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:41:54,069 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:41:54,069 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-13 07:41:54,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:41:54 BoogieIcfgContainer [2021-10-13 07:41:54,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:41:54,074 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:41:54,074 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:41:54,077 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:41:54,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:41:52" (1/3) ... [2021-10-13 07:41:54,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e8ea470 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:41:54, skipping insertion in model container [2021-10-13 07:41:54,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:41:53" (2/3) ... [2021-10-13 07:41:54,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e8ea470 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:41:54, skipping insertion in model container [2021-10-13 07:41:54,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:41:54" (3/3) ... [2021-10-13 07:41:54,081 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2021-10-13 07:41:54,087 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:41:54,087 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-13 07:41:54,138 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:41:54,145 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, mConcurrency=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 [2021-10-13 07:41:54,145 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-13 07:41:54,164 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 89 states have (on average 1.7303370786516854) internal successors, (154), 95 states have internal predecessors, (154), 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) [2021-10-13 07:41:54,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 07:41:54,171 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:41:54,171 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:41:54,172 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:41:54,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:41:54,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1626643796, now seen corresponding path program 1 times [2021-10-13 07:41:54,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:41:54,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346113027] [2021-10-13 07:41:54,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:41:54,193 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:41:54,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:41:54,196 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:41:54,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:41:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:41:54,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:41:54,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:41:54,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:54,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:41:54,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:54,649 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:41:54,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346113027] [2021-10-13 07:41:54,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346113027] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:41:54,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:41:54,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 07:41:54,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767407708] [2021-10-13 07:41:54,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:41:54,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:41:54,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:41:54,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:41:54,678 INFO L87 Difference]: Start difference. First operand has 96 states, 89 states have (on average 1.7303370786516854) internal successors, (154), 95 states have internal predecessors, (154), 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 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-10-13 07:41:54,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:41:54,889 INFO L93 Difference]: Finished difference Result 397 states and 607 transitions. [2021-10-13 07:41:54,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:41:54,891 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 18 [2021-10-13 07:41:54,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:41:54,905 INFO L225 Difference]: With dead ends: 397 [2021-10-13 07:41:54,906 INFO L226 Difference]: Without dead ends: 295 [2021-10-13 07:41:54,909 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 45.7ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:41:54,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-10-13 07:41:54,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 120. [2021-10-13 07:41:54,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 114 states have (on average 1.5087719298245614) internal successors, (172), 119 states have internal predecessors, (172), 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) [2021-10-13 07:41:54,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 172 transitions. [2021-10-13 07:41:54,960 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 172 transitions. Word has length 18 [2021-10-13 07:41:54,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:41:54,961 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 172 transitions. [2021-10-13 07:41:54,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-10-13 07:41:54,961 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 172 transitions. [2021-10-13 07:41:54,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 07:41:54,963 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:41:54,963 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:41:54,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:41:55,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:41:55,170 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:41:55,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:41:55,171 INFO L82 PathProgramCache]: Analyzing trace with hash -908455500, now seen corresponding path program 1 times [2021-10-13 07:41:55,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:41:55,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [944345002] [2021-10-13 07:41:55,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:41:55,174 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:41:55,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:41:55,175 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:41:55,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:41:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:41:55,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:41:55,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:41:55,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:55,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:41:55,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:55,435 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:41:55,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [944345002] [2021-10-13 07:41:55,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [944345002] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:41:55,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:41:55,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 07:41:55,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053700053] [2021-10-13 07:41:55,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:41:55,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:41:55,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:41:55,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:41:55,440 INFO L87 Difference]: Start difference. First operand 120 states and 172 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2021-10-13 07:41:55,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:41:55,685 INFO L93 Difference]: Finished difference Result 394 states and 543 transitions. [2021-10-13 07:41:55,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:41:55,686 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 22 [2021-10-13 07:41:55,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:41:55,691 INFO L225 Difference]: With dead ends: 394 [2021-10-13 07:41:55,691 INFO L226 Difference]: Without dead ends: 337 [2021-10-13 07:41:55,693 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 60.4ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:41:55,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-10-13 07:41:55,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 186. [2021-10-13 07:41:55,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 180 states have (on average 1.4944444444444445) internal successors, (269), 185 states have internal predecessors, (269), 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) [2021-10-13 07:41:55,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 269 transitions. [2021-10-13 07:41:55,753 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 269 transitions. Word has length 22 [2021-10-13 07:41:55,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:41:55,755 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 269 transitions. [2021-10-13 07:41:55,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2021-10-13 07:41:55,757 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 269 transitions. [2021-10-13 07:41:55,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 07:41:55,760 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:41:55,761 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:41:55,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:41:55,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:41:55,967 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:41:55,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:41:55,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1301482510, now seen corresponding path program 1 times [2021-10-13 07:41:55,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:41:55,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850330723] [2021-10-13 07:41:55,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:41:55,970 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:41:55,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:41:55,978 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:41:56,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:41:56,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:41:56,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:41:56,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:41:56,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:56,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:41:56,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:56,319 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:41:56,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1850330723] [2021-10-13 07:41:56,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1850330723] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:41:56,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:41:56,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-13 07:41:56,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419083085] [2021-10-13 07:41:56,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 07:41:56,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:41:56,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 07:41:56,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:41:56,333 INFO L87 Difference]: Start difference. First operand 186 states and 269 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2021-10-13 07:41:56,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:41:56,497 INFO L93 Difference]: Finished difference Result 378 states and 535 transitions. [2021-10-13 07:41:56,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:41:56,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 22 [2021-10-13 07:41:56,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:41:56,500 INFO L225 Difference]: With dead ends: 378 [2021-10-13 07:41:56,501 INFO L226 Difference]: Without dead ends: 295 [2021-10-13 07:41:56,502 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:41:56,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-10-13 07:41:56,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 278. [2021-10-13 07:41:56,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 272 states have (on average 1.474264705882353) internal successors, (401), 277 states have internal predecessors, (401), 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) [2021-10-13 07:41:56,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 401 transitions. [2021-10-13 07:41:56,527 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 401 transitions. Word has length 22 [2021-10-13 07:41:56,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:41:56,528 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 401 transitions. [2021-10-13 07:41:56,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2021-10-13 07:41:56,528 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 401 transitions. [2021-10-13 07:41:56,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 07:41:56,530 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:41:56,530 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:41:56,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:41:56,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:41:56,741 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:41:56,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:41:56,742 INFO L82 PathProgramCache]: Analyzing trace with hash 473524852, now seen corresponding path program 1 times [2021-10-13 07:41:56,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:41:56,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1949286161] [2021-10-13 07:41:56,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:41:56,744 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:41:56,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:41:56,745 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:41:56,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 07:41:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:41:56,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 07:41:56,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:41:56,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:56,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:41:57,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:57,028 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:41:57,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1949286161] [2021-10-13 07:41:57,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1949286161] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:41:57,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:41:57,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-10-13 07:41:57,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344283566] [2021-10-13 07:41:57,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:41:57,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:41:57,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:41:57,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:41:57,033 INFO L87 Difference]: Start difference. First operand 278 states and 401 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-10-13 07:41:57,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:41:57,190 INFO L93 Difference]: Finished difference Result 395 states and 553 transitions. [2021-10-13 07:41:57,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 07:41:57,191 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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 22 [2021-10-13 07:41:57,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:41:57,194 INFO L225 Difference]: With dead ends: 395 [2021-10-13 07:41:57,194 INFO L226 Difference]: Without dead ends: 318 [2021-10-13 07:41:57,198 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.2ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:41:57,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-10-13 07:41:57,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 258. [2021-10-13 07:41:57,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 252 states have (on average 1.4484126984126984) internal successors, (365), 257 states have internal predecessors, (365), 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) [2021-10-13 07:41:57,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 365 transitions. [2021-10-13 07:41:57,238 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 365 transitions. Word has length 22 [2021-10-13 07:41:57,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:41:57,239 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 365 transitions. [2021-10-13 07:41:57,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2021-10-13 07:41:57,239 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 365 transitions. [2021-10-13 07:41:57,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 07:41:57,247 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:41:57,247 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:41:57,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:41:57,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:41:57,462 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:41:57,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:41:57,463 INFO L82 PathProgramCache]: Analyzing trace with hash 177561437, now seen corresponding path program 1 times [2021-10-13 07:41:57,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:41:57,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1121257574] [2021-10-13 07:41:57,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:41:57,464 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:41:57,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:41:57,465 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:41:57,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 07:41:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:41:57,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 07:41:57,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:41:57,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:57,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:41:57,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:57,789 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:41:57,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1121257574] [2021-10-13 07:41:57,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1121257574] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:41:57,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:41:57,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-10-13 07:41:57,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946283239] [2021-10-13 07:41:57,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 07:41:57,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:41:57,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 07:41:57,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:41:57,799 INFO L87 Difference]: Start difference. First operand 258 states and 365 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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) [2021-10-13 07:41:58,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:41:58,093 INFO L93 Difference]: Finished difference Result 402 states and 541 transitions. [2021-10-13 07:41:58,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 07:41:58,095 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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 26 [2021-10-13 07:41:58,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:41:58,097 INFO L225 Difference]: With dead ends: 402 [2021-10-13 07:41:58,098 INFO L226 Difference]: Without dead ends: 354 [2021-10-13 07:41:58,098 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 115.7ms TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-10-13 07:41:58,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-10-13 07:41:58,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 248. [2021-10-13 07:41:58,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 242 states have (on average 1.43801652892562) internal successors, (348), 247 states have internal predecessors, (348), 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) [2021-10-13 07:41:58,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 348 transitions. [2021-10-13 07:41:58,115 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 348 transitions. Word has length 26 [2021-10-13 07:41:58,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:41:58,115 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 348 transitions. [2021-10-13 07:41:58,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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) [2021-10-13 07:41:58,116 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 348 transitions. [2021-10-13 07:41:58,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-13 07:41:58,117 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:41:58,117 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:41:58,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-13 07:41:58,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:41:58,329 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:41:58,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:41:58,330 INFO L82 PathProgramCache]: Analyzing trace with hash 755236346, now seen corresponding path program 1 times [2021-10-13 07:41:58,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:41:58,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1685318378] [2021-10-13 07:41:58,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:41:58,331 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:41:58,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:41:58,333 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:41:58,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 07:41:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:41:58,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:41:58,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:41:58,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:58,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:41:58,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:58,670 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:41:58,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1685318378] [2021-10-13 07:41:58,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1685318378] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:41:58,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:41:58,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:41:58,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688464359] [2021-10-13 07:41:58,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:41:58,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:41:58,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:41:58,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:41:58,674 INFO L87 Difference]: Start difference. First operand 248 states and 348 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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) [2021-10-13 07:41:58,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:41:58,727 INFO L93 Difference]: Finished difference Result 456 states and 635 transitions. [2021-10-13 07:41:58,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:41:58,728 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 30 [2021-10-13 07:41:58,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:41:58,731 INFO L225 Difference]: With dead ends: 456 [2021-10-13 07:41:58,731 INFO L226 Difference]: Without dead ends: 381 [2021-10-13 07:41:58,732 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 23.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:41:58,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-10-13 07:41:58,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 310. [2021-10-13 07:41:58,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 304 states have (on average 1.3914473684210527) internal successors, (423), 309 states have internal predecessors, (423), 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) [2021-10-13 07:41:58,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 423 transitions. [2021-10-13 07:41:58,752 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 423 transitions. Word has length 30 [2021-10-13 07:41:58,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:41:58,753 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 423 transitions. [2021-10-13 07:41:58,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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) [2021-10-13 07:41:58,753 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 423 transitions. [2021-10-13 07:41:58,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-13 07:41:58,754 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:41:58,755 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:41:58,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 07:41:58,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:41:58,967 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:41:58,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:41:58,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1878814160, now seen corresponding path program 1 times [2021-10-13 07:41:58,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:41:58,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [674808869] [2021-10-13 07:41:58,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:41:58,973 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:41:58,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:41:58,974 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:41:58,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 07:41:59,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:41:59,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 07:41:59,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:41:59,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:59,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:41:59,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:41:59,421 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:41:59,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [674808869] [2021-10-13 07:41:59,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [674808869] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:41:59,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:41:59,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 8 [2021-10-13 07:41:59,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585614582] [2021-10-13 07:41:59,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 07:41:59,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:41:59,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 07:41:59,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:41:59,425 INFO L87 Difference]: Start difference. First operand 310 states and 423 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 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) [2021-10-13 07:42:00,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:42:00,148 INFO L93 Difference]: Finished difference Result 912 states and 1264 transitions. [2021-10-13 07:42:00,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 07:42:00,149 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 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 30 [2021-10-13 07:42:00,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:42:00,154 INFO L225 Difference]: With dead ends: 912 [2021-10-13 07:42:00,154 INFO L226 Difference]: Without dead ends: 805 [2021-10-13 07:42:00,155 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 205.0ms TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-10-13 07:42:00,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2021-10-13 07:42:00,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 446. [2021-10-13 07:42:00,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 441 states have (on average 1.3786848072562359) internal successors, (608), 445 states have internal predecessors, (608), 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) [2021-10-13 07:42:00,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 608 transitions. [2021-10-13 07:42:00,195 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 608 transitions. Word has length 30 [2021-10-13 07:42:00,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:42:00,196 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 608 transitions. [2021-10-13 07:42:00,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 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) [2021-10-13 07:42:00,197 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 608 transitions. [2021-10-13 07:42:00,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-13 07:42:00,198 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:42:00,198 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:42:00,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 07:42:00,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:42:00,411 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:42:00,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:42:00,412 INFO L82 PathProgramCache]: Analyzing trace with hash 2002224973, now seen corresponding path program 1 times [2021-10-13 07:42:00,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:42:00,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633990219] [2021-10-13 07:42:00,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:42:00,413 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:42:00,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:42:00,414 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:42:00,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 07:42:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:42:00,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 07:42:00,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:42:00,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:42:00,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:42:00,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:42:00,968 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:42:00,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633990219] [2021-10-13 07:42:00,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633990219] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:42:00,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:42:00,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2021-10-13 07:42:00,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942779876] [2021-10-13 07:42:00,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 07:42:00,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:42:00,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 07:42:00,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-10-13 07:42:00,971 INFO L87 Difference]: Start difference. First operand 446 states and 608 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 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) [2021-10-13 07:42:02,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:42:02,029 INFO L93 Difference]: Finished difference Result 746 states and 1004 transitions. [2021-10-13 07:42:02,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 07:42:02,030 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 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 31 [2021-10-13 07:42:02,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:42:02,034 INFO L225 Difference]: With dead ends: 746 [2021-10-13 07:42:02,034 INFO L226 Difference]: Without dead ends: 705 [2021-10-13 07:42:02,035 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 522.2ms TimeCoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2021-10-13 07:42:02,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2021-10-13 07:42:02,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 444. [2021-10-13 07:42:02,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 439 states have (on average 1.3804100227790432) internal successors, (606), 443 states have internal predecessors, (606), 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) [2021-10-13 07:42:02,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 606 transitions. [2021-10-13 07:42:02,075 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 606 transitions. Word has length 31 [2021-10-13 07:42:02,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:42:02,075 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 606 transitions. [2021-10-13 07:42:02,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 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) [2021-10-13 07:42:02,076 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 606 transitions. [2021-10-13 07:42:02,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-13 07:42:02,077 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:42:02,077 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:42:02,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 07:42:02,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:42:02,290 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:42:02,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:42:02,290 INFO L82 PathProgramCache]: Analyzing trace with hash 2059483275, now seen corresponding path program 1 times [2021-10-13 07:42:02,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:42:02,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [303520717] [2021-10-13 07:42:02,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:42:02,291 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:42:02,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:42:02,292 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:42:02,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 07:42:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:42:02,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:42:02,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:42:02,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:42:02,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:42:02,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:42:02,593 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:42:02,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [303520717] [2021-10-13 07:42:02,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [303520717] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:42:02,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:42:02,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:42:02,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891454591] [2021-10-13 07:42:02,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:42:02,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:42:02,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:42:02,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:42:02,599 INFO L87 Difference]: Start difference. First operand 444 states and 606 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 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) [2021-10-13 07:42:02,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:42:02,696 INFO L93 Difference]: Finished difference Result 501 states and 681 transitions. [2021-10-13 07:42:02,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:42:02,697 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 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 31 [2021-10-13 07:42:02,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:42:02,700 INFO L225 Difference]: With dead ends: 501 [2021-10-13 07:42:02,700 INFO L226 Difference]: Without dead ends: 496 [2021-10-13 07:42:02,701 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 26.3ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-13 07:42:02,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-10-13 07:42:02,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 444. [2021-10-13 07:42:02,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 439 states have (on average 1.3690205011389522) internal successors, (601), 443 states have internal predecessors, (601), 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) [2021-10-13 07:42:02,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 601 transitions. [2021-10-13 07:42:02,734 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 601 transitions. Word has length 31 [2021-10-13 07:42:02,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:42:02,736 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 601 transitions. [2021-10-13 07:42:02,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 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) [2021-10-13 07:42:02,736 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 601 transitions. [2021-10-13 07:42:02,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 07:42:02,738 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:42:02,738 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:42:02,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 07:42:02,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:42:02,953 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:42:02,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:42:02,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1226989779, now seen corresponding path program 1 times [2021-10-13 07:42:02,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:42:02,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1549661456] [2021-10-13 07:42:02,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:42:02,954 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:42:02,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:42:02,955 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:42:02,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 07:42:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:42:03,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:42:03,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:42:03,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:42:03,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:42:03,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:42:03,281 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:42:03,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1549661456] [2021-10-13 07:42:03,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1549661456] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:42:03,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:42:03,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-13 07:42:03,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86177238] [2021-10-13 07:42:03,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:42:03,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:42:03,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:42:03,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:42:03,284 INFO L87 Difference]: Start difference. First operand 444 states and 601 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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) [2021-10-13 07:42:03,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:42:03,391 INFO L93 Difference]: Finished difference Result 901 states and 1199 transitions. [2021-10-13 07:42:03,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:42:03,392 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 32 [2021-10-13 07:42:03,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:42:03,397 INFO L225 Difference]: With dead ends: 901 [2021-10-13 07:42:03,398 INFO L226 Difference]: Without dead ends: 842 [2021-10-13 07:42:03,398 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 17.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:42:03,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2021-10-13 07:42:03,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 476. [2021-10-13 07:42:03,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 471 states have (on average 1.3715498938428874) internal successors, (646), 475 states have internal predecessors, (646), 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) [2021-10-13 07:42:03,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 646 transitions. [2021-10-13 07:42:03,442 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 646 transitions. Word has length 32 [2021-10-13 07:42:03,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:42:03,443 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 646 transitions. [2021-10-13 07:42:03,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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) [2021-10-13 07:42:03,443 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 646 transitions. [2021-10-13 07:42:03,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 07:42:03,444 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:42:03,445 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:42:03,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 07:42:03,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:42:03,656 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 07:42:03,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:42:03,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1711564241, now seen corresponding path program 1 times [2021-10-13 07:42:03,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:42:03,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1049050012] [2021-10-13 07:42:03,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:42:03,657 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:42:03,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:42:03,658 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:42:03,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 07:42:03,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:42:03,832 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:42:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:42:03,932 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-13 07:42:03,932 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:42:03,933 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:42:03,935 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:42:03,936 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:42:03,936 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:42:03,936 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:42:03,937 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:42:03,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-13 07:42:04,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:42:04,156 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:42:04,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:42:04 BoogieIcfgContainer [2021-10-13 07:42:04,249 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:42:04,250 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:42:04,250 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:42:04,250 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:42:04,251 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:41:54" (3/4) ... [2021-10-13 07:42:04,254 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 07:42:04,351 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:42:04,351 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:42:04,353 INFO L168 Benchmark]: Toolchain (without parser) took 11507.62 ms. Allocated memory was 65.0 MB in the beginning and 119.5 MB in the end (delta: 54.5 MB). Free memory was 45.2 MB in the beginning and 87.1 MB in the end (delta: -41.9 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:42:04,353 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 65.0 MB. Free memory is still 47.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:42:04,354 INFO L168 Benchmark]: CACSL2BoogieTranslator took 409.89 ms. Allocated memory is still 65.0 MB. Free memory was 45.0 MB in the beginning and 46.8 MB in the end (delta: -1.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:42:04,354 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.13 ms. Allocated memory is still 65.0 MB. Free memory was 46.8 MB in the beginning and 44.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:42:04,355 INFO L168 Benchmark]: Boogie Preprocessor took 39.87 ms. Allocated memory is still 65.0 MB. Free memory was 44.4 MB in the beginning and 42.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:42:04,355 INFO L168 Benchmark]: RCFGBuilder took 719.65 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 42.4 MB in the beginning and 56.7 MB in the end (delta: -14.2 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:42:04,356 INFO L168 Benchmark]: TraceAbstraction took 10175.04 ms. Allocated memory was 79.7 MB in the beginning and 119.5 MB in the end (delta: 39.8 MB). Free memory was 56.0 MB in the beginning and 91.3 MB in the end (delta: -35.3 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:42:04,356 INFO L168 Benchmark]: Witness Printer took 101.21 ms. Allocated memory is still 119.5 MB. Free memory was 91.3 MB in the beginning and 87.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:42:04,359 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 65.0 MB. Free memory is still 47.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 409.89 ms. Allocated memory is still 65.0 MB. Free memory was 45.0 MB in the beginning and 46.8 MB in the end (delta: -1.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.13 ms. Allocated memory is still 65.0 MB. Free memory was 46.8 MB in the beginning and 44.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.87 ms. Allocated memory is still 65.0 MB. Free memory was 44.4 MB in the beginning and 42.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 719.65 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 42.4 MB in the beginning and 56.7 MB in the end (delta: -14.2 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10175.04 ms. Allocated memory was 79.7 MB in the beginning and 119.5 MB in the end (delta: 39.8 MB). Free memory was 56.0 MB in the beginning and 91.3 MB in the end (delta: -35.3 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Witness Printer took 101.21 ms. Allocated memory is still 119.5 MB. Free memory was 91.3 MB in the beginning and 87.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 9]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L218] unsigned int a ; [L219] unsigned int ma = __VERIFIER_nondet_uint(); [L220] signed char ea = __VERIFIER_nondet_char(); [L221] unsigned int b ; [L222] unsigned int mb = __VERIFIER_nondet_uint(); [L223] signed char eb = __VERIFIER_nondet_char(); [L224] unsigned int r_add ; [L225] unsigned int zero ; [L226] int sa ; [L227] int sb ; [L228] int tmp ; [L229] int tmp___0 ; [L230] int tmp___1 ; [L231] int tmp___2 ; [L232] int tmp___3 ; [L233] int tmp___4 ; [L234] int tmp___5 ; [L235] int tmp___6 ; [L236] int tmp___7 ; [L237] int tmp___8 ; [L238] int tmp___9 ; [L239] int __retres23 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L243] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L244] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L245] b = base2flt(mb, eb) [L247] COND FALSE !(a < zero) [L250] COND TRUE a > zero [L251] tmp = 1 [L255] sa = tmp [L257] COND FALSE !(b < zero) [L260] COND TRUE b > zero [L261] tmp___0 = 1 [L265] sb = tmp___0 [L76] unsigned int res ; [L77] unsigned int ma ; [L78] unsigned int mb ; [L79] unsigned int delta ; [L80] int ea ; [L81] int eb ; [L82] unsigned int tmp ; [L83] unsigned int __retres10 ; [L86] COND FALSE !(a < b) [L93] COND FALSE !(! b) [L100] ma = a & ((1U << 24U) - 1U) [L101] ea = (int )(a >> 24U) - 128 [L102] ma = ma | (1U << 24U) [L103] mb = b & ((1U << 24U) - 1U) [L104] eb = (int )(b >> 24U) - 128 [L105] mb = mb | (1U << 24U) [L8] COND FALSE !(!(cond)) [L107] delta = ea - eb [L8] COND TRUE !(cond) [L9] reach_error() - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 9]: 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, 96 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 10018.1ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 33.9ms, AutomataDifference: 3221.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1434 SDtfs, 3939 SDslu, 5495 SDs, 0 SdLazy, 1126 SolverSat, 117 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1391.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 571 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 1095.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=476occurred in iteration=10, InterpolantAutomatonStates: 99, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 353.9ms AutomataMinimizationTime, 10 MinimizatonAttempts, 1618 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 144.0ms SsaConstructionTime, 374.1ms SatisfiabilityAnalysisTime, 2325.2ms InterpolantComputationTime, 296 NumberOfCodeBlocks, 296 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 508 ConstructedInterpolants, 0 QuantifiedInterpolants, 989 SizeOfPredicates, 40 NumberOfNonLiveVariables, 764 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 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! [2021-10-13 07:42:04,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59e2900-7640-48fa-83da-6b2c9d076511/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...