./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/filter2_set.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/filter2_set.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1052e6ec9925823ba5a2ccaaebf89a3336e5de0f5b82a0218158837daebc1dd1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:53:11,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:53:11,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:53:11,406 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:53:11,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:53:11,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:53:11,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:53:11,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:53:11,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:53:11,418 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:53:11,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:53:11,422 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:53:11,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:53:11,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:53:11,431 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:53:11,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:53:11,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:53:11,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:53:11,439 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:53:11,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:53:11,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:53:11,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:53:11,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:53:11,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:53:11,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:53:11,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:53:11,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:53:11,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:53:11,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:53:11,473 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:53:11,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:53:11,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:53:11,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:53:11,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:53:11,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:53:11,479 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:53:11,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:53:11,481 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:53:11,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:53:11,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:53:11,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:53:11,491 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:53:11,568 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:53:11,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:53:11,568 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:53:11,569 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:53:11,569 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:53:11,570 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:53:11,570 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:53:11,571 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:53:11,571 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:53:11,571 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:53:11,571 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:53:11,572 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:53:11,572 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:53:11,572 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:53:11,572 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:53:11,572 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:53:11,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:53:11,578 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:53:11,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:53:11,578 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:53:11,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:53:11,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:53:11,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:53:11,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:53:11,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:53:11,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:53:11,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:53:11,586 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:53:11,587 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:53:11,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:53:11,587 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:53:11,587 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:53:11,588 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:53:11,588 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1052e6ec9925823ba5a2ccaaebf89a3336e5de0f5b82a0218158837daebc1dd1 [2022-10-17 10:53:11,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:53:11,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:53:11,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:53:11,959 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:53:11,960 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:53:11,962 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/float-benchs/filter2_set.c [2022-10-17 10:53:12,034 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/data/92d2fbb91/c475a588178c4a31add49ff3252714be/FLAGb82362b39 [2022-10-17 10:53:12,552 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:53:12,553 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/sv-benchmarks/c/float-benchs/filter2_set.c [2022-10-17 10:53:12,560 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/data/92d2fbb91/c475a588178c4a31add49ff3252714be/FLAGb82362b39 [2022-10-17 10:53:12,881 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/data/92d2fbb91/c475a588178c4a31add49ff3252714be [2022-10-17 10:53:12,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:53:12,889 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:53:12,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:53:12,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:53:12,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:53:12,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:53:12" (1/1) ... [2022-10-17 10:53:12,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61b2cd70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:12, skipping insertion in model container [2022-10-17 10:53:12,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:53:12" (1/1) ... [2022-10-17 10:53:12,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:53:12,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:53:13,094 WARN L230 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_951667d7-3c21-4f23-bca9-bd12ea7a3431/sv-benchmarks/c/float-benchs/filter2_set.c[664,677] [2022-10-17 10:53:13,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:53:13,129 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:53:13,145 WARN L230 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_951667d7-3c21-4f23-bca9-bd12ea7a3431/sv-benchmarks/c/float-benchs/filter2_set.c[664,677] [2022-10-17 10:53:13,154 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:53:13,171 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:53:13,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:13 WrapperNode [2022-10-17 10:53:13,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:53:13,173 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:53:13,173 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:53:13,173 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:53:13,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:13" (1/1) ... [2022-10-17 10:53:13,192 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:13" (1/1) ... [2022-10-17 10:53:13,217 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2022-10-17 10:53:13,218 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:53:13,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:53:13,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:53:13,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:53:13,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:13" (1/1) ... [2022-10-17 10:53:13,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:13" (1/1) ... [2022-10-17 10:53:13,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:13" (1/1) ... [2022-10-17 10:53:13,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:13" (1/1) ... [2022-10-17 10:53:13,239 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:13" (1/1) ... [2022-10-17 10:53:13,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:13" (1/1) ... [2022-10-17 10:53:13,245 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:13" (1/1) ... [2022-10-17 10:53:13,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:13" (1/1) ... [2022-10-17 10:53:13,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:53:13,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:53:13,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:53:13,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:53:13,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:13" (1/1) ... [2022-10-17 10:53:13,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:53:13,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:53:13,287 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:53:13,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:53:13,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:53:13,349 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 10:53:13,349 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 10:53:13,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:53:13,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:53:13,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:53:13,431 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:53:13,433 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:53:13,691 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:53:13,699 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:53:13,699 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:53:13,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:53:13 BoogieIcfgContainer [2022-10-17 10:53:13,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:53:13,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:53:13,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:53:13,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:53:13,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:53:12" (1/3) ... [2022-10-17 10:53:13,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac2a346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:53:13, skipping insertion in model container [2022-10-17 10:53:13,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:13" (2/3) ... [2022-10-17 10:53:13,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac2a346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:53:13, skipping insertion in model container [2022-10-17 10:53:13,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:53:13" (3/3) ... [2022-10-17 10:53:13,730 INFO L112 eAbstractionObserver]: Analyzing ICFG filter2_set.c [2022-10-17 10:53:13,753 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:53:13,754 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:53:13,818 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:53:13,828 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@407e6ef4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:53:13,828 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:53:13,834 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:53:13,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-10-17 10:53:13,847 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:53:13,847 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:53:13,848 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:53:13,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:53:13,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1697849372, now seen corresponding path program 1 times [2022-10-17 10:53:13,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:53:13,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553463172] [2022-10-17 10:53:13,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:13,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:53:14,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:14,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 10:53:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:14,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-10-17 10:53:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:14,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:53:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:14,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-10-17 10:53:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:14,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-10-17 10:53:14,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:14,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-10-17 10:53:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:14,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-10-17 10:53:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:14,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-10-17 10:53:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:14,192 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-10-17 10:53:14,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:53:14,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553463172] [2022-10-17 10:53:14,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553463172] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:53:14,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:53:14,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:53:14,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705624904] [2022-10-17 10:53:14,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:53:14,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:53:14,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:53:14,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:53:14,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:53:14,258 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-17 10:53:14,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:53:14,283 INFO L93 Difference]: Finished difference Result 51 states and 78 transitions. [2022-10-17 10:53:14,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:53:14,291 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 48 [2022-10-17 10:53:14,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:53:14,299 INFO L225 Difference]: With dead ends: 51 [2022-10-17 10:53:14,299 INFO L226 Difference]: Without dead ends: 23 [2022-10-17 10:53:14,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:53:14,308 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:53:14,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:53:14,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-10-17 10:53:14,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-10-17 10:53:14,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:53:14,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2022-10-17 10:53:14,357 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 48 [2022-10-17 10:53:14,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:53:14,358 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2022-10-17 10:53:14,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-17 10:53:14,358 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2022-10-17 10:53:14,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-10-17 10:53:14,362 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:53:14,362 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:53:14,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:53:14,363 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:53:14,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:53:14,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1417424168, now seen corresponding path program 1 times [2022-10-17 10:53:14,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:53:14,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954818338] [2022-10-17 10:53:14,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:14,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:53:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:53:14,443 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:53:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:53:14,574 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:53:14,574 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 10:53:14,577 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 10:53:14,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:53:14,584 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-10-17 10:53:14,588 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 10:53:14,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 10:53:14 BoogieIcfgContainer [2022-10-17 10:53:14,653 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 10:53:14,654 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 10:53:14,654 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 10:53:14,654 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 10:53:14,655 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:53:13" (3/4) ... [2022-10-17 10:53:14,659 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-10-17 10:53:14,659 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 10:53:14,660 INFO L158 Benchmark]: Toolchain (without parser) took 1774.45ms. Allocated memory is still 117.4MB. Free memory was 93.4MB in the beginning and 93.2MB in the end (delta: 125.8kB). Peak memory consumption was 743.2kB. Max. memory is 16.1GB. [2022-10-17 10:53:14,670 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 83.9MB. Free memory was 56.4MB in the beginning and 56.4MB in the end (delta: 45.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:53:14,671 INFO L158 Benchmark]: CACSL2BoogieTranslator took 281.43ms. Allocated memory is still 117.4MB. Free memory was 93.4MB in the beginning and 82.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 10:53:14,672 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.84ms. Allocated memory is still 117.4MB. Free memory was 82.9MB in the beginning and 81.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:53:14,672 INFO L158 Benchmark]: Boogie Preprocessor took 30.08ms. Allocated memory is still 117.4MB. Free memory was 81.4MB in the beginning and 80.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:53:14,673 INFO L158 Benchmark]: RCFGBuilder took 452.89ms. Allocated memory is still 117.4MB. Free memory was 80.2MB in the beginning and 69.4MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 10:53:14,674 INFO L158 Benchmark]: TraceAbstraction took 948.18ms. Allocated memory is still 117.4MB. Free memory was 68.9MB in the beginning and 93.8MB in the end (delta: -24.9MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. [2022-10-17 10:53:14,675 INFO L158 Benchmark]: Witness Printer took 5.22ms. Allocated memory is still 117.4MB. Free memory was 93.8MB in the beginning and 93.2MB in the end (delta: 536.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:53:14,695 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 83.9MB. Free memory was 56.4MB in the beginning and 56.4MB in the end (delta: 45.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 281.43ms. Allocated memory is still 117.4MB. Free memory was 93.4MB in the beginning and 82.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.84ms. Allocated memory is still 117.4MB. Free memory was 82.9MB in the beginning and 81.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.08ms. Allocated memory is still 117.4MB. Free memory was 81.4MB in the beginning and 80.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 452.89ms. Allocated memory is still 117.4MB. Free memory was 80.2MB in the beginning and 69.4MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 948.18ms. Allocated memory is still 117.4MB. Free memory was 68.9MB in the beginning and 93.8MB in the end (delta: -24.9MB). Peak memory consumption was 38.5MB. Max. memory is 16.1GB. * Witness Printer took 5.22ms. Allocated memory is still 117.4MB. Free memory was 93.8MB in the beginning and 93.2MB in the end (delta: 536.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 57, overapproximation of to_real at line 43, overapproximation of someBinaryArithmeticDOUBLEoperation at line 55. Possible FailurePath: [L22] double E, E0, E1, S0, S1, S; [L23] double A1, A2, A3, B1, B2; [L24] int i; [L26] A1 = __VERIFIER_nondet_double() [L27] A2 = __VERIFIER_nondet_double() [L28] A3 = __VERIFIER_nondet_double() [L29] B1 = __VERIFIER_nondet_double() [L30] B2 = __VERIFIER_nondet_double() [L31] CALL assume_abort_if_not(A1 >= 0.69 && A1 <= 0.71) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L31] RET assume_abort_if_not(A1 >= 0.69 && A1 <= 0.71) [L32] CALL assume_abort_if_not(A2 >= -1.31 && A2 <= -1.29) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L32] RET assume_abort_if_not(A2 >= -1.31 && A2 <= -1.29) [L33] CALL assume_abort_if_not(A3 >= 1.09 && A3 <= 1.11) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L33] RET assume_abort_if_not(A3 >= 1.09 && A3 <= 1.11) [L34] CALL assume_abort_if_not(B1 >= 1.39 && B1 <= 1.41) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L34] RET assume_abort_if_not(B1 >= 1.39 && B1 <= 1.41) [L35] CALL assume_abort_if_not(B2 >= -0.71 && B2 <= -0.69) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L35] RET assume_abort_if_not(B2 >= -0.71 && B2 <= -0.69) [L38] E = __VERIFIER_nondet_double() [L39] E0 = __VERIFIER_nondet_double() [L40] CALL assume_abort_if_not(E >= 0. && E <= 1.) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(E >= 0. && E <= 1.) VAL [E=55, E=56] [L41] CALL assume_abort_if_not(E0 >= 0. && E0 <= 1.) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L41] RET assume_abort_if_not(E0 >= 0. && E0 <= 1.) VAL [E=56, E=55] [L43] S0 = 0 [L44] S = 0 [L46] i = 0 VAL [E=56, E=55, i=0] [L46] COND TRUE i <= 1000000 [L47] E1 = E0 [L48] E0 = E [L50] E = __VERIFIER_nondet_double() [L51] CALL assume_abort_if_not(E >= 0. && E <= 1.) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L51] RET assume_abort_if_not(E >= 0. && E <= 1.) VAL [E=55, E=53, E=56, i=0] [L53] S1 = S0 [L54] S0 = S [L55] S = A1*E - E0*A2 + E1*A3 + S0*B1 + S1*B2 [L57] CALL __VERIFIER_assert(S >= -100. && S <= 100.) [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L17] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 8, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 34 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 34 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 47 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 112/112 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 [2022-10-17 10:53:14,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/filter2_set.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1052e6ec9925823ba5a2ccaaebf89a3336e5de0f5b82a0218158837daebc1dd1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:53:17,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:53:17,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:53:17,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:53:17,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:53:17,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:53:17,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:53:17,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:53:17,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:53:17,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:53:17,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:53:17,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:53:17,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:53:17,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:53:17,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:53:17,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:53:17,693 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:53:17,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:53:17,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:53:17,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:53:17,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:53:17,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:53:17,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:53:17,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:53:17,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:53:17,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:53:17,739 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:53:17,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:53:17,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:53:17,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:53:17,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:53:17,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:53:17,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:53:17,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:53:17,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:53:17,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:53:17,752 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:53:17,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:53:17,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:53:17,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:53:17,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:53:17,758 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-10-17 10:53:17,818 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:53:17,818 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:53:17,820 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:53:17,820 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:53:17,821 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:53:17,821 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:53:17,823 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:53:17,823 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:53:17,823 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:53:17,823 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:53:17,825 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:53:17,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:53:17,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:53:17,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:53:17,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:53:17,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:53:17,826 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 10:53:17,826 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 10:53:17,827 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 10:53:17,827 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:53:17,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:53:17,827 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:53:17,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:53:17,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:53:17,828 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:53:17,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:53:17,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:53:17,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:53:17,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:53:17,830 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:53:17,830 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-10-17 10:53:17,830 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 10:53:17,830 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:53:17,831 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:53:17,838 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:53:17,838 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 10:53:17,838 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_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1052e6ec9925823ba5a2ccaaebf89a3336e5de0f5b82a0218158837daebc1dd1 [2022-10-17 10:53:18,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:53:18,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:53:18,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:53:18,359 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:53:18,360 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:53:18,363 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/float-benchs/filter2_set.c [2022-10-17 10:53:18,457 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/data/7889286ba/a3cf74bc9ba940bd940e49ba547731c9/FLAG6bd439c96 [2022-10-17 10:53:19,003 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:53:19,004 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/sv-benchmarks/c/float-benchs/filter2_set.c [2022-10-17 10:53:19,012 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/data/7889286ba/a3cf74bc9ba940bd940e49ba547731c9/FLAG6bd439c96 [2022-10-17 10:53:19,373 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/data/7889286ba/a3cf74bc9ba940bd940e49ba547731c9 [2022-10-17 10:53:19,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:53:19,378 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:53:19,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:53:19,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:53:19,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:53:19,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:53:19" (1/1) ... [2022-10-17 10:53:19,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f8b1e77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:19, skipping insertion in model container [2022-10-17 10:53:19,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:53:19" (1/1) ... [2022-10-17 10:53:19,412 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:53:19,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:53:19,606 WARN L230 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_951667d7-3c21-4f23-bca9-bd12ea7a3431/sv-benchmarks/c/float-benchs/filter2_set.c[664,677] [2022-10-17 10:53:19,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:53:19,643 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:53:19,667 WARN L230 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_951667d7-3c21-4f23-bca9-bd12ea7a3431/sv-benchmarks/c/float-benchs/filter2_set.c[664,677] [2022-10-17 10:53:19,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:53:19,732 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:53:19,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:19 WrapperNode [2022-10-17 10:53:19,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:53:19,734 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:53:19,734 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:53:19,734 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:53:19,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:19" (1/1) ... [2022-10-17 10:53:19,751 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:19" (1/1) ... [2022-10-17 10:53:19,777 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-10-17 10:53:19,778 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:53:19,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:53:19,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:53:19,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:53:19,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:19" (1/1) ... [2022-10-17 10:53:19,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:19" (1/1) ... [2022-10-17 10:53:19,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:19" (1/1) ... [2022-10-17 10:53:19,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:19" (1/1) ... [2022-10-17 10:53:19,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:19" (1/1) ... [2022-10-17 10:53:19,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:19" (1/1) ... [2022-10-17 10:53:19,813 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:19" (1/1) ... [2022-10-17 10:53:19,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:19" (1/1) ... [2022-10-17 10:53:19,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:53:19,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:53:19,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:53:19,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:53:19,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:19" (1/1) ... [2022-10-17 10:53:19,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:53:19,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:53:19,860 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:53:19,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:53:19,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:53:19,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-10-17 10:53:19,909 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-17 10:53:19,909 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-17 10:53:19,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:53:19,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:53:19,998 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:53:20,000 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:53:22,503 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:53:22,519 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:53:22,520 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:53:22,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:53:22 BoogieIcfgContainer [2022-10-17 10:53:22,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:53:22,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:53:22,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:53:22,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:53:22,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:53:19" (1/3) ... [2022-10-17 10:53:22,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43091967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:53:22, skipping insertion in model container [2022-10-17 10:53:22,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:53:19" (2/3) ... [2022-10-17 10:53:22,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43091967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:53:22, skipping insertion in model container [2022-10-17 10:53:22,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:53:22" (3/3) ... [2022-10-17 10:53:22,537 INFO L112 eAbstractionObserver]: Analyzing ICFG filter2_set.c [2022-10-17 10:53:22,561 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:53:22,561 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:53:22,635 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:53:22,647 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6de577b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:53:22,659 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:53:22,664 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:53:22,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-10-17 10:53:22,679 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:53:22,680 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:53:22,681 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:53:22,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:53:22,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1697849372, now seen corresponding path program 1 times [2022-10-17 10:53:22,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:53:22,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1137186798] [2022-10-17 10:53:22,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:22,717 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:53:22,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:53:22,721 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:53:22,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 10:53:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:24,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 10:53:24,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:53:24,638 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-10-17 10:53:24,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:53:24,639 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:53:24,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1137186798] [2022-10-17 10:53:24,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1137186798] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:53:24,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:53:24,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:53:24,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421717197] [2022-10-17 10:53:24,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:53:24,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:53:24,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:53:24,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:53:24,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:53:24,690 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-17 10:53:24,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:53:24,732 INFO L93 Difference]: Finished difference Result 51 states and 78 transitions. [2022-10-17 10:53:24,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:53:24,736 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 48 [2022-10-17 10:53:24,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:53:24,745 INFO L225 Difference]: With dead ends: 51 [2022-10-17 10:53:24,745 INFO L226 Difference]: Without dead ends: 23 [2022-10-17 10:53:24,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:53:24,759 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:53:24,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:53:24,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-10-17 10:53:24,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-10-17 10:53:24,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:53:24,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2022-10-17 10:53:24,830 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 48 [2022-10-17 10:53:24,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:53:24,831 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2022-10-17 10:53:24,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-17 10:53:24,832 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2022-10-17 10:53:24,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-10-17 10:53:24,840 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:53:24,841 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:53:24,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:53:25,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:53:25,066 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:53:25,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:53:25,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1417424168, now seen corresponding path program 1 times [2022-10-17 10:53:25,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:53:25,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1702148220] [2022-10-17 10:53:25,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:25,068 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:53:25,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:53:25,070 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:53:25,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_951667d7-3c21-4f23-bca9-bd12ea7a3431/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-10-17 10:53:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:33,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 35 conjunts are in the unsatisfiable core [2022-10-17 10:53:33,690 INFO L286 TraceCheckSpWp]: Computing forward predicates...