./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa --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 e29f062842798044f4f77e299bc6043cf6e874a22c0b9b512a8e0e54ddd042d9 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:46:34,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:46:34,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:46:34,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:46:34,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:46:34,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:46:34,481 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:46:34,484 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:46:34,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:46:34,487 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:46:34,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:46:34,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:46:34,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:46:34,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:46:34,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:46:34,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:46:34,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:46:34,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:46:34,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:46:34,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:46:34,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:46:34,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:46:34,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:46:34,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:46:34,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:46:34,512 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:46:34,513 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:46:34,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:46:34,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:46:34,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:46:34,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:46:34,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:46:34,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:46:34,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:46:34,520 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:46:34,520 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:46:34,521 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:46:34,521 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:46:34,521 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:46:34,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:46:34,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:46:34,523 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 19:46:34,547 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:46:34,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:46:34,547 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:46:34,547 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:46:34,548 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:46:34,548 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:46:34,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:46:34,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:46:34,549 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:46:34,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:46:34,550 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 19:46:34,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:46:34,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 19:46:34,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:46:34,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 19:46:34,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:46:34,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 19:46:34,551 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 19:46:34,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 19:46:34,552 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:46:34,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 19:46:34,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:46:34,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:46:34,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:46:34,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:46:34,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:46:34,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:46:34,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 19:46:34,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:46:34,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 19:46:34,554 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 19:46:34,554 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 19:46:34,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 19:46:34,554 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:46:34,555 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_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e29f062842798044f4f77e299bc6043cf6e874a22c0b9b512a8e0e54ddd042d9 [2021-12-06 19:46:34,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:46:34,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:46:34,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:46:34,748 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:46:34,749 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:46:34,750 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2021-12-06 19:46:34,792 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/data/1316beadb/75dbe61fa7ce4bfe91ad1b0a84a5c604/FLAG7bbfd5eb9 [2021-12-06 19:46:35,150 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:46:35,150 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2021-12-06 19:46:35,155 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/data/1316beadb/75dbe61fa7ce4bfe91ad1b0a84a5c604/FLAG7bbfd5eb9 [2021-12-06 19:46:35,164 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/data/1316beadb/75dbe61fa7ce4bfe91ad1b0a84a5c604 [2021-12-06 19:46:35,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:46:35,167 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:46:35,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:46:35,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:46:35,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:46:35,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:46:35" (1/1) ... [2021-12-06 19:46:35,172 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60a0e360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:35, skipping insertion in model container [2021-12-06 19:46:35,172 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:46:35" (1/1) ... [2021-12-06 19:46:35,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:46:35,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:46:35,321 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_977c0e37-0bdc-41bd-87e1-7104a4582af2/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c[1958,1971] [2021-12-06 19:46:35,323 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:46:35,330 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:46:35,351 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_977c0e37-0bdc-41bd-87e1-7104a4582af2/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c[1958,1971] [2021-12-06 19:46:35,352 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:46:35,363 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:46:35,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:35 WrapperNode [2021-12-06 19:46:35,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:46:35,365 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:46:35,365 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:46:35,365 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:46:35,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:35" (1/1) ... [2021-12-06 19:46:35,377 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:35" (1/1) ... [2021-12-06 19:46:35,392 INFO L137 Inliner]: procedures = 19, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2021-12-06 19:46:35,392 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:46:35,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:46:35,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:46:35,393 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:46:35,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:35" (1/1) ... [2021-12-06 19:46:35,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:35" (1/1) ... [2021-12-06 19:46:35,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:35" (1/1) ... [2021-12-06 19:46:35,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:35" (1/1) ... [2021-12-06 19:46:35,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:35" (1/1) ... [2021-12-06 19:46:35,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:35" (1/1) ... [2021-12-06 19:46:35,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:35" (1/1) ... [2021-12-06 19:46:35,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:46:35,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:46:35,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:46:35,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:46:35,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:35" (1/1) ... [2021-12-06 19:46:35,428 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:46:35,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:46:35,447 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:46:35,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:46:35,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 19:46:35,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 19:46:35,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 19:46:35,475 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2021-12-06 19:46:35,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2021-12-06 19:46:35,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-12-06 19:46:35,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:46:35,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:46:35,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 19:46:35,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 19:46:35,529 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:46:35,530 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:46:35,635 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:46:35,640 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:46:35,640 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-06 19:46:35,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:46:35 BoogieIcfgContainer [2021-12-06 19:46:35,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:46:35,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:46:35,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:46:35,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:46:35,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:46:35" (1/3) ... [2021-12-06 19:46:35,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@846658c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:46:35, skipping insertion in model container [2021-12-06 19:46:35,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:35" (2/3) ... [2021-12-06 19:46:35,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@846658c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:46:35, skipping insertion in model container [2021-12-06 19:46:35,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:46:35" (3/3) ... [2021-12-06 19:46:35,648 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2021-12-06 19:46:35,652 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:46:35,652 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 19:46:35,686 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:46:35,692 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 19:46:35,692 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 19:46:35,705 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 27 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 19:46:35,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 19:46:35,710 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:46:35,710 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:46:35,710 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:46:35,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:46:35,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1634587165, now seen corresponding path program 1 times [2021-12-06 19:46:35,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:46:35,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540403738] [2021-12-06 19:46:35,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:46:35,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:46:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:35,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:46:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:35,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:46:35,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:46:35,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540403738] [2021-12-06 19:46:35,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540403738] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:46:35,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:46:35,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:46:35,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922197545] [2021-12-06 19:46:35,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:46:35,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:46:35,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:46:35,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:46:35,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:46:35,876 INFO L87 Difference]: Start difference. First operand has 31 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 27 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:46:35,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:46:35,906 INFO L93 Difference]: Finished difference Result 59 states and 86 transitions. [2021-12-06 19:46:35,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:46:35,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-12-06 19:46:35,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:46:35,914 INFO L225 Difference]: With dead ends: 59 [2021-12-06 19:46:35,914 INFO L226 Difference]: Without dead ends: 28 [2021-12-06 19:46:35,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:46:35,919 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:46:35,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 71 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:46:35,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-12-06 19:46:35,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-12-06 19:46:35,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 19:46:35,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2021-12-06 19:46:35,949 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 14 [2021-12-06 19:46:35,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:46:35,949 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2021-12-06 19:46:35,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:46:35,949 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2021-12-06 19:46:35,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-06 19:46:35,950 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:46:35,951 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:46:35,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 19:46:35,951 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:46:35,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:46:35,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1992797582, now seen corresponding path program 1 times [2021-12-06 19:46:35,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:46:35,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887776799] [2021-12-06 19:46:35,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:46:35,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:46:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:36,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:46:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:36,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:46:36,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:46:36,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887776799] [2021-12-06 19:46:36,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887776799] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:46:36,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:46:36,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:46:36,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912745056] [2021-12-06 19:46:36,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:46:36,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:46:36,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:46:36,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:46:36,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:46:36,071 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:46:36,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:46:36,104 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2021-12-06 19:46:36,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:46:36,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-12-06 19:46:36,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:46:36,108 INFO L225 Difference]: With dead ends: 41 [2021-12-06 19:46:36,108 INFO L226 Difference]: Without dead ends: 32 [2021-12-06 19:46:36,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:46:36,110 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:46:36,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 120 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:46:36,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-06 19:46:36,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-12-06 19:46:36,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 19:46:36,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2021-12-06 19:46:36,120 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 15 [2021-12-06 19:46:36,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:46:36,121 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2021-12-06 19:46:36,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:46:36,122 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2021-12-06 19:46:36,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 19:46:36,122 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:46:36,123 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:46:36,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 19:46:36,123 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:46:36,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:46:36,129 INFO L85 PathProgramCache]: Analyzing trace with hash -118167546, now seen corresponding path program 1 times [2021-12-06 19:46:36,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:46:36,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834308660] [2021-12-06 19:46:36,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:46:36,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:46:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:36,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:46:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:36,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:46:36,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:46:36,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834308660] [2021-12-06 19:46:36,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834308660] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:46:36,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:46:36,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:46:36,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412967988] [2021-12-06 19:46:36,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:46:36,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:46:36,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:46:36,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:46:36,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:46:36,209 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:46:36,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:46:36,239 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2021-12-06 19:46:36,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:46:36,239 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-12-06 19:46:36,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:46:36,241 INFO L225 Difference]: With dead ends: 45 [2021-12-06 19:46:36,241 INFO L226 Difference]: Without dead ends: 36 [2021-12-06 19:46:36,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:46:36,243 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:46:36,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 136 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:46:36,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-06 19:46:36,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2021-12-06 19:46:36,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 19:46:36,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2021-12-06 19:46:36,251 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 16 [2021-12-06 19:46:36,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:46:36,251 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2021-12-06 19:46:36,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:46:36,251 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2021-12-06 19:46:36,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 19:46:36,252 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:46:36,252 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:46:36,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 19:46:36,253 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:46:36,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:46:36,254 INFO L85 PathProgramCache]: Analyzing trace with hash -774061834, now seen corresponding path program 1 times [2021-12-06 19:46:36,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:46:36,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020402281] [2021-12-06 19:46:36,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:46:36,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:46:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:36,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:46:36,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:36,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:46:36,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:46:36,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020402281] [2021-12-06 19:46:36,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020402281] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:46:36,320 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:46:36,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:46:36,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815848009] [2021-12-06 19:46:36,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:46:36,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:46:36,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:46:36,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:46:36,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:46:36,322 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:46:36,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:46:36,341 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2021-12-06 19:46:36,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:46:36,342 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-12-06 19:46:36,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:46:36,343 INFO L225 Difference]: With dead ends: 45 [2021-12-06 19:46:36,343 INFO L226 Difference]: Without dead ends: 36 [2021-12-06 19:46:36,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:46:36,344 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:46:36,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 136 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:46:36,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-06 19:46:36,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2021-12-06 19:46:36,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 19:46:36,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2021-12-06 19:46:36,349 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 17 [2021-12-06 19:46:36,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:46:36,349 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2021-12-06 19:46:36,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:46:36,349 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2021-12-06 19:46:36,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 19:46:36,350 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:46:36,350 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:46:36,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 19:46:36,350 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:46:36,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:46:36,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1728168458, now seen corresponding path program 1 times [2021-12-06 19:46:36,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:46:36,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103134801] [2021-12-06 19:46:36,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:46:36,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:46:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:36,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:46:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:36,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:46:36,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:46:36,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103134801] [2021-12-06 19:46:36,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103134801] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:46:36,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:46:36,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:46:36,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384364908] [2021-12-06 19:46:36,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:46:36,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:46:36,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:46:36,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:46:36,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:46:36,403 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:46:36,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:46:36,425 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2021-12-06 19:46:36,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:46:36,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-12-06 19:46:36,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:46:36,426 INFO L225 Difference]: With dead ends: 45 [2021-12-06 19:46:36,426 INFO L226 Difference]: Without dead ends: 36 [2021-12-06 19:46:36,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:46:36,428 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:46:36,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 136 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:46:36,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-06 19:46:36,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2021-12-06 19:46:36,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 19:46:36,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2021-12-06 19:46:36,432 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 18 [2021-12-06 19:46:36,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:46:36,433 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2021-12-06 19:46:36,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:46:36,433 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2021-12-06 19:46:36,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 19:46:36,433 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:46:36,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:46:36,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 19:46:36,434 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:46:36,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:46:36,434 INFO L85 PathProgramCache]: Analyzing trace with hash -79286005, now seen corresponding path program 1 times [2021-12-06 19:46:36,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:46:36,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543839675] [2021-12-06 19:46:36,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:46:36,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:46:36,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:46:36,452 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:46:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:46:36,482 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 19:46:36,482 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 19:46:36,483 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 19:46:36,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 19:46:36,487 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-12-06 19:46:36,489 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 19:46:36,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 07:46:36 BoogieIcfgContainer [2021-12-06 19:46:36,514 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 19:46:36,514 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 19:46:36,514 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 19:46:36,514 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 19:46:36,515 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:46:35" (3/4) ... [2021-12-06 19:46:36,517 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 19:46:36,517 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 19:46:36,518 INFO L158 Benchmark]: Toolchain (without parser) took 1350.76ms. Allocated memory is still 121.6MB. Free memory was 81.5MB in the beginning and 64.6MB in the end (delta: 16.8MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. [2021-12-06 19:46:36,518 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 121.6MB. Free memory is still 98.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 19:46:36,519 INFO L158 Benchmark]: CACSL2BoogieTranslator took 195.63ms. Allocated memory is still 121.6MB. Free memory was 81.3MB in the beginning and 95.7MB in the end (delta: -14.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-06 19:46:36,519 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.56ms. Allocated memory is still 121.6MB. Free memory was 95.7MB in the beginning and 94.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 19:46:36,519 INFO L158 Benchmark]: Boogie Preprocessor took 25.30ms. Allocated memory is still 121.6MB. Free memory was 94.1MB in the beginning and 92.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 19:46:36,520 INFO L158 Benchmark]: RCFGBuilder took 222.89ms. Allocated memory is still 121.6MB. Free memory was 92.7MB in the beginning and 80.9MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-06 19:46:36,520 INFO L158 Benchmark]: TraceAbstraction took 871.10ms. Allocated memory is still 121.6MB. Free memory was 80.4MB in the beginning and 64.8MB in the end (delta: 15.7MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. [2021-12-06 19:46:36,520 INFO L158 Benchmark]: Witness Printer took 3.30ms. Allocated memory is still 121.6MB. Free memory was 64.8MB in the beginning and 64.6MB in the end (delta: 129.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 19:46:36,522 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 121.6MB. Free memory is still 98.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 195.63ms. Allocated memory is still 121.6MB. Free memory was 81.3MB in the beginning and 95.7MB in the end (delta: -14.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.56ms. Allocated memory is still 121.6MB. Free memory was 95.7MB in the beginning and 94.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.30ms. Allocated memory is still 121.6MB. Free memory was 94.1MB in the beginning and 92.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 222.89ms. Allocated memory is still 121.6MB. Free memory was 92.7MB in the beginning and 80.9MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 871.10ms. Allocated memory is still 121.6MB. Free memory was 80.4MB in the beginning and 64.8MB in the end (delta: 15.7MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. * Witness Printer took 3.30ms. Allocated memory is still 121.6MB. Free memory was 64.8MB in the beginning and 64.6MB in the end (delta: 129.4kB). 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: 82]: 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 81, overapproximation of someUnaryDOUBLEoperation at line 76. Possible FailurePath: [L76] double x = -0.0; [L77] double y = 0.0; [L78] CALL, EXPR fmin_double(x, y) [L48] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967298] [L21] __uint32_t msw, lsw; VAL [\old(x)=4294967298, x=4294967298] [L24] ieee_double_shape_type ew_u; [L25] ew_u.value = (x) [L26] EXPR ew_u.parts.msw [L26] (msw) = ew_u.parts.msw [L27] EXPR ew_u.parts.lsw [L27] (lsw) = ew_u.parts.lsw [L30-L31] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4294967298, lsw=4294967297, msw=4293918721, x=4294967298] [L33-L34] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967298, lsw=4294967297, msw=4293918721, x=4294967298] [L36-L37] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967298, lsw=4294967297, msw=4293918721, x=4294967298] [L40-L41] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L44] return 0; VAL [\old(x)=4294967298, \result=0, lsw=4294967297, msw=4293918721, x=4294967298] [L48] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4294967298, \old(y)=0, __fpclassify_double(x)=0, x=4294967298, y=0] [L48] COND TRUE __fpclassify_double(x) == 0 [L49] return y; VAL [\old(x)=4294967298, \old(y)=0, \result=0, x=4294967298, y=0] [L78] RET, EXPR fmin_double(x, y) [L78] double res = fmin_double(x, y); [L81] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=0, res == -0.0 && __signbit_double(res) == 1=0, x=4294967298, y=0] [L81] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L82] reach_error() VAL [res=0, x=4294967298, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 599 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 414 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 87 IncrementalHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 185 mSDtfsCounter, 87 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=2, InterpolantAutomatonStates: 23, 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, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 191 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 [2021-12-06 19:46:36,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/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_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa --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 e29f062842798044f4f77e299bc6043cf6e874a22c0b9b512a8e0e54ddd042d9 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:46:38,238 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:46:38,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:46:38,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:46:38,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:46:38,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:46:38,263 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:46:38,265 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:46:38,267 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:46:38,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:46:38,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:46:38,269 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:46:38,270 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:46:38,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:46:38,272 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:46:38,273 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:46:38,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:46:38,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:46:38,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:46:38,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:46:38,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:46:38,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:46:38,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:46:38,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:46:38,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:46:38,287 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:46:38,288 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:46:38,289 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:46:38,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:46:38,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:46:38,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:46:38,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:46:38,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:46:38,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:46:38,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:46:38,295 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:46:38,301 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:46:38,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:46:38,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:46:38,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:46:38,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:46:38,303 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-06 19:46:38,325 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:46:38,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:46:38,325 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:46:38,326 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:46:38,326 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:46:38,326 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:46:38,327 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:46:38,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:46:38,327 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:46:38,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:46:38,327 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 19:46:38,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 19:46:38,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:46:38,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 19:46:38,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:46:38,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 19:46:38,328 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 19:46:38,328 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 19:46:38,328 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 19:46:38,329 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 19:46:38,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 19:46:38,329 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:46:38,329 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 19:46:38,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:46:38,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:46:38,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:46:38,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:46:38,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:46:38,330 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:46:38,330 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 19:46:38,330 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 19:46:38,330 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 19:46:38,331 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 19:46:38,331 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 19:46:38,331 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 19:46:38,331 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:46:38,331 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 19:46:38,331 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_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e29f062842798044f4f77e299bc6043cf6e874a22c0b9b512a8e0e54ddd042d9 [2021-12-06 19:46:38,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:46:38,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:46:38,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:46:38,580 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:46:38,580 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:46:38,581 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2021-12-06 19:46:38,620 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/data/9eb620905/6314cf2bd7eb4eb18aa842fab49a4501/FLAGf0dafcbed [2021-12-06 19:46:39,002 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:46:39,002 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2021-12-06 19:46:39,009 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/data/9eb620905/6314cf2bd7eb4eb18aa842fab49a4501/FLAGf0dafcbed [2021-12-06 19:46:39,019 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/data/9eb620905/6314cf2bd7eb4eb18aa842fab49a4501 [2021-12-06 19:46:39,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:46:39,021 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:46:39,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:46:39,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:46:39,025 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:46:39,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:46:39" (1/1) ... [2021-12-06 19:46:39,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ab9caa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:39, skipping insertion in model container [2021-12-06 19:46:39,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:46:39" (1/1) ... [2021-12-06 19:46:39,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:46:39,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:46:39,152 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_977c0e37-0bdc-41bd-87e1-7104a4582af2/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c[1958,1971] [2021-12-06 19:46:39,154 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:46:39,162 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:46:39,188 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_977c0e37-0bdc-41bd-87e1-7104a4582af2/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c[1958,1971] [2021-12-06 19:46:39,189 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:46:39,203 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:46:39,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:39 WrapperNode [2021-12-06 19:46:39,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:46:39,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:46:39,204 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:46:39,204 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:46:39,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:39" (1/1) ... [2021-12-06 19:46:39,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:39" (1/1) ... [2021-12-06 19:46:39,238 INFO L137 Inliner]: procedures = 22, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2021-12-06 19:46:39,238 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:46:39,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:46:39,239 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:46:39,239 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:46:39,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:39" (1/1) ... [2021-12-06 19:46:39,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:39" (1/1) ... [2021-12-06 19:46:39,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:39" (1/1) ... [2021-12-06 19:46:39,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:39" (1/1) ... [2021-12-06 19:46:39,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:39" (1/1) ... [2021-12-06 19:46:39,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:39" (1/1) ... [2021-12-06 19:46:39,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:39" (1/1) ... [2021-12-06 19:46:39,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:46:39,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:46:39,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:46:39,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:46:39,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:39" (1/1) ... [2021-12-06 19:46:39,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:46:39,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:46:39,294 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:46:39,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:46:39,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 19:46:39,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-12-06 19:46:39,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-06 19:46:39,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 19:46:39,322 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2021-12-06 19:46:39,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2021-12-06 19:46:39,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-06 19:46:39,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:46:39,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:46:39,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 19:46:39,384 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:46:39,386 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:46:39,531 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:46:39,537 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:46:39,537 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-06 19:46:39,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:46:39 BoogieIcfgContainer [2021-12-06 19:46:39,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:46:39,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:46:39,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:46:39,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:46:39,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:46:39" (1/3) ... [2021-12-06 19:46:39,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78ff24cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:46:39, skipping insertion in model container [2021-12-06 19:46:39,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:46:39" (2/3) ... [2021-12-06 19:46:39,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78ff24cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:46:39, skipping insertion in model container [2021-12-06 19:46:39,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:46:39" (3/3) ... [2021-12-06 19:46:39,546 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2021-12-06 19:46:39,551 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:46:39,551 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 19:46:39,598 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:46:39,606 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 19:46:39,606 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 19:46:39,623 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 19:46:39,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 19:46:39,627 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:46:39,627 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:46:39,628 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:46:39,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:46:39,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1130952206, now seen corresponding path program 1 times [2021-12-06 19:46:39,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:46:39,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343440561] [2021-12-06 19:46:39,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:46:39,643 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:46:39,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:46:39,644 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:46:39,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 19:46:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:39,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-06 19:46:39,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:46:39,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:46:39,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:46:39,772 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:46:39,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343440561] [2021-12-06 19:46:39,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [343440561] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:46:39,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:46:39,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 19:46:39,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190317342] [2021-12-06 19:46:39,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:46:39,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 19:46:39,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:46:39,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 19:46:39,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 19:46:39,809 INFO L87 Difference]: Start difference. First operand has 29 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:46:39,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:46:39,825 INFO L93 Difference]: Finished difference Result 55 states and 82 transitions. [2021-12-06 19:46:39,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 19:46:39,827 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-12-06 19:46:39,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:46:39,834 INFO L225 Difference]: With dead ends: 55 [2021-12-06 19:46:39,834 INFO L226 Difference]: Without dead ends: 26 [2021-12-06 19:46:39,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 19:46:39,841 INFO L933 BasicCegarLoop]: 37 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, 37 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 [2021-12-06 19:46:39,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:46:39,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-06 19:46:39,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-12-06 19:46:39,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 19:46:39,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2021-12-06 19:46:39,874 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 13 [2021-12-06 19:46:39,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:46:39,874 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2021-12-06 19:46:39,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:46:39,874 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2021-12-06 19:46:39,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 19:46:39,876 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:46:39,876 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:46:39,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 19:46:40,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:46:40,077 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:46:40,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:46:40,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1285201507, now seen corresponding path program 1 times [2021-12-06 19:46:40,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:46:40,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2128451122] [2021-12-06 19:46:40,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:46:40,079 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:46:40,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:46:40,080 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:46:40,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 19:46:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:40,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 19:46:40,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:46:40,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:46:40,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:46:40,163 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:46:40,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2128451122] [2021-12-06 19:46:40,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2128451122] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:46:40,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:46:40,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:46:40,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481040075] [2021-12-06 19:46:40,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:46:40,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:46:40,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:46:40,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:46:40,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:46:40,166 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:46:40,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:46:40,186 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2021-12-06 19:46:40,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:46:40,187 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-12-06 19:46:40,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:46:40,189 INFO L225 Difference]: With dead ends: 38 [2021-12-06 19:46:40,189 INFO L226 Difference]: Without dead ends: 29 [2021-12-06 19:46:40,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:46:40,191 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:46:40,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:46:40,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-06 19:46:40,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-12-06 19:46:40,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 19:46:40,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2021-12-06 19:46:40,201 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 14 [2021-12-06 19:46:40,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:46:40,201 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2021-12-06 19:46:40,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:46:40,202 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2021-12-06 19:46:40,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-06 19:46:40,203 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:46:40,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:46:40,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 19:46:40,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:46:40,405 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:46:40,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:46:40,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1497908235, now seen corresponding path program 1 times [2021-12-06 19:46:40,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:46:40,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943361538] [2021-12-06 19:46:40,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:46:40,411 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:46:40,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:46:40,413 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:46:40,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-06 19:46:40,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:40,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 19:46:40,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:46:40,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:46:40,732 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:46:40,732 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:46:40,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [943361538] [2021-12-06 19:46:40,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [943361538] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:46:40,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:46:40,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:46:40,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825518647] [2021-12-06 19:46:40,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:46:40,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:46:40,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:46:40,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:46:40,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:46:40,734 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:46:40,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:46:40,779 INFO L93 Difference]: Finished difference Result 56 states and 73 transitions. [2021-12-06 19:46:40,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:46:40,780 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-12-06 19:46:40,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:46:40,781 INFO L225 Difference]: With dead ends: 56 [2021-12-06 19:46:40,781 INFO L226 Difference]: Without dead ends: 31 [2021-12-06 19:46:40,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:46:40,782 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 18 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:46:40,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 103 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 25 Unchecked, 0.0s Time] [2021-12-06 19:46:40,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-06 19:46:40,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-12-06 19:46:40,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.32) internal successors, (33), 26 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:46:40,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2021-12-06 19:46:40,787 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 15 [2021-12-06 19:46:40,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:46:40,788 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2021-12-06 19:46:40,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:46:40,788 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2021-12-06 19:46:40,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 19:46:40,788 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:46:40,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:46:40,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-06 19:46:40,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:46:40,991 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:46:40,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:46:40,993 INFO L85 PathProgramCache]: Analyzing trace with hash -2116811041, now seen corresponding path program 1 times [2021-12-06 19:46:40,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:46:40,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427358756] [2021-12-06 19:46:40,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:46:40,995 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:46:40,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:46:40,998 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:46:41,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-06 19:46:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:41,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 19:46:41,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:46:41,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:46:41,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:46:41,160 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:46:41,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427358756] [2021-12-06 19:46:41,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427358756] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:46:41,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:46:41,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:46:41,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416020804] [2021-12-06 19:46:41,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:46:41,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:46:41,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:46:41,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:46:41,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:46:41,163 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:46:41,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:46:41,178 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2021-12-06 19:46:41,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:46:41,179 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-12-06 19:46:41,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:46:41,180 INFO L225 Difference]: With dead ends: 43 [2021-12-06 19:46:41,180 INFO L226 Difference]: Without dead ends: 34 [2021-12-06 19:46:41,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:46:41,181 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:46:41,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 101 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:46:41,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-12-06 19:46:41,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2021-12-06 19:46:41,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.32) internal successors, (33), 26 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:46:41,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2021-12-06 19:46:41,189 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 16 [2021-12-06 19:46:41,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:46:41,189 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2021-12-06 19:46:41,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:46:41,189 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2021-12-06 19:46:41,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 19:46:41,190 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:46:41,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:46:41,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-06 19:46:41,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:46:41,392 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:46:41,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:46:41,395 INFO L85 PathProgramCache]: Analyzing trace with hash 172315143, now seen corresponding path program 1 times [2021-12-06 19:46:41,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:46:41,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1027217561] [2021-12-06 19:46:41,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:46:41,396 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:46:41,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:46:41,399 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:46:41,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-06 19:46:41,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:41,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 19:46:41,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:46:41,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:46:41,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:46:41,675 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:46:41,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1027217561] [2021-12-06 19:46:41,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1027217561] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:46:41,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:46:41,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:46:41,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650615056] [2021-12-06 19:46:41,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:46:41,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:46:41,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:46:41,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:46:41,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:46:41,677 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:46:41,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:46:41,710 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2021-12-06 19:46:41,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:46:41,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-12-06 19:46:41,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:46:41,712 INFO L225 Difference]: With dead ends: 57 [2021-12-06 19:46:41,712 INFO L226 Difference]: Without dead ends: 30 [2021-12-06 19:46:41,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:46:41,713 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:46:41,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 89 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 25 Unchecked, 0.0s Time] [2021-12-06 19:46:41,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-12-06 19:46:41,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2021-12-06 19:46:41,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 19:46:41,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2021-12-06 19:46:41,719 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 17 [2021-12-06 19:46:41,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:46:41,719 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2021-12-06 19:46:41,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 19:46:41,719 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2021-12-06 19:46:41,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 19:46:41,720 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:46:41,720 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:46:41,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-06 19:46:41,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:46:41,922 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:46:41,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:46:41,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1943218574, now seen corresponding path program 1 times [2021-12-06 19:46:41,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:46:41,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [245503695] [2021-12-06 19:46:41,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:46:41,926 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:46:41,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:46:41,928 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:46:41,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-06 19:46:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:42,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 19:46:42,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:46:42,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 19:46:42,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:46:42,081 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:46:42,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [245503695] [2021-12-06 19:46:42,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [245503695] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:46:42,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:46:42,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:46:42,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036425931] [2021-12-06 19:46:42,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:46:42,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:46:42,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:46:42,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:46:42,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:46:42,083 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 19:46:42,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:46:42,097 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2021-12-06 19:46:42,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:46:42,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2021-12-06 19:46:42,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:46:42,099 INFO L225 Difference]: With dead ends: 40 [2021-12-06 19:46:42,099 INFO L226 Difference]: Without dead ends: 31 [2021-12-06 19:46:42,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:46:42,100 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:46:42,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:46:42,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-06 19:46:42,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-12-06 19:46:42,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.28) internal successors, (32), 26 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:46:42,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2021-12-06 19:46:42,103 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 22 [2021-12-06 19:46:42,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:46:42,104 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2021-12-06 19:46:42,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 19:46:42,104 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2021-12-06 19:46:42,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-06 19:46:42,105 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:46:42,105 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:46:42,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-06 19:46:42,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:46:42,306 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:46:42,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:46:42,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1682849308, now seen corresponding path program 1 times [2021-12-06 19:46:42,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:46:42,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [353911983] [2021-12-06 19:46:42,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:46:42,309 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:46:42,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:46:42,312 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:46:42,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-06 19:46:42,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:42,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 19:46:42,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:46:42,576 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:46:42,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:46:42,576 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:46:42,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [353911983] [2021-12-06 19:46:42,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [353911983] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:46:42,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:46:42,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:46:42,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977053995] [2021-12-06 19:46:42,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:46:42,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:46:42,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:46:42,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:46:42,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:46:42,577 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 19:46:42,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:46:42,674 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2021-12-06 19:46:42,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:46:42,675 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2021-12-06 19:46:42,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:46:42,676 INFO L225 Difference]: With dead ends: 45 [2021-12-06 19:46:42,676 INFO L226 Difference]: Without dead ends: 31 [2021-12-06 19:46:42,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:46:42,677 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 16 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:46:42,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 103 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 19 Unchecked, 0.1s Time] [2021-12-06 19:46:42,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-06 19:46:42,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-12-06 19:46:42,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.24) internal successors, (31), 26 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 19:46:42,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2021-12-06 19:46:42,681 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 23 [2021-12-06 19:46:42,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:46:42,681 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2021-12-06 19:46:42,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 19:46:42,681 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2021-12-06 19:46:42,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-06 19:46:42,682 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:46:42,682 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:46:42,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-06 19:46:42,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:46:42,884 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:46:42,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:46:42,885 INFO L85 PathProgramCache]: Analyzing trace with hash 474937390, now seen corresponding path program 1 times [2021-12-06 19:46:42,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:46:42,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301725467] [2021-12-06 19:46:42,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:46:42,887 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:46:42,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:46:42,889 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:46:42,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-06 19:46:43,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:43,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 19:46:43,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:46:43,059 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 19:46:43,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:46:43,059 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:46:43,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301725467] [2021-12-06 19:46:43,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301725467] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:46:43,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:46:43,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:46:43,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377795456] [2021-12-06 19:46:43,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:46:43,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:46:43,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:46:43,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:46:43,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:46:43,060 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 19:46:43,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:46:43,072 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2021-12-06 19:46:43,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:46:43,072 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2021-12-06 19:46:43,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:46:43,073 INFO L225 Difference]: With dead ends: 41 [2021-12-06 19:46:43,073 INFO L226 Difference]: Without dead ends: 32 [2021-12-06 19:46:43,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:46:43,074 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:46:43,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 96 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:46:43,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-06 19:46:43,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2021-12-06 19:46:43,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 19:46:43,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-12-06 19:46:43,077 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 24 [2021-12-06 19:46:43,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:46:43,077 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-12-06 19:46:43,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 19:46:43,078 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2021-12-06 19:46:43,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-06 19:46:43,078 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:46:43,078 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:46:43,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-06 19:46:43,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:46:43,280 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:46:43,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:46:43,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1777787178, now seen corresponding path program 1 times [2021-12-06 19:46:43,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:46:43,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2083300340] [2021-12-06 19:46:43,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:46:43,281 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:46:43,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:46:43,282 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:46:43,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-06 19:46:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:43,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 19:46:43,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:46:43,419 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 19:46:43,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:46:43,419 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:46:43,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2083300340] [2021-12-06 19:46:43,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2083300340] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:46:43,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:46:43,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:46:43,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924014722] [2021-12-06 19:46:43,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:46:43,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:46:43,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:46:43,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:46:43,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:46:43,421 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 19:46:43,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:46:43,491 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2021-12-06 19:46:43,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:46:43,491 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2021-12-06 19:46:43,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:46:43,492 INFO L225 Difference]: With dead ends: 42 [2021-12-06 19:46:43,492 INFO L226 Difference]: Without dead ends: 39 [2021-12-06 19:46:43,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:46:43,493 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 34 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:46:43,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 118 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:46:43,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-06 19:46:43,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2021-12-06 19:46:43,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 19:46:43,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2021-12-06 19:46:43,497 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 24 [2021-12-06 19:46:43,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:46:43,497 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2021-12-06 19:46:43,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 19:46:43,497 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2021-12-06 19:46:43,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-06 19:46:43,498 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:46:43,498 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:46:43,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-12-06 19:46:43,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:46:43,700 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:46:43,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:46:43,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1835045480, now seen corresponding path program 1 times [2021-12-06 19:46:43,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:46:43,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [558106417] [2021-12-06 19:46:43,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:46:43,703 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:46:43,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:46:43,705 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:46:43,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-06 19:46:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:43,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 19:46:43,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:46:43,851 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 19:46:43,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:46:43,851 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:46:43,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [558106417] [2021-12-06 19:46:43,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [558106417] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:46:43,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:46:43,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 19:46:43,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581077531] [2021-12-06 19:46:43,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:46:43,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 19:46:43,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:46:43,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 19:46:43,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:46:43,852 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 19:46:43,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:46:43,858 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2021-12-06 19:46:43,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 19:46:43,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2021-12-06 19:46:43,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:46:43,859 INFO L225 Difference]: With dead ends: 41 [2021-12-06 19:46:43,859 INFO L226 Difference]: Without dead ends: 31 [2021-12-06 19:46:43,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 19:46:43,860 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 12 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:46:43,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 43 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:46:43,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-06 19:46:43,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-12-06 19:46:43,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 19:46:43,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2021-12-06 19:46:43,864 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 24 [2021-12-06 19:46:43,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:46:43,864 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2021-12-06 19:46:43,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 19:46:43,864 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2021-12-06 19:46:43,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 19:46:43,864 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:46:43,865 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:46:43,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-12-06 19:46:44,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:46:44,066 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:46:44,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:46:44,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1323122336, now seen corresponding path program 1 times [2021-12-06 19:46:44,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:46:44,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136016589] [2021-12-06 19:46:44,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:46:44,067 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:46:44,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:46:44,068 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:46:44,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-06 19:46:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:44,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 19:46:44,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:46:44,283 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 19:46:44,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:46:44,283 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 19:46:44,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2136016589] [2021-12-06 19:46:44,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2136016589] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:46:44,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:46:44,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:46:44,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934707840] [2021-12-06 19:46:44,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:46:44,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:46:44,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 19:46:44,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:46:44,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:46:44,284 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 19:46:44,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:46:44,370 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2021-12-06 19:46:44,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:46:44,370 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2021-12-06 19:46:44,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:46:44,371 INFO L225 Difference]: With dead ends: 42 [2021-12-06 19:46:44,371 INFO L226 Difference]: Without dead ends: 25 [2021-12-06 19:46:44,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:46:44,372 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 14 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:46:44,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 85 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 16 Unchecked, 0.1s Time] [2021-12-06 19:46:44,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-12-06 19:46:44,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-12-06 19:46:44,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 19:46:44,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-12-06 19:46:44,374 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 25 [2021-12-06 19:46:44,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:46:44,374 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-12-06 19:46:44,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 19:46:44,375 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2021-12-06 19:46:44,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-06 19:46:44,375 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:46:44,375 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:46:44,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-12-06 19:46:44,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:46:44,576 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:46:44,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:46:44,577 INFO L85 PathProgramCache]: Analyzing trace with hash 2065734315, now seen corresponding path program 1 times [2021-12-06 19:46:44,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 19:46:44,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [181253431] [2021-12-06 19:46:44,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:46:44,578 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 19:46:44,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 19:46:44,579 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 19:46:44,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-06 19:46:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:46:44,694 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 19:46:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 19:46:44,767 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-06 19:46:44,768 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 19:46:44,768 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 19:46:44,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-12-06 19:46:44,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 19:46:44,978 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:46:44,985 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 19:46:45,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 07:46:45 BoogieIcfgContainer [2021-12-06 19:46:45,035 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 19:46:45,035 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 19:46:45,035 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 19:46:45,035 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 19:46:45,035 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:46:39" (3/4) ... [2021-12-06 19:46:45,037 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-06 19:46:45,066 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 19:46:45,067 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 19:46:45,067 INFO L158 Benchmark]: Toolchain (without parser) took 6045.84ms. Allocated memory was 65.0MB in the beginning and 81.8MB in the end (delta: 16.8MB). Free memory was 45.1MB in the beginning and 27.6MB in the end (delta: 17.5MB). Peak memory consumption was 35.2MB. Max. memory is 16.1GB. [2021-12-06 19:46:45,067 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 65.0MB. Free memory is still 45.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 19:46:45,068 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.66ms. Allocated memory is still 65.0MB. Free memory was 45.1MB in the beginning and 47.9MB in the end (delta: -2.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-06 19:46:45,068 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.82ms. Allocated memory is still 65.0MB. Free memory was 47.9MB in the beginning and 46.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 19:46:45,068 INFO L158 Benchmark]: Boogie Preprocessor took 29.31ms. Allocated memory is still 65.0MB. Free memory was 46.1MB in the beginning and 44.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 19:46:45,068 INFO L158 Benchmark]: RCFGBuilder took 270.44ms. Allocated memory is still 65.0MB. Free memory was 44.5MB in the beginning and 32.9MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-06 19:46:45,069 INFO L158 Benchmark]: TraceAbstraction took 5493.97ms. Allocated memory was 65.0MB in the beginning and 81.8MB in the end (delta: 16.8MB). Free memory was 32.2MB in the beginning and 30.4MB in the end (delta: 1.9MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2021-12-06 19:46:45,069 INFO L158 Benchmark]: Witness Printer took 31.75ms. Allocated memory is still 81.8MB. Free memory was 30.4MB in the beginning and 27.6MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-06 19:46:45,070 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 65.0MB. Free memory is still 45.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 181.66ms. Allocated memory is still 65.0MB. Free memory was 45.1MB in the beginning and 47.9MB in the end (delta: -2.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.82ms. Allocated memory is still 65.0MB. Free memory was 47.9MB in the beginning and 46.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.31ms. Allocated memory is still 65.0MB. Free memory was 46.1MB in the beginning and 44.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 270.44ms. Allocated memory is still 65.0MB. Free memory was 44.5MB in the beginning and 32.9MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5493.97ms. Allocated memory was 65.0MB in the beginning and 81.8MB in the end (delta: 16.8MB). Free memory was 32.2MB in the beginning and 30.4MB in the end (delta: 1.9MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. * Witness Printer took 31.75ms. Allocated memory is still 81.8MB. Free memory was 30.4MB in the beginning and 27.6MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. 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 - CounterExampleResult [Line: 82]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L76] double x = -0.0; [L77] double y = 0.0; [L78] CALL, EXPR fmin_double(x, y) [L48] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=0.0] [L21] __uint32_t msw, lsw; VAL [\old(x)=0.0, x=0.0] [L24] ieee_double_shape_type ew_u; [L25] ew_u.value = (x) [L26] EXPR ew_u.parts.msw [L26] (msw) = ew_u.parts.msw [L27] EXPR ew_u.parts.lsw [L27] (lsw) = ew_u.parts.lsw [L30-L31] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L32] return 2; VAL [\old(x)=0.0, \result=2, lsw=0, msw=-2147483648, x=0.0] [L48] RET, EXPR __fpclassify_double(x) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_double(x)=2, x=0.0, y=0.0] [L48] COND FALSE !(__fpclassify_double(x) == 0) [L50] CALL, EXPR __fpclassify_double(y) VAL [\old(x)=0.0] [L21] __uint32_t msw, lsw; VAL [\old(x)=0.0, x=0.0] [L24] ieee_double_shape_type ew_u; [L25] ew_u.value = (x) [L26] EXPR ew_u.parts.msw [L26] (msw) = ew_u.parts.msw [L27] EXPR ew_u.parts.lsw [L27] (lsw) = ew_u.parts.lsw [L30-L31] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L32] return 2; VAL [\old(x)=0.0, \result=2, lsw=0, msw=0, x=0.0] [L50] RET, EXPR __fpclassify_double(y) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_double(y)=2, x=0.0, y=0.0] [L50] COND FALSE !(__fpclassify_double(y) == 0) [L53] EXPR x < y ? x : y VAL [\old(x)=0.0, \old(y)=0.0, x=0.0, x < y ? x : y=0.0, y=0.0] [L53] return x < y ? x : y; [L78] RET, EXPR fmin_double(x, y) [L78] double res = fmin_double(x, y); [L81] EXPR res == -0.0 && __signbit_double(res) == 1 [L81] CALL, EXPR __signbit_double(res) [L57] __uint32_t msw; VAL [\old(x)=0.0, x=0.0] [L60] ieee_double_shape_type gh_u; [L61] gh_u.value = (x) [L62] EXPR gh_u.parts.msw [L62] (msw) = gh_u.parts.msw [L65] return (msw & 0x80000000) != 0; VAL [\old(x)=0.0, \result=0, msw=0, x=0.0] [L81] RET, EXPR __signbit_double(res) [L81] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [__signbit_double(res)=0, res=0.0, res == -0.0 && __signbit_double(res) == 1=0, x=0.0, y=0.0] [L81] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L82] reach_error() VAL [res=0.0, x=0.0, y=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.4s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 118 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 112 mSDsluCounter, 956 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 85 IncrementalHoareTripleChecker+Unchecked, 623 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 98 IncrementalHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 333 mSDtfsCounter, 98 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 214 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=9, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 15 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 245 NumberOfCodeBlocks, 245 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 206 ConstructedInterpolants, 24 QuantifiedInterpolants, 725 SizeOfPredicates, 35 NumberOfNonLiveVariables, 787 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 36/36 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! [2021-12-06 19:46:45,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_977c0e37-0bdc-41bd-87e1-7104a4582af2/bin/uautomizer-DrprNOufMa/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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE