./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f4dc35f578dc1494a61593c536b677f3beb3e4db21638b64de73547c5a37e2be --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:03:42,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:03:42,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:03:42,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:03:42,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:03:42,397 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:03:42,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:03:42,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:03:42,407 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:03:42,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:03:42,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:03:42,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:03:42,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:03:42,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:03:42,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:03:42,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:03:42,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:03:42,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:03:42,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:03:42,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:03:42,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:03:42,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:03:42,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:03:42,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:03:42,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:03:42,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:03:42,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:03:42,483 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:03:42,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:03:42,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:03:42,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:03:42,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:03:42,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:03:42,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:03:42,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:03:42,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:03:42,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:03:42,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:03:42,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:03:42,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:03:42,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:03:42,502 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:03:42,559 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:03:42,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:03:42,562 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:03:42,562 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:03:42,562 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:03:42,563 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:03:42,563 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:03:42,563 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:03:42,571 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:03:42,571 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:03:42,573 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:03:42,573 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:03:42,574 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:03:42,574 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:03:42,574 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:03:42,575 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:03:42,575 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:03:42,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:03:42,576 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:03:42,576 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:03:42,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:03:42,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:03:42,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:03:42,577 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:03:42,578 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:03:42,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:03:42,578 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:03:42,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:03:42,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:03:42,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:03:42,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:03:42,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:03:42,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:03:42,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:03:42,582 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:03:42,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:03:42,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:03:42,583 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:03:42,583 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:03:42,584 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4dc35f578dc1494a61593c536b677f3beb3e4db21638b64de73547c5a37e2be [2021-11-07 01:03:42,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:03:42,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:03:42,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:03:42,934 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:03:42,935 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:03:42,936 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c [2021-11-07 01:03:43,023 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/data/3371de8f8/e757cb50e3c24a9ea5cc96577375814c/FLAG4be51d61b [2021-11-07 01:03:43,733 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:03:43,734 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c [2021-11-07 01:03:43,750 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/data/3371de8f8/e757cb50e3c24a9ea5cc96577375814c/FLAG4be51d61b [2021-11-07 01:03:44,054 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/data/3371de8f8/e757cb50e3c24a9ea5cc96577375814c [2021-11-07 01:03:44,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:03:44,059 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:03:44,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:03:44,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:03:44,066 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:03:44,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:03:44" (1/1) ... [2021-11-07 01:03:44,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@db8f9c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:44, skipping insertion in model container [2021-11-07 01:03:44,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:03:44" (1/1) ... [2021-11-07 01:03:44,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:03:44,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:03:44,303 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c[709,722] [2021-11-07 01:03:44,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:03:44,344 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:03:44,358 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c[709,722] [2021-11-07 01:03:44,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:03:44,388 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:03:44,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:44 WrapperNode [2021-11-07 01:03:44,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:03:44,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:03:44,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:03:44,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:03:44,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:44" (1/1) ... [2021-11-07 01:03:44,408 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:44" (1/1) ... [2021-11-07 01:03:44,434 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:03:44,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:03:44,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:03:44,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:03:44,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:44" (1/1) ... [2021-11-07 01:03:44,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:44" (1/1) ... [2021-11-07 01:03:44,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:44" (1/1) ... [2021-11-07 01:03:44,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:44" (1/1) ... [2021-11-07 01:03:44,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:44" (1/1) ... [2021-11-07 01:03:44,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:44" (1/1) ... [2021-11-07 01:03:44,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:44" (1/1) ... [2021-11-07 01:03:44,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:03:44,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:03:44,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:03:44,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:03:44,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:44" (1/1) ... [2021-11-07 01:03:44,489 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:03:44,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:03:44,532 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:03:44,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:03:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:03:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:03:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:03:44,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:03:44,989 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:03:44,990 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-11-07 01:03:44,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:03:44 BoogieIcfgContainer [2021-11-07 01:03:44,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:03:44,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:03:44,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:03:45,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:03:45,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:03:44" (1/3) ... [2021-11-07 01:03:45,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f13a04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:03:45, skipping insertion in model container [2021-11-07 01:03:45,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:44" (2/3) ... [2021-11-07 01:03:45,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f13a04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:03:45, skipping insertion in model container [2021-11-07 01:03:45,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:03:44" (3/3) ... [2021-11-07 01:03:45,012 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound5.c [2021-11-07 01:03:45,018 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:03:45,034 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 01:03:45,140 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:03:45,154 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:03:45,157 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 01:03:45,178 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 28 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:03:45,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 01:03:45,187 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:03:45,188 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-07 01:03:45,189 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:03:45,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:03:45,209 INFO L85 PathProgramCache]: Analyzing trace with hash 114241630, now seen corresponding path program 1 times [2021-11-07 01:03:45,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:03:45,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555799317] [2021-11-07 01:03:45,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:03:45,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:03:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:03:45,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:03:45,432 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:03:45,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555799317] [2021-11-07 01:03:45,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555799317] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:03:45,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:03:45,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 01:03:45,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918778535] [2021-11-07 01:03:45,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:03:45,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:03:45,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:03:45,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:03:45,462 INFO L87 Difference]: Start difference. First operand has 29 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 28 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:03:45,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:03:45,478 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2021-11-07 01:03:45,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:03:45,480 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-07 01:03:45,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:03:45,491 INFO L225 Difference]: With dead ends: 57 [2021-11-07 01:03:45,491 INFO L226 Difference]: Without dead ends: 27 [2021-11-07 01:03:45,494 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:03:45,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-07 01:03:45,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-07 01:03:45,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:03:45,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-11-07 01:03:45,535 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 5 [2021-11-07 01:03:45,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:03:45,535 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-11-07 01:03:45,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:03:45,536 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-11-07 01:03:45,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 01:03:45,537 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:03:45,537 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-07 01:03:45,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:03:45,538 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:03:45,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:03:45,540 INFO L85 PathProgramCache]: Analyzing trace with hash 112890113, now seen corresponding path program 1 times [2021-11-07 01:03:45,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:03:45,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217790573] [2021-11-07 01:03:45,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:03:45,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:03:45,558 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:03:45,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1864290230] [2021-11-07 01:03:45,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:03:45,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:03:45,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:03:45,562 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:03:45,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 01:03:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:03:45,630 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 01:03:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:03:45,689 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-07 01:03:45,691 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 01:03:45,693 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:03:45,695 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:03:45,696 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:03:45,696 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:03:45,697 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:03:45,698 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:03:45,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-07 01:03:45,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:03:45,917 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-07 01:03:45,920 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:03:45,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:03:45 BoogieIcfgContainer [2021-11-07 01:03:45,943 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:03:45,944 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:03:45,944 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:03:45,944 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:03:45,945 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:03:44" (3/4) ... [2021-11-07 01:03:45,951 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 01:03:45,951 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:03:45,956 INFO L168 Benchmark]: Toolchain (without parser) took 1893.18 ms. Allocated memory is still 125.8 MB. Free memory was 91.4 MB in the beginning and 60.1 MB in the end (delta: 31.3 MB). Peak memory consumption was 28.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:03:45,957 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 81.8 MB. Free memory is still 34.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:03:45,959 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.48 ms. Allocated memory is still 125.8 MB. Free memory was 91.0 MB in the beginning and 99.1 MB in the end (delta: -8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:03:45,965 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.22 ms. Allocated memory is still 125.8 MB. Free memory was 99.1 MB in the beginning and 97.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:03:45,966 INFO L168 Benchmark]: Boogie Preprocessor took 42.53 ms. Allocated memory is still 125.8 MB. Free memory was 97.4 MB in the beginning and 96.5 MB in the end (delta: 912.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:03:45,974 INFO L168 Benchmark]: RCFGBuilder took 515.18 ms. Allocated memory is still 125.8 MB. Free memory was 96.1 MB in the beginning and 84.8 MB in the end (delta: 11.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:03:45,975 INFO L168 Benchmark]: TraceAbstraction took 947.99 ms. Allocated memory is still 125.8 MB. Free memory was 84.4 MB in the beginning and 60.3 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:03:45,975 INFO L168 Benchmark]: Witness Printer took 7.48 ms. Allocated memory is still 125.8 MB. Free memory was 60.3 MB in the beginning and 60.1 MB in the end (delta: 170.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:03:45,979 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 81.8 MB. Free memory is still 34.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 327.48 ms. Allocated memory is still 125.8 MB. Free memory was 91.0 MB in the beginning and 99.1 MB in the end (delta: -8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.22 ms. Allocated memory is still 125.8 MB. Free memory was 99.1 MB in the beginning and 97.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.53 ms. Allocated memory is still 125.8 MB. Free memory was 97.4 MB in the beginning and 96.5 MB in the end (delta: 912.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 515.18 ms. Allocated memory is still 125.8 MB. Free memory was 96.1 MB in the beginning and 84.8 MB in the end (delta: 11.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 947.99 ms. Allocated memory is still 125.8 MB. Free memory was 84.4 MB in the beginning and 60.3 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 7.48 ms. Allocated memory is still 125.8 MB. Free memory was 60.3 MB in the beginning and 60.1 MB in the end (delta: 170.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 34. Possible FailurePath: [L24] int counter = 0; [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<5 [L17] COND TRUE !(cond) VAL [counter=1] [L19] reach_error() VAL [counter=1] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 4 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-07 01:03:46,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/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_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f4dc35f578dc1494a61593c536b677f3beb3e4db21638b64de73547c5a37e2be --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:03:48,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:03:48,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:03:49,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:03:49,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:03:49,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:03:49,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:03:49,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:03:49,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:03:49,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:03:49,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:03:49,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:03:49,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:03:49,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:03:49,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:03:49,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:03:49,107 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:03:49,113 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:03:49,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:03:49,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:03:49,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:03:49,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:03:49,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:03:49,137 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:03:49,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:03:49,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:03:49,143 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:03:49,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:03:49,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:03:49,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:03:49,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:03:49,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:03:49,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:03:49,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:03:49,156 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:03:49,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:03:49,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:03:49,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:03:49,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:03:49,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:03:49,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:03:49,177 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:03:49,238 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:03:49,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:03:49,240 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:03:49,241 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:03:49,241 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:03:49,241 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:03:49,242 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:03:49,242 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:03:49,242 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:03:49,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:03:49,246 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:03:49,246 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:03:49,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:03:49,247 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:03:49,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:03:49,248 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:03:49,248 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:03:49,248 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:03:49,249 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:03:49,249 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:03:49,249 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:03:49,249 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:03:49,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:03:49,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:03:49,250 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:03:49,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:03:49,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:03:49,251 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:03:49,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:03:49,252 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:03:49,252 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:03:49,253 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:03:49,253 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:03:49,253 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:03:49,254 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:03:49,255 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_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4dc35f578dc1494a61593c536b677f3beb3e4db21638b64de73547c5a37e2be [2021-11-07 01:03:49,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:03:49,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:03:49,782 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:03:49,784 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:03:49,785 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:03:49,786 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c [2021-11-07 01:03:49,878 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/data/0d385ab6c/85e9fbefe37b44c8a05b93a5269b7172/FLAGa3b6be5ce [2021-11-07 01:03:50,654 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:03:50,654 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c [2021-11-07 01:03:50,667 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/data/0d385ab6c/85e9fbefe37b44c8a05b93a5269b7172/FLAGa3b6be5ce [2021-11-07 01:03:50,683 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/data/0d385ab6c/85e9fbefe37b44c8a05b93a5269b7172 [2021-11-07 01:03:50,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:03:50,687 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:03:50,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:03:50,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:03:50,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:03:50,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:03:50" (1/1) ... [2021-11-07 01:03:50,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c9c1c2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:50, skipping insertion in model container [2021-11-07 01:03:50,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:03:50" (1/1) ... [2021-11-07 01:03:50,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:03:50,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:03:50,882 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c[709,722] [2021-11-07 01:03:50,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:03:50,945 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:03:50,961 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound5.c[709,722] [2021-11-07 01:03:50,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:03:50,996 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:03:50,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:50 WrapperNode [2021-11-07 01:03:50,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:03:50,998 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:03:50,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:03:50,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:03:51,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:50" (1/1) ... [2021-11-07 01:03:51,020 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:50" (1/1) ... [2021-11-07 01:03:51,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:03:51,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:03:51,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:03:51,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:03:51,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:50" (1/1) ... [2021-11-07 01:03:51,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:50" (1/1) ... [2021-11-07 01:03:51,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:50" (1/1) ... [2021-11-07 01:03:51,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:50" (1/1) ... [2021-11-07 01:03:51,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:50" (1/1) ... [2021-11-07 01:03:51,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:50" (1/1) ... [2021-11-07 01:03:51,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:50" (1/1) ... [2021-11-07 01:03:51,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:03:51,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:03:51,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:03:51,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:03:51,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:50" (1/1) ... [2021-11-07 01:03:51,117 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:03:51,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:03:51,156 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:03:51,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:03:51,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:03:51,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:03:51,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:03:51,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:04:03,459 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:04:03,460 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-11-07 01:04:03,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:04:03 BoogieIcfgContainer [2021-11-07 01:04:03,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:04:03,465 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:04:03,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:04:03,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:04:03,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:03:50" (1/3) ... [2021-11-07 01:04:03,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72105a8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:04:03, skipping insertion in model container [2021-11-07 01:04:03,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:03:50" (2/3) ... [2021-11-07 01:04:03,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72105a8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:04:03, skipping insertion in model container [2021-11-07 01:04:03,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:04:03" (3/3) ... [2021-11-07 01:04:03,474 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound5.c [2021-11-07 01:04:03,481 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:04:03,482 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 01:04:03,544 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:04:03,553 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:04:03,554 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 01:04:03,571 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 25 states have (on average 1.6) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:03,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 01:04:03,578 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:03,579 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 01:04:03,579 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:04:03,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:03,587 INFO L85 PathProgramCache]: Analyzing trace with hash 890922791, now seen corresponding path program 1 times [2021-11-07 01:04:03,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:04:03,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342162903] [2021-11-07 01:04:03,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:03,604 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:04:03,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:04:03,608 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:04:03,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:04:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:03,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:04:03,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:03,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:04:03,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:03,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:04:03,928 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:04:03,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342162903] [2021-11-07 01:04:03,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342162903] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:04:03,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:04:03,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:04:03,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093164433] [2021-11-07 01:04:03,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:04:03,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:04:03,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:04:03,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:04:03,958 INFO L87 Difference]: Start difference. First operand has 32 states, 25 states have (on average 1.6) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:03,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:03,984 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2021-11-07 01:04:03,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:04:03,986 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-07 01:04:03,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:03,996 INFO L225 Difference]: With dead ends: 62 [2021-11-07 01:04:03,997 INFO L226 Difference]: Without dead ends: 28 [2021-11-07 01:04:04,001 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:04:04,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-07 01:04:04,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-11-07 01:04:04,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:04,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-11-07 01:04:04,055 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2021-11-07 01:04:04,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:04:04,055 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-11-07 01:04:04,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:04,056 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-11-07 01:04:04,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 01:04:04,056 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:04,056 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 01:04:04,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:04,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:04:04,258 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:04:04,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:04,259 INFO L85 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-11-07 01:04:04,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:04:04,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1723313741] [2021-11-07 01:04:04,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:04,261 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:04:04,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:04:04,262 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:04:04,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:04:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:04,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:04:04,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:04,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:04:04,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:13,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:04:13,569 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:04:13,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1723313741] [2021-11-07 01:04:13,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1723313741] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:04:13,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:04:13,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-07 01:04:13,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667264960] [2021-11-07 01:04:13,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:04:13,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:04:13,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:04:13,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:04:13,574 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:36,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:36,455 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-11-07 01:04:36,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:04:36,456 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-07 01:04:36,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:36,458 INFO L225 Difference]: With dead ends: 39 [2021-11-07 01:04:36,458 INFO L226 Difference]: Without dead ends: 35 [2021-11-07 01:04:36,459 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:04:36,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-07 01:04:36,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2021-11-07 01:04:36,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 32 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:36,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-11-07 01:04:36,469 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 6 [2021-11-07 01:04:36,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:04:36,469 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-11-07 01:04:36,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:04:36,470 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-11-07 01:04:36,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:04:36,471 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:36,471 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:04:36,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:36,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:04:36,678 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:04:36,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:36,679 INFO L85 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2021-11-07 01:04:36,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:04:36,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853697637] [2021-11-07 01:04:36,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:36,681 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:04:36,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:04:36,690 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:04:36,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:04:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:37,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:04:37,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:40,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:04:40,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:47,213 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) is different from false [2021-11-07 01:04:49,259 WARN L860 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) is different from true [2021-11-07 01:05:15,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:05:15,260 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:05:15,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853697637] [2021-11-07 01:05:15,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853697637] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:05:15,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:05:15,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-11-07 01:05:15,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618771514] [2021-11-07 01:05:15,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:05:15,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:05:15,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:05:15,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=30, Unknown=2, NotChecked=10, Total=56 [2021-11-07 01:05:15,265 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:05:25,196 WARN L207 SmtUtils]: Spent 5.32 s on a formula simplification that was a NOOP. DAG size: 14 [2021-11-07 01:05:31,461 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~a~0_11 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (let ((.cse1 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)) v_ULTIMATE.start_main_~a~0_11))) (fp.sub c_currentRoundingMode .cse1 .cse1))) (_ bv0 32)))) is different from true [2021-11-07 01:05:34,242 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-07 01:06:25,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:25,042 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2021-11-07 01:06:25,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:06:25,043 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 01:06:25,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:25,044 INFO L225 Difference]: With dead ends: 36 [2021-11-07 01:06:25,044 INFO L226 Difference]: Without dead ends: 33 [2021-11-07 01:06:25,045 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 32.8s TimeCoverageRelationStatistics Valid=26, Invalid=54, Unknown=4, NotChecked=48, Total=132 [2021-11-07 01:06:25,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-07 01:06:25,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2021-11-07 01:06:25,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 30 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:25,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2021-11-07 01:06:25,055 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 8 [2021-11-07 01:06:25,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:25,056 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2021-11-07 01:06:25,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:25,056 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2021-11-07 01:06:25,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 01:06:25,057 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:25,057 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:25,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:25,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:06:25,287 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:06:25,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:25,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1248817364, now seen corresponding path program 1 times [2021-11-07 01:06:25,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:25,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030499239] [2021-11-07 01:06:25,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:25,289 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:25,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:25,290 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:25,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:06:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:25,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:06:25,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:25,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:25,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:26,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:26,027 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:06:26,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030499239] [2021-11-07 01:06:26,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030499239] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:26,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:26,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 01:06:26,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262453981] [2021-11-07 01:06:26,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:06:26,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:06:26,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:06:26,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:06:26,030 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:27,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:27,829 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2021-11-07 01:06:27,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:06:27,830 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-07 01:06:27,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:27,831 INFO L225 Difference]: With dead ends: 64 [2021-11-07 01:06:27,832 INFO L226 Difference]: Without dead ends: 50 [2021-11-07 01:06:27,832 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:06:27,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-07 01:06:27,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 36. [2021-11-07 01:06:27,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 35 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:27,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2021-11-07 01:06:27,843 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 9 [2021-11-07 01:06:27,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:27,843 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2021-11-07 01:06:27,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:27,844 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2021-11-07 01:06:27,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 01:06:27,845 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:27,845 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:27,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:28,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:06:28,058 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:06:28,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:28,059 INFO L85 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2021-11-07 01:06:28,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:06:28,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716263446] [2021-11-07 01:06:28,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:28,060 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:06:28,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:06:28,061 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:06:28,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:06:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:06:29,653 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 01:06:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:06:31,255 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-07 01:06:31,255 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 01:06:31,256 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:06:31,258 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:06:31,259 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:06:31,259 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:06:31,259 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:06:31,259 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:06:31,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:31,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:06:31,463 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-07 01:06:31,466 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:06:31,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:06:31 BoogieIcfgContainer [2021-11-07 01:06:31,511 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:06:31,511 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:06:31,512 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:06:31,512 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:06:31,512 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:04:03" (3/4) ... [2021-11-07 01:06:31,514 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-07 01:06:31,567 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 01:06:31,567 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:06:31,568 INFO L168 Benchmark]: Toolchain (without parser) took 160880.36 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 34.8 MB in the beginning and 36.9 MB in the end (delta: -2.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:06:31,570 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 56.6 MB. Free memory is still 37.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:06:31,571 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.78 ms. Allocated memory is still 56.6 MB. Free memory was 34.5 MB in the beginning and 39.1 MB in the end (delta: -4.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:06:31,578 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.03 ms. Allocated memory is still 56.6 MB. Free memory was 38.9 MB in the beginning and 37.2 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:06:31,578 INFO L168 Benchmark]: Boogie Preprocessor took 58.49 ms. Allocated memory is still 56.6 MB. Free memory was 37.2 MB in the beginning and 35.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:06:31,579 INFO L168 Benchmark]: RCFGBuilder took 12355.54 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 35.7 MB in the beginning and 52.4 MB in the end (delta: -16.8 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:06:31,579 INFO L168 Benchmark]: TraceAbstraction took 148045.75 ms. Allocated memory is still 71.3 MB. Free memory was 51.9 MB in the beginning and 39.0 MB in the end (delta: 12.8 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:06:31,580 INFO L168 Benchmark]: Witness Printer took 55.80 ms. Allocated memory is still 71.3 MB. Free memory was 39.0 MB in the beginning and 36.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:06:31,583 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 56.6 MB. Free memory is still 37.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 307.78 ms. Allocated memory is still 56.6 MB. Free memory was 34.5 MB in the beginning and 39.1 MB in the end (delta: -4.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.03 ms. Allocated memory is still 56.6 MB. Free memory was 38.9 MB in the beginning and 37.2 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.49 ms. Allocated memory is still 56.6 MB. Free memory was 37.2 MB in the beginning and 35.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 12355.54 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 35.7 MB in the beginning and 52.4 MB in the end (delta: -16.8 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 148045.75 ms. Allocated memory is still 71.3 MB. Free memory was 51.9 MB in the beginning and 39.0 MB in the end (delta: 12.8 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * Witness Printer took 55.80 ms. Allocated memory is still 71.3 MB. Free memory was 39.0 MB in the beginning and 36.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<5 [L17] COND FALSE !(!(cond)) VAL [counter=1] [L17] COND FALSE !(!(cond)) VAL [counter=1] [L17] COND TRUE !(cond) VAL [counter=1] [L19] reach_error() VAL [counter=1] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 147.9s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 94.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 104 SDtfs, 68 SDslu, 171 SDs, 0 SdLazy, 111 SolverSat, 21 SolverUnsat, 25 SolverUnknown, 0 SolverNotchecked, 76.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 39.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=4, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 18 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 3.2s SatisfiabilityAnalysisTime, 47.0s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 50 ConstructedInterpolants, 1 QuantifiedInterpolants, 320 SizeOfPredicates, 10 NumberOfNonLiveVariables, 140 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-07 01:06:31,795 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-11-07 01:06:31,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7c6c2ab1-7a51-4db1-8d64-8a9e7d2a387f/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 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