./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/float_int_inv_square.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/float_int_inv_square.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --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 a3f1488b0e5756e8d9e219e50ec38e84e8e4fac76b2e3a5e1785d4e14d4111d8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:57:14,242 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:57:14,335 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 04:57:14,342 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:57:14,343 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:57:14,376 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:57:14,377 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:57:14,378 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:57:14,380 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:57:14,382 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:57:14,383 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:57:14,383 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:57:14,384 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:57:14,384 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:57:14,385 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:57:14,385 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:57:14,386 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:57:14,386 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:57:14,387 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:57:14,387 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:57:14,388 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:57:14,388 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:57:14,390 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:57:14,390 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:57:14,390 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:57:14,391 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:57:14,391 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:57:14,392 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:57:14,392 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:57:14,393 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:57:14,394 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:57:14,394 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:57:14,395 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:57:14,395 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:57:14,395 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:57:14,395 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:57:14,396 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:57:14,396 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:57:14,396 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:57:14,396 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:57:14,397 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:57:14,397 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:57:14,397 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:57:14,398 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:57:14,398 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:57:14,398 INFO L153 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_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3f1488b0e5756e8d9e219e50ec38e84e8e4fac76b2e3a5e1785d4e14d4111d8 [2023-11-19 04:57:14,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:57:14,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:57:14,720 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:57:14,721 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:57:14,722 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:57:14,723 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/float-benchs/float_int_inv_square.c [2023-11-19 04:57:17,895 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:57:18,202 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:57:18,202 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/sv-benchmarks/c/float-benchs/float_int_inv_square.c [2023-11-19 04:57:18,219 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/data/d75aea55a/e0e138bea3d6438cb289a09421ae8339/FLAG073a81d1f [2023-11-19 04:57:18,237 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/data/d75aea55a/e0e138bea3d6438cb289a09421ae8339 [2023-11-19 04:57:18,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:57:18,253 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:57:18,257 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:57:18,257 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:57:18,268 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:57:18,268 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:57:18" (1/1) ... [2023-11-19 04:57:18,270 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45997188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:18, skipping insertion in model container [2023-11-19 04:57:18,270 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:57:18" (1/1) ... [2023-11-19 04:57:18,305 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:57:18,472 WARN L240 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_57899bce-542e-4671-9a8b-72fdd1e2961f/sv-benchmarks/c/float-benchs/float_int_inv_square.c[488,501] [2023-11-19 04:57:18,483 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:57:18,495 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:57:18,510 WARN L240 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_57899bce-542e-4671-9a8b-72fdd1e2961f/sv-benchmarks/c/float-benchs/float_int_inv_square.c[488,501] [2023-11-19 04:57:18,513 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:57:18,530 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:57:18,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:18 WrapperNode [2023-11-19 04:57:18,531 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:57:18,532 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:57:18,532 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:57:18,532 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:57:18,541 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:18" (1/1) ... [2023-11-19 04:57:18,553 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:18" (1/1) ... [2023-11-19 04:57:18,574 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2023-11-19 04:57:18,574 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:57:18,575 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:57:18,575 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:57:18,576 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:57:18,584 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:18" (1/1) ... [2023-11-19 04:57:18,585 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:18" (1/1) ... [2023-11-19 04:57:18,586 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:18" (1/1) ... [2023-11-19 04:57:18,586 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:18" (1/1) ... [2023-11-19 04:57:18,591 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:18" (1/1) ... [2023-11-19 04:57:18,593 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:18" (1/1) ... [2023-11-19 04:57:18,594 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:18" (1/1) ... [2023-11-19 04:57:18,595 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:18" (1/1) ... [2023-11-19 04:57:18,597 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:57:18,598 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:57:18,598 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:57:18,598 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:57:18,599 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:18" (1/1) ... [2023-11-19 04:57:18,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:57:18,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:57:18,641 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:57:18,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:57:18,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:57:18,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:57:18,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:57:18,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:57:18,770 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:57:18,773 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:57:18,965 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:57:19,061 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:57:19,062 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 04:57:19,074 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:57:19 BoogieIcfgContainer [2023-11-19 04:57:19,075 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:57:19,078 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:57:19,080 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:57:19,085 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:57:19,085 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:57:18" (1/3) ... [2023-11-19 04:57:19,086 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd475d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:57:19, skipping insertion in model container [2023-11-19 04:57:19,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:18" (2/3) ... [2023-11-19 04:57:19,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd475d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:57:19, skipping insertion in model container [2023-11-19 04:57:19,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:57:19" (3/3) ... [2023-11-19 04:57:19,092 INFO L112 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2023-11-19 04:57:19,117 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:57:19,117 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:57:19,190 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:57:19,200 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4e636b09, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:57:19,202 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:57:19,207 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 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) [2023-11-19 04:57:19,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 04:57:19,216 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:57:19,218 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 04:57:19,219 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:57:19,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:57:19,229 INFO L85 PathProgramCache]: Analyzing trace with hash 58046, now seen corresponding path program 1 times [2023-11-19 04:57:19,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:57:19,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189986787] [2023-11-19 04:57:19,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:57:19,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:57:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:57:19,382 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:57:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:57:19,436 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 04:57:19,441 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:57:19,443 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 04:57:19,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:57:19,451 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 04:57:19,458 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:57:19,479 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:57:19 BoogieIcfgContainer [2023-11-19 04:57:19,480 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:57:19,481 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:57:19,481 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:57:19,481 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:57:19,482 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:57:19" (3/4) ... [2023-11-19 04:57:19,484 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 04:57:19,486 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:57:19,487 INFO L158 Benchmark]: Toolchain (without parser) took 1233.71ms. Allocated memory is still 155.2MB. Free memory was 118.8MB in the beginning and 80.4MB in the end (delta: 38.4MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-11-19 04:57:19,488 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 155.2MB. Free memory is still 100.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:57:19,489 INFO L158 Benchmark]: CACSL2BoogieTranslator took 274.17ms. Allocated memory is still 155.2MB. Free memory was 118.5MB in the beginning and 108.4MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 04:57:19,489 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.42ms. Allocated memory is still 155.2MB. Free memory was 108.4MB in the beginning and 107.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:57:19,490 INFO L158 Benchmark]: Boogie Preprocessor took 21.96ms. Allocated memory is still 155.2MB. Free memory was 107.1MB in the beginning and 105.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:57:19,491 INFO L158 Benchmark]: RCFGBuilder took 476.91ms. Allocated memory is still 155.2MB. Free memory was 105.8MB in the beginning and 94.8MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 04:57:19,492 INFO L158 Benchmark]: TraceAbstraction took 401.73ms. Allocated memory is still 155.2MB. Free memory was 94.2MB in the beginning and 80.7MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 04:57:19,493 INFO L158 Benchmark]: Witness Printer took 5.22ms. Allocated memory is still 155.2MB. Free memory was 80.7MB in the beginning and 80.4MB in the end (delta: 313.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:57:19,497 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 155.2MB. Free memory is still 100.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 274.17ms. Allocated memory is still 155.2MB. Free memory was 118.5MB in the beginning and 108.4MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.42ms. Allocated memory is still 155.2MB. Free memory was 108.4MB in the beginning and 107.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.96ms. Allocated memory is still 155.2MB. Free memory was 107.1MB in the beginning and 105.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 476.91ms. Allocated memory is still 155.2MB. Free memory was 105.8MB in the beginning and 94.8MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 401.73ms. Allocated memory is still 155.2MB. Free memory was 94.2MB in the beginning and 80.7MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 5.22ms. Allocated memory is still 155.2MB. Free memory was 80.7MB in the beginning and 80.4MB in the end (delta: 313.3kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 11]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 22, overapproximation of someBinaryArithmeticFLOAToperation at line 21. Possible FailurePath: [L15] int x; [L16] float y, z; [L18] x = __VERIFIER_nondet_int() [L19] CALL assume_abort_if_not(x >= -10 && x <= 10) [L9] COND FALSE !(!cond) [L19] RET assume_abort_if_not(x >= -10 && x <= 10) [L21] y = x*x - 4.f [L22] CALL __VERIFIER_assert(y != 0.f) [L11] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L11] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 04:57:19,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/float_int_inv_square.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --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 a3f1488b0e5756e8d9e219e50ec38e84e8e4fac76b2e3a5e1785d4e14d4111d8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:57:22,393 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:57:22,487 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-19 04:57:22,493 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:57:22,493 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:57:22,523 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:57:22,524 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:57:22,525 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:57:22,525 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:57:22,526 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:57:22,527 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:57:22,527 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:57:22,528 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:57:22,528 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:57:22,529 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:57:22,529 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:57:22,530 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:57:22,531 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:57:22,531 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:57:22,532 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:57:22,532 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:57:22,532 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:57:22,533 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:57:22,533 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:57:22,534 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:57:22,534 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:57:22,534 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:57:22,535 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:57:22,535 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:57:22,536 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:57:22,536 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:57:22,536 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:57:22,537 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:57:22,537 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:57:22,537 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:57:22,538 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:57:22,538 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:57:22,538 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:57:22,538 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:57:22,538 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:57:22,539 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:57:22,539 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:57:22,539 INFO L153 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_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3f1488b0e5756e8d9e219e50ec38e84e8e4fac76b2e3a5e1785d4e14d4111d8 [2023-11-19 04:57:22,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:57:22,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:57:22,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:57:22,951 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:57:22,952 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:57:22,953 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/float-benchs/float_int_inv_square.c [2023-11-19 04:57:26,180 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:57:26,506 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:57:26,508 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/sv-benchmarks/c/float-benchs/float_int_inv_square.c [2023-11-19 04:57:26,516 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/data/fdaf6ecc4/fedfec0d791047edabeceb75ce8961b0/FLAGedff1761b [2023-11-19 04:57:26,536 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/data/fdaf6ecc4/fedfec0d791047edabeceb75ce8961b0 [2023-11-19 04:57:26,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:57:26,554 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:57:26,555 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:57:26,556 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:57:26,561 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:57:26,561 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:57:26" (1/1) ... [2023-11-19 04:57:26,565 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ebe54a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:26, skipping insertion in model container [2023-11-19 04:57:26,566 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:57:26" (1/1) ... [2023-11-19 04:57:26,587 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:57:26,791 WARN L240 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_57899bce-542e-4671-9a8b-72fdd1e2961f/sv-benchmarks/c/float-benchs/float_int_inv_square.c[488,501] [2023-11-19 04:57:26,810 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:57:26,830 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:57:26,849 WARN L240 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_57899bce-542e-4671-9a8b-72fdd1e2961f/sv-benchmarks/c/float-benchs/float_int_inv_square.c[488,501] [2023-11-19 04:57:26,854 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:57:26,878 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:57:26,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:26 WrapperNode [2023-11-19 04:57:26,879 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:57:26,881 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:57:26,881 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:57:26,881 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:57:26,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:26" (1/1) ... [2023-11-19 04:57:26,904 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:26" (1/1) ... [2023-11-19 04:57:26,926 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2023-11-19 04:57:26,927 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:57:26,928 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:57:26,928 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:57:26,928 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:57:26,938 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:26" (1/1) ... [2023-11-19 04:57:26,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:26" (1/1) ... [2023-11-19 04:57:26,954 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:26" (1/1) ... [2023-11-19 04:57:26,954 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:26" (1/1) ... [2023-11-19 04:57:26,962 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:26" (1/1) ... [2023-11-19 04:57:26,964 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:26" (1/1) ... [2023-11-19 04:57:26,966 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:26" (1/1) ... [2023-11-19 04:57:26,972 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:26" (1/1) ... [2023-11-19 04:57:26,985 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:57:26,986 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:57:26,986 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:57:26,986 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:57:26,987 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:26" (1/1) ... [2023-11-19 04:57:26,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:57:27,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:57:27,029 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:57:27,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:57:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:57:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:57:27,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:57:27,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:57:27,183 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:57:27,185 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:57:28,753 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:57:28,761 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:57:28,762 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 04:57:28,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:57:28 BoogieIcfgContainer [2023-11-19 04:57:28,770 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:57:28,773 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:57:28,773 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:57:28,779 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:57:28,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:57:26" (1/3) ... [2023-11-19 04:57:28,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2fa0cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:57:28, skipping insertion in model container [2023-11-19 04:57:28,781 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:57:26" (2/3) ... [2023-11-19 04:57:28,782 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2fa0cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:57:28, skipping insertion in model container [2023-11-19 04:57:28,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:57:28" (3/3) ... [2023-11-19 04:57:28,786 INFO L112 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2023-11-19 04:57:28,811 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:57:28,812 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:57:28,890 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:57:28,900 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4f061c48, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:57:28,900 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:57:28,905 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:57:28,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:57:28,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:57:28,914 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 04:57:28,914 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:57:28,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:57:28,920 INFO L85 PathProgramCache]: Analyzing trace with hash 889508713, now seen corresponding path program 1 times [2023-11-19 04:57:28,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:57:28,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1012569904] [2023-11-19 04:57:28,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:57:28,946 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:57:28,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:57:28,950 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:57:29,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 04:57:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:57:29,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 04:57:29,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:57:29,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:57:29,140 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:57:29,140 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:57:29,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1012569904] [2023-11-19 04:57:29,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1012569904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:57:29,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:57:29,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:57:29,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673512575] [2023-11-19 04:57:29,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:57:29,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:57:29,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:57:29,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:57:29,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:57:29,186 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2023-11-19 04:57:29,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:57:29,199 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2023-11-19 04:57:29,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:57:29,201 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 [2023-11-19 04:57:29,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:57:29,209 INFO L225 Difference]: With dead ends: 19 [2023-11-19 04:57:29,210 INFO L226 Difference]: Without dead ends: 7 [2023-11-19 04:57:29,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:57:29,218 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:57:29,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:57:29,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2023-11-19 04:57:29,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2023-11-19 04:57:29,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 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) [2023-11-19 04:57:29,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2023-11-19 04:57:29,249 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2023-11-19 04:57:29,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:57:29,250 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2023-11-19 04:57:29,250 INFO L496 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) [2023-11-19 04:57:29,250 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2023-11-19 04:57:29,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:57:29,251 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:57:29,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 04:57:29,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:57:29,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:57:29,457 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:57:29,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:57:29,457 INFO L85 PathProgramCache]: Analyzing trace with hash 889568295, now seen corresponding path program 1 times [2023-11-19 04:57:29,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:57:29,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [648280714] [2023-11-19 04:57:29,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:57:29,458 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:57:29,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:57:29,460 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 04:57:29,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-19 04:57:29,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:57:29,575 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:57:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:57:29,663 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-11-19 04:57:29,665 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:57:29,667 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 04:57:29,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:57:29,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 04:57:29,881 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 04:57:29,885 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:57:29,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:57:29 BoogieIcfgContainer [2023-11-19 04:57:29,917 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:57:29,919 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:57:29,919 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:57:29,920 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:57:29,920 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:57:28" (3/4) ... [2023-11-19 04:57:29,921 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-19 04:57:29,962 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 04:57:29,962 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:57:29,963 INFO L158 Benchmark]: Toolchain (without parser) took 3410.28ms. Allocated memory was 73.4MB in the beginning and 98.6MB in the end (delta: 25.2MB). Free memory was 49.2MB in the beginning and 48.5MB in the end (delta: 605.5kB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. [2023-11-19 04:57:29,963 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 73.4MB. Free memory is still 49.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:57:29,964 INFO L158 Benchmark]: CACSL2BoogieTranslator took 324.32ms. Allocated memory is still 73.4MB. Free memory was 48.9MB in the beginning and 38.2MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 04:57:29,964 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.22ms. Allocated memory is still 73.4MB. Free memory was 38.2MB in the beginning and 36.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:57:29,965 INFO L158 Benchmark]: Boogie Preprocessor took 57.28ms. Allocated memory is still 73.4MB. Free memory was 36.7MB in the beginning and 35.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:57:29,965 INFO L158 Benchmark]: RCFGBuilder took 1783.62ms. Allocated memory was 73.4MB in the beginning and 98.6MB in the end (delta: 25.2MB). Free memory was 35.3MB in the beginning and 72.3MB in the end (delta: -37.0MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2023-11-19 04:57:29,966 INFO L158 Benchmark]: TraceAbstraction took 1144.23ms. Allocated memory is still 98.6MB. Free memory was 71.7MB in the beginning and 50.0MB in the end (delta: 21.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-19 04:57:29,966 INFO L158 Benchmark]: Witness Printer took 42.81ms. Allocated memory is still 98.6MB. Free memory was 50.0MB in the beginning and 48.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:57:29,969 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 73.4MB. Free memory is still 49.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 324.32ms. Allocated memory is still 73.4MB. Free memory was 48.9MB in the beginning and 38.2MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.22ms. Allocated memory is still 73.4MB. Free memory was 38.2MB in the beginning and 36.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.28ms. Allocated memory is still 73.4MB. Free memory was 36.7MB in the beginning and 35.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1783.62ms. Allocated memory was 73.4MB in the beginning and 98.6MB in the end (delta: 25.2MB). Free memory was 35.3MB in the beginning and 72.3MB in the end (delta: -37.0MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1144.23ms. Allocated memory is still 98.6MB. Free memory was 71.7MB in the beginning and 50.0MB in the end (delta: 21.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 42.81ms. Allocated memory is still 98.6MB. Free memory was 50.0MB in the beginning and 48.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 11]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L15] int x; [L16] float y, z; [L18] x = __VERIFIER_nondet_int() [L19] CALL assume_abort_if_not(x >= -10 && x <= 10) [L9] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L19] RET assume_abort_if_not(x >= -10 && x <= 10) [L21] y = x*x - 4.f [L22] CALL __VERIFIER_assert(y != 0.f) [L11] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L11] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 10 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 21 ConjunctsInSsa, 1 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 proved your program to be incorrect! [2023-11-19 04:57:30,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57899bce-542e-4671-9a8b-72fdd1e2961f/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE