./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/loop-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/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_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/loop-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/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_766da5df-45a6-4ef0-8bd3-11fee238fe9f/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 1b0545f8921a3072195050599e45eb6fe3a423f5bd887720e0418c3666aaad9b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:53:43,349 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:53:43,494 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 04:53:43,508 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:53:43,509 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:53:43,555 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:53:43,556 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:53:43,557 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:53:43,558 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:53:43,564 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:53:43,564 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:53:43,566 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:53:43,566 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:53:43,568 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:53:43,569 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:53:43,569 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:53:43,570 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:53:43,570 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:53:43,571 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:53:43,571 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:53:43,572 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:53:43,573 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:53:43,574 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:53:43,574 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:53:43,575 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:53:43,575 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:53:43,576 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:53:43,576 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:53:43,577 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:53:43,577 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:53:43,579 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:53:43,579 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:53:43,580 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:53:43,580 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:53:43,580 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:53:43,581 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:53:43,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:53:43,581 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:53:43,582 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:53:43,582 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:53:43,582 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:53:43,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:53:43,583 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:53:43,583 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:53:43,584 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:53:43,584 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_766da5df-45a6-4ef0-8bd3-11fee238fe9f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b0545f8921a3072195050599e45eb6fe3a423f5bd887720e0418c3666aaad9b [2023-11-19 04:53:43,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:53:44,018 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:53:44,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:53:44,022 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:53:44,023 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:53:44,025 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/float-benchs/loop-1.c [2023-11-19 04:53:47,311 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:53:47,536 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:53:47,537 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/sv-benchmarks/c/float-benchs/loop-1.c [2023-11-19 04:53:47,544 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ/data/5d0d86ce8/e576eb144a1d492ea9ba75b3cb4b0ed3/FLAG1743fb9c0 [2023-11-19 04:53:47,558 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ/data/5d0d86ce8/e576eb144a1d492ea9ba75b3cb4b0ed3 [2023-11-19 04:53:47,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:53:47,562 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:53:47,564 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:53:47,564 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:53:47,569 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:53:47,570 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:53:47" (1/1) ... [2023-11-19 04:53:47,571 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cb4fb03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:47, skipping insertion in model container [2023-11-19 04:53:47,571 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:53:47" (1/1) ... [2023-11-19 04:53:47,593 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:53:47,728 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_766da5df-45a6-4ef0-8bd3-11fee238fe9f/sv-benchmarks/c/float-benchs/loop-1.c[311,324] [2023-11-19 04:53:47,742 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:53:47,754 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:53:47,766 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_766da5df-45a6-4ef0-8bd3-11fee238fe9f/sv-benchmarks/c/float-benchs/loop-1.c[311,324] [2023-11-19 04:53:47,769 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:53:47,784 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:53:47,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:47 WrapperNode [2023-11-19 04:53:47,784 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:53:47,785 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:53:47,786 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:53:47,786 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:53:47,793 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:47" (1/1) ... [2023-11-19 04:53:47,801 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:47" (1/1) ... [2023-11-19 04:53:47,821 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 31 [2023-11-19 04:53:47,821 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:53:47,822 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:53:47,822 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:53:47,822 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:53:47,831 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:47" (1/1) ... [2023-11-19 04:53:47,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:47" (1/1) ... [2023-11-19 04:53:47,832 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:47" (1/1) ... [2023-11-19 04:53:47,832 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:47" (1/1) ... [2023-11-19 04:53:47,837 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:47" (1/1) ... [2023-11-19 04:53:47,840 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:47" (1/1) ... [2023-11-19 04:53:47,841 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:47" (1/1) ... [2023-11-19 04:53:47,843 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:47" (1/1) ... [2023-11-19 04:53:47,844 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:53:47,845 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:53:47,845 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:53:47,846 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:53:47,847 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:47" (1/1) ... [2023-11-19 04:53:47,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:53:47,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:53:47,896 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:53:47,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:53:47,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:53:47,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:53:47,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:53:47,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:53:48,053 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:53:48,056 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:53:48,234 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:53:48,266 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:53:48,266 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:53:48,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:53:48 BoogieIcfgContainer [2023-11-19 04:53:48,271 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:53:48,274 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:53:48,274 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:53:48,278 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:53:48,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:53:47" (1/3) ... [2023-11-19 04:53:48,279 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e40976f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:53:48, skipping insertion in model container [2023-11-19 04:53:48,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:47" (2/3) ... [2023-11-19 04:53:48,280 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e40976f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:53:48, skipping insertion in model container [2023-11-19 04:53:48,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:53:48" (3/3) ... [2023-11-19 04:53:48,281 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-1.c [2023-11-19 04:53:48,299 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:53:48,299 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:53:48,344 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:53:48,352 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;@4eaf2219, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:53:48,352 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:53:48,357 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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 04:53:48,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 04:53:48,365 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:53:48,365 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 04:53:48,366 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:53:48,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:53:48,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1880294, now seen corresponding path program 1 times [2023-11-19 04:53:48,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:53:48,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511689669] [2023-11-19 04:53:48,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:53:48,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:53:48,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:53:48,497 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:53:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:53:48,530 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 04:53:48,532 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:53:48,533 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 04:53:48,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:53:48,541 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 04:53:48,548 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 04:53:48,578 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:53:48 BoogieIcfgContainer [2023-11-19 04:53:48,591 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 04:53:48,592 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 04:53:48,592 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 04:53:48,592 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 04:53:48,593 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:53:48" (3/4) ... [2023-11-19 04:53:48,596 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 04:53:48,602 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 04:53:48,604 INFO L158 Benchmark]: Toolchain (without parser) took 1041.49ms. Allocated memory was 123.7MB in the beginning and 169.9MB in the end (delta: 46.1MB). Free memory was 78.9MB in the beginning and 123.3MB in the end (delta: -44.4MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2023-11-19 04:53:48,605 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 123.7MB. Free memory was 87.9MB in the beginning and 87.9MB in the end (delta: 25.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:53:48,606 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.12ms. Allocated memory is still 123.7MB. Free memory was 78.6MB in the beginning and 68.4MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 04:53:48,608 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.83ms. Allocated memory is still 123.7MB. Free memory was 68.4MB in the beginning and 67.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 04:53:48,609 INFO L158 Benchmark]: Boogie Preprocessor took 22.68ms. Allocated memory is still 123.7MB. Free memory was 67.0MB in the beginning and 66.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:53:48,610 INFO L158 Benchmark]: RCFGBuilder took 425.73ms. Allocated memory was 123.7MB in the beginning and 169.9MB in the end (delta: 46.1MB). Free memory was 66.0MB in the beginning and 137.1MB in the end (delta: -71.1MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. [2023-11-19 04:53:48,611 INFO L158 Benchmark]: TraceAbstraction took 317.00ms. Allocated memory is still 169.9MB. Free memory was 137.1MB in the beginning and 123.3MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 04:53:48,613 INFO L158 Benchmark]: Witness Printer took 11.06ms. Allocated memory is still 169.9MB. Free memory is still 123.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:53:48,617 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 123.7MB. Free memory was 87.9MB in the beginning and 87.9MB in the end (delta: 25.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 221.12ms. Allocated memory is still 123.7MB. Free memory was 78.6MB in the beginning and 68.4MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.83ms. Allocated memory is still 123.7MB. Free memory was 68.4MB in the beginning and 67.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.68ms. Allocated memory is still 123.7MB. Free memory was 67.0MB in the beginning and 66.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 425.73ms. Allocated memory was 123.7MB in the beginning and 169.9MB in the end (delta: 46.1MB). Free memory was 66.0MB in the beginning and 137.1MB in the end (delta: -71.1MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. * TraceAbstraction took 317.00ms. Allocated memory is still 169.9MB. Free memory was 137.1MB in the beginning and 123.3MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 11.06ms. Allocated memory is still 169.9MB. Free memory is still 123.3MB. 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: 4]: 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 14, overapproximation of someBinaryDOUBLEComparisonOperation at line 20. Possible FailurePath: [L8] float x, y, z; [L10] x = 1.f [L11] y = 1e7 [L12] z = 42.f VAL [x=1, y=10000000, z=42] [L14] COND FALSE !(x < y) [L20] CALL __VERIFIER_assert(z >= 0.f && z <= 1e8) [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L4] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, 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=7occurred 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, 4 NumberOfCodeBlocks, 4 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 04:53:48,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/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_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/loop-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/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_766da5df-45a6-4ef0-8bd3-11fee238fe9f/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 1b0545f8921a3072195050599e45eb6fe3a423f5bd887720e0418c3666aaad9b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:53:51,585 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:53:51,726 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-19 04:53:51,739 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:53:51,739 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:53:51,776 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:53:51,777 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:53:51,778 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:53:51,779 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:53:51,779 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:53:51,780 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:53:51,781 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:53:51,781 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:53:51,782 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:53:51,785 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:53:51,785 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:53:51,788 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:53:51,793 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:53:51,793 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:53:51,794 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:53:51,796 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:53:51,797 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:53:51,797 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:53:51,798 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:53:51,798 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:53:51,799 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:53:51,799 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:53:51,799 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:53:51,800 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:53:51,800 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:53:51,802 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:53:51,802 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:53:51,802 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:53:51,803 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:53:51,803 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:53:51,804 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:53:51,804 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:53:51,804 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:53:51,804 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:53:51,805 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:53:51,806 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:53:51,806 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:53:51,806 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_766da5df-45a6-4ef0-8bd3-11fee238fe9f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b0545f8921a3072195050599e45eb6fe3a423f5bd887720e0418c3666aaad9b [2023-11-19 04:53:52,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:53:52,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:53:52,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:53:52,328 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:53:52,328 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:53:52,330 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/float-benchs/loop-1.c [2023-11-19 04:53:55,600 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:53:55,911 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:53:55,912 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/sv-benchmarks/c/float-benchs/loop-1.c [2023-11-19 04:53:55,921 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ/data/27b31b436/82a3906287b747fca164f87c7ba7f7f9/FLAG6a12e1cca [2023-11-19 04:53:55,943 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ/data/27b31b436/82a3906287b747fca164f87c7ba7f7f9 [2023-11-19 04:53:55,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:53:55,950 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:53:55,951 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:53:55,958 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:53:55,965 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:53:55,966 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:53:55" (1/1) ... [2023-11-19 04:53:55,968 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68b22025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:55, skipping insertion in model container [2023-11-19 04:53:55,968 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:53:55" (1/1) ... [2023-11-19 04:53:55,990 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:53:56,144 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_766da5df-45a6-4ef0-8bd3-11fee238fe9f/sv-benchmarks/c/float-benchs/loop-1.c[311,324] [2023-11-19 04:53:56,161 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:53:56,182 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:53:56,197 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_766da5df-45a6-4ef0-8bd3-11fee238fe9f/sv-benchmarks/c/float-benchs/loop-1.c[311,324] [2023-11-19 04:53:56,201 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:53:56,221 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:53:56,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:56 WrapperNode [2023-11-19 04:53:56,222 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:53:56,224 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:53:56,224 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:53:56,224 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:53:56,233 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:56" (1/1) ... [2023-11-19 04:53:56,249 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:56" (1/1) ... [2023-11-19 04:53:56,275 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32 [2023-11-19 04:53:56,276 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:53:56,277 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:53:56,277 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:53:56,277 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:53:56,289 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:56" (1/1) ... [2023-11-19 04:53:56,289 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:56" (1/1) ... [2023-11-19 04:53:56,309 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:56" (1/1) ... [2023-11-19 04:53:56,310 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:56" (1/1) ... [2023-11-19 04:53:56,319 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:56" (1/1) ... [2023-11-19 04:53:56,327 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:56" (1/1) ... [2023-11-19 04:53:56,335 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:56" (1/1) ... [2023-11-19 04:53:56,337 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:56" (1/1) ... [2023-11-19 04:53:56,345 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:53:56,348 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:53:56,349 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:53:56,349 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:53:56,350 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:56" (1/1) ... [2023-11-19 04:53:56,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:53:56,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:53:56,393 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:53:56,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:53:56,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:53:56,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:53:56,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:53:56,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:53:56,528 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:53:56,530 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:53:57,238 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:53:57,246 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:53:57,246 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 04:53:57,249 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:53:57 BoogieIcfgContainer [2023-11-19 04:53:57,250 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:53:57,254 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:53:57,254 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:53:57,263 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:53:57,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:53:55" (1/3) ... [2023-11-19 04:53:57,264 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68fb586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:53:57, skipping insertion in model container [2023-11-19 04:53:57,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:53:56" (2/3) ... [2023-11-19 04:53:57,267 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68fb586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:53:57, skipping insertion in model container [2023-11-19 04:53:57,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:53:57" (3/3) ... [2023-11-19 04:53:57,268 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-1.c [2023-11-19 04:53:57,294 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:53:57,294 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:53:57,367 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:53:57,375 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;@447c3c9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:53:57,376 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:53:57,380 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 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) [2023-11-19 04:53:57,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:53:57,391 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:53:57,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 04:53:57,393 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:53:57,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:53:57,400 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2023-11-19 04:53:57,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:53:57,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1841906876] [2023-11-19 04:53:57,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:53:57,418 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 04:53:57,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:53:57,422 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/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 04:53:57,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/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 04:53:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:53:57,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:53:57,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:53:57,713 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 04:53:57,716 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:53:57,717 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:53:57,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1841906876] [2023-11-19 04:53:57,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1841906876] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:53:57,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:53:57,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:53:57,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139618415] [2023-11-19 04:53:57,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:53:57,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:53:57,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:53:57,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:53:57,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:53:57,786 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 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) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 04:53:58,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:53:58,209 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2023-11-19 04:53:58,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:53:58,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 04:53:58,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:53:58,224 INFO L225 Difference]: With dead ends: 20 [2023-11-19 04:53:58,224 INFO L226 Difference]: Without dead ends: 8 [2023-11-19 04:53:58,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:53:58,233 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:53:58,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 04:53:58,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-11-19 04:53:58,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-11-19 04:53:58,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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 04:53:58,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-11-19 04:53:58,271 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2023-11-19 04:53:58,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:53:58,272 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-11-19 04:53:58,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 04:53:58,273 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-11-19 04:53:58,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:53:58,274 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:53:58,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:53:58,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/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 04:53:58,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/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 04:53:58,479 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:53:58,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:53:58,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2023-11-19 04:53:58,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:53:58,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1586432979] [2023-11-19 04:53:58,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:53:58,481 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 04:53:58,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:53:58,483 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/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 04:53:58,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/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 04:53:58,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:53:58,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 04:53:58,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:53:58,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:53:58,727 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:54:03,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:54:03,091 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:54:03,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1586432979] [2023-11-19 04:54:03,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1586432979] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:54:03,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1548234851] [2023-11-19 04:54:03,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:03,092 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 04:54:03,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 04:54:03,101 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 04:54:03,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-11-19 04:54:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:03,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:54:03,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:54:03,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:54:03,568 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:54:04,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:54:04,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1548234851] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:54:04,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480967053] [2023-11-19 04:54:04,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:54:04,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:54:04,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:54:04,030 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:54:04,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 04:54:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:54:04,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 04:54:04,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:54:04,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:54:04,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:54:07,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:54:07,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480967053] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:54:07,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-19 04:54:07,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 9 [2023-11-19 04:54:07,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430569297] [2023-11-19 04:54:07,703 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-19 04:54:07,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 04:54:07,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:54:07,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 04:54:07,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=44, Unknown=1, NotChecked=0, Total=72 [2023-11-19 04:54:07,706 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:54:14,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-19 04:54:19,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:54:19,441 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2023-11-19 04:54:19,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 04:54:19,452 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 04:54:19,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:54:19,453 INFO L225 Difference]: With dead ends: 15 [2023-11-19 04:54:19,453 INFO L226 Difference]: Without dead ends: 11 [2023-11-19 04:54:19,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=56, Invalid=99, Unknown=1, NotChecked=0, Total=156 [2023-11-19 04:54:19,456 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-19 04:54:19,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 11 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-19 04:54:19,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-11-19 04:54:19,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-11-19 04:54:19,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 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) [2023-11-19 04:54:19,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-11-19 04:54:19,462 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2023-11-19 04:54:19,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:54:19,462 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-11-19 04:54:19,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:54:19,463 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-11-19 04:54:19,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 04:54:19,463 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:54:19,463 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-11-19 04:54:19,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/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 04:54:19,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2023-11-19 04:54:19,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 04:54:20,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/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=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:54:20,068 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:54:20,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:54:20,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1922847381, now seen corresponding path program 2 times [2023-11-19 04:54:20,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:54:20,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077338463] [2023-11-19 04:54:20,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 04:54:20,070 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 04:54:20,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:54:20,072 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/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 04:54:20,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766da5df-45a6-4ef0-8bd3-11fee238fe9f/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 (6)] Waiting until timeout for monitored process [2023-11-19 04:54:20,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 04:54:20,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 04:54:20,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 04:54:20,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:54:23,474 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:54:23,474 INFO L327 TraceCheckSpWp]: Computing backward predicates...