./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-18.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-18.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire --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 09678c77438823f5421658f269ea899b63adcdec9e9a366091e7381adf928989 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:21:44,135 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:21:44,231 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:21:44,243 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:21:44,244 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:21:44,296 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:21:44,296 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:21:44,297 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:21:44,298 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:21:44,303 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:21:44,304 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:21:44,304 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:21:44,305 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:21:44,307 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:21:44,307 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:21:44,308 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:21:44,308 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:21:44,309 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:21:44,309 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:21:44,310 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:21:44,310 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:21:44,311 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:21:44,312 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:21:44,312 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:21:44,313 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:21:44,313 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:21:44,313 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:21:44,314 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:21:44,314 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:21:44,315 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:21:44,315 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:21:44,316 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:21:44,316 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:21:44,316 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:21:44,317 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:21:44,317 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:21:44,317 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:21:44,318 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:21:44,318 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:21:44,318 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:21:44,319 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:21:44,319 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:21:44,319 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:21:44,320 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:21:44,320 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:21:44,320 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:21:44,320 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:21:44,321 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_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09678c77438823f5421658f269ea899b63adcdec9e9a366091e7381adf928989 [2023-11-23 21:21:44,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:21:44,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:21:44,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:21:44,673 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:21:44,673 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:21:44,675 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-18.i [2023-11-23 21:21:47,913 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:21:48,205 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:21:48,206 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-18.i [2023-11-23 21:21:48,216 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/data/f2e8e59ea/5c5d26dafbb044c887e0479786fd732d/FLAG2430c165f [2023-11-23 21:21:48,239 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/data/f2e8e59ea/5c5d26dafbb044c887e0479786fd732d [2023-11-23 21:21:48,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:21:48,249 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:21:48,253 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:21:48,254 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:21:48,260 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:21:48,264 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:21:48" (1/1) ... [2023-11-23 21:21:48,266 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2003c208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:48, skipping insertion in model container [2023-11-23 21:21:48,266 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:21:48" (1/1) ... [2023-11-23 21:21:48,296 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:21:48,462 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_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-18.i[915,928] [2023-11-23 21:21:48,490 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:21:48,501 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:21:48,513 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_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-18.i[915,928] [2023-11-23 21:21:48,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:21:48,554 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:21:48,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:48 WrapperNode [2023-11-23 21:21:48,555 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:21:48,556 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:21:48,557 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:21:48,557 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:21:48,565 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:48" (1/1) ... [2023-11-23 21:21:48,572 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:48" (1/1) ... [2023-11-23 21:21:48,597 INFO L138 Inliner]: procedures = 26, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 76 [2023-11-23 21:21:48,598 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:21:48,599 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:21:48,599 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:21:48,599 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:21:48,608 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:48" (1/1) ... [2023-11-23 21:21:48,608 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:48" (1/1) ... [2023-11-23 21:21:48,610 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:48" (1/1) ... [2023-11-23 21:21:48,610 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:48" (1/1) ... [2023-11-23 21:21:48,617 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:48" (1/1) ... [2023-11-23 21:21:48,621 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:48" (1/1) ... [2023-11-23 21:21:48,623 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:48" (1/1) ... [2023-11-23 21:21:48,624 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:48" (1/1) ... [2023-11-23 21:21:48,627 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:21:48,628 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:21:48,628 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:21:48,628 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:21:48,629 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:48" (1/1) ... [2023-11-23 21:21:48,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:21:48,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:21:48,667 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:21:48,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:21:48,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:21:48,725 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:21:48,726 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:21:48,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:21:48,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:21:48,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:21:48,837 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:21:48,841 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:21:49,138 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:21:49,290 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:21:49,292 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:21:49,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:21:49 BoogieIcfgContainer [2023-11-23 21:21:49,295 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:21:49,301 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:21:49,301 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:21:49,305 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:21:49,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:21:48" (1/3) ... [2023-11-23 21:21:49,308 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6c249d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:21:49, skipping insertion in model container [2023-11-23 21:21:49,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:48" (2/3) ... [2023-11-23 21:21:49,311 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e6c249d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:21:49, skipping insertion in model container [2023-11-23 21:21:49,311 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:21:49" (3/3) ... [2023-11-23 21:21:49,313 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-18.i [2023-11-23 21:21:49,337 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:21:49,338 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:21:49,408 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:21:49,417 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;@49e12a9a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:21:49,417 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:21:49,421 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-23 21:21:49,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-23 21:21:49,429 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:21:49,430 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:21:49,431 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:21:49,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:21:49,437 INFO L85 PathProgramCache]: Analyzing trace with hash -624168936, now seen corresponding path program 1 times [2023-11-23 21:21:49,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:21:49,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342482946] [2023-11-23 21:21:49,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:21:49,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:21:49,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:21:49,763 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:21:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:21:49,922 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:21:49,926 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:21:49,929 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:21:49,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:21:49,941 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:21:49,949 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:21:49,990 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:21:49 BoogieIcfgContainer [2023-11-23 21:21:49,990 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:21:49,991 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:21:49,992 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:21:49,992 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:21:49,992 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:21:49" (3/4) ... [2023-11-23 21:21:49,995 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:21:49,996 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:21:49,997 INFO L158 Benchmark]: Toolchain (without parser) took 1748.68ms. Allocated memory is still 176.2MB. Free memory was 132.1MB in the beginning and 77.6MB in the end (delta: 54.5MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2023-11-23 21:21:49,998 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 119.5MB. Free memory is still 63.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:21:49,998 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.39ms. Allocated memory is still 176.2MB. Free memory was 132.1MB in the beginning and 120.3MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 21:21:49,999 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.66ms. Allocated memory is still 176.2MB. Free memory was 120.3MB in the beginning and 118.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:21:50,000 INFO L158 Benchmark]: Boogie Preprocessor took 28.09ms. Allocated memory is still 176.2MB. Free memory was 118.8MB in the beginning and 117.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:21:50,000 INFO L158 Benchmark]: RCFGBuilder took 667.63ms. Allocated memory is still 176.2MB. Free memory was 117.5MB in the beginning and 101.5MB in the end (delta: 16.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 21:21:50,001 INFO L158 Benchmark]: TraceAbstraction took 689.98ms. Allocated memory is still 176.2MB. Free memory was 100.7MB in the beginning and 78.4MB in the end (delta: 22.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-23 21:21:50,002 INFO L158 Benchmark]: Witness Printer took 5.06ms. Allocated memory is still 176.2MB. Free memory is still 77.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:21:50,005 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 119.5MB. Free memory is still 63.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 302.39ms. Allocated memory is still 176.2MB. Free memory was 132.1MB in the beginning and 120.3MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.66ms. Allocated memory is still 176.2MB. Free memory was 120.3MB in the beginning and 118.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.09ms. Allocated memory is still 176.2MB. Free memory was 118.8MB in the beginning and 117.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 667.63ms. Allocated memory is still 176.2MB. Free memory was 117.5MB in the beginning and 101.5MB in the end (delta: 16.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 689.98ms. Allocated memory is still 176.2MB. Free memory was 100.7MB in the beginning and 78.4MB in the end (delta: 22.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 5.06ms. Allocated memory is still 176.2MB. Free memory is still 77.6MB. 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: 19]: 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 someBinaryDOUBLEComparisonOperation at line 33. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed short int var_1_1 = -1; [L23] double var_1_2 = 24.75; [L24] double var_1_3 = 16.7; [L25] double var_1_4 = 0.8; [L26] signed short int var_1_5 = -1; [L27] signed short int var_1_6 = 4; [L28] unsigned char var_1_7 = 0; [L29] unsigned char var_1_8 = 1; [L65] isInitial = 1 [L66] FCALL initially() [L67] COND TRUE 1 [L68] FCALL updateLastVariables() [L69] CALL updateVariables() [L41] var_1_2 = __VERIFIER_nondet_double() [L42] CALL assume_abort_if_not((var_1_2 >= -922337.2036854776000e+13F && var_1_2 <= -1.0e-20F) || (var_1_2 <= 9223372.036854776000e+12F && var_1_2 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_1=-1, var_1_3=167/10, var_1_4=4/5, var_1_5=-1, var_1_6=4, var_1_7=0, var_1_8=1] [L20] COND FALSE !(!cond) [L42] RET assume_abort_if_not((var_1_2 >= -922337.2036854776000e+13F && var_1_2 <= -1.0e-20F) || (var_1_2 <= 9223372.036854776000e+12F && var_1_2 >= 1.0e-20F )) VAL [isInitial=1, var_1_1=-1, var_1_3=167/10, var_1_4=4/5, var_1_5=-1, var_1_6=4, var_1_7=0, var_1_8=1] [L43] var_1_3 = __VERIFIER_nondet_double() [L44] CALL assume_abort_if_not((var_1_3 >= -922337.2036854776000e+13F && var_1_3 <= -1.0e-20F) || (var_1_3 <= 9223372.036854776000e+12F && var_1_3 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_1=-1, var_1_4=4/5, var_1_5=-1, var_1_6=4, var_1_7=0, var_1_8=1] [L20] COND FALSE !(!cond) [L44] RET assume_abort_if_not((var_1_3 >= -922337.2036854776000e+13F && var_1_3 <= -1.0e-20F) || (var_1_3 <= 9223372.036854776000e+12F && var_1_3 >= 1.0e-20F )) VAL [isInitial=1, var_1_1=-1, var_1_4=4/5, var_1_5=-1, var_1_6=4, var_1_7=0, var_1_8=1] [L45] CALL assume_abort_if_not(var_1_3 != 0.0F) VAL [\old(cond)=1, isInitial=1, var_1_1=-1, var_1_4=4/5, var_1_5=-1, var_1_6=4, var_1_7=0, var_1_8=1] [L20] COND FALSE !(!cond) [L45] RET assume_abort_if_not(var_1_3 != 0.0F) VAL [isInitial=1, var_1_1=-1, var_1_4=4/5, var_1_5=-1, var_1_6=4, var_1_7=0, var_1_8=1] [L46] var_1_4 = __VERIFIER_nondet_double() [L47] CALL assume_abort_if_not((var_1_4 >= -922337.2036854776000e+13F && var_1_4 <= -1.0e-20F) || (var_1_4 <= 9223372.036854776000e+12F && var_1_4 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_1=-1, var_1_5=-1, var_1_6=4, var_1_7=0, var_1_8=1] [L20] COND FALSE !(!cond) [L47] RET assume_abort_if_not((var_1_4 >= -922337.2036854776000e+13F && var_1_4 <= -1.0e-20F) || (var_1_4 <= 9223372.036854776000e+12F && var_1_4 >= 1.0e-20F )) VAL [isInitial=1, var_1_1=-1, var_1_5=-1, var_1_6=4, var_1_7=0, var_1_8=1] [L48] var_1_5 = __VERIFIER_nondet_short() [L49] CALL assume_abort_if_not(var_1_5 >= -16383) VAL [\old(cond)=1, isInitial=1, var_1_1=-1, var_1_5=-1, var_1_6=4, var_1_7=0, var_1_8=1] [L20] COND FALSE !(!cond) [L49] RET assume_abort_if_not(var_1_5 >= -16383) VAL [isInitial=1, var_1_1=-1, var_1_5=-1, var_1_6=4, var_1_7=0, var_1_8=1] [L50] CALL assume_abort_if_not(var_1_5 <= 16383) VAL [\old(cond)=1, isInitial=1, var_1_1=-1, var_1_5=-1, var_1_6=4, var_1_7=0, var_1_8=1] [L20] COND FALSE !(!cond) [L50] RET assume_abort_if_not(var_1_5 <= 16383) VAL [isInitial=1, var_1_1=-1, var_1_5=-1, var_1_6=4, var_1_7=0, var_1_8=1] [L51] var_1_6 = __VERIFIER_nondet_short() [L52] CALL assume_abort_if_not(var_1_6 >= -16383) VAL [\old(cond)=1, isInitial=1, var_1_1=-1, var_1_5=-1, var_1_6=-2, var_1_7=0, var_1_8=1] [L20] COND FALSE !(!cond) [L52] RET assume_abort_if_not(var_1_6 >= -16383) VAL [isInitial=1, var_1_1=-1, var_1_5=-1, var_1_6=-2, var_1_7=0, var_1_8=1] [L53] CALL assume_abort_if_not(var_1_6 <= 16383) VAL [\old(cond)=1, isInitial=1, var_1_1=-1, var_1_5=-1, var_1_6=-2, var_1_7=0, var_1_8=1] [L20] COND FALSE !(!cond) [L53] RET assume_abort_if_not(var_1_6 <= 16383) VAL [isInitial=1, var_1_1=-1, var_1_5=-1, var_1_6=-2, var_1_7=0, var_1_8=1] [L54] var_1_8 = __VERIFIER_nondet_uchar() [L55] CALL assume_abort_if_not(var_1_8 >= 1) VAL [\old(cond)=1, isInitial=1, var_1_1=-1, var_1_5=-1, var_1_6=-2, var_1_7=0, var_1_8=1] [L20] COND FALSE !(!cond) [L55] RET assume_abort_if_not(var_1_8 >= 1) VAL [isInitial=1, var_1_1=-1, var_1_5=-1, var_1_6=-2, var_1_7=0, var_1_8=1] [L56] CALL assume_abort_if_not(var_1_8 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_1=-1, var_1_5=-1, var_1_6=-2, var_1_7=0, var_1_8=1] [L20] COND FALSE !(!cond) [L56] RET assume_abort_if_not(var_1_8 <= 1) VAL [isInitial=1, var_1_1=-1, var_1_5=-1, var_1_6=-2, var_1_7=0, var_1_8=1] [L69] RET updateVariables() [L70] CALL step() [L33] COND FALSE !((var_1_2 + (15.3 / var_1_3)) > (- var_1_4)) [L36] var_1_1 = ((((var_1_6) < (var_1_5)) ? (var_1_6) : (var_1_5))) [L38] var_1_7 = var_1_8 [L70] RET step() [L71] CALL, EXPR property() [L61-L62] return (((var_1_2 + (15.3 / var_1_3)) > (- var_1_4)) ? (var_1_1 == ((signed short int) (var_1_5 + var_1_6))) : (var_1_1 == ((signed short int) ((((var_1_6) < (var_1_5)) ? (var_1_6) : (var_1_5)))))) && (var_1_7 == ((unsigned char) var_1_8)) ; [L71] RET, EXPR property() [L71] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, var_1_1=-2, var_1_5=-1, var_1_6=-2, var_1_7=1, var_1_8=1] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, var_1_1=-2, var_1_5=-1, var_1_6=-2, var_1_7=1, var_1_8=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 10, 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=25occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 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 [2023-11-23 21:21:50,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-18.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire --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 09678c77438823f5421658f269ea899b63adcdec9e9a366091e7381adf928989 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:21:52,830 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:21:52,968 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-23 21:21:52,980 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:21:52,981 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:21:53,031 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:21:53,033 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:21:53,033 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:21:53,034 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:21:53,039 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:21:53,040 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:21:53,040 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:21:53,041 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:21:53,042 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:21:53,043 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:21:53,043 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:21:53,045 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:21:53,045 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:21:53,046 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:21:53,047 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:21:53,047 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:21:53,048 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:21:53,048 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:21:53,049 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:21:53,049 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:21:53,049 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:21:53,050 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:21:53,050 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:21:53,051 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:21:53,051 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:21:53,052 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:21:53,053 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:21:53,053 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:21:53,053 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:21:53,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:21:53,054 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:21:53,054 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:21:53,054 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:21:53,055 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:21:53,056 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:21:53,056 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:21:53,056 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:21:53,056 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:21:53,057 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:21:53,057 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_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09678c77438823f5421658f269ea899b63adcdec9e9a366091e7381adf928989 [2023-11-23 21:21:53,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:21:53,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:21:53,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:21:53,511 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:21:53,512 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:21:53,513 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-18.i [2023-11-23 21:21:56,809 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:21:57,006 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:21:57,007 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-18.i [2023-11-23 21:21:57,016 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/data/322a3072f/0bef7c48c62d4d659595382b2c9446de/FLAG3152203c5 [2023-11-23 21:21:57,038 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/data/322a3072f/0bef7c48c62d4d659595382b2c9446de [2023-11-23 21:21:57,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:21:57,049 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:21:57,053 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:21:57,054 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:21:57,059 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:21:57,060 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:21:57" (1/1) ... [2023-11-23 21:21:57,061 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7399d529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:57, skipping insertion in model container [2023-11-23 21:21:57,061 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:21:57" (1/1) ... [2023-11-23 21:21:57,092 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:21:57,304 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_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-18.i[915,928] [2023-11-23 21:21:57,354 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:21:57,385 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:21:57,405 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_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-18.i[915,928] [2023-11-23 21:21:57,438 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:21:57,466 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:21:57,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:57 WrapperNode [2023-11-23 21:21:57,467 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:21:57,469 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:21:57,469 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:21:57,469 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:21:57,477 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:57" (1/1) ... [2023-11-23 21:21:57,503 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:57" (1/1) ... [2023-11-23 21:21:57,544 INFO L138 Inliner]: procedures = 27, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 74 [2023-11-23 21:21:57,546 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:21:57,548 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:21:57,549 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:21:57,549 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:21:57,559 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:57" (1/1) ... [2023-11-23 21:21:57,559 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:57" (1/1) ... [2023-11-23 21:21:57,571 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:57" (1/1) ... [2023-11-23 21:21:57,571 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:57" (1/1) ... [2023-11-23 21:21:57,593 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:57" (1/1) ... [2023-11-23 21:21:57,608 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:57" (1/1) ... [2023-11-23 21:21:57,610 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:57" (1/1) ... [2023-11-23 21:21:57,612 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:57" (1/1) ... [2023-11-23 21:21:57,615 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:21:57,619 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:21:57,620 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:21:57,620 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:21:57,621 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:57" (1/1) ... [2023-11-23 21:21:57,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:21:57,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:21:57,665 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:21:57,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:21:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:21:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:21:57,714 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:21:57,714 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:21:57,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:21:57,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:21:57,817 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:21:57,821 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:22:04,415 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:22:04,532 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:22:04,532 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:22:04,533 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:04 BoogieIcfgContainer [2023-11-23 21:22:04,533 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:22:04,550 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:22:04,550 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:22:04,554 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:22:04,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:21:57" (1/3) ... [2023-11-23 21:22:04,555 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c4916a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:22:04, skipping insertion in model container [2023-11-23 21:22:04,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:21:57" (2/3) ... [2023-11-23 21:22:04,558 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c4916a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:22:04, skipping insertion in model container [2023-11-23 21:22:04,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:04" (3/3) ... [2023-11-23 21:22:04,560 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-18.i [2023-11-23 21:22:04,582 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:22:04,582 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:22:04,652 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:22:04,662 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;@2673a04c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:22:04,663 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:22:04,668 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-23 21:22:04,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-23 21:22:04,682 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:04,683 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:22:04,684 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:04,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:04,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1766491661, now seen corresponding path program 1 times [2023-11-23 21:22:04,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:22:04,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [269526360] [2023-11-23 21:22:04,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:04,709 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 [2023-11-23 21:22:04,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:22:04,712 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 21:22:04,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:22:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:05,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:22:05,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:05,863 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-11-23 21:22:05,863 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:22:05,864 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:22:05,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [269526360] [2023-11-23 21:22:05,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [269526360] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:05,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:05,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:22:05,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884106416] [2023-11-23 21:22:05,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:05,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:22:05,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:22:05,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:22:05,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:22:05,920 INFO L87 Difference]: Start difference. First operand has 30 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 21:22:08,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:22:08,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:08,255 INFO L93 Difference]: Finished difference Result 57 states and 94 transitions. [2023-11-23 21:22:08,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:22:08,338 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 62 [2023-11-23 21:22:08,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:08,347 INFO L225 Difference]: With dead ends: 57 [2023-11-23 21:22:08,348 INFO L226 Difference]: Without dead ends: 28 [2023-11-23 21:22:08,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:22:08,357 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:08,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2023-11-23 21:22:08,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-23 21:22:08,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-11-23 21:22:08,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-23 21:22:08,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2023-11-23 21:22:08,408 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 62 [2023-11-23 21:22:08,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:08,409 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2023-11-23 21:22:08,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 21:22:08,410 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2023-11-23 21:22:08,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-23 21:22:08,413 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:08,414 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:22:08,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:22:08,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:22:08,633 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:08,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:08,634 INFO L85 PathProgramCache]: Analyzing trace with hash -231364019, now seen corresponding path program 1 times [2023-11-23 21:22:08,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:22:08,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1647726685] [2023-11-23 21:22:08,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:08,635 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 [2023-11-23 21:22:08,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:22:08,660 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 21:22:08,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:22:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:09,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 21:22:09,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:20,397 WARN L854 $PredicateComparison]: unable to prove that (and (= c_~var_1_1~0 ((_ extract 15 0) (bvadd ((_ sign_extend 16) c_~var_1_6~0) ((_ sign_extend 16) c_~var_1_5~0)))) (fp.gt (fp.add c_currentRoundingMode c_~var_1_2~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 153.0 10.0)) c_~var_1_3~0)) (fp.neg c_~var_1_4~0))) is different from false [2023-11-23 21:22:22,484 WARN L876 $PredicateComparison]: unable to prove that (and (= c_~var_1_1~0 ((_ extract 15 0) (bvadd ((_ sign_extend 16) c_~var_1_6~0) ((_ sign_extend 16) c_~var_1_5~0)))) (fp.gt (fp.add c_currentRoundingMode c_~var_1_2~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 153.0 10.0)) c_~var_1_3~0)) (fp.neg c_~var_1_4~0))) is different from true [2023-11-23 21:22:32,305 WARN L854 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) (exists ((~var_1_3~0 (_ FloatingPoint 11 53)) (~var_1_2~0 (_ FloatingPoint 11 53)) (~var_1_4~0 (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (fp.gt (fp.add currentRoundingMode ~var_1_2~0 (fp.div currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (/ 153.0 10.0)) ~var_1_3~0)) (fp.neg ~var_1_4~0)))) is different from false [2023-11-23 21:22:32,317 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-23 21:22:32,318 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:22:32,318 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:22:32,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1647726685] [2023-11-23 21:22:32,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1647726685] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:32,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:32,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:22:32,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042173308] [2023-11-23 21:22:32,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:32,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:22:32,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:22:32,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:22:32,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=2, Unknown=3, NotChecked=2, Total=12 [2023-11-23 21:22:32,322 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 21:22:34,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 21:22:34,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:34,601 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2023-11-23 21:22:34,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:22:34,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 62 [2023-11-23 21:22:34,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:34,682 INFO L225 Difference]: With dead ends: 32 [2023-11-23 21:22:34,682 INFO L226 Difference]: Without dead ends: 30 [2023-11-23 21:22:34,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=5, Invalid=2, Unknown=3, NotChecked=2, Total=12 [2023-11-23 21:22:34,684 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:34,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 48 Unchecked, 2.3s Time] [2023-11-23 21:22:34,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-23 21:22:34,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-11-23 21:22:34,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-23 21:22:34,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2023-11-23 21:22:34,693 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 62 [2023-11-23 21:22:34,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:34,695 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2023-11-23 21:22:34,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 21:22:34,696 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2023-11-23 21:22:34,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-23 21:22:34,698 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:34,699 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:22:34,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/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)] Ended with exit code 0 [2023-11-23 21:22:34,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/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 [2023-11-23 21:22:34,916 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:34,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:34,917 INFO L85 PathProgramCache]: Analyzing trace with hash -231304437, now seen corresponding path program 1 times [2023-11-23 21:22:34,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:22:34,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [684221202] [2023-11-23 21:22:34,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:34,918 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 [2023-11-23 21:22:34,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:22:34,920 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/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) [2023-11-23 21:22:34,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0614afe-edea-4c4c-b5b6-159c6dee6ed3/bin/utaipan-verify-mE87zJ7Ire/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)] Waiting until timeout for monitored process [2023-11-23 21:22:35,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:35,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 21:22:35,842 INFO L285 TraceCheckSpWp]: Computing forward predicates...