./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-79.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-79.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh --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 e506e1f7b38bbd8fe6b4b58e9d148d1ba7590120c1d7e1a0e5beae3abdd695ad --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:11:35,531 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:11:35,594 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 13:11:35,598 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:11:35,598 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:11:35,629 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:11:35,630 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:11:35,630 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:11:35,631 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:11:35,631 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:11:35,632 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:11:35,632 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:11:35,633 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:11:35,633 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:11:35,634 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:11:35,635 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:11:35,635 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:11:35,636 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:11:35,636 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:11:35,637 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:11:35,637 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:11:35,638 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:11:35,639 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:11:35,639 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:11:35,640 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:11:35,640 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:11:35,641 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:11:35,641 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:11:35,642 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:11:35,642 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:11:35,642 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:11:35,643 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:11:35,643 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:11:35,643 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:11:35,649 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:11:35,650 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:11:35,650 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:11:35,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:11:35,650 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:11:35,651 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:11:35,651 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:11:35,651 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:11:35,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:11:35,651 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:11:35,652 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:11:35,652 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:11:35,652 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:11:35,652 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_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e506e1f7b38bbd8fe6b4b58e9d148d1ba7590120c1d7e1a0e5beae3abdd695ad [2023-12-02 13:11:35,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:11:35,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:11:35,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:11:35,879 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:11:35,880 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:11:35,881 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-79.i [2023-12-02 13:11:38,649 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:11:38,833 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:11:38,833 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-79.i [2023-12-02 13:11:38,842 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/data/9cf2344bb/3a9989d7b31c41f1965586d6134ca4f1/FLAGe3d3f9681 [2023-12-02 13:11:38,856 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/data/9cf2344bb/3a9989d7b31c41f1965586d6134ca4f1 [2023-12-02 13:11:38,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:11:38,860 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:11:38,861 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:11:38,862 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:11:38,867 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:11:38,867 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:11:38" (1/1) ... [2023-12-02 13:11:38,869 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a091ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:38, skipping insertion in model container [2023-12-02 13:11:38,869 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:11:38" (1/1) ... [2023-12-02 13:11:38,896 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:11:39,040 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_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-79.i[915,928] [2023-12-02 13:11:39,073 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:11:39,084 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:11:39,096 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_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-79.i[915,928] [2023-12-02 13:11:39,111 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:11:39,128 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:11:39,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:39 WrapperNode [2023-12-02 13:11:39,128 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:11:39,130 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:11:39,130 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:11:39,130 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:11:39,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:39" (1/1) ... [2023-12-02 13:11:39,146 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:39" (1/1) ... [2023-12-02 13:11:39,170 INFO L138 Inliner]: procedures = 26, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 103 [2023-12-02 13:11:39,171 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:11:39,171 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:11:39,172 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:11:39,172 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:11:39,181 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:39" (1/1) ... [2023-12-02 13:11:39,181 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:39" (1/1) ... [2023-12-02 13:11:39,184 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:39" (1/1) ... [2023-12-02 13:11:39,184 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:39" (1/1) ... [2023-12-02 13:11:39,189 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:39" (1/1) ... [2023-12-02 13:11:39,193 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:39" (1/1) ... [2023-12-02 13:11:39,194 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:39" (1/1) ... [2023-12-02 13:11:39,195 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:39" (1/1) ... [2023-12-02 13:11:39,198 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:11:39,199 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:11:39,199 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:11:39,199 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:11:39,200 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:39" (1/1) ... [2023-12-02 13:11:39,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:11:39,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:11:39,231 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:11:39,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:11:39,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:11:39,264 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 13:11:39,265 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 13:11:39,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 13:11:39,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:11:39,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:11:39,344 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:11:39,346 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:11:39,532 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:11:39,641 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:11:39,641 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 13:11:39,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:11:39 BoogieIcfgContainer [2023-12-02 13:11:39,643 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:11:39,646 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:11:39,646 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:11:39,649 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:11:39,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:11:38" (1/3) ... [2023-12-02 13:11:39,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54ce493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:11:39, skipping insertion in model container [2023-12-02 13:11:39,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:39" (2/3) ... [2023-12-02 13:11:39,650 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54ce493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:11:39, skipping insertion in model container [2023-12-02 13:11:39,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:11:39" (3/3) ... [2023-12-02 13:11:39,652 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-79.i [2023-12-02 13:11:39,666 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:11:39,667 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 13:11:39,709 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:11:39,715 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;@352efd4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:11:39,715 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 13:11:39,718 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 13:11:39,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-02 13:11:39,726 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:11:39,727 INFO L195 NwaCegarLoop]: trace histogram [13, 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, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:11:39,727 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:11:39,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:11:39,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1017083712, now seen corresponding path program 1 times [2023-12-02 13:11:39,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:11:39,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286262805] [2023-12-02 13:11:39,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:11:39,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:11:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 13:11:39,949 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 13:11:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 13:11:40,106 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 13:11:40,108 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 13:11:40,109 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 13:11:40,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 13:11:40,117 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 13:11:40,121 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 13:11:40,170 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 01:11:40 BoogieIcfgContainer [2023-12-02 13:11:40,170 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 13:11:40,171 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 13:11:40,171 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 13:11:40,171 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 13:11:40,172 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:11:39" (3/4) ... [2023-12-02 13:11:40,174 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 13:11:40,175 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 13:11:40,176 INFO L158 Benchmark]: Toolchain (without parser) took 1316.02ms. Allocated memory was 142.6MB in the beginning and 180.4MB in the end (delta: 37.7MB). Free memory was 103.5MB in the beginning and 143.6MB in the end (delta: -40.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 13:11:40,177 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 142.6MB. Free memory is still 109.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 13:11:40,177 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.51ms. Allocated memory is still 142.6MB. Free memory was 103.0MB in the beginning and 90.9MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 13:11:40,178 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.26ms. Allocated memory is still 142.6MB. Free memory was 90.9MB in the beginning and 89.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 13:11:40,179 INFO L158 Benchmark]: Boogie Preprocessor took 26.70ms. Allocated memory is still 142.6MB. Free memory was 89.3MB in the beginning and 87.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 13:11:40,179 INFO L158 Benchmark]: RCFGBuilder took 444.12ms. Allocated memory is still 142.6MB. Free memory was 87.4MB in the beginning and 66.5MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 13:11:40,180 INFO L158 Benchmark]: TraceAbstraction took 524.39ms. Allocated memory was 142.6MB in the beginning and 180.4MB in the end (delta: 37.7MB). Free memory was 66.2MB in the beginning and 143.6MB in the end (delta: -77.4MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. [2023-12-02 13:11:40,180 INFO L158 Benchmark]: Witness Printer took 4.50ms. Allocated memory is still 180.4MB. Free memory is still 143.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 13:11:40,183 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 142.6MB. Free memory is still 109.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 267.51ms. Allocated memory is still 142.6MB. Free memory was 103.0MB in the beginning and 90.9MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.26ms. Allocated memory is still 142.6MB. Free memory was 90.9MB in the beginning and 89.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 26.70ms. Allocated memory is still 142.6MB. Free memory was 89.3MB in the beginning and 87.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 444.12ms. Allocated memory is still 142.6MB. Free memory was 87.4MB in the beginning and 66.5MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 524.39ms. Allocated memory was 142.6MB in the beginning and 180.4MB in the end (delta: 37.7MB). Free memory was 66.2MB in the beginning and 143.6MB in the end (delta: -77.4MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. * Witness Printer took 4.50ms. Allocated memory is still 180.4MB. Free memory is still 143.6MB. 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 someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryDOUBLEComparisonOperation at line 45, overapproximation of someBinaryArithmeticDOUBLEoperation at line 46. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed char var_1_1 = -16; [L23] unsigned char var_1_2 = 1; [L24] signed char var_1_3 = 0; [L25] signed char var_1_4 = 64; [L26] signed char var_1_5 = 64; [L27] unsigned short int var_1_6 = 25; [L28] float var_1_7 = 256.4; [L29] double var_1_10 = 9999999999.515; [L30] float var_1_11 = 8.5; [L31] float var_1_12 = 2.5; [L32] double var_1_13 = 15.8; [L33] double var_1_14 = 25.8; [L94] isInitial = 1 [L95] FCALL initially() [L96] COND TRUE 1 [L97] FCALL updateLastVariables() [L98] CALL updateVariables() [L64] var_1_2 = __VERIFIER_nondet_uchar() [L65] CALL assume_abort_if_not(var_1_2 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_3=0, var_1_4=64, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L20] COND FALSE !(!cond) [L65] RET assume_abort_if_not(var_1_2 >= 0) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_3=0, var_1_4=64, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L66] CALL assume_abort_if_not(var_1_2 <= 1) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=0, var_1_4=64, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L20] COND FALSE !(!cond) [L66] RET assume_abort_if_not(var_1_2 <= 1) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=0, var_1_4=64, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L67] var_1_3 = __VERIFIER_nondet_char() [L68] CALL assume_abort_if_not(var_1_3 >= -63) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=63, var_1_4=64, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L20] COND FALSE !(!cond) [L68] RET assume_abort_if_not(var_1_3 >= -63) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=63, var_1_4=64, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L69] CALL assume_abort_if_not(var_1_3 <= 63) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=63, var_1_4=64, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L20] COND FALSE !(!cond) [L69] RET assume_abort_if_not(var_1_3 <= 63) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=63, var_1_4=64, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L70] var_1_4 = __VERIFIER_nondet_char() [L71] CALL assume_abort_if_not(var_1_4 >= -1) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=63, var_1_4=0, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not(var_1_4 >= -1) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=63, var_1_4=0, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L72] CALL assume_abort_if_not(var_1_4 <= 126) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=63, var_1_4=0, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L20] COND FALSE !(!cond) [L72] RET assume_abort_if_not(var_1_4 <= 126) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=63, var_1_4=0, var_1_5=64, var_1_6=25, var_1_7=1282/5] [L73] var_1_5 = __VERIFIER_nondet_char() [L74] CALL assume_abort_if_not(var_1_5 >= 0) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=63, var_1_4=0, var_1_5=16, var_1_6=25, var_1_7=1282/5] [L20] COND FALSE !(!cond) [L74] RET assume_abort_if_not(var_1_5 >= 0) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=63, var_1_4=0, var_1_5=16, var_1_6=25, var_1_7=1282/5] [L75] CALL assume_abort_if_not(var_1_5 <= 126) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=63, var_1_4=0, var_1_5=16, var_1_6=25, var_1_7=1282/5] [L20] COND FALSE !(!cond) [L75] RET assume_abort_if_not(var_1_5 <= 126) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=63, var_1_4=0, var_1_5=16, var_1_6=25, var_1_7=1282/5] [L76] var_1_7 = __VERIFIER_nondet_float() [L77] CALL assume_abort_if_not((var_1_7 >= 0.0F && var_1_7 <= -1.0e-20F) || (var_1_7 <= 9223372.036854776000e+12F && var_1_7 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=63, var_1_4=0, var_1_5=16, var_1_6=25] [L20] COND FALSE !(!cond) [L77] RET assume_abort_if_not((var_1_7 >= 0.0F && var_1_7 <= -1.0e-20F) || (var_1_7 <= 9223372.036854776000e+12F && var_1_7 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_11=17/2, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=63, var_1_4=0, var_1_5=16, var_1_6=25] [L78] var_1_11 = __VERIFIER_nondet_float() [L79] CALL assume_abort_if_not((var_1_11 >= 0.0F && var_1_11 <= -1.0e-20F) || (var_1_11 <= 9223372.036854776000e+12F && var_1_11 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=63, var_1_4=0, var_1_5=16, var_1_6=25] [L20] COND FALSE !(!cond) [L79] RET assume_abort_if_not((var_1_11 >= 0.0F && var_1_11 <= -1.0e-20F) || (var_1_11 <= 9223372.036854776000e+12F && var_1_11 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_12=5/2, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=63, var_1_4=0, var_1_5=16, var_1_6=25] [L80] var_1_12 = __VERIFIER_nondet_float() [L81] CALL assume_abort_if_not((var_1_12 >= 0.0F && var_1_12 <= -1.0e-20F) || (var_1_12 <= 9223372.036854776000e+12F && var_1_12 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=63, var_1_4=0, var_1_5=16, var_1_6=25] [L20] COND FALSE !(!cond) [L81] RET assume_abort_if_not((var_1_12 >= 0.0F && var_1_12 <= -1.0e-20F) || (var_1_12 <= 9223372.036854776000e+12F && var_1_12 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_13=79/5, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=63, var_1_4=0, var_1_5=16, var_1_6=25] [L82] var_1_13 = __VERIFIER_nondet_double() [L83] CALL assume_abort_if_not((var_1_13 >= 0.0F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 9223372.036854765600e+12F && var_1_13 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=63, var_1_4=0, var_1_5=16, var_1_6=25] [L20] COND FALSE !(!cond) [L83] RET assume_abort_if_not((var_1_13 >= 0.0F && var_1_13 <= -1.0e-20F) || (var_1_13 <= 9223372.036854765600e+12F && var_1_13 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_14=129/5, var_1_1=-16, var_1_2=1, var_1_3=63, var_1_4=0, var_1_5=16, var_1_6=25] [L84] var_1_14 = __VERIFIER_nondet_double() [L85] CALL assume_abort_if_not((var_1_14 >= 0.0F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 9223372.036854765600e+12F && var_1_14 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=1999999999903/200, var_1_1=-16, var_1_2=1, var_1_3=63, var_1_4=0, var_1_5=16, var_1_6=25] [L20] COND FALSE !(!cond) [L85] RET assume_abort_if_not((var_1_14 >= 0.0F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 9223372.036854765600e+12F && var_1_14 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=1999999999903/200, var_1_1=-16, var_1_2=1, var_1_3=63, var_1_4=0, var_1_5=16, var_1_6=25] [L98] RET updateVariables() [L99] CALL step() [L37] COND FALSE !(! var_1_2) [L44] COND TRUE var_1_7 < (var_1_11 - var_1_12) [L45] COND TRUE (var_1_7 / 7.2) <= var_1_11 [L46] var_1_10 = (var_1_13 - var_1_14) [L53] COND TRUE \read(var_1_2) [L54] COND FALSE !((var_1_7 - ((((var_1_10) < 0 ) ? -(var_1_10) : (var_1_10)))) <= var_1_10) [L57] var_1_6 = var_1_5 [L99] RET step() [L100] CALL, EXPR property() [L90-L91] return (((! var_1_2) ? ((! var_1_2) ? (var_1_1 == ((signed char) (var_1_3 + -32))) : (var_1_1 == ((signed char) (var_1_4 - var_1_5)))) : 1) && (var_1_2 ? (((var_1_7 - ((((var_1_10) < 0 ) ? -(var_1_10) : (var_1_10)))) <= var_1_10) ? (var_1_6 == ((unsigned short int) ((((256) < 0 ) ? -(256) : (256))))) : (var_1_6 == ((unsigned short int) var_1_5))) : (var_1_6 == ((unsigned short int) 16)))) && ((var_1_7 < (var_1_11 - var_1_12)) ? (((var_1_7 / 7.2) <= var_1_11) ? (var_1_10 == ((double) (var_1_13 - var_1_14))) : (var_1_10 == ((double) var_1_13))) : (var_1_10 == ((double) var_1_14))) ; [L100] RET, EXPR property() [L100] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=10000000004, var_1_13=10000000004, var_1_14=10000000004, var_1_1=-16, var_1_2=1, var_1_3=63, var_1_4=0, var_1_5=16, var_1_6=16] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=10000000004, var_1_13=10000000004, var_1_14=10000000004, var_1_1=-16, var_1_2=1, var_1_3=63, var_1_4=0, var_1_5=16, var_1_6=16] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 13, 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=31occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 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 [2023-12-02 13:11:40,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-79.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh --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 e506e1f7b38bbd8fe6b4b58e9d148d1ba7590120c1d7e1a0e5beae3abdd695ad --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:11:42,109 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:11:42,185 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 13:11:42,191 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:11:42,192 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:11:42,217 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:11:42,218 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:11:42,218 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:11:42,219 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:11:42,220 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:11:42,220 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:11:42,221 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:11:42,221 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:11:42,222 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:11:42,222 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:11:42,223 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:11:42,224 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:11:42,224 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:11:42,225 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:11:42,225 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:11:42,226 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:11:42,226 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:11:42,227 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:11:42,227 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:11:42,228 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 13:11:42,228 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 13:11:42,228 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 13:11:42,229 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:11:42,229 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:11:42,230 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:11:42,230 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:11:42,230 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 13:11:42,231 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:11:42,231 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:11:42,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:11:42,231 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:11:42,232 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:11:42,232 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:11:42,232 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 13:11:42,232 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 13:11:42,233 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:11:42,233 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:11:42,233 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:11:42,233 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:11:42,234 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_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e506e1f7b38bbd8fe6b4b58e9d148d1ba7590120c1d7e1a0e5beae3abdd695ad [2023-12-02 13:11:42,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:11:42,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:11:42,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:11:42,545 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:11:42,545 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:11:42,546 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-79.i [2023-12-02 13:11:45,335 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:11:45,544 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:11:45,545 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-79.i [2023-12-02 13:11:45,552 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/data/90fb0c2f3/ad7b602a88814c0f9c8460076d2bdef3/FLAG1f780ebe8 [2023-12-02 13:11:45,565 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/data/90fb0c2f3/ad7b602a88814c0f9c8460076d2bdef3 [2023-12-02 13:11:45,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:11:45,569 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:11:45,571 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:11:45,571 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:11:45,575 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:11:45,576 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:11:45" (1/1) ... [2023-12-02 13:11:45,577 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d04e554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:45, skipping insertion in model container [2023-12-02 13:11:45,577 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:11:45" (1/1) ... [2023-12-02 13:11:45,601 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:11:45,729 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_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-79.i[915,928] [2023-12-02 13:11:45,775 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:11:45,794 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:11:45,807 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_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-79.i[915,928] [2023-12-02 13:11:45,830 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:11:45,848 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:11:45,849 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:45 WrapperNode [2023-12-02 13:11:45,849 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:11:45,850 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:11:45,850 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:11:45,850 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:11:45,857 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:45" (1/1) ... [2023-12-02 13:11:45,870 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:45" (1/1) ... [2023-12-02 13:11:45,900 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 100 [2023-12-02 13:11:45,901 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:11:45,902 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:11:45,902 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:11:45,902 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:11:45,911 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:45" (1/1) ... [2023-12-02 13:11:45,911 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:45" (1/1) ... [2023-12-02 13:11:45,917 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:45" (1/1) ... [2023-12-02 13:11:45,917 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:45" (1/1) ... [2023-12-02 13:11:45,929 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:45" (1/1) ... [2023-12-02 13:11:45,934 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:45" (1/1) ... [2023-12-02 13:11:45,937 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:45" (1/1) ... [2023-12-02 13:11:45,939 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:45" (1/1) ... [2023-12-02 13:11:45,944 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:11:45,946 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:11:45,946 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:11:45,946 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:11:45,947 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:45" (1/1) ... [2023-12-02 13:11:45,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:11:45,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:11:45,982 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:11:45,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:11:46,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:11:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 13:11:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 13:11:46,011 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 13:11:46,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:11:46,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:11:46,083 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:11:46,085 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:11:53,811 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:11:53,860 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:11:53,860 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 13:11:53,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:11:53 BoogieIcfgContainer [2023-12-02 13:11:53,861 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:11:53,863 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:11:53,864 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:11:53,866 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:11:53,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:11:45" (1/3) ... [2023-12-02 13:11:53,867 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e21aabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:11:53, skipping insertion in model container [2023-12-02 13:11:53,867 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:11:45" (2/3) ... [2023-12-02 13:11:53,868 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e21aabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:11:53, skipping insertion in model container [2023-12-02 13:11:53,868 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:11:53" (3/3) ... [2023-12-02 13:11:53,870 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-79.i [2023-12-02 13:11:53,883 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:11:53,883 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 13:11:53,925 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:11:53,931 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;@365a4337, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:11:53,931 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 13:11:53,934 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 25 states have (on average 1.44) internal successors, (36), 26 states have internal predecessors, (36), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 13:11:53,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 13:11:53,943 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:11:53,944 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:11:53,944 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:11:53,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:11:53,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1703742509, now seen corresponding path program 1 times [2023-12-02 13:11:53,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:11:53,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363566187] [2023-12-02 13:11:53,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:11:53,960 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 [2023-12-02 13:11:53,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:11:53,963 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 13:11:53,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 13:11:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:11:54,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 13:11:54,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:11:55,015 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-12-02 13:11:55,016 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:11:55,016 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:11:55,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363566187] [2023-12-02 13:11:55,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [363566187] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:11:55,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:11:55,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:11:55,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457396491] [2023-12-02 13:11:55,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:11:55,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 13:11:55,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:11:55,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 13:11:55,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 13:11:55,056 INFO L87 Difference]: Start difference. First operand has 41 states, 25 states have (on average 1.44) internal successors, (36), 26 states have internal predecessors, (36), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 13:11:58,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:11:58,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:11:58,254 INFO L93 Difference]: Finished difference Result 79 states and 135 transitions. [2023-12-02 13:11:58,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 13:11:58,538 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 82 [2023-12-02 13:11:58,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:11:58,543 INFO L225 Difference]: With dead ends: 79 [2023-12-02 13:11:58,543 INFO L226 Difference]: Without dead ends: 39 [2023-12-02 13:11:58,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 13:11:58,548 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:11:58,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2023-12-02 13:11:58,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-02 13:11:58,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-12-02 13:11:58,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 13:11:58,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 57 transitions. [2023-12-02 13:11:58,579 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 57 transitions. Word has length 82 [2023-12-02 13:11:58,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:11:58,579 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 57 transitions. [2023-12-02 13:11:58,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 13:11:58,580 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 57 transitions. [2023-12-02 13:11:58,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 13:11:58,583 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:11:58,583 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:11:58,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 13:11:58,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 13:11:58,784 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:11:58,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:11:58,785 INFO L85 PathProgramCache]: Analyzing trace with hash -2025109917, now seen corresponding path program 1 times [2023-12-02 13:11:58,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:11:58,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [447627858] [2023-12-02 13:11:58,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:11:58,786 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 [2023-12-02 13:11:58,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:11:58,787 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 13:11:58,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 13:11:59,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:11:59,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 13:11:59,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:11:59,835 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2023-12-02 13:11:59,836 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:11:59,836 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:11:59,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [447627858] [2023-12-02 13:11:59,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [447627858] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:11:59,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:11:59,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:11:59,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275590770] [2023-12-02 13:11:59,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:11:59,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:11:59,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:11:59,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:11:59,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:11:59,856 INFO L87 Difference]: Start difference. First operand 39 states and 57 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-02 13:12:02,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:12:04,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:12:07,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 13:12:07,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:12:07,015 INFO L93 Difference]: Finished difference Result 86 states and 125 transitions. [2023-12-02 13:12:07,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:12:07,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 82 [2023-12-02 13:12:07,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:12:07,290 INFO L225 Difference]: With dead ends: 86 [2023-12-02 13:12:07,290 INFO L226 Difference]: Without dead ends: 48 [2023-12-02 13:12:07,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:12:07,293 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 11 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:12:07,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 97 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 3 Unknown, 0 Unchecked, 7.1s Time] [2023-12-02 13:12:07,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-12-02 13:12:07,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2023-12-02 13:12:07,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 27 states have internal predecessors, (36), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 13:12:07,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 62 transitions. [2023-12-02 13:12:07,304 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 62 transitions. Word has length 82 [2023-12-02 13:12:07,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:12:07,305 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 62 transitions. [2023-12-02 13:12:07,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-12-02 13:12:07,306 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 62 transitions. [2023-12-02 13:12:07,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-02 13:12:07,307 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:12:07,308 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:12:07,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 13:12:07,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 13:12:07,509 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:12:07,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:12:07,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1636828383, now seen corresponding path program 1 times [2023-12-02 13:12:07,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:12:07,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935625135] [2023-12-02 13:12:07,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:12:07,510 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 [2023-12-02 13:12:07,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:12:07,511 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 13:12:07,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa06cb02-7a8e-4add-9bf5-c54764cb4fd0/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 13:12:08,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:12:08,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 13:12:08,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:12:54,108 WARN L293 SmtUtils]: Spent 14.74s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)