./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-73.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_0199f525-bdb4-43a0-b25b-1fd25e8cf218/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/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_0199f525-bdb4-43a0-b25b-1fd25e8cf218/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-73.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/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_0199f525-bdb4-43a0-b25b-1fd25e8cf218/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 2d76b174fceab1b4f0b7c723c11189a89dfae9fb8b439d670404c7bcb817a6a0 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 12:22:36,590 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 12:22:36,655 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 12:22:36,660 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 12:22:36,661 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 12:22:36,686 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 12:22:36,687 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 12:22:36,687 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 12:22:36,688 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 12:22:36,689 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 12:22:36,689 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 12:22:36,690 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 12:22:36,690 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 12:22:36,691 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 12:22:36,691 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 12:22:36,692 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 12:22:36,692 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 12:22:36,693 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 12:22:36,693 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 12:22:36,694 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 12:22:36,695 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 12:22:36,695 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 12:22:36,696 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 12:22:36,697 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 12:22:36,697 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 12:22:36,698 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 12:22:36,698 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 12:22:36,698 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 12:22:36,699 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 12:22:36,699 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 12:22:36,700 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 12:22:36,700 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 12:22:36,700 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 12:22:36,700 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 12:22:36,701 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 12:22:36,701 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 12:22:36,701 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 12:22:36,701 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:22:36,702 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 12:22:36,702 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 12:22:36,702 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 12:22:36,702 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 12:22:36,703 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 12:22:36,703 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 12:22:36,703 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 12:22:36,703 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 12:22:36,703 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 12:22:36,704 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_0199f525-bdb4-43a0-b25b-1fd25e8cf218/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d76b174fceab1b4f0b7c723c11189a89dfae9fb8b439d670404c7bcb817a6a0 [2023-12-02 12:22:36,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 12:22:36,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 12:22:36,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 12:22:36,936 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 12:22:36,936 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 12:22:36,937 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-73.i [2023-12-02 12:22:39,702 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 12:22:39,871 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 12:22:39,872 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-73.i [2023-12-02 12:22:39,879 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/bin/utaipan-verify-nQ1chXbOIh/data/272d832a3/49bdd5e7bdf043ffa6f1c2f956204212/FLAG0a651e219 [2023-12-02 12:22:39,892 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/bin/utaipan-verify-nQ1chXbOIh/data/272d832a3/49bdd5e7bdf043ffa6f1c2f956204212 [2023-12-02 12:22:39,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 12:22:39,895 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 12:22:39,896 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 12:22:39,896 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 12:22:39,901 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 12:22:39,901 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:22:39" (1/1) ... [2023-12-02 12:22:39,903 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@102cd524 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:39, skipping insertion in model container [2023-12-02 12:22:39,903 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:22:39" (1/1) ... [2023-12-02 12:22:39,926 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 12:22:40,048 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_0199f525-bdb4-43a0-b25b-1fd25e8cf218/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-73.i[915,928] [2023-12-02 12:22:40,086 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:22:40,098 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 12:22:40,108 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_0199f525-bdb4-43a0-b25b-1fd25e8cf218/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-73.i[915,928] [2023-12-02 12:22:40,129 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:22:40,146 INFO L206 MainTranslator]: Completed translation [2023-12-02 12:22:40,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:40 WrapperNode [2023-12-02 12:22:40,146 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 12:22:40,147 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 12:22:40,147 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 12:22:40,147 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 12:22:40,153 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:40" (1/1) ... [2023-12-02 12:22:40,162 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:40" (1/1) ... [2023-12-02 12:22:40,195 INFO L138 Inliner]: procedures = 26, calls = 22, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 86 [2023-12-02 12:22:40,196 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 12:22:40,196 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 12:22:40,196 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 12:22:40,197 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 12:22:40,208 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:40" (1/1) ... [2023-12-02 12:22:40,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:40" (1/1) ... [2023-12-02 12:22:40,211 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:40" (1/1) ... [2023-12-02 12:22:40,211 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:40" (1/1) ... [2023-12-02 12:22:40,218 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:40" (1/1) ... [2023-12-02 12:22:40,222 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:40" (1/1) ... [2023-12-02 12:22:40,224 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:40" (1/1) ... [2023-12-02 12:22:40,226 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:40" (1/1) ... [2023-12-02 12:22:40,230 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 12:22:40,231 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 12:22:40,231 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 12:22:40,231 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 12:22:40,232 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:40" (1/1) ... [2023-12-02 12:22:40,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:22:40,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:22:40,266 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 12:22:40,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 12:22:40,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 12:22:40,302 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 12:22:40,302 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 12:22:40,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 12:22:40,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 12:22:40,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 12:22:40,370 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 12:22:40,372 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 12:22:40,585 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 12:22:40,703 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 12:22:40,703 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 12:22:40,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:22:40 BoogieIcfgContainer [2023-12-02 12:22:40,705 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 12:22:40,709 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 12:22:40,709 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 12:22:40,712 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 12:22:40,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:22:39" (1/3) ... [2023-12-02 12:22:40,714 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a913fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:22:40, skipping insertion in model container [2023-12-02 12:22:40,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:40" (2/3) ... [2023-12-02 12:22:40,714 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a913fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:22:40, skipping insertion in model container [2023-12-02 12:22:40,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:22:40" (3/3) ... [2023-12-02 12:22:40,716 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-73.i [2023-12-02 12:22:40,735 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 12:22:40,735 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 12:22:40,792 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 12:22:40,798 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;@1d47e0d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 12:22:40,798 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 12:22:40,801 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 12:22:40,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-02 12:22:40,808 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:22:40,809 INFO L195 NwaCegarLoop]: trace histogram [9, 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 12:22:40,809 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:22:40,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:22:40,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1054595333, now seen corresponding path program 1 times [2023-12-02 12:22:40,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:22:40,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11738037] [2023-12-02 12:22:40,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:22:40,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:22:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 12:22:41,048 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 12:22:41,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 12:22:41,168 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 12:22:41,170 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 12:22:41,171 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 12:22:41,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 12:22:41,178 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 12:22:41,183 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 12:22:41,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:22:41 BoogieIcfgContainer [2023-12-02 12:22:41,224 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 12:22:41,225 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 12:22:41,225 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 12:22:41,226 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 12:22:41,226 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:22:40" (3/4) ... [2023-12-02 12:22:41,228 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 12:22:41,229 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 12:22:41,231 INFO L158 Benchmark]: Toolchain (without parser) took 1335.44ms. Allocated memory was 165.7MB in the beginning and 211.8MB in the end (delta: 46.1MB). Free memory was 117.2MB in the beginning and 159.5MB in the end (delta: -42.3MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2023-12-02 12:22:41,231 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 102.8MB. Free memory is still 50.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 12:22:41,232 INFO L158 Benchmark]: CACSL2BoogieTranslator took 250.08ms. Allocated memory is still 165.7MB. Free memory was 117.2MB in the beginning and 105.1MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 12:22:41,233 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.72ms. Allocated memory is still 165.7MB. Free memory was 105.1MB in the beginning and 102.5MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 12:22:41,233 INFO L158 Benchmark]: Boogie Preprocessor took 33.74ms. Allocated memory is still 165.7MB. Free memory was 102.5MB in the beginning and 100.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 12:22:41,234 INFO L158 Benchmark]: RCFGBuilder took 474.40ms. Allocated memory is still 165.7MB. Free memory was 100.9MB in the beginning and 77.9MB in the end (delta: 23.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-12-02 12:22:41,235 INFO L158 Benchmark]: TraceAbstraction took 515.92ms. Allocated memory was 165.7MB in the beginning and 211.8MB in the end (delta: 46.1MB). Free memory was 76.9MB in the beginning and 160.5MB in the end (delta: -83.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 12:22:41,235 INFO L158 Benchmark]: Witness Printer took 4.40ms. Allocated memory is still 211.8MB. Free memory is still 159.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 12:22:41,238 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 102.8MB. Free memory is still 50.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 250.08ms. Allocated memory is still 165.7MB. Free memory was 117.2MB in the beginning and 105.1MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.72ms. Allocated memory is still 165.7MB. Free memory was 105.1MB in the beginning and 102.5MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.74ms. Allocated memory is still 165.7MB. Free memory was 102.5MB in the beginning and 100.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 474.40ms. Allocated memory is still 165.7MB. Free memory was 100.9MB in the beginning and 77.9MB in the end (delta: 23.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 515.92ms. Allocated memory was 165.7MB in the beginning and 211.8MB in the end (delta: 46.1MB). Free memory was 76.9MB in the beginning and 160.5MB in the end (delta: -83.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.40ms. Allocated memory is still 211.8MB. Free memory is still 159.5MB. 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 48, overapproximation of someUnaryDOUBLEoperation at line 24. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] double var_1_1 = 5.5; [L23] unsigned char var_1_6 = 1; [L24] double var_1_7 = -0.41; [L25] unsigned char var_1_8 = 25; [L26] unsigned char var_1_9 = 100; [L27] unsigned char var_1_10 = 1; [L28] unsigned char var_1_12 = 10; [L29] signed short int var_1_13 = -64; [L30] signed long int var_1_14 = 10; [L31] signed short int var_1_15 = -1; [L32] unsigned char last_1_var_1_8 = 25; [L33] signed long int last_1_var_1_14 = 10; [L85] isInitial = 1 [L86] FCALL initially() [L87] COND TRUE 1 [L88] CALL updateLastVariables() [L77] last_1_var_1_8 = var_1_8 [L78] last_1_var_1_14 = var_1_14 [L88] RET updateLastVariables() [L89] CALL updateVariables() [L61] var_1_6 = __VERIFIER_nondet_uchar() [L62] CALL assume_abort_if_not(var_1_6 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=10, last_1_var_1_8=25, var_1_10=1, var_1_12=10, var_1_13=-64, var_1_14=10, var_1_15=-1, var_1_1=11/2, var_1_8=25, var_1_9=100] [L20] COND FALSE !(!cond) [L62] RET assume_abort_if_not(var_1_6 >= 0) VAL [isInitial=1, last_1_var_1_14=10, last_1_var_1_8=25, var_1_10=1, var_1_12=10, var_1_13=-64, var_1_14=10, var_1_15=-1, var_1_1=11/2, var_1_8=25, var_1_9=100] [L63] CALL assume_abort_if_not(var_1_6 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=10, last_1_var_1_8=25, var_1_10=1, var_1_12=10, var_1_13=-64, var_1_14=10, var_1_15=-1, var_1_1=11/2, var_1_6=0, var_1_8=25, var_1_9=100] [L20] COND FALSE !(!cond) [L63] RET assume_abort_if_not(var_1_6 <= 1) VAL [isInitial=1, last_1_var_1_14=10, last_1_var_1_8=25, var_1_10=1, var_1_12=10, var_1_13=-64, var_1_14=10, var_1_15=-1, var_1_1=11/2, var_1_6=0, var_1_8=25, var_1_9=100] [L64] var_1_7 = __VERIFIER_nondet_double() [L65] CALL assume_abort_if_not((var_1_7 >= -922337.2036854765600e+13F && var_1_7 <= -1.0e-20F) || (var_1_7 <= 9223372.036854765600e+12F && var_1_7 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=10, last_1_var_1_8=25, var_1_10=1, var_1_12=10, var_1_13=-64, var_1_14=10, var_1_15=-1, var_1_1=11/2, var_1_6=0, var_1_8=25, var_1_9=100] [L20] COND FALSE !(!cond) [L65] RET assume_abort_if_not((var_1_7 >= -922337.2036854765600e+13F && var_1_7 <= -1.0e-20F) || (var_1_7 <= 9223372.036854765600e+12F && var_1_7 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_14=10, last_1_var_1_8=25, var_1_10=1, var_1_12=10, var_1_13=-64, var_1_14=10, var_1_15=-1, var_1_1=11/2, var_1_6=0, var_1_8=25, var_1_9=100] [L66] var_1_9 = __VERIFIER_nondet_uchar() [L67] CALL assume_abort_if_not(var_1_9 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=10, last_1_var_1_8=25, var_1_10=1, var_1_12=10, var_1_13=-64, var_1_14=10, var_1_15=-1, var_1_1=11/2, var_1_6=0, var_1_8=25] [L20] COND FALSE !(!cond) [L67] RET assume_abort_if_not(var_1_9 >= 0) VAL [isInitial=1, last_1_var_1_14=10, last_1_var_1_8=25, var_1_10=1, var_1_12=10, var_1_13=-64, var_1_14=10, var_1_15=-1, var_1_1=11/2, var_1_6=0, var_1_8=25] [L68] CALL assume_abort_if_not(var_1_9 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=10, last_1_var_1_8=25, var_1_10=1, var_1_12=10, var_1_13=-64, var_1_14=10, var_1_15=-1, var_1_1=11/2, var_1_6=0, var_1_8=25, var_1_9=0] [L20] COND FALSE !(!cond) [L68] RET assume_abort_if_not(var_1_9 <= 254) VAL [isInitial=1, last_1_var_1_14=10, last_1_var_1_8=25, var_1_10=1, var_1_12=10, var_1_13=-64, var_1_14=10, var_1_15=-1, var_1_1=11/2, var_1_6=0, var_1_8=25, var_1_9=0] [L69] var_1_10 = __VERIFIER_nondet_uchar() [L70] CALL assume_abort_if_not(var_1_10 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=10, last_1_var_1_8=25, var_1_12=10, var_1_13=-64, var_1_14=10, var_1_15=-1, var_1_1=11/2, var_1_6=0, var_1_8=25, var_1_9=0] [L20] COND FALSE !(!cond) [L70] RET assume_abort_if_not(var_1_10 >= 0) VAL [isInitial=1, last_1_var_1_14=10, last_1_var_1_8=25, var_1_12=10, var_1_13=-64, var_1_14=10, var_1_15=-1, var_1_1=11/2, var_1_6=0, var_1_8=25, var_1_9=0] [L71] CALL assume_abort_if_not(var_1_10 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=10, last_1_var_1_8=25, var_1_10=0, var_1_12=10, var_1_13=-64, var_1_14=10, var_1_15=-1, var_1_1=11/2, var_1_6=0, var_1_8=25, var_1_9=0] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not(var_1_10 <= 254) VAL [isInitial=1, last_1_var_1_14=10, last_1_var_1_8=25, var_1_10=0, var_1_12=10, var_1_13=-64, var_1_14=10, var_1_15=-1, var_1_1=11/2, var_1_6=0, var_1_8=25, var_1_9=0] [L72] var_1_12 = __VERIFIER_nondet_uchar() [L73] CALL assume_abort_if_not(var_1_12 >= 0) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=10, last_1_var_1_8=25, var_1_10=0, var_1_13=-64, var_1_14=10, var_1_15=-1, var_1_1=11/2, var_1_6=0, var_1_8=25, var_1_9=0] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not(var_1_12 >= 0) VAL [isInitial=1, last_1_var_1_14=10, last_1_var_1_8=25, var_1_10=0, var_1_13=-64, var_1_14=10, var_1_15=-1, var_1_1=11/2, var_1_6=0, var_1_8=25, var_1_9=0] [L74] CALL assume_abort_if_not(var_1_12 <= 254) VAL [\old(cond)=1, isInitial=1, last_1_var_1_14=10, last_1_var_1_8=25, var_1_10=0, var_1_12=254, var_1_13=-64, var_1_14=10, var_1_15=-1, var_1_1=11/2, var_1_6=0, var_1_8=25, var_1_9=0] [L20] COND FALSE !(!cond) [L74] RET assume_abort_if_not(var_1_12 <= 254) VAL [isInitial=1, last_1_var_1_14=10, last_1_var_1_8=25, var_1_10=0, var_1_12=254, var_1_13=-64, var_1_14=10, var_1_15=-1, var_1_1=11/2, var_1_6=0, var_1_8=25, var_1_9=0] [L89] RET updateVariables() [L90] CALL step() [L37] signed long int stepLocal_0 = (((last_1_var_1_8) > ((last_1_var_1_14 + last_1_var_1_14))) ? (last_1_var_1_8) : ((last_1_var_1_14 + last_1_var_1_14))); [L38] COND TRUE last_1_var_1_14 <= stepLocal_0 [L39] COND TRUE ! var_1_6 [L40] var_1_1 = var_1_7 [L45] COND FALSE !(\read(var_1_6)) [L48] COND FALSE !(var_1_1 < (var_1_1 + var_1_7)) [L52] COND FALSE !((9.99999999999995E13f + var_1_1) >= var_1_1) [L55] var_1_13 = (((((var_1_9) < (8)) ? (var_1_9) : (8))) - 32) [L57] var_1_15 = var_1_12 [L58] var_1_14 = var_1_15 [L90] RET step() [L91] CALL, EXPR property() [L81-L82] return (((((last_1_var_1_14 <= ((((last_1_var_1_8) > ((last_1_var_1_14 + last_1_var_1_14))) ? (last_1_var_1_8) : ((last_1_var_1_14 + last_1_var_1_14))))) ? ((! var_1_6) ? (var_1_1 == ((double) var_1_7)) : (var_1_1 == ((double) var_1_7))) : 1) && (var_1_6 ? (var_1_8 == ((unsigned char) ((((var_1_9) > (var_1_10)) ? (var_1_9) : (var_1_10))))) : ((var_1_1 < (var_1_1 + var_1_7)) ? (var_1_8 == ((unsigned char) var_1_12)) : 1))) && (((9.99999999999995E13f + var_1_1) >= var_1_1) ? (var_1_13 == ((signed short int) (-4 + var_1_10))) : (var_1_13 == ((signed short int) (((((var_1_9) < (8)) ? (var_1_9) : (8))) - 32))))) && (var_1_14 == ((signed long int) var_1_15))) && (var_1_15 == ((signed short int) var_1_12)) ; [L91] RET, EXPR property() [L91] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_14=10, last_1_var_1_8=25, var_1_10=0, var_1_12=254, var_1_13=-32, var_1_14=254, var_1_15=254, var_1_1=11/2, var_1_6=0, var_1_7=11/2, var_1_8=25, var_1_9=0] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_14=10, last_1_var_1_8=25, var_1_10=0, var_1_12=254, var_1_13=-32, var_1_14=254, var_1_15=254, var_1_1=11/2, var_1_6=0, var_1_7=11/2, var_1_8=25, var_1_9=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 9, 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=23occurred 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, 36 NumberOfCodeBlocks, 36 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 12:22:41,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/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_0199f525-bdb4-43a0-b25b-1fd25e8cf218/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-73.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/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_0199f525-bdb4-43a0-b25b-1fd25e8cf218/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 2d76b174fceab1b4f0b7c723c11189a89dfae9fb8b439d670404c7bcb817a6a0 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 12:22:43,241 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 12:22:43,308 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 12:22:43,313 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 12:22:43,314 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 12:22:43,341 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 12:22:43,341 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 12:22:43,342 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 12:22:43,342 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 12:22:43,343 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 12:22:43,343 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 12:22:43,344 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 12:22:43,344 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 12:22:43,345 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 12:22:43,345 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 12:22:43,346 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 12:22:43,347 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 12:22:43,347 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 12:22:43,348 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 12:22:43,349 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 12:22:43,349 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 12:22:43,350 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 12:22:43,350 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 12:22:43,351 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 12:22:43,351 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 12:22:43,351 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 12:22:43,352 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 12:22:43,352 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 12:22:43,352 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 12:22:43,353 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 12:22:43,353 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 12:22:43,353 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 12:22:43,354 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 12:22:43,354 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 12:22:43,354 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:22:43,354 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 12:22:43,354 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 12:22:43,355 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 12:22:43,355 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 12:22:43,355 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 12:22:43,355 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 12:22:43,355 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 12:22:43,356 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 12:22:43,356 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 12:22:43,356 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_0199f525-bdb4-43a0-b25b-1fd25e8cf218/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d76b174fceab1b4f0b7c723c11189a89dfae9fb8b439d670404c7bcb817a6a0 [2023-12-02 12:22:43,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 12:22:43,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 12:22:43,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 12:22:43,681 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 12:22:43,682 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 12:22:43,683 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-73.i [2023-12-02 12:22:46,519 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 12:22:46,720 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 12:22:46,721 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-73.i [2023-12-02 12:22:46,731 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/bin/utaipan-verify-nQ1chXbOIh/data/9385ba029/d01043e909f8424380e41e4e759e3f56/FLAGdf00bd337 [2023-12-02 12:22:46,746 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/bin/utaipan-verify-nQ1chXbOIh/data/9385ba029/d01043e909f8424380e41e4e759e3f56 [2023-12-02 12:22:46,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 12:22:46,751 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 12:22:46,752 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 12:22:46,752 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 12:22:46,757 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 12:22:46,758 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:22:46" (1/1) ... [2023-12-02 12:22:46,760 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6494a6a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:46, skipping insertion in model container [2023-12-02 12:22:46,760 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:22:46" (1/1) ... [2023-12-02 12:22:46,787 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 12:22:46,942 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_0199f525-bdb4-43a0-b25b-1fd25e8cf218/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-73.i[915,928] [2023-12-02 12:22:46,982 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:22:46,998 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 12:22:47,012 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_0199f525-bdb4-43a0-b25b-1fd25e8cf218/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount25_file-73.i[915,928] [2023-12-02 12:22:47,030 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:22:47,049 INFO L206 MainTranslator]: Completed translation [2023-12-02 12:22:47,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:47 WrapperNode [2023-12-02 12:22:47,050 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 12:22:47,051 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 12:22:47,051 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 12:22:47,051 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 12:22:47,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:47" (1/1) ... [2023-12-02 12:22:47,071 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:47" (1/1) ... [2023-12-02 12:22:47,096 INFO L138 Inliner]: procedures = 27, calls = 22, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 86 [2023-12-02 12:22:47,097 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 12:22:47,097 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 12:22:47,098 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 12:22:47,098 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 12:22:47,108 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:47" (1/1) ... [2023-12-02 12:22:47,108 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:47" (1/1) ... [2023-12-02 12:22:47,112 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:47" (1/1) ... [2023-12-02 12:22:47,112 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:47" (1/1) ... [2023-12-02 12:22:47,120 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:47" (1/1) ... [2023-12-02 12:22:47,124 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:47" (1/1) ... [2023-12-02 12:22:47,126 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:47" (1/1) ... [2023-12-02 12:22:47,129 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:47" (1/1) ... [2023-12-02 12:22:47,133 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 12:22:47,134 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 12:22:47,134 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 12:22:47,134 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 12:22:47,135 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:47" (1/1) ... [2023-12-02 12:22:47,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:22:47,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:22:47,165 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 12:22:47,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 12:22:47,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 12:22:47,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 12:22:47,200 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 12:22:47,201 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 12:22:47,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 12:22:47,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 12:22:47,287 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 12:22:47,289 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 12:22:49,036 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 12:22:49,096 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 12:22:49,096 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 12:22:49,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:22:49 BoogieIcfgContainer [2023-12-02 12:22:49,097 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 12:22:49,100 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 12:22:49,100 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 12:22:49,103 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 12:22:49,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:22:46" (1/3) ... [2023-12-02 12:22:49,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bdd6d49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:22:49, skipping insertion in model container [2023-12-02 12:22:49,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:22:47" (2/3) ... [2023-12-02 12:22:49,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bdd6d49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:22:49, skipping insertion in model container [2023-12-02 12:22:49,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:22:49" (3/3) ... [2023-12-02 12:22:49,107 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-73.i [2023-12-02 12:22:49,126 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 12:22:49,126 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 12:22:49,175 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 12:22:49,181 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;@58b356a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 12:22:49,182 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 12:22:49,185 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 12:22:49,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 12:22:49,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:22:49,196 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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 12:22:49,196 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:22:49,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:22:49,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1008975170, now seen corresponding path program 1 times [2023-12-02 12:22:49,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:22:49,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29626327] [2023-12-02 12:22:49,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:22:49,217 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 12:22:49,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:22:49,219 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/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 12:22:49,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/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 12:22:49,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:22:49,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 12:22:49,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:22:49,506 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-12-02 12:22:49,507 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:22:49,507 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:22:49,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29626327] [2023-12-02 12:22:49,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29626327] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:22:49,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:22:49,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:22:49,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051810893] [2023-12-02 12:22:49,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:22:49,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 12:22:49,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:22:49,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 12:22:49,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 12:22:49,545 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 12:22:50,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:22:50,177 INFO L93 Difference]: Finished difference Result 61 states and 103 transitions. [2023-12-02 12:22:50,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 12:22:50,192 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 58 [2023-12-02 12:22:50,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:22:50,197 INFO L225 Difference]: With dead ends: 61 [2023-12-02 12:22:50,197 INFO L226 Difference]: Without dead ends: 30 [2023-12-02 12:22:50,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 57 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 12:22:50,203 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 12:22:50,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 12:22:50,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-12-02 12:22:50,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-12-02 12:22:50,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 12:22:50,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2023-12-02 12:22:50,244 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 58 [2023-12-02 12:22:50,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:22:50,244 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2023-12-02 12:22:50,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 12:22:50,245 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2023-12-02 12:22:50,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 12:22:50,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:22:50,248 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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 12:22:50,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/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 12:22:50,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/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 12:22:50,452 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:22:50,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:22:50,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1299726272, now seen corresponding path program 1 times [2023-12-02 12:22:50,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:22:50,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1946994342] [2023-12-02 12:22:50,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:22:50,454 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 12:22:50,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:22:50,455 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/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 12:22:50,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/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 12:22:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:22:50,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 12:22:50,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:22:51,234 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-02 12:22:51,234 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:22:51,235 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:22:51,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1946994342] [2023-12-02 12:22:51,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1946994342] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:22:51,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:22:51,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 12:22:51,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691083558] [2023-12-02 12:22:51,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:22:51,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 12:22:51,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:22:51,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 12:22:51,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:22:51,239 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-02 12:22:52,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:22:52,953 INFO L93 Difference]: Finished difference Result 91 states and 131 transitions. [2023-12-02 12:22:52,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 12:22:52,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 58 [2023-12-02 12:22:52,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:22:52,968 INFO L225 Difference]: With dead ends: 91 [2023-12-02 12:22:52,968 INFO L226 Difference]: Without dead ends: 62 [2023-12-02 12:22:52,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 12:22:52,971 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 40 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-12-02 12:22:52,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 134 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-02 12:22:52,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-12-02 12:22:52,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 50. [2023-12-02 12:22:52,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 12:22:52,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 71 transitions. [2023-12-02 12:22:52,991 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 71 transitions. Word has length 58 [2023-12-02 12:22:52,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:22:52,992 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 71 transitions. [2023-12-02 12:22:52,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-02 12:22:52,993 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 71 transitions. [2023-12-02 12:22:52,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-02 12:22:52,995 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:22:52,995 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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 12:22:53,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/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 12:22:53,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/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 12:22:53,200 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:22:53,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:22:53,201 INFO L85 PathProgramCache]: Analyzing trace with hash -416378588, now seen corresponding path program 1 times [2023-12-02 12:22:53,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:22:53,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477723387] [2023-12-02 12:22:53,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:22:53,201 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 12:22:53,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:22:53,203 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/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 12:22:53,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/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 12:22:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:22:53,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 12:22:53,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:22:53,452 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-12-02 12:22:53,453 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:22:53,453 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:22:53,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477723387] [2023-12-02 12:22:53,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [477723387] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:22:53,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:22:53,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:22:53,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653869531] [2023-12-02 12:22:53,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:22:53,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:22:53,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:22:53,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:22:53,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:22:53,456 INFO L87 Difference]: Start difference. First operand 50 states and 71 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-02 12:22:54,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:22:54,407 INFO L93 Difference]: Finished difference Result 87 states and 123 transitions. [2023-12-02 12:22:54,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:22:54,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 59 [2023-12-02 12:22:54,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:22:54,410 INFO L225 Difference]: With dead ends: 87 [2023-12-02 12:22:54,410 INFO L226 Difference]: Without dead ends: 58 [2023-12-02 12:22:54,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 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 12:22:54,411 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 10 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 12:22:54,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 77 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 12:22:54,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-12-02 12:22:54,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2023-12-02 12:22:54,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 18 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 12:22:54,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 72 transitions. [2023-12-02 12:22:54,425 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 72 transitions. Word has length 59 [2023-12-02 12:22:54,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:22:54,426 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 72 transitions. [2023-12-02 12:22:54,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2023-12-02 12:22:54,426 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 72 transitions. [2023-12-02 12:22:54,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-02 12:22:54,428 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:22:54,429 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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 12:22:54,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/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)] Ended with exit code 0 [2023-12-02 12:22:54,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/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 12:22:54,640 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:22:54,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:22:54,641 INFO L85 PathProgramCache]: Analyzing trace with hash -359120286, now seen corresponding path program 1 times [2023-12-02 12:22:54,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:22:54,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820507123] [2023-12-02 12:22:54,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:22:54,642 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 12:22:54,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:22:54,643 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/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 12:22:54,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0199f525-bdb4-43a0-b25b-1fd25e8cf218/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 (5)] Waiting until timeout for monitored process [2023-12-02 12:22:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:22:54,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 12:22:54,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:29:17,203 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 60 proven. 18 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-02 12:29:17,203 INFO L327 TraceCheckSpWp]: Computing backward predicates...