./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-42.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-42.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1b6679b66df394d112d70edcc29d7c1d17ec70623c6c663e910f39926affa591 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:14:20,332 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:14:20,438 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:14:20,444 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:14:20,444 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:14:20,487 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:14:20,488 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:14:20,489 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:14:20,490 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:14:20,495 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:14:20,496 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:14:20,496 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:14:20,496 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:14:20,498 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:14:20,499 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:14:20,499 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:14:20,500 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:14:20,500 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:14:20,500 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:14:20,501 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:14:20,501 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:14:20,502 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:14:20,503 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:14:20,503 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:14:20,503 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:14:20,504 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:14:20,504 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:14:20,504 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:14:20,505 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:14:20,505 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:14:20,506 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:14:20,507 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:14:20,507 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:14:20,507 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:14:20,507 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:14:20,508 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:14:20,508 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:14:20,508 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:14:20,508 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:14:20,509 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:14:20,509 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:14:20,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:14:20,509 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:14:20,509 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:14:20,510 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:14:20,510 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_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b6679b66df394d112d70edcc29d7c1d17ec70623c6c663e910f39926affa591 [2023-11-19 05:14:20,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:14:20,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:14:20,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:14:20,839 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:14:20,839 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:14:20,842 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-42.i [2023-11-19 05:14:23,982 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:14:24,226 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:14:24,227 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-42.i [2023-11-19 05:14:24,236 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/data/5727f6fb9/5733cbcf4ca6482c8f25ddc08936a9ab/FLAG6ca0c9320 [2023-11-19 05:14:24,254 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/data/5727f6fb9/5733cbcf4ca6482c8f25ddc08936a9ab [2023-11-19 05:14:24,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:14:24,259 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:14:24,261 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:14:24,262 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:14:24,270 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:14:24,271 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:14:24" (1/1) ... [2023-11-19 05:14:24,272 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a6d9474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:24, skipping insertion in model container [2023-11-19 05:14:24,273 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:14:24" (1/1) ... [2023-11-19 05:14:24,300 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:14:24,509 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_ce0edaa8-0213-4f91-b2f8-2e867f217298/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-42.i[915,928] [2023-11-19 05:14:24,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:14:24,545 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:14:24,558 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_ce0edaa8-0213-4f91-b2f8-2e867f217298/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-42.i[915,928] [2023-11-19 05:14:24,568 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:14:24,584 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:14:24,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:24 WrapperNode [2023-11-19 05:14:24,585 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:14:24,586 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:14:24,587 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:14:24,587 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:14:24,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:24" (1/1) ... [2023-11-19 05:14:24,604 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:24" (1/1) ... [2023-11-19 05:14:24,625 INFO L138 Inliner]: procedures = 26, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 56 [2023-11-19 05:14:24,625 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:14:24,626 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:14:24,626 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:14:24,627 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:14:24,636 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:24" (1/1) ... [2023-11-19 05:14:24,636 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:24" (1/1) ... [2023-11-19 05:14:24,638 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:24" (1/1) ... [2023-11-19 05:14:24,638 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:24" (1/1) ... [2023-11-19 05:14:24,643 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:24" (1/1) ... [2023-11-19 05:14:24,647 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:24" (1/1) ... [2023-11-19 05:14:24,648 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:24" (1/1) ... [2023-11-19 05:14:24,649 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:24" (1/1) ... [2023-11-19 05:14:24,651 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:14:24,653 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:14:24,653 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:14:24,653 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:14:24,654 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:24" (1/1) ... [2023-11-19 05:14:24,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:14:24,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:14:24,686 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:14:24,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:14:24,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:14:24,728 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:14:24,728 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:14:24,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:14:24,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:14:24,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:14:24,793 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:14:24,796 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:14:25,013 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:14:25,114 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:14:25,114 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:14:25,119 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:14:25 BoogieIcfgContainer [2023-11-19 05:14:25,119 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:14:25,123 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:14:25,123 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:14:25,128 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:14:25,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:14:24" (1/3) ... [2023-11-19 05:14:25,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6afbcb7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:14:25, skipping insertion in model container [2023-11-19 05:14:25,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:24" (2/3) ... [2023-11-19 05:14:25,130 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6afbcb7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:14:25, skipping insertion in model container [2023-11-19 05:14:25,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:14:25" (3/3) ... [2023-11-19 05:14:25,132 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-42.i [2023-11-19 05:14:25,156 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:14:25,157 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:14:25,205 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:14:25,212 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;@10543618, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:14:25,212 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:14:25,217 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:14:25,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 05:14:25,227 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:25,228 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:25,229 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:14:25,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:25,236 INFO L85 PathProgramCache]: Analyzing trace with hash -573501271, now seen corresponding path program 1 times [2023-11-19 05:14:25,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:14:25,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393359046] [2023-11-19 05:14:25,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:25,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:14:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:14:25,407 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:14:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:14:25,476 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 05:14:25,478 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:14:25,480 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 05:14:25,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:14:25,488 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 05:14:25,492 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:14:25,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:14:25 BoogieIcfgContainer [2023-11-19 05:14:25,528 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:14:25,531 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:14:25,531 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:14:25,531 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:14:25,532 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:14:25" (3/4) ... [2023-11-19 05:14:25,537 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 05:14:25,539 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:14:25,541 INFO L158 Benchmark]: Toolchain (without parser) took 1281.02ms. Allocated memory is still 151.0MB. Free memory was 110.6MB in the beginning and 84.2MB in the end (delta: 26.3MB). Peak memory consumption was 23.7MB. Max. memory is 16.1GB. [2023-11-19 05:14:25,541 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 119.5MB. Free memory is still 85.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:14:25,543 INFO L158 Benchmark]: CACSL2BoogieTranslator took 324.50ms. Allocated memory is still 151.0MB. Free memory was 110.6MB in the beginning and 117.3MB in the end (delta: -6.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 05:14:25,545 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.19ms. Allocated memory is still 151.0MB. Free memory was 117.3MB in the beginning and 115.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:14:25,546 INFO L158 Benchmark]: Boogie Preprocessor took 25.59ms. Allocated memory is still 151.0MB. Free memory was 115.7MB in the beginning and 114.8MB in the end (delta: 855.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:14:25,552 INFO L158 Benchmark]: RCFGBuilder took 467.02ms. Allocated memory is still 151.0MB. Free memory was 114.4MB in the beginning and 101.0MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 05:14:25,554 INFO L158 Benchmark]: TraceAbstraction took 405.31ms. Allocated memory is still 151.0MB. Free memory was 100.6MB in the beginning and 84.6MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 05:14:25,555 INFO L158 Benchmark]: Witness Printer took 8.50ms. Allocated memory is still 151.0MB. Free memory was 84.6MB in the beginning and 84.2MB in the end (delta: 405.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:14:25,564 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 119.5MB. Free memory is still 85.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 324.50ms. Allocated memory is still 151.0MB. Free memory was 110.6MB in the beginning and 117.3MB in the end (delta: -6.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.19ms. Allocated memory is still 151.0MB. Free memory was 117.3MB in the beginning and 115.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.59ms. Allocated memory is still 151.0MB. Free memory was 115.7MB in the beginning and 114.8MB in the end (delta: 855.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 467.02ms. Allocated memory is still 151.0MB. Free memory was 114.4MB in the beginning and 101.0MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 405.31ms. Allocated memory is still 151.0MB. Free memory was 100.6MB in the beginning and 84.6MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 8.50ms. Allocated memory is still 151.0MB. Free memory was 84.6MB in the beginning and 84.2MB in the end (delta: 405.3kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 34. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] signed long int var_1_1 = 5; [L23] signed char var_1_7 = 32; [L24] signed char var_1_8 = 16; [L25] signed char var_1_9 = 32; [L26] float var_1_10 = 127.725; [L27] float var_1_11 = 2.2; [L54] isInitial = 1 [L55] FCALL initially() [L56] COND TRUE 1 [L57] FCALL updateLastVariables() [L58] CALL updateVariables() [L41] var_1_8 = __VERIFIER_nondet_char() [L42] CALL assume_abort_if_not(var_1_8 >= -127) VAL [\old(cond)=1, isInitial=1, var_1_10=5109/40, var_1_11=11/5, var_1_1=5, var_1_7=32, var_1_8=126, var_1_9=32] [L20] COND FALSE !(!cond) [L42] RET assume_abort_if_not(var_1_8 >= -127) VAL [isInitial=1, var_1_10=5109/40, var_1_11=11/5, var_1_1=5, var_1_7=32, var_1_8=126, var_1_9=32] [L43] CALL assume_abort_if_not(var_1_8 <= 126) VAL [\old(cond)=1, isInitial=1, var_1_10=5109/40, var_1_11=11/5, var_1_1=5, var_1_7=32, var_1_8=126, var_1_9=32] [L20] COND FALSE !(!cond) [L43] RET assume_abort_if_not(var_1_8 <= 126) VAL [isInitial=1, var_1_10=5109/40, var_1_11=11/5, var_1_1=5, var_1_7=32, var_1_8=126, var_1_9=32] [L44] var_1_11 = __VERIFIER_nondet_float() [L45] CALL assume_abort_if_not((var_1_11 >= -922337.2036854765600e+13F && var_1_11 <= -1.0e-20F) || (var_1_11 <= 9223372.036854765600e+12F && var_1_11 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, var_1_10=5109/40, var_1_11=257, var_1_1=5, var_1_7=32, var_1_8=126, var_1_9=32] [L20] COND FALSE !(!cond) [L45] RET assume_abort_if_not((var_1_11 >= -922337.2036854765600e+13F && var_1_11 <= -1.0e-20F) || (var_1_11 <= 9223372.036854765600e+12F && var_1_11 >= 1.0e-20F )) VAL [isInitial=1, var_1_10=5109/40, var_1_11=257, var_1_1=5, var_1_7=32, var_1_8=126, var_1_9=32] [L58] RET updateVariables() [L59] CALL step() [L31] var_1_7 = var_1_8 [L32] var_1_9 = var_1_8 [L33] var_1_10 = var_1_11 [L34] COND TRUE (var_1_10 * var_1_10) > var_1_10 [L35] var_1_1 = (var_1_7 + var_1_7) [L59] RET step() [L60] CALL, EXPR property() [L50-L51] return (((((var_1_10 * var_1_10) > var_1_10) ? (var_1_1 == ((signed long int) (var_1_7 + var_1_7))) : (var_1_1 == ((signed long int) ((((var_1_7) > (5)) ? (var_1_7) : (5)))))) && (var_1_7 == ((signed char) var_1_8))) && (var_1_9 == ((signed char) var_1_8))) && (var_1_10 == ((float) var_1_11)) ; [L60] RET, EXPR property() [L60] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=257, var_1_11=257, var_1_1=252, var_1_7=126, var_1_8=126, var_1_9=126] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, var_1_10=257, var_1_11=257, var_1_1=252, var_1_7=126, var_1_8=126, var_1_9=126] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 3, 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=14occurred 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, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-19 05:14:25,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-42.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1b6679b66df394d112d70edcc29d7c1d17ec70623c6c663e910f39926affa591 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:14:28,403 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:14:28,493 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-19 05:14:28,498 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:14:28,499 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:14:28,528 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:14:28,529 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:14:28,529 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:14:28,530 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:14:28,531 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:14:28,532 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:14:28,532 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:14:28,533 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:14:28,534 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:14:28,534 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:14:28,535 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:14:28,536 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:14:28,536 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:14:28,537 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:14:28,537 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:14:28,538 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:14:28,539 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:14:28,539 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:14:28,539 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:14:28,540 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:14:28,540 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 05:14:28,541 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 05:14:28,541 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:14:28,542 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:14:28,542 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:14:28,543 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:14:28,543 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 05:14:28,544 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:14:28,544 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:14:28,545 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:14:28,545 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:14:28,546 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:14:28,546 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 05:14:28,547 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 05:14:28,547 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:14:28,548 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:14:28,549 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:14:28,550 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_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b6679b66df394d112d70edcc29d7c1d17ec70623c6c663e910f39926affa591 [2023-11-19 05:14:29,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:14:29,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:14:29,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:14:29,067 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:14:29,068 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:14:29,070 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-42.i [2023-11-19 05:14:32,535 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:14:32,805 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:14:32,806 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-42.i [2023-11-19 05:14:32,813 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/data/c43f58ec0/70e744c9bf05492984c09be0d98a1223/FLAG635fba4b8 [2023-11-19 05:14:32,829 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/data/c43f58ec0/70e744c9bf05492984c09be0d98a1223 [2023-11-19 05:14:32,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:14:32,833 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:14:32,834 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:14:32,834 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:14:32,840 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:14:32,841 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:14:32" (1/1) ... [2023-11-19 05:14:32,843 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@597be5e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:32, skipping insertion in model container [2023-11-19 05:14:32,843 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:14:32" (1/1) ... [2023-11-19 05:14:32,869 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:14:33,029 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_ce0edaa8-0213-4f91-b2f8-2e867f217298/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-42.i[915,928] [2023-11-19 05:14:33,052 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:14:33,066 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:14:33,079 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_ce0edaa8-0213-4f91-b2f8-2e867f217298/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount10_file-42.i[915,928] [2023-11-19 05:14:33,089 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:14:33,117 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:14:33,118 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:33 WrapperNode [2023-11-19 05:14:33,118 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:14:33,120 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:14:33,120 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:14:33,120 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:14:33,128 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:33" (1/1) ... [2023-11-19 05:14:33,157 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:33" (1/1) ... [2023-11-19 05:14:33,191 INFO L138 Inliner]: procedures = 27, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 55 [2023-11-19 05:14:33,191 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:14:33,192 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:14:33,192 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:14:33,192 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:14:33,202 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:33" (1/1) ... [2023-11-19 05:14:33,202 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:33" (1/1) ... [2023-11-19 05:14:33,212 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:33" (1/1) ... [2023-11-19 05:14:33,213 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:33" (1/1) ... [2023-11-19 05:14:33,234 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:33" (1/1) ... [2023-11-19 05:14:33,238 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:33" (1/1) ... [2023-11-19 05:14:33,241 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:33" (1/1) ... [2023-11-19 05:14:33,244 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:33" (1/1) ... [2023-11-19 05:14:33,251 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:14:33,257 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:14:33,258 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:14:33,258 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:14:33,259 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:33" (1/1) ... [2023-11-19 05:14:33,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:14:33,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:14:33,298 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:14:33,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:14:33,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:14:33,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 05:14:33,344 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 05:14:33,345 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 05:14:33,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:14:33,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:14:33,430 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:14:33,432 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:14:33,836 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:14:33,844 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:14:33,844 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 05:14:33,848 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:14:33 BoogieIcfgContainer [2023-11-19 05:14:33,848 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:14:33,851 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:14:33,851 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:14:33,854 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:14:33,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:14:32" (1/3) ... [2023-11-19 05:14:33,856 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6503b0f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:14:33, skipping insertion in model container [2023-11-19 05:14:33,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:14:33" (2/3) ... [2023-11-19 05:14:33,856 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6503b0f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:14:33, skipping insertion in model container [2023-11-19 05:14:33,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:14:33" (3/3) ... [2023-11-19 05:14:33,858 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount10_file-42.i [2023-11-19 05:14:33,875 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:14:33,875 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:14:33,921 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:14:33,928 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;@26f1ed19, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:14:33,928 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:14:33,933 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:14:33,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 05:14:33,942 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:33,943 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:33,943 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:14:33,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:33,950 INFO L85 PathProgramCache]: Analyzing trace with hash 25716770, now seen corresponding path program 1 times [2023-11-19 05:14:33,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:14:33,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301720146] [2023-11-19 05:14:33,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:33,967 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:14:33,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:14:33,975 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:14:33,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-19 05:14:34,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:34,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 05:14:34,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:14:34,292 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 05:14:34,292 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:14:34,293 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:14:34,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301720146] [2023-11-19 05:14:34,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301720146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:34,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:34,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:14:34,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389342568] [2023-11-19 05:14:34,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:34,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:14:34,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:14:34,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:14:34,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:14:34,345 INFO L87 Difference]: Start difference. First operand has 25 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 05:14:34,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:34,373 INFO L93 Difference]: Finished difference Result 43 states and 59 transitions. [2023-11-19 05:14:34,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:14:34,376 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2023-11-19 05:14:34,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:34,383 INFO L225 Difference]: With dead ends: 43 [2023-11-19 05:14:34,384 INFO L226 Difference]: Without dead ends: 21 [2023-11-19 05:14:34,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:14:34,393 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:34,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:14:34,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-19 05:14:34,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-11-19 05:14:34,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:14:34,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2023-11-19 05:14:34,465 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 27 [2023-11-19 05:14:34,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:34,466 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2023-11-19 05:14:34,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 05:14:34,467 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2023-11-19 05:14:34,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 05:14:34,470 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:34,470 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:34,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:14:34,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:14:34,677 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:14:34,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:34,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1391736988, now seen corresponding path program 1 times [2023-11-19 05:14:34,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:14:34,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1337879785] [2023-11-19 05:14:34,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:34,680 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:14:34,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:14:34,682 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:14:34,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-19 05:14:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:34,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 05:14:34,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:14:43,648 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 05:14:43,648 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:14:43,648 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:14:43,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1337879785] [2023-11-19 05:14:43,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1337879785] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:14:43,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:14:43,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 05:14:43,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832091554] [2023-11-19 05:14:43,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:14:43,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 05:14:43,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:14:43,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 05:14:43,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:14:43,653 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 05:14:54,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:14:54,554 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2023-11-19 05:14:54,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 05:14:54,562 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2023-11-19 05:14:54,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:14:54,563 INFO L225 Difference]: With dead ends: 43 [2023-11-19 05:14:54,563 INFO L226 Difference]: Without dead ends: 41 [2023-11-19 05:14:54,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-11-19 05:14:54,569 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 43 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:14:54,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 100 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-19 05:14:54,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-19 05:14:54,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 28. [2023-11-19 05:14:54,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 05:14:54,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2023-11-19 05:14:54,586 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 27 [2023-11-19 05:14:54,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:14:54,586 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2023-11-19 05:14:54,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 05:14:54,587 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2023-11-19 05:14:54,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 05:14:54,588 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:14:54,588 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:14:54,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:14:54,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:14:54,797 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:14:54,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:14:54,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1389889946, now seen corresponding path program 1 times [2023-11-19 05:14:54,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:14:54,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [968947778] [2023-11-19 05:14:54,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:14:54,800 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:14:54,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:14:54,801 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-19 05:14:54,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-19 05:14:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:14:54,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 05:14:54,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:15:03,915 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 05:15:03,915 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:15:03,916 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:15:03,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [968947778] [2023-11-19 05:15:03,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [968947778] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:03,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:15:03,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 05:15:03,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026399557] [2023-11-19 05:15:03,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:03,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 05:15:03,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:15:03,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 05:15:03,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-19 05:15:03,921 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 05:15:12,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:15:12,562 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2023-11-19 05:15:12,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 05:15:12,572 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2023-11-19 05:15:12,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:15:12,573 INFO L225 Difference]: With dead ends: 41 [2023-11-19 05:15:12,573 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 05:15:12,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2023-11-19 05:15:12,576 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 34 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-19 05:15:12,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 95 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-19 05:15:12,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 05:15:12,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 05:15:12,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:15:12,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 05:15:12,579 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2023-11-19 05:15:12,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:15:12,579 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 05:15:12,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 05:15:12,579 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 05:15:12,580 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 05:15:12,583 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 05:15:12,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:15:12,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:15:12,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 05:15:14,359 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 05:15:14,360 INFO L895 garLoopResultBuilder]: At program point L56-2(lines 56 62) the Hoare annotation is: (and (let ((.cse0 ((_ to_fp 8 24) currentRoundingMode (/ 1.0 100000000000000000000.0))) (.cse1 ((_ to_fp 8 24) currentRoundingMode 9223372036854765600.0))) (or (and (fp.geq ~var_1_11~0 .cse0) (fp.leq ~var_1_11~0 .cse1)) (and (fp.leq ~var_1_11~0 (fp.neg .cse0)) (fp.geq ~var_1_11~0 (fp.neg .cse1))))) (= currentRoundingMode roundNearestTiesToEven)) [2023-11-19 05:15:14,360 INFO L899 garLoopResultBuilder]: For program point L56-3(lines 56 62) no Hoare annotation was computed. [2023-11-19 05:15:14,360 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-11-19 05:15:14,361 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-11-19 05:15:14,361 INFO L899 garLoopResultBuilder]: For program point L19-3(line 19) no Hoare annotation was computed. [2023-11-19 05:15:14,361 INFO L895 garLoopResultBuilder]: At program point L42(line 42) the Hoare annotation is: (and (let ((.cse0 ((_ to_fp 8 24) currentRoundingMode (/ 1.0 100000000000000000000.0))) (.cse1 ((_ to_fp 8 24) currentRoundingMode 9223372036854765600.0))) (or (and (fp.geq ~var_1_11~0 .cse0) (fp.leq ~var_1_11~0 .cse1)) (and (fp.leq ~var_1_11~0 (fp.neg .cse0)) (fp.geq ~var_1_11~0 (fp.neg .cse1))))) (= currentRoundingMode roundNearestTiesToEven)) [2023-11-19 05:15:14,361 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 05:15:14,362 INFO L895 garLoopResultBuilder]: At program point L42-1(line 42) the Hoare annotation is: (and (let ((.cse0 ((_ to_fp 8 24) currentRoundingMode (/ 1.0 100000000000000000000.0))) (.cse1 ((_ to_fp 8 24) currentRoundingMode 9223372036854765600.0))) (or (and (fp.geq ~var_1_11~0 .cse0) (fp.leq ~var_1_11~0 .cse1)) (and (fp.leq ~var_1_11~0 (fp.neg .cse0)) (fp.geq ~var_1_11~0 (fp.neg .cse1))))) (= currentRoundingMode roundNearestTiesToEven)) [2023-11-19 05:15:14,362 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 53 64) no Hoare annotation was computed. [2023-11-19 05:15:14,362 INFO L899 garLoopResultBuilder]: For program point L34(lines 34 38) no Hoare annotation was computed. [2023-11-19 05:15:14,362 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-19 05:15:14,362 INFO L899 garLoopResultBuilder]: For program point L30(lines 30 39) no Hoare annotation was computed. [2023-11-19 05:15:14,363 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-19 05:15:14,363 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 29) no Hoare annotation was computed. [2023-11-19 05:15:14,363 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-11-19 05:15:14,363 INFO L899 garLoopResultBuilder]: For program point L47(lines 47 48) no Hoare annotation was computed. [2023-11-19 05:15:14,363 INFO L899 garLoopResultBuilder]: For program point property_returnLabel#1(lines 49 52) no Hoare annotation was computed. [2023-11-19 05:15:14,364 INFO L895 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2023-11-19 05:15:14,364 INFO L899 garLoopResultBuilder]: For program point L45-1(lines 40 46) no Hoare annotation was computed. [2023-11-19 05:15:14,364 INFO L899 garLoopResultBuilder]: For program point L43(line 43) no Hoare annotation was computed. [2023-11-19 05:15:14,372 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 20) the Hoare annotation is: true [2023-11-19 05:15:14,372 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-11-19 05:15:14,372 INFO L899 garLoopResultBuilder]: For program point L20-2(line 20) no Hoare annotation was computed. [2023-11-19 05:15:14,374 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(line 20) no Hoare annotation was computed. [2023-11-19 05:15:14,378 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-19 05:15:14,384 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:15:14,402 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated [2023-11-19 05:15:14,404 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:15:14 BoogieIcfgContainer [2023-11-19 05:15:14,405 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:15:14,410 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:15:14,411 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:15:14,411 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:15:14,412 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:14:33" (3/4) ... [2023-11-19 05:15:14,416 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 05:15:14,422 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-19 05:15:14,431 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-11-19 05:15:14,432 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-19 05:15:14,433 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 05:15:14,436 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 05:15:14,558 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 05:15:14,558 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 05:15:14,559 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:15:14,563 INFO L158 Benchmark]: Toolchain (without parser) took 41726.90ms. Allocated memory was 79.7MB in the beginning and 125.8MB in the end (delta: 46.1MB). Free memory was 56.3MB in the beginning and 66.4MB in the end (delta: -10.1MB). Peak memory consumption was 36.7MB. Max. memory is 16.1GB. [2023-11-19 05:15:14,564 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 79.7MB. Free memory was 55.7MB in the beginning and 55.6MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:15:14,565 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.48ms. Allocated memory is still 79.7MB. Free memory was 56.0MB in the beginning and 44.8MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 05:15:14,565 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.68ms. Allocated memory is still 79.7MB. Free memory was 44.6MB in the beginning and 43.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:15:14,566 INFO L158 Benchmark]: Boogie Preprocessor took 64.50ms. Allocated memory is still 79.7MB. Free memory was 43.0MB in the beginning and 41.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:15:14,567 INFO L158 Benchmark]: RCFGBuilder took 591.35ms. Allocated memory is still 79.7MB. Free memory was 41.6MB in the beginning and 52.0MB in the end (delta: -10.4MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. [2023-11-19 05:15:14,567 INFO L158 Benchmark]: TraceAbstraction took 40554.35ms. Allocated memory was 79.7MB in the beginning and 125.8MB in the end (delta: 46.1MB). Free memory was 51.3MB in the beginning and 71.6MB in the end (delta: -20.3MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. [2023-11-19 05:15:14,568 INFO L158 Benchmark]: Witness Printer took 148.38ms. Allocated memory is still 125.8MB. Free memory was 71.6MB in the beginning and 66.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 05:15:14,571 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 79.7MB. Free memory was 55.7MB in the beginning and 55.6MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.48ms. Allocated memory is still 79.7MB. Free memory was 56.0MB in the beginning and 44.8MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.68ms. Allocated memory is still 79.7MB. Free memory was 44.6MB in the beginning and 43.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.50ms. Allocated memory is still 79.7MB. Free memory was 43.0MB in the beginning and 41.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 591.35ms. Allocated memory is still 79.7MB. Free memory was 41.6MB in the beginning and 52.0MB in the end (delta: -10.4MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. * TraceAbstraction took 40554.35ms. Allocated memory was 79.7MB in the beginning and 125.8MB in the end (delta: 46.1MB). Free memory was 51.3MB in the beginning and 71.6MB in the end (delta: -20.3MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. * Witness Printer took 148.38ms. Allocated memory is still 125.8MB. Free memory was 71.6MB in the beginning and 66.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated * 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 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 40.5s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 19.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 82 SdHoareTripleChecker+Valid, 8.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 77 mSDsluCounter, 219 SdHoareTripleChecker+Invalid, 7.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 152 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 269 IncrementalHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 67 mSDtfsCounter, 269 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 17.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=2, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 13 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 13 PreInvPairs, 22 NumberOfFragments, 91 HoareAnnotationTreeSize, 13 FomulaSimplifications, 438 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 335 FormulaSimplificationTreeSizeReductionInter, 1.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 17.8s InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 365 SizeOfPredicates, 22 NumberOfNonLiveVariables, 171 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 36/36 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: null RESULT: Ultimate proved your program to be correct! [2023-11-19 05:15:14,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce0edaa8-0213-4f91-b2f8-2e867f217298/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE