./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-50.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-50.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e26bc3348a806ff5be59d4e299270ec94a7d4962bb4f1a8d7ce9c935e106e68d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:54:50,840 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:54:50,929 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 15:54:50,935 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:54:50,936 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:54:50,968 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:54:50,969 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:54:50,970 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:54:50,971 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:54:50,972 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:54:50,972 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:54:50,973 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:54:50,974 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:54:50,975 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:54:50,975 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:54:50,976 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:54:50,976 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:54:50,977 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:54:50,978 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:54:50,978 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:54:50,979 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:54:50,980 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:54:50,981 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:54:50,981 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:54:50,982 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:54:50,983 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:54:50,983 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:54:50,984 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:54:50,984 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:54:50,985 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:54:50,985 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:54:50,986 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:54:50,986 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:54:50,986 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:54:50,987 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:54:50,987 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:54:50,987 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:54:50,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:54:50,988 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:54:50,988 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:54:50,989 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:54:50,989 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:54:50,989 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:54:50,989 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:54:50,990 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:54:50,990 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:54:50,990 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:54:50,990 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_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e26bc3348a806ff5be59d4e299270ec94a7d4962bb4f1a8d7ce9c935e106e68d [2023-12-02 15:54:51,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:54:51,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:54:51,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:54:51,319 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:54:51,319 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:54:51,321 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-50.i [2023-12-02 15:54:54,525 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:54:54,831 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:54:54,832 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-50.i [2023-12-02 15:54:54,855 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/data/c1f3a200a/1b947625892b45b2902c822f70d45672/FLAGa8a1fde55 [2023-12-02 15:54:54,870 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/data/c1f3a200a/1b947625892b45b2902c822f70d45672 [2023-12-02 15:54:54,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:54:54,875 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:54:54,876 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:54:54,876 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:54:54,881 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:54:54,881 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:54:54" (1/1) ... [2023-12-02 15:54:54,882 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2afe2abb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:54:54, skipping insertion in model container [2023-12-02 15:54:54,883 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:54:54" (1/1) ... [2023-12-02 15:54:54,934 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:54:55,059 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_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-50.i[916,929] [2023-12-02 15:54:55,279 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:54:55,303 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:54:55,316 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_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-50.i[916,929] [2023-12-02 15:54:55,424 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:54:55,454 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:54:55,454 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:54:55 WrapperNode [2023-12-02 15:54:55,455 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:54:55,456 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:54:55,457 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:54:55,457 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:54:55,468 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:54:55" (1/1) ... [2023-12-02 15:54:55,501 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:54:55" (1/1) ... [2023-12-02 15:54:55,633 INFO L138 Inliner]: procedures = 26, calls = 111, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 901 [2023-12-02 15:54:55,634 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:54:55,635 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:54:55,635 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:54:55,635 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:54:55,647 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:54:55" (1/1) ... [2023-12-02 15:54:55,648 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:54:55" (1/1) ... [2023-12-02 15:54:55,671 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:54:55" (1/1) ... [2023-12-02 15:54:55,671 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:54:55" (1/1) ... [2023-12-02 15:54:55,708 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:54:55" (1/1) ... [2023-12-02 15:54:55,718 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:54:55" (1/1) ... [2023-12-02 15:54:55,733 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:54:55" (1/1) ... [2023-12-02 15:54:55,748 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:54:55" (1/1) ... [2023-12-02 15:54:55,773 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:54:55,774 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:54:55,775 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:54:55,775 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:54:55,776 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:54:55" (1/1) ... [2023-12-02 15:54:55,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:54:55,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:54:55,814 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:54:55,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:54:55,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:54:55,857 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 15:54:55,857 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 15:54:55,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:54:55,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:54:55,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:54:56,028 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:54:56,031 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:54:57,470 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:54:59,162 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:54:59,162 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 15:54:59,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:54:59 BoogieIcfgContainer [2023-12-02 15:54:59,164 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:54:59,167 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:54:59,167 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:54:59,170 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:54:59,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:54:54" (1/3) ... [2023-12-02 15:54:59,171 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4efbd2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:54:59, skipping insertion in model container [2023-12-02 15:54:59,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:54:55" (2/3) ... [2023-12-02 15:54:59,172 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4efbd2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:54:59, skipping insertion in model container [2023-12-02 15:54:59,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:54:59" (3/3) ... [2023-12-02 15:54:59,173 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-50.i [2023-12-02 15:54:59,192 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:54:59,193 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:54:59,246 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:54:59,253 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;@492185af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:54:59,253 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:54:59,258 INFO L276 IsEmpty]: Start isEmpty. Operand has 160 states, 59 states have (on average 1.0508474576271187) internal successors, (62), 60 states have internal predecessors, (62), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-02 15:54:59,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2023-12-02 15:54:59,281 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:54:59,283 INFO L195 NwaCegarLoop]: trace histogram [98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:54:59,283 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:54:59,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:54:59,289 INFO L85 PathProgramCache]: Analyzing trace with hash -966975687, now seen corresponding path program 1 times [2023-12-02 15:54:59,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:54:59,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233366320] [2023-12-02 15:54:59,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:54:59,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:54:59,629 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 15:54:59,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1290390490] [2023-12-02 15:54:59,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:54:59,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:54:59,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:54:59,632 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:54:59,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 15:55:08,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2023-12-02 15:55:08,206 WARN L124 FreeRefinementEngine]: Strategy SIFA_TAIPAN was unsuccessful and could not determine trace feasibility [2023-12-02 15:55:08,208 INFO L360 BasicCegarLoop]: Counterexample might be feasible [2023-12-02 15:55:08,221 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 15:55:08,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:55:08,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-02 15:55:08,427 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 15:55:08,430 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 15:55:08,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:55:08 BoogieIcfgContainer [2023-12-02 15:55:08,471 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 15:55:08,471 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 15:55:08,471 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 15:55:08,472 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 15:55:08,472 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:54:59" (3/4) ... [2023-12-02 15:55:08,474 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 15:55:08,475 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 15:55:08,476 INFO L158 Benchmark]: Toolchain (without parser) took 13601.60ms. Allocated memory was 182.5MB in the beginning and 226.5MB in the end (delta: 44.0MB). Free memory was 142.8MB in the beginning and 111.0MB in the end (delta: 31.9MB). Peak memory consumption was 78.8MB. Max. memory is 16.1GB. [2023-12-02 15:55:08,477 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 123.7MB. Free memory was 91.7MB in the beginning and 91.6MB in the end (delta: 30.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 15:55:08,478 INFO L158 Benchmark]: CACSL2BoogieTranslator took 579.56ms. Allocated memory is still 182.5MB. Free memory was 142.8MB in the beginning and 110.6MB in the end (delta: 32.2MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-12-02 15:55:08,478 INFO L158 Benchmark]: Boogie Procedure Inliner took 177.83ms. Allocated memory is still 182.5MB. Free memory was 110.1MB in the beginning and 89.6MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 15:55:08,479 INFO L158 Benchmark]: Boogie Preprocessor took 138.48ms. Allocated memory is still 182.5MB. Free memory was 89.6MB in the beginning and 82.0MB in the end (delta: 7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-12-02 15:55:08,480 INFO L158 Benchmark]: RCFGBuilder took 3390.18ms. Allocated memory was 182.5MB in the beginning and 226.5MB in the end (delta: 44.0MB). Free memory was 82.0MB in the beginning and 114.1MB in the end (delta: -32.1MB). Peak memory consumption was 55.3MB. Max. memory is 16.1GB. [2023-12-02 15:55:08,480 INFO L158 Benchmark]: TraceAbstraction took 9304.20ms. Allocated memory is still 226.5MB. Free memory was 114.1MB in the beginning and 111.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. [2023-12-02 15:55:08,481 INFO L158 Benchmark]: Witness Printer took 3.95ms. Allocated memory is still 226.5MB. Free memory was 111.0MB in the beginning and 111.0MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 15:55:08,485 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 123.7MB. Free memory was 91.7MB in the beginning and 91.6MB in the end (delta: 30.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 579.56ms. Allocated memory is still 182.5MB. Free memory was 142.8MB in the beginning and 110.6MB in the end (delta: 32.2MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 177.83ms. Allocated memory is still 182.5MB. Free memory was 110.1MB in the beginning and 89.6MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 138.48ms. Allocated memory is still 182.5MB. Free memory was 89.6MB in the beginning and 82.0MB in the end (delta: 7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 3390.18ms. Allocated memory was 182.5MB in the beginning and 226.5MB in the end (delta: 44.0MB). Free memory was 82.0MB in the beginning and 114.1MB in the end (delta: -32.1MB). Peak memory consumption was 55.3MB. Max. memory is 16.1GB. * TraceAbstraction took 9304.20ms. Allocated memory is still 226.5MB. Free memory was 114.1MB in the beginning and 111.0MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. * Witness Printer took 3.95ms. Allocated memory is still 226.5MB. Free memory was 111.0MB in the beginning and 111.0MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. 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: unable to decide satisfiability of path constraint, overapproximation of shiftRight at line 172, overapproximation of shiftLeft at line 268, overapproximation of someBinaryArithmeticDOUBLEoperation at line 226, overapproximation of someBinaryFLOATComparisonOperation at line 189, overapproximation of bitwiseOr at line 152, overapproximation of someUnaryDOUBLEoperation at line 226, overapproximation of bitwiseAnd at line 247, overapproximation of someBinaryDOUBLEComparisonOperation at line 226, overapproximation of someBinaryArithmeticFLOAToperation at line 178, overapproximation of someUnaryFLOAToperation at line 201. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned char var_1_1 = 1; [L23] unsigned char var_1_7 = 0; [L24] unsigned char var_1_8 = 1; [L25] signed short int var_1_9 = -2; [L26] float var_1_13 = 999.4; [L27] float var_1_14 = 100.425; [L28] float var_1_15 = 3.375; [L29] float var_1_16 = 15.9; [L30] signed short int var_1_17 = -10; [L31] signed short int var_1_18 = 18060; [L32] unsigned char var_1_20 = 0; [L33] unsigned long int var_1_21 = 4; [L34] unsigned char var_1_23 = 0; [L35] unsigned char var_1_24 = 0; [L36] unsigned char var_1_25 = 100; [L37] unsigned char var_1_26 = 32; [L38] unsigned char var_1_27 = 10; [L39] unsigned char var_1_28 = 1; [L40] unsigned short int var_1_29 = 256; [L41] unsigned char var_1_30 = 1; [L42] unsigned char var_1_31 = 4; [L43] unsigned char var_1_32 = 2; [L44] unsigned char var_1_33 = 0; [L45] unsigned char var_1_34 = 25; [L46] unsigned char var_1_35 = 4; [L47] unsigned short int var_1_36 = 2; [L48] unsigned char var_1_37 = 4; [L49] unsigned char var_1_38 = 2; [L50] signed short int var_1_39 = 0; [L51] unsigned char var_1_40 = 0; [L52] unsigned char var_1_41 = 1; [L53] unsigned char var_1_42 = 0; [L54] float var_1_43 = 9.25; [L55] float var_1_44 = 255.8; [L56] unsigned short int var_1_45 = 500; [L57] unsigned char var_1_46 = 0; [L58] float var_1_47 = 256.7; [L59] float var_1_48 = 127.875; [L60] float var_1_49 = 31.75; [L61] unsigned char var_1_50 = 0; [L62] unsigned char var_1_51 = 1; [L63] unsigned char var_1_52 = 0; [L64] unsigned char var_1_53 = 2; [L65] unsigned char var_1_54 = 0; [L66] signed long int var_1_55 = 64; [L67] double var_1_56 = 63.125; [L68] unsigned long int var_1_57 = 32; [L69] unsigned long int var_1_58 = 64; [L70] unsigned long int var_1_59 = 2924564344; [L71] signed short int var_1_60 = -128; [L72] unsigned char var_1_61 = 128; [L73] unsigned short int var_1_62 = 2; [L74] double var_1_63 = 25.8; [L75] double var_1_64 = 100.25; [L76] unsigned short int var_1_65 = 1; [L77] signed char var_1_66 = -64; [L78] signed char var_1_67 = -4; [L79] signed char var_1_68 = 5; [L80] unsigned char var_1_69 = 50; [L81] unsigned short int var_1_70 = 2; [L82] unsigned char var_1_71 = 128; [L83] signed short int var_1_72 = -16; [L84] signed short int var_1_73 = -16; [L85] signed char var_1_74 = 8; [L86] signed char var_1_75 = 25; [L87] signed char var_1_76 = 64; [L88] float var_1_77 = -0.5; [L89] signed char var_1_78 = 4; [L90] unsigned char var_1_79 = 25; [L91] unsigned char var_1_80 = 0; [L92] signed char var_1_81 = -4; [L93] double var_1_82 = 4.4; [L94] double var_1_83 = 100.4; [L95] signed short int var_1_84 = -5; [L96] unsigned char var_1_85 = 2; [L97] signed long int var_1_86 = -100000; [L98] signed char var_1_87 = -32; [L99] signed short int var_1_88 = 2; [L100] signed short int var_1_89 = 0; [L101] double var_1_90 = 0.0; [L102] unsigned char var_1_91 = 1; [L103] unsigned char var_1_92 = 1; [L104] unsigned char var_1_93 = 0; [L105] unsigned char var_1_94 = 0; [L106] unsigned char var_1_95 = 0; [L107] unsigned char var_1_96 = 4; [L108] signed char var_1_97 = 4; [L109] unsigned long int var_1_98 = 64; [L110] float var_1_99 = 127.2; [L111] unsigned char var_1_100 = 0; [L112] signed char var_1_101 = 2; [L113] signed short int var_1_102 = -4; [L114] signed long int var_1_103 = -128; [L115] signed char var_1_104 = -32; [L116] signed char var_1_105 = 8; [L117] unsigned short int var_1_106 = 128; [L118] unsigned short int var_1_107 = 1; [L119] signed long int var_1_108 = 500; [L120] signed short int var_1_109 = 0; [L121] unsigned char var_1_110 = 0; [L122] signed long int var_1_111 = 0; [L123] unsigned short int var_1_112 = 2; [L124] float var_1_113 = 7.5; [L125] float var_1_114 = 99999999999999.5; [L126] float var_1_115 = 99.2; [L127] unsigned short int var_1_116 = 64; [L128] signed short int var_1_117 = 32; [L129] signed long int var_1_118 = -64; [L130] signed char var_1_119 = -32; [L131] double var_1_120 = 2.8; [L132] signed char var_1_121 = 4; [L133] unsigned char var_1_122 = 1; [L134] signed short int var_1_123 = -256; [L135] unsigned short int var_1_124 = 10; [L136] unsigned long int var_1_125 = 32; [L137] unsigned char var_1_126 = 1; [L138] unsigned long int var_1_127 = 5; [L139] signed long int var_1_128 = -1; [L140] signed char var_1_129 = -1; [L141] unsigned short int var_1_130 = 10; [L142] float var_1_131 = 128.375; [L143] float var_1_132 = 16.5; [L144] signed short int var_1_133 = -25; [L145] signed long int var_1_134 = -4; [L146] signed long int var_1_135 = 5; [L147] signed long int var_1_136 = 128; [L701] isInitial = 1 [L702] FCALL initially() [L703] COND TRUE 1 [L704] FCALL updateLastVariables() [L705] CALL updateVariables() [L542] var_1_7 = __VERIFIER_nondet_uchar() [L543] CALL assume_abort_if_not(var_1_7 >= 1) [L20] COND TRUE !cond [L543] RET assume_abort_if_not(var_1_7 >= 1) [L544] CALL assume_abort_if_not(var_1_7 <= 1) [L20] COND TRUE !cond [L544] RET assume_abort_if_not(var_1_7 <= 1) [L545] var_1_8 = __VERIFIER_nondet_uchar() [L546] CALL assume_abort_if_not(var_1_8 >= 1) [L20] COND TRUE !cond [L546] RET assume_abort_if_not(var_1_8 >= 1) [L547] CALL assume_abort_if_not(var_1_8 <= 1) [L20] COND TRUE !cond [L547] RET assume_abort_if_not(var_1_8 <= 1) [L548] var_1_14 = __VERIFIER_nondet_float() [L549] CALL assume_abort_if_not((var_1_14 >= -461168.6018427382800e+13F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 4611686.018427382800e+12F && var_1_14 >= 1.0e-20F )) [L20] COND TRUE !cond [L549] RET assume_abort_if_not((var_1_14 >= -461168.6018427382800e+13F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 4611686.018427382800e+12F && var_1_14 >= 1.0e-20F )) [L550] var_1_15 = __VERIFIER_nondet_float() [L551] CALL assume_abort_if_not((var_1_15 >= -461168.6018427382800e+13F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 4611686.018427382800e+12F && var_1_15 >= 1.0e-20F )) [L20] COND TRUE !cond [L551] RET assume_abort_if_not((var_1_15 >= -461168.6018427382800e+13F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 4611686.018427382800e+12F && var_1_15 >= 1.0e-20F )) [L552] var_1_16 = __VERIFIER_nondet_float() [L553] CALL assume_abort_if_not((var_1_16 >= -922337.2036854765600e+13F && var_1_16 <= -1.0e-20F) || (var_1_16 <= 9223372.036854765600e+12F && var_1_16 >= 1.0e-20F )) [L20] COND TRUE !cond [L553] RET assume_abort_if_not((var_1_16 >= -922337.2036854765600e+13F && var_1_16 <= -1.0e-20F) || (var_1_16 <= 9223372.036854765600e+12F && var_1_16 >= 1.0e-20F )) [L554] var_1_18 = __VERIFIER_nondet_short() [L555] CALL assume_abort_if_not(var_1_18 >= 16382) [L20] COND TRUE !cond [L555] RET assume_abort_if_not(var_1_18 >= 16382) [L556] CALL assume_abort_if_not(var_1_18 <= 32766) [L20] COND TRUE !cond [L556] RET assume_abort_if_not(var_1_18 <= 32766) [L557] var_1_21 = __VERIFIER_nondet_ulong() [L558] CALL assume_abort_if_not(var_1_21 >= 0) [L20] COND TRUE !cond [L558] RET assume_abort_if_not(var_1_21 >= 0) [L559] CALL assume_abort_if_not(var_1_21 <= 4294967295) [L20] COND TRUE !cond [L559] RET assume_abort_if_not(var_1_21 <= 4294967295) [L560] CALL assume_abort_if_not(var_1_21 != 0) [L20] COND TRUE !cond [L560] RET assume_abort_if_not(var_1_21 != 0) [L561] var_1_23 = __VERIFIER_nondet_uchar() [L562] CALL assume_abort_if_not(var_1_23 >= 0) [L20] COND TRUE !cond [L562] RET assume_abort_if_not(var_1_23 >= 0) [L563] CALL assume_abort_if_not(var_1_23 <= 0) [L20] COND TRUE !cond [L563] RET assume_abort_if_not(var_1_23 <= 0) [L564] var_1_24 = __VERIFIER_nondet_uchar() [L565] CALL assume_abort_if_not(var_1_24 >= 0) [L20] COND TRUE !cond [L565] RET assume_abort_if_not(var_1_24 >= 0) [L566] CALL assume_abort_if_not(var_1_24 <= 0) [L20] COND TRUE !cond [L566] RET assume_abort_if_not(var_1_24 <= 0) [L567] var_1_26 = __VERIFIER_nondet_uchar() [L568] CALL assume_abort_if_not(var_1_26 >= 0) [L20] COND TRUE !cond [L568] RET assume_abort_if_not(var_1_26 >= 0) [L569] CALL assume_abort_if_not(var_1_26 <= 127) [L20] COND TRUE !cond [L569] RET assume_abort_if_not(var_1_26 <= 127) [L570] var_1_27 = __VERIFIER_nondet_uchar() [L571] CALL assume_abort_if_not(var_1_27 >= 0) [L20] COND TRUE !cond [L571] RET assume_abort_if_not(var_1_27 >= 0) [L572] CALL assume_abort_if_not(var_1_27 <= 127) [L20] COND TRUE !cond [L572] RET assume_abort_if_not(var_1_27 <= 127) [L573] var_1_32 = __VERIFIER_nondet_uchar() [L574] CALL assume_abort_if_not(var_1_32 >= 0) [L20] COND TRUE !cond [L574] RET assume_abort_if_not(var_1_32 >= 0) [L575] CALL assume_abort_if_not(var_1_32 <= 255) [L20] COND TRUE !cond [L575] RET assume_abort_if_not(var_1_32 <= 255) [L576] var_1_33 = __VERIFIER_nondet_uchar() [L577] CALL assume_abort_if_not(var_1_33 >= 0) [L20] COND TRUE !cond [L577] RET assume_abort_if_not(var_1_33 >= 0) [L578] CALL assume_abort_if_not(var_1_33 <= 255) [L20] COND TRUE !cond [L578] RET assume_abort_if_not(var_1_33 <= 255) [L579] var_1_34 = __VERIFIER_nondet_uchar() [L580] CALL assume_abort_if_not(var_1_34 >= 0) [L20] COND TRUE !cond [L580] RET assume_abort_if_not(var_1_34 >= 0) [L581] CALL assume_abort_if_not(var_1_34 <= 127) [L20] COND TRUE !cond [L581] RET assume_abort_if_not(var_1_34 <= 127) [L582] var_1_35 = __VERIFIER_nondet_uchar() [L583] CALL assume_abort_if_not(var_1_35 >= 0) [L20] COND TRUE !cond [L583] RET assume_abort_if_not(var_1_35 >= 0) [L584] CALL assume_abort_if_not(var_1_35 <= 127) [L20] COND TRUE !cond [L584] RET assume_abort_if_not(var_1_35 <= 127) [L585] var_1_37 = __VERIFIER_nondet_uchar() [L586] CALL assume_abort_if_not(var_1_37 >= 0) [L20] COND TRUE !cond [L586] RET assume_abort_if_not(var_1_37 >= 0) [L587] CALL assume_abort_if_not(var_1_37 <= 255) [L20] COND TRUE !cond [L587] RET assume_abort_if_not(var_1_37 <= 255) [L588] CALL assume_abort_if_not(var_1_37 != 0) [L20] COND TRUE !cond [L588] RET assume_abort_if_not(var_1_37 != 0) [L589] var_1_38 = __VERIFIER_nondet_uchar() [L590] CALL assume_abort_if_not(var_1_38 >= 0) [L20] COND TRUE !cond [L590] RET assume_abort_if_not(var_1_38 >= 0) [L591] CALL assume_abort_if_not(var_1_38 <= 255) [L20] COND TRUE !cond [L591] RET assume_abort_if_not(var_1_38 <= 255) [L592] CALL assume_abort_if_not(var_1_38 != 0) [L20] COND TRUE !cond [L592] RET assume_abort_if_not(var_1_38 != 0) [L593] var_1_41 = __VERIFIER_nondet_uchar() [L594] CALL assume_abort_if_not(var_1_41 >= 0) [L20] COND TRUE !cond [L594] RET assume_abort_if_not(var_1_41 >= 0) [L595] CALL assume_abort_if_not(var_1_41 <= 1) [L20] COND TRUE !cond [L595] RET assume_abort_if_not(var_1_41 <= 1) [L596] var_1_42 = __VERIFIER_nondet_uchar() [L597] CALL assume_abort_if_not(var_1_42 >= 0) [L20] COND TRUE !cond [L597] RET assume_abort_if_not(var_1_42 >= 0) [L598] CALL assume_abort_if_not(var_1_42 <= 0) [L20] COND TRUE !cond [L598] RET assume_abort_if_not(var_1_42 <= 0) [L599] var_1_44 = __VERIFIER_nondet_float() [L600] CALL assume_abort_if_not((var_1_44 >= 0.0F && var_1_44 <= -1.0e-20F) || (var_1_44 <= 4611686.018427382800e+12F && var_1_44 >= 1.0e-20F )) [L20] COND TRUE !cond [L600] RET assume_abort_if_not((var_1_44 >= 0.0F && var_1_44 <= -1.0e-20F) || (var_1_44 <= 4611686.018427382800e+12F && var_1_44 >= 1.0e-20F )) [L601] var_1_47 = __VERIFIER_nondet_float() [L602] CALL assume_abort_if_not((var_1_47 >= -922337.2036854776000e+13F && var_1_47 <= -1.0e-20F) || (var_1_47 <= 9223372.036854776000e+12F && var_1_47 >= 1.0e-20F )) [L20] COND TRUE !cond [L602] RET assume_abort_if_not((var_1_47 >= -922337.2036854776000e+13F && var_1_47 <= -1.0e-20F) || (var_1_47 <= 9223372.036854776000e+12F && var_1_47 >= 1.0e-20F )) [L603] var_1_48 = __VERIFIER_nondet_float() [L604] CALL assume_abort_if_not((var_1_48 >= -922337.2036854776000e+13F && var_1_48 <= -1.0e-20F) || (var_1_48 <= 9223372.036854776000e+12F && var_1_48 >= 1.0e-20F )) [L20] COND TRUE !cond [L604] RET assume_abort_if_not((var_1_48 >= -922337.2036854776000e+13F && var_1_48 <= -1.0e-20F) || (var_1_48 <= 9223372.036854776000e+12F && var_1_48 >= 1.0e-20F )) [L605] var_1_49 = __VERIFIER_nondet_float() [L606] CALL assume_abort_if_not((var_1_49 >= -922337.2036854776000e+13F && var_1_49 <= -1.0e-20F) || (var_1_49 <= 9223372.036854776000e+12F && var_1_49 >= 1.0e-20F )) [L20] COND TRUE !cond [L606] RET assume_abort_if_not((var_1_49 >= -922337.2036854776000e+13F && var_1_49 <= -1.0e-20F) || (var_1_49 <= 9223372.036854776000e+12F && var_1_49 >= 1.0e-20F )) [L607] var_1_50 = __VERIFIER_nondet_uchar() [L608] CALL assume_abort_if_not(var_1_50 >= 1) [L20] COND TRUE !cond [L608] RET assume_abort_if_not(var_1_50 >= 1) [L609] CALL assume_abort_if_not(var_1_50 <= 1) [L20] COND TRUE !cond [L609] RET assume_abort_if_not(var_1_50 <= 1) [L610] var_1_51 = __VERIFIER_nondet_uchar() [L611] CALL assume_abort_if_not(var_1_51 >= 0) [L20] COND TRUE !cond [L611] RET assume_abort_if_not(var_1_51 >= 0) [L612] CALL assume_abort_if_not(var_1_51 <= 1) [L20] COND TRUE !cond [L612] RET assume_abort_if_not(var_1_51 <= 1) [L613] var_1_53 = __VERIFIER_nondet_uchar() [L614] CALL assume_abort_if_not(var_1_53 >= 0) [L20] COND TRUE !cond [L614] RET assume_abort_if_not(var_1_53 >= 0) [L615] CALL assume_abort_if_not(var_1_53 <= 254) [L20] COND TRUE !cond [L615] RET assume_abort_if_not(var_1_53 <= 254) [L616] var_1_54 = __VERIFIER_nondet_uchar() [L617] CALL assume_abort_if_not(var_1_54 >= 0) [L20] COND TRUE !cond [L617] RET assume_abort_if_not(var_1_54 >= 0) [L618] CALL assume_abort_if_not(var_1_54 <= 127) [L20] COND TRUE !cond [L618] RET assume_abort_if_not(var_1_54 <= 127) [L619] var_1_58 = __VERIFIER_nondet_ulong() [L620] CALL assume_abort_if_not(var_1_58 >= 0) [L20] COND TRUE !cond [L620] RET assume_abort_if_not(var_1_58 >= 0) [L621] CALL assume_abort_if_not(var_1_58 <= 4294967294) [L20] COND TRUE !cond [L621] RET assume_abort_if_not(var_1_58 <= 4294967294) [L622] var_1_59 = __VERIFIER_nondet_ulong() [L623] CALL assume_abort_if_not(var_1_59 >= 2147483647) [L20] COND TRUE !cond [L623] RET assume_abort_if_not(var_1_59 >= 2147483647) [L624] CALL assume_abort_if_not(var_1_59 <= 4294967294) [L20] COND TRUE !cond [L624] RET assume_abort_if_not(var_1_59 <= 4294967294) [L625] var_1_64 = __VERIFIER_nondet_double() [L626] CALL assume_abort_if_not((var_1_64 >= 0.0F && var_1_64 <= -1.0e-20F) || (var_1_64 <= 9223372.036854765600e+12F && var_1_64 >= 1.0e-20F )) [L20] COND TRUE !cond [L626] RET assume_abort_if_not((var_1_64 >= 0.0F && var_1_64 <= -1.0e-20F) || (var_1_64 <= 9223372.036854765600e+12F && var_1_64 >= 1.0e-20F )) [L627] var_1_67 = __VERIFIER_nondet_char() [L628] CALL assume_abort_if_not(var_1_67 >= -126) [L20] COND TRUE !cond [L628] RET assume_abort_if_not(var_1_67 >= -126) [L629] CALL assume_abort_if_not(var_1_67 <= 126) [L20] COND TRUE !cond [L629] RET assume_abort_if_not(var_1_67 <= 126) [L630] var_1_68 = __VERIFIER_nondet_char() [L631] CALL assume_abort_if_not(var_1_68 >= -126) [L20] COND TRUE !cond [L631] RET assume_abort_if_not(var_1_68 >= -126) [L632] CALL assume_abort_if_not(var_1_68 <= 126) [L20] COND TRUE !cond [L632] RET assume_abort_if_not(var_1_68 <= 126) [L633] var_1_70 = __VERIFIER_nondet_ushort() [L634] CALL assume_abort_if_not(var_1_70 >= 0) [L20] COND TRUE !cond [L634] RET assume_abort_if_not(var_1_70 >= 0) [L635] CALL assume_abort_if_not(var_1_70 <= 65535) [L20] COND TRUE !cond [L635] RET assume_abort_if_not(var_1_70 <= 65535) [L636] var_1_71 = __VERIFIER_nondet_uchar() [L637] CALL assume_abort_if_not(var_1_71 >= 127) [L20] COND TRUE !cond [L637] RET assume_abort_if_not(var_1_71 >= 127) [L638] CALL assume_abort_if_not(var_1_71 <= 254) [L20] COND TRUE !cond [L638] RET assume_abort_if_not(var_1_71 <= 254) [L639] var_1_73 = __VERIFIER_nondet_short() [L640] CALL assume_abort_if_not(var_1_73 >= -32767) [L20] COND TRUE !cond [L640] RET assume_abort_if_not(var_1_73 >= -32767) [L641] CALL assume_abort_if_not(var_1_73 <= 32766) [L20] COND TRUE !cond [L641] RET assume_abort_if_not(var_1_73 <= 32766) [L642] var_1_75 = __VERIFIER_nondet_char() [L643] CALL assume_abort_if_not(var_1_75 >= -63) [L20] COND TRUE !cond [L643] RET assume_abort_if_not(var_1_75 >= -63) [L644] CALL assume_abort_if_not(var_1_75 <= 63) [L20] COND TRUE !cond [L644] RET assume_abort_if_not(var_1_75 <= 63) [L645] var_1_76 = __VERIFIER_nondet_char() [L646] CALL assume_abort_if_not(var_1_76 >= 0) [L20] COND TRUE !cond [L646] RET assume_abort_if_not(var_1_76 >= 0) [L647] CALL assume_abort_if_not(var_1_76 <= 126) [L20] COND TRUE !cond [L647] RET assume_abort_if_not(var_1_76 <= 126) [L648] var_1_79 = __VERIFIER_nondet_uchar() [L649] CALL assume_abort_if_not(var_1_79 >= 15) [L20] COND TRUE !cond [L649] RET assume_abort_if_not(var_1_79 >= 15) [L650] CALL assume_abort_if_not(var_1_79 <= 31) [L20] COND TRUE !cond [L650] RET assume_abort_if_not(var_1_79 <= 31) [L651] var_1_80 = __VERIFIER_nondet_uchar() [L652] CALL assume_abort_if_not(var_1_80 >= 0) [L20] COND TRUE !cond [L652] RET assume_abort_if_not(var_1_80 >= 0) [L653] CALL assume_abort_if_not(var_1_80 <= 15) [L20] COND TRUE !cond [L653] RET assume_abort_if_not(var_1_80 <= 15) [L654] var_1_83 = __VERIFIER_nondet_double() [L655] CALL assume_abort_if_not((var_1_83 >= -461168.6018427382800e+13F && var_1_83 <= -1.0e-20F) || (var_1_83 <= 4611686.018427382800e+12F && var_1_83 >= 1.0e-20F )) [L20] COND TRUE !cond [L655] RET assume_abort_if_not((var_1_83 >= -461168.6018427382800e+13F && var_1_83 <= -1.0e-20F) || (var_1_83 <= 4611686.018427382800e+12F && var_1_83 >= 1.0e-20F )) [L656] var_1_86 = __VERIFIER_nondet_long() [L657] CALL assume_abort_if_not(var_1_86 >= -2147483648) [L20] COND TRUE !cond [L657] RET assume_abort_if_not(var_1_86 >= -2147483648) [L658] CALL assume_abort_if_not(var_1_86 <= 2147483647) [L20] COND TRUE !cond [L658] RET assume_abort_if_not(var_1_86 <= 2147483647) [L659] var_1_87 = __VERIFIER_nondet_char() [L660] CALL assume_abort_if_not(var_1_87 >= -128) [L20] COND TRUE !cond [L660] RET assume_abort_if_not(var_1_87 >= -128) [L661] CALL assume_abort_if_not(var_1_87 <= 127) [L20] COND TRUE !cond [L661] RET assume_abort_if_not(var_1_87 <= 127) [L662] var_1_89 = __VERIFIER_nondet_short() [L663] CALL assume_abort_if_not(var_1_89 >= -16383) [L20] COND TRUE !cond [L663] RET assume_abort_if_not(var_1_89 >= -16383) [L664] CALL assume_abort_if_not(var_1_89 <= 16383) [L20] COND TRUE !cond [L664] RET assume_abort_if_not(var_1_89 <= 16383) [L665] var_1_92 = __VERIFIER_nondet_uchar() [L666] CALL assume_abort_if_not(var_1_92 >= 1) [L20] COND TRUE !cond [L666] RET assume_abort_if_not(var_1_92 >= 1) [L667] CALL assume_abort_if_not(var_1_92 <= 1) [L20] COND TRUE !cond [L667] RET assume_abort_if_not(var_1_92 <= 1) [L668] var_1_93 = __VERIFIER_nondet_uchar() [L669] CALL assume_abort_if_not(var_1_93 >= 0) [L20] COND TRUE !cond [L669] RET assume_abort_if_not(var_1_93 >= 0) [L670] CALL assume_abort_if_not(var_1_93 <= 0) [L20] COND TRUE !cond [L670] RET assume_abort_if_not(var_1_93 <= 0) [L671] var_1_94 = __VERIFIER_nondet_uchar() [L672] CALL assume_abort_if_not(var_1_94 >= 0) [L20] COND TRUE !cond [L672] RET assume_abort_if_not(var_1_94 >= 0) [L673] CALL assume_abort_if_not(var_1_94 <= 0) [L20] COND TRUE !cond [L673] RET assume_abort_if_not(var_1_94 <= 0) [L674] var_1_95 = __VERIFIER_nondet_uchar() [L675] CALL assume_abort_if_not(var_1_95 >= 0) [L20] COND TRUE !cond [L675] RET assume_abort_if_not(var_1_95 >= 0) [L676] CALL assume_abort_if_not(var_1_95 <= 0) [L20] COND TRUE !cond [L676] RET assume_abort_if_not(var_1_95 <= 0) [L677] var_1_105 = __VERIFIER_nondet_char() [L678] CALL assume_abort_if_not(var_1_105 >= 0) [L20] COND TRUE !cond [L678] RET assume_abort_if_not(var_1_105 >= 0) [L679] CALL assume_abort_if_not(var_1_105 <= 126) [L20] COND TRUE !cond [L679] RET assume_abort_if_not(var_1_105 <= 126) [L680] var_1_111 = __VERIFIER_nondet_long() [L681] CALL assume_abort_if_not(var_1_111 >= -2147483648) [L20] COND TRUE !cond [L681] RET assume_abort_if_not(var_1_111 >= -2147483648) [L682] CALL assume_abort_if_not(var_1_111 <= 2147483647) [L20] COND TRUE !cond [L682] RET assume_abort_if_not(var_1_111 <= 2147483647) [L683] var_1_114 = __VERIFIER_nondet_float() [L684] CALL assume_abort_if_not((var_1_114 >= -230584.3009213691390e+13F && var_1_114 <= -1.0e-20F) || (var_1_114 <= 2305843.009213691390e+12F && var_1_114 >= 1.0e-20F )) [L20] COND TRUE !cond [L684] RET assume_abort_if_not((var_1_114 >= -230584.3009213691390e+13F && var_1_114 <= -1.0e-20F) || (var_1_114 <= 2305843.009213691390e+12F && var_1_114 >= 1.0e-20F )) [L685] var_1_115 = __VERIFIER_nondet_float() [L686] CALL assume_abort_if_not((var_1_115 >= -230584.3009213691390e+13F && var_1_115 <= -1.0e-20F) || (var_1_115 <= 2305843.009213691390e+12F && var_1_115 >= 1.0e-20F )) [L20] COND TRUE !cond [L686] RET assume_abort_if_not((var_1_115 >= -230584.3009213691390e+13F && var_1_115 <= -1.0e-20F) || (var_1_115 <= 2305843.009213691390e+12F && var_1_115 >= 1.0e-20F )) [L687] var_1_120 = __VERIFIER_nondet_double() [L688] CALL assume_abort_if_not((var_1_120 >= -922337.2036854776000e+13F && var_1_120 <= -1.0e-20F) || (var_1_120 <= 9223372.036854776000e+12F && var_1_120 >= 1.0e-20F )) [L20] COND TRUE !cond [L688] RET assume_abort_if_not((var_1_120 >= -922337.2036854776000e+13F && var_1_120 <= -1.0e-20F) || (var_1_120 <= 9223372.036854776000e+12F && var_1_120 >= 1.0e-20F )) [L689] CALL assume_abort_if_not(var_1_120 != 0.0F) [L20] COND TRUE !cond [L689] RET assume_abort_if_not(var_1_120 != 0.0F) [L690] var_1_135 = __VERIFIER_nondet_long() [L691] CALL assume_abort_if_not(var_1_135 >= -2147483646) [L20] COND TRUE !cond [L691] RET assume_abort_if_not(var_1_135 >= -2147483646) [L692] CALL assume_abort_if_not(var_1_135 <= 2147483646) [L20] COND TRUE !cond [L692] RET assume_abort_if_not(var_1_135 <= 2147483646) [L705] RET updateVariables() [L706] CALL step() [L151] COND FALSE !(! (var_1_32 < var_1_33)) [L162] EXPR (var_1_33 % var_1_37) | var_1_34 [L162] COND TRUE var_1_32 >= ((var_1_33 % var_1_37) | var_1_34) [L163] var_1_36 = (var_1_35 + ((((var_1_31) < (((((var_1_37) < (var_1_32)) ? (var_1_37) : (var_1_32))))) ? (var_1_31) : (((((var_1_37) < (var_1_32)) ? (var_1_37) : (var_1_32))))))) [L169] COND TRUE var_1_36 >= var_1_34 [L170] var_1_39 = var_1_37 [L172] EXPR (128 - var_1_35) >> var_1_34 [L172] COND FALSE !(((128 - var_1_35) >> var_1_34) <= var_1_36) [L177] COND FALSE !((var_1_35 == (var_1_37 / var_1_38)) || var_1_40) [L180] COND TRUE \read(var_1_40) [L181] var_1_45 = ((((var_1_35) < 0 ) ? -(var_1_35) : (var_1_35))) [L189] COND FALSE !(((((var_1_44 * var_1_43) < 0 ) ? -(var_1_44 * var_1_43) : (var_1_44 * var_1_43))) < (((((var_1_47) < (var_1_48)) ? (var_1_47) : (var_1_48))) * var_1_49)) [L192] var_1_46 = (var_1_51 || (! var_1_42)) [L194] COND TRUE ((((var_1_38) < 0 ) ? -(var_1_38) : (var_1_38))) <= 4 [L195] var_1_52 = ((((((((var_1_35) > (var_1_34)) ? (var_1_35) : (var_1_34)))) < (((((var_1_53) < 0 ) ? -(var_1_53) : (var_1_53))))) ? (((((var_1_35) > (var_1_34)) ? (var_1_35) : (var_1_34)))) : (((((var_1_53) < 0 ) ? -(var_1_53) : (var_1_53)))))) [L199] var_1_55 = ((((var_1_31) < 0 ) ? -(var_1_31) : (var_1_31))) [L200] COND FALSE !(var_1_38 >= var_1_54) [L203] COND FALSE !(((((var_1_32) < (var_1_45)) ? (var_1_32) : (var_1_45))) >= var_1_35) [L212] var_1_57 = ((((var_1_33) > (((((var_1_59 - 32u) < 0 ) ? -(var_1_59 - 32u) : (var_1_59 - 32u))))) ? (var_1_33) : (((((var_1_59 - 32u) < 0 ) ? -(var_1_59 - 32u) : (var_1_59 - 32u)))))) [L214] var_1_60 = ((((var_1_38) < (var_1_31)) ? (var_1_38) : (var_1_31))) [L215] COND FALSE !(var_1_39 > var_1_45) [L218] var_1_61 = (((((var_1_54) < 0 ) ? -(var_1_54) : (var_1_54))) + var_1_34) [L220] COND FALSE !(((((var_1_38) < (var_1_34)) ? (var_1_38) : (var_1_34))) >= (var_1_33 % var_1_37)) [L225] COND FALSE !(var_1_59 > (var_1_31 % var_1_38)) [L228] COND TRUE var_1_57 < var_1_59 [L229] var_1_65 = ((((1) > (var_1_37)) ? (1) : (var_1_37))) [L239] COND FALSE !(-25 != (var_1_36 * var_1_57)) [L242] var_1_66 = (((((((var_1_68) < 0 ) ? -(var_1_68) : (var_1_68))) < 0 ) ? -((((var_1_68) < 0 ) ? -(var_1_68) : (var_1_68))) : ((((var_1_68) < 0 ) ? -(var_1_68) : (var_1_68))))) [L244] EXPR var_1_57 ^ var_1_70 [L244] EXPR ((var_1_57 ^ var_1_70) < 0 ) ? -(var_1_57 ^ var_1_70) : (var_1_57 ^ var_1_70) [L244] EXPR var_1_57 ^ var_1_70 [L244] EXPR ((var_1_57 ^ var_1_70) < 0 ) ? -(var_1_57 ^ var_1_70) : (var_1_57 ^ var_1_70) [L244] COND TRUE var_1_62 > ((((var_1_57 ^ var_1_70) < 0 ) ? -(var_1_57 ^ var_1_70) : (var_1_57 ^ var_1_70))) [L245] var_1_69 = (((((var_1_71) < 0 ) ? -(var_1_71) : (var_1_71))) - ((((var_1_54) < 0 ) ? -(var_1_54) : (var_1_54)))) [L247] EXPR var_1_54 & var_1_36 [L247] COND FALSE !((var_1_54 & var_1_36) <= var_1_37) [L250] COND FALSE !(var_1_67 > 4) [L253] EXPR var_1_75 ^ var_1_35 [L253] COND TRUE (var_1_61 * var_1_39) >= (var_1_75 ^ var_1_35) [L254] var_1_74 = var_1_75 [L263] COND FALSE !(var_1_35 > var_1_73) [L268] EXPR (-1 % var_1_37) << (var_1_79 - var_1_80) [L268] COND TRUE ((-1 % var_1_37) << (var_1_79 - var_1_80)) >= var_1_34 [L269] var_1_78 = (((((((var_1_67) < 0 ) ? -(var_1_67) : (var_1_67))) < 0 ) ? -((((var_1_67) < 0 ) ? -(var_1_67) : (var_1_67))) : ((((var_1_67) < 0 ) ? -(var_1_67) : (var_1_67))))) [L271] COND TRUE 16.45f >= (- var_1_44) [L272] COND FALSE !(\read(var_1_46)) [L276] COND FALSE !(((((var_1_44) < 0 ) ? -(var_1_44) : (var_1_44))) < ((((var_1_77) < (((((1.75f) > (var_1_47)) ? (1.75f) : (var_1_47))))) ? (var_1_77) : (((((1.75f) > (var_1_47)) ? (1.75f) : (var_1_47))))))) [L279] EXPR ((((var_1_53) < (var_1_45)) ? (var_1_53) : (var_1_45))) | var_1_57 [L279] COND TRUE (((((var_1_53) < (var_1_45)) ? (var_1_53) : (var_1_45))) | var_1_57) < var_1_37 [L280] var_1_82 = var_1_83 [L283] COND FALSE !(var_1_68 > -64) [L286] COND TRUE ((var_1_79 + var_1_71) >> (4 + 16)) >= var_1_86 [L287] COND FALSE !(var_1_67 < var_1_87) [L299] COND FALSE !(var_1_84 <= var_1_36) [L302] var_1_88 = ((((var_1_35) < 0 ) ? -(var_1_35) : (var_1_35))) [L304] COND TRUE (var_1_72 < var_1_61) || var_1_41 [L305] EXPR var_1_74 | var_1_76 [L305] EXPR (((var_1_74 | var_1_76)) < (((((var_1_68) < (var_1_36)) ? (var_1_68) : (var_1_36))))) ? ((var_1_74 | var_1_76)) : (((((var_1_68) < (var_1_36)) ? (var_1_68) : (var_1_36)))) [L305] COND TRUE (((((var_1_74 | var_1_76)) < (((((var_1_68) < (var_1_36)) ? (var_1_68) : (var_1_36))))) ? ((var_1_74 | var_1_76)) : (((((var_1_68) < (var_1_36)) ? (var_1_68) : (var_1_36)))))) >= var_1_85 [L306] var_1_90 = (((((var_1_44 - var_1_64)) < (var_1_83)) ? ((var_1_44 - var_1_64)) : (var_1_83))) [L313] COND TRUE var_1_37 >= var_1_86 [L314] COND FALSE !(((((var_1_32) < ((var_1_80 + var_1_86))) ? (var_1_32) : ((var_1_80 + var_1_86)))) <= ((var_1_36 / 4) / var_1_79)) [L324] COND FALSE !(var_1_35 < var_1_72) [L327] var_1_96 = var_1_35 [L329] COND FALSE !(var_1_85 > var_1_36) [L332] COND FALSE !(\read(var_1_93)) [L335] COND FALSE !(\read(var_1_94)) [L338] EXPR ((((16) < 0 ) ? -(16) : (16))) ^ var_1_35 [L338] COND FALSE !(var_1_36 < (((((16) < 0 ) ? -(16) : (16))) ^ var_1_35)) [L345] COND FALSE !(var_1_89 <= -16) [L348] COND TRUE ((((var_1_66) < 0 ) ? -(var_1_66) : (var_1_66))) < (var_1_86 % var_1_38) [L349] COND FALSE !(var_1_31 > (var_1_53 + (var_1_34 / var_1_38))) [L357] COND FALSE !(var_1_45 <= var_1_85) [L360] COND FALSE !(((((var_1_80) < 0 ) ? -(var_1_80) : (var_1_80))) > var_1_84) [L368] COND TRUE var_1_66 >= var_1_57 [L369] var_1_104 = (((((((((var_1_79) > (var_1_76)) ? (var_1_79) : (var_1_76)))) > (((((var_1_67) < 0 ) ? -(var_1_67) : (var_1_67))))) ? (((((var_1_79) > (var_1_76)) ? (var_1_79) : (var_1_76)))) : (((((var_1_67) < 0 ) ? -(var_1_67) : (var_1_67)))))) - ((((var_1_80) > (var_1_105)) ? (var_1_80) : (var_1_105)))) [L371] COND FALSE !((- (var_1_44 - var_1_64)) > var_1_83) [L374] COND TRUE var_1_101 < ((((var_1_34) < 0 ) ? -(var_1_34) : (var_1_34))) [L375] COND TRUE var_1_67 <= var_1_81 [L376] COND FALSE !(var_1_104 == var_1_60) [L383] COND TRUE var_1_57 <= var_1_52 [L384] EXPR var_1_45 ^ 2 [L384] COND FALSE !((var_1_45 ^ 2) <= var_1_84) [L387] COND TRUE \read(var_1_50) [L388] var_1_108 = ((((var_1_35) < 0 ) ? -(var_1_35) : (var_1_35))) [L396] COND FALSE !(! ((var_1_70 + var_1_79) < var_1_75)) [L399] (var_1_111 > -1000) || (var_1_54 >= (var_1_59 | var_1_104)) [L399] EXPR var_1_59 | var_1_104 [L399] (var_1_111 > -1000) || (var_1_54 >= (var_1_59 | var_1_104)) [L399] COND TRUE (var_1_111 > -1000) || (var_1_54 >= (var_1_59 | var_1_104)) [L400] var_1_110 = ((var_1_51 && var_1_94) || var_1_42) [L408] EXPR var_1_53 & var_1_68 [L408] COND TRUE (- var_1_72) < (var_1_53 & var_1_68) [L409] EXPR var_1_89 << var_1_101 [L409] COND FALSE !((var_1_89 << var_1_101) == var_1_75) [L412] var_1_112 = (((((((var_1_80) < 0 ) ? -(var_1_80) : (var_1_80))) < 0 ) ? -((((var_1_80) < 0 ) ? -(var_1_80) : (var_1_80))) : ((((var_1_80) < 0 ) ? -(var_1_80) : (var_1_80))))) [L417] COND FALSE !(((((var_1_48) < 0 ) ? -(var_1_48) : (var_1_48))) >= (((((var_1_49) < 0 ) ? -(var_1_49) : (var_1_49))) - var_1_44)) [L420] COND FALSE !(var_1_78 >= var_1_112) [L428] COND FALSE !(var_1_62 >= (64 % var_1_71)) [L431] COND FALSE !(var_1_90 > (((((- var_1_113)) > (var_1_82)) ? ((- var_1_113)) : (var_1_82)))) [L434] COND FALSE !(\read(var_1_50)) [L437] COND TRUE (var_1_63 / var_1_120) <= var_1_99 [L438] var_1_119 = (((((((var_1_105) > (var_1_76)) ? (var_1_105) : (var_1_76))) < 0 ) ? -((((var_1_105) > (var_1_76)) ? (var_1_105) : (var_1_76))) : ((((var_1_105) > (var_1_76)) ? (var_1_105) : (var_1_76))))) [L446] var_1_121 = var_1_79 [L447] COND TRUE \read(var_1_51) [L448] var_1_122 = 0 [L452] COND FALSE !(\read(var_1_40)) [L455] var_1_123 = var_1_33 [L457] COND TRUE \read(var_1_122) [L458] var_1_124 = var_1_33 [L460] COND FALSE !(\read(var_1_51)) [L463] COND FALSE !(\read(var_1_94)) [L466] var_1_127 = var_1_85 [L467] COND FALSE !(\read(var_1_126)) [L470] var_1_128 = var_1_104 [L472] var_1_129 = var_1_76 [L473] COND FALSE !(\read(var_1_95)) [L476] var_1_130 = var_1_54 [L478] COND TRUE \read(var_1_110) [L479] var_1_131 = var_1_114 [L483] COND TRUE \read(var_1_40) [L484] var_1_132 = 0.375f [L486] COND TRUE \read(var_1_110) [L487] var_1_133 = var_1_33 [L489] COND TRUE \read(var_1_41) [L490] var_1_134 = ((((var_1_38) > (((((var_1_135) < 0 ) ? -(var_1_135) : (var_1_135))))) ? (var_1_38) : (((((var_1_135) < 0 ) ? -(var_1_135) : (var_1_135)))))) [L492] COND FALSE !(var_1_75 >= var_1_105) [L499] var_1_136 = 50 [L501] COND TRUE \read(var_1_8) [L502] var_1_13 = (((((var_1_14 + var_1_15)) < (((((-0.2f) < (var_1_16)) ? (-0.2f) : (var_1_16))))) ? ((var_1_14 + var_1_15)) : (((((-0.2f) < (var_1_16)) ? (-0.2f) : (var_1_16)))))) [L504] COND TRUE \read(var_1_8) [L505] var_1_25 = (var_1_26 + var_1_27) [L507] var_1_29 = var_1_27 [L508] var_1_30 = var_1_8 [L509] COND TRUE (var_1_29 > var_1_25) && var_1_30 [L510] var_1_9 = var_1_25 [L514] var_1_17 = ((var_1_18 - 25) - var_1_25) [L515] signed long int stepLocal_2 = var_1_25 + var_1_17; [L516] COND TRUE ((var_1_18 % var_1_21) & ((((1u) < 0 ) ? -(1u) : (1u)))) < stepLocal_2 [L517] var_1_20 = (var_1_23 || var_1_24) [L521] signed short int stepLocal_3 = var_1_9; [L522] COND FALSE !((~ var_1_29) > stepLocal_3) [L525] var_1_28 = (var_1_20 || ((! var_1_23) && (var_1_24 || var_1_7))) [L527] signed long int stepLocal_1 = (((var_1_9) > (var_1_25)) ? (var_1_9) : (var_1_25)); [L528] unsigned char stepLocal_0 = var_1_25; [L529] COND FALSE !(stepLocal_1 <= (var_1_25 - var_1_25)) [L538] var_1_1 = 0 [L706] RET step() [L707] CALL, EXPR property() [L697-L698] return (((((((((((((var_1_9) > (var_1_25)) ? (var_1_9) : (var_1_25))) <= (var_1_25 - var_1_25)) ? ((var_1_25 < var_1_25) ? (var_1_20 ? (var_1_1 == ((unsigned char) var_1_7)) : (var_1_1 == ((unsigned char) var_1_8))) : 1) : (var_1_1 == ((unsigned char) 0))) && (((var_1_29 > var_1_25) && var_1_30) ? (var_1_9 == ((signed short int) var_1_25)) : (var_1_9 == ((signed short int) ((((var_1_25) > ((((((var_1_25 - 10)) < (var_1_25)) ? ((var_1_25 - 10)) : (var_1_25))))) ? (var_1_25) : ((((((var_1_25 - 10)) < (var_1_25)) ? ((var_1_25 - 10)) : (var_1_25)))))))))) && (var_1_8 ? (var_1_13 == ((float) (((((var_1_14 + var_1_15)) < (((((-0.2f) < (var_1_16)) ? (-0.2f) : (var_1_16))))) ? ((var_1_14 + var_1_15)) : (((((-0.2f) < (var_1_16)) ? (-0.2f) : (var_1_16)))))))) : 1)) && (var_1_17 == ((signed short int) ((var_1_18 - 25) - var_1_25)))) && ((((var_1_18 % var_1_21) & ((((1u) < 0 ) ? -(1u) : (1u)))) < (var_1_25 + var_1_17)) ? (var_1_20 == ((unsigned char) (var_1_23 || var_1_24))) : (var_1_20 == ((unsigned char) var_1_7)))) && (var_1_8 ? (var_1_25 == ((unsigned char) (var_1_26 + var_1_27))) : 1)) && (((~ var_1_29) > var_1_9) ? (var_1_28 == ((unsigned char) (! var_1_7))) : (var_1_28 == ((unsigned char) (var_1_20 || ((! var_1_23) && (var_1_24 || var_1_7))))))) && (var_1_29 == ((unsigned short int) var_1_27))) && (var_1_30 == ((unsigned char) var_1_8)) ; [L707] RET, EXPR property() [L707] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) [L19] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 160 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.2s, OverallIterations: 1, TraceHistogramMax: 98, 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=160occurred 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: 0.1s SsaConstructionTime, 8.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 351 NumberOfCodeBlocks, 351 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-12-02 15:55:08,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-50.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e26bc3348a806ff5be59d4e299270ec94a7d4962bb4f1a8d7ce9c935e106e68d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:55:10,468 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:55:10,549 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 15:55:10,555 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:55:10,556 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:55:10,583 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:55:10,584 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:55:10,585 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:55:10,585 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:55:10,586 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:55:10,587 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:55:10,587 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:55:10,588 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:55:10,588 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:55:10,589 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:55:10,589 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:55:10,590 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:55:10,591 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:55:10,591 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 15:55:10,592 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 15:55:10,592 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:55:10,593 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:55:10,593 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:55:10,594 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:55:10,594 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 15:55:10,595 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 15:55:10,595 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 15:55:10,595 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 15:55:10,596 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:55:10,596 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:55:10,597 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:55:10,597 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 15:55:10,597 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:55:10,598 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:55:10,598 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:55:10,598 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:55:10,598 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:55:10,598 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:55:10,599 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 15:55:10,599 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 15:55:10,599 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:55:10,600 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:55:10,600 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:55:10,600 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:55:10,600 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_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e26bc3348a806ff5be59d4e299270ec94a7d4962bb4f1a8d7ce9c935e106e68d [2023-12-02 15:55:10,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:55:10,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:55:10,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:55:10,907 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:55:10,908 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:55:10,909 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-50.i [2023-12-02 15:55:13,690 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:55:13,958 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:55:13,958 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-50.i [2023-12-02 15:55:13,974 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/data/f893dc316/dcc164ee0b8a4ace9ac17682b1206fe6/FLAGd5ea49b7f [2023-12-02 15:55:13,987 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/data/f893dc316/dcc164ee0b8a4ace9ac17682b1206fe6 [2023-12-02 15:55:13,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:55:13,991 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:55:13,992 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:55:13,992 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:55:13,998 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:55:13,999 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:55:13" (1/1) ... [2023-12-02 15:55:14,000 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7eaaf3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:55:13, skipping insertion in model container [2023-12-02 15:55:14,000 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:55:13" (1/1) ... [2023-12-02 15:55:14,058 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:55:14,214 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_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-50.i[916,929] [2023-12-02 15:55:14,365 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:55:14,386 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:55:14,399 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_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-50.i[916,929] [2023-12-02 15:55:14,489 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:55:14,512 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:55:14,512 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:55:14 WrapperNode [2023-12-02 15:55:14,512 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:55:14,513 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:55:14,514 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:55:14,514 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:55:14,528 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:55:14" (1/1) ... [2023-12-02 15:55:14,562 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:55:14" (1/1) ... [2023-12-02 15:55:14,609 INFO L138 Inliner]: procedures = 27, calls = 111, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 650 [2023-12-02 15:55:14,609 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:55:14,610 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:55:14,610 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:55:14,611 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:55:14,620 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:55:14" (1/1) ... [2023-12-02 15:55:14,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:55:14" (1/1) ... [2023-12-02 15:55:14,630 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:55:14" (1/1) ... [2023-12-02 15:55:14,631 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:55:14" (1/1) ... [2023-12-02 15:55:14,663 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:55:14" (1/1) ... [2023-12-02 15:55:14,673 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:55:14" (1/1) ... [2023-12-02 15:55:14,681 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:55:14" (1/1) ... [2023-12-02 15:55:14,687 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:55:14" (1/1) ... [2023-12-02 15:55:14,696 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:55:14,697 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:55:14,697 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:55:14,697 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:55:14,698 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:55:14" (1/1) ... [2023-12-02 15:55:14,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:55:14,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:55:14,727 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:55:14,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:55:14,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:55:14,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 15:55:14,763 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 15:55:14,763 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 15:55:14,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:55:14,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:55:14,901 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:55:14,904 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:55:29,683 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:55:29,749 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:55:29,750 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 15:55:29,751 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:55:29 BoogieIcfgContainer [2023-12-02 15:55:29,751 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:55:29,754 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:55:29,755 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:55:29,758 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:55:29,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:55:13" (1/3) ... [2023-12-02 15:55:29,759 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1286dfe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:55:29, skipping insertion in model container [2023-12-02 15:55:29,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:55:14" (2/3) ... [2023-12-02 15:55:29,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1286dfe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:55:29, skipping insertion in model container [2023-12-02 15:55:29,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:55:29" (3/3) ... [2023-12-02 15:55:29,762 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-50.i [2023-12-02 15:55:29,781 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:55:29,782 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 15:55:29,843 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:55:29,849 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;@5ba5914e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:55:29,850 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 15:55:29,856 INFO L276 IsEmpty]: Start isEmpty. Operand has 279 states, 178 states have (on average 1.6235955056179776) internal successors, (289), 179 states have internal predecessors, (289), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-02 15:55:29,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2023-12-02 15:55:29,901 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:55:29,902 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:55:29,903 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:55:29,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:55:29,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1964318573, now seen corresponding path program 1 times [2023-12-02 15:55:29,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:55:29,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1465326224] [2023-12-02 15:55:29,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:55:29,930 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:55:29,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:55:29,933 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:55:29,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-02 15:55:32,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:55:32,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 15:55:32,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:55:32,424 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 3042 proven. 0 refuted. 0 times theorem prover too weak. 15970 trivial. 0 not checked. [2023-12-02 15:55:32,425 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:55:32,426 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:55:32,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1465326224] [2023-12-02 15:55:32,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1465326224] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:55:32,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:55:32,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:55:32,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144026035] [2023-12-02 15:55:32,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:55:32,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 15:55:32,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:55:32,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 15:55:32,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:55:32,468 INFO L87 Difference]: Start difference. First operand has 279 states, 178 states have (on average 1.6235955056179776) internal successors, (289), 179 states have internal predecessors, (289), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2023-12-02 15:55:32,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:55:32,821 INFO L93 Difference]: Finished difference Result 555 states and 1066 transitions. [2023-12-02 15:55:32,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 15:55:32,832 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) Word has length 622 [2023-12-02 15:55:32,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:55:32,843 INFO L225 Difference]: With dead ends: 555 [2023-12-02 15:55:32,843 INFO L226 Difference]: Without dead ends: 277 [2023-12-02 15:55:32,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 621 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 15:55:32,854 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:55:32,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 475 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:55:32,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-12-02 15:55:32,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2023-12-02 15:55:32,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 177 states have (on average 1.5932203389830508) internal successors, (282), 177 states have internal predecessors, (282), 98 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 98 states have call predecessors, (98), 98 states have call successors, (98) [2023-12-02 15:55:32,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 478 transitions. [2023-12-02 15:55:32,953 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 478 transitions. Word has length 622 [2023-12-02 15:55:32,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:55:32,954 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 478 transitions. [2023-12-02 15:55:32,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 69.5) internal successors, (139), 2 states have internal predecessors, (139), 2 states have call successors, (98), 2 states have call predecessors, (98), 2 states have return successors, (98), 2 states have call predecessors, (98), 2 states have call successors, (98) [2023-12-02 15:55:32,954 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 478 transitions. [2023-12-02 15:55:32,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2023-12-02 15:55:32,976 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:55:32,976 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:55:33,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:55:33,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:55:33,177 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:55:33,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:55:33,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1659145953, now seen corresponding path program 1 times [2023-12-02 15:55:33,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:55:33,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760791240] [2023-12-02 15:55:33,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:55:33,181 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:55:33,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:55:33,182 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:55:33,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-02 15:55:35,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:55:35,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:55:35,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:55:35,497 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-02 15:55:35,497 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:55:35,498 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:55:35,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760791240] [2023-12-02 15:55:35,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [760791240] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:55:35,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:55:35,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:55:35,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411104090] [2023-12-02 15:55:35,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:55:35,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:55:35,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:55:35,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:55:35,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:55:35,506 INFO L87 Difference]: Start difference. First operand 277 states and 478 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-02 15:55:38,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:55:39,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:55:40,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:55:40,271 INFO L93 Difference]: Finished difference Result 826 states and 1427 transitions. [2023-12-02 15:55:40,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:55:40,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 622 [2023-12-02 15:55:40,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:55:40,282 INFO L225 Difference]: With dead ends: 826 [2023-12-02 15:55:40,283 INFO L226 Difference]: Without dead ends: 550 [2023-12-02 15:55:40,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 620 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:55:40,289 INFO L413 NwaCegarLoop]: 739 mSDtfsCounter, 456 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:55:40,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1201 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2023-12-02 15:55:40,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2023-12-02 15:55:40,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 548. [2023-12-02 15:55:40,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 349 states have (on average 1.5816618911174785) internal successors, (552), 349 states have internal predecessors, (552), 196 states have call successors, (196), 2 states have call predecessors, (196), 2 states have return successors, (196), 196 states have call predecessors, (196), 196 states have call successors, (196) [2023-12-02 15:55:40,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 944 transitions. [2023-12-02 15:55:40,382 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 944 transitions. Word has length 622 [2023-12-02 15:55:40,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:55:40,385 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 944 transitions. [2023-12-02 15:55:40,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-02 15:55:40,386 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 944 transitions. [2023-12-02 15:55:40,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2023-12-02 15:55:40,393 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:55:40,394 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:55:40,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-02 15:55:40,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:55:40,595 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:55:40,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:55:40,596 INFO L85 PathProgramCache]: Analyzing trace with hash -70798051, now seen corresponding path program 1 times [2023-12-02 15:55:40,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:55:40,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520536394] [2023-12-02 15:55:40,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:55:40,597 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:55:40,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:55:40,598 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:55:40,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-02 15:55:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:55:43,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:55:43,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:55:48,932 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-02 15:55:48,933 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:55:48,933 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:55:48,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [520536394] [2023-12-02 15:55:48,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [520536394] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:55:48,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:55:48,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:55:48,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552100486] [2023-12-02 15:55:48,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:55:48,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:55:48,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:55:48,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:55:48,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:55:48,939 INFO L87 Difference]: Start difference. First operand 548 states and 944 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-02 15:55:51,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:55:53,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:55:53,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:55:53,420 INFO L93 Difference]: Finished difference Result 1099 states and 1892 transitions. [2023-12-02 15:55:53,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:55:53,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 622 [2023-12-02 15:55:53,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:55:53,429 INFO L225 Difference]: With dead ends: 1099 [2023-12-02 15:55:53,429 INFO L226 Difference]: Without dead ends: 552 [2023-12-02 15:55:53,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 620 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:55:53,432 INFO L413 NwaCegarLoop]: 659 mSDtfsCounter, 162 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:55:53,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 1116 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2023-12-02 15:55:53,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2023-12-02 15:55:53,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 550. [2023-12-02 15:55:53,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 351 states have (on average 1.5754985754985755) internal successors, (553), 351 states have internal predecessors, (553), 196 states have call successors, (196), 2 states have call predecessors, (196), 2 states have return successors, (196), 196 states have call predecessors, (196), 196 states have call successors, (196) [2023-12-02 15:55:53,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 945 transitions. [2023-12-02 15:55:53,497 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 945 transitions. Word has length 622 [2023-12-02 15:55:53,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:55:53,499 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 945 transitions. [2023-12-02 15:55:53,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-02 15:55:53,499 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 945 transitions. [2023-12-02 15:55:53,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2023-12-02 15:55:53,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:55:53,505 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:55:53,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-02 15:55:53,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:55:53,706 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:55:53,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:55:53,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1104156313, now seen corresponding path program 1 times [2023-12-02 15:55:53,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:55:53,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737086176] [2023-12-02 15:55:53,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:55:53,707 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:55:53,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:55:53,708 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:55:53,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-02 15:55:55,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:55:55,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 1019 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:55:55,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:56:00,068 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9051 proven. 180 refuted. 0 times theorem prover too weak. 9781 trivial. 0 not checked. [2023-12-02 15:56:00,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:56:02,037 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 111 proven. 180 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-12-02 15:56:02,037 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:56:02,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737086176] [2023-12-02 15:56:02,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [737086176] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:56:02,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [469554683] [2023-12-02 15:56:02,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:56:02,038 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:56:02,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:56:02,045 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:56:02,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-02 15:56:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:56:03,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 1019 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:56:03,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:56:03,730 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-02 15:56:03,730 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:56:03,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [469554683] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:56:03,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:56:03,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 6] total 9 [2023-12-02 15:56:03,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386379129] [2023-12-02 15:56:03,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:56:03,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:56:03,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:56:03,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:56:03,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:56:03,735 INFO L87 Difference]: Start difference. First operand 550 states and 945 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-02 15:56:04,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:56:04,188 INFO L93 Difference]: Finished difference Result 1648 states and 2833 transitions. [2023-12-02 15:56:04,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:56:04,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 623 [2023-12-02 15:56:04,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:56:04,201 INFO L225 Difference]: With dead ends: 1648 [2023-12-02 15:56:04,201 INFO L226 Difference]: Without dead ends: 1099 [2023-12-02 15:56:04,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1866 GetRequests, 1858 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:56:04,205 INFO L413 NwaCegarLoop]: 899 mSDtfsCounter, 473 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:56:04,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 1370 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:56:04,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2023-12-02 15:56:04,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 554. [2023-12-02 15:56:04,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 355 states have (on average 1.5690140845070422) internal successors, (557), 355 states have internal predecessors, (557), 196 states have call successors, (196), 2 states have call predecessors, (196), 2 states have return successors, (196), 196 states have call predecessors, (196), 196 states have call successors, (196) [2023-12-02 15:56:04,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 949 transitions. [2023-12-02 15:56:04,368 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 949 transitions. Word has length 623 [2023-12-02 15:56:04,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:56:04,370 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 949 transitions. [2023-12-02 15:56:04,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-02 15:56:04,371 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 949 transitions. [2023-12-02 15:56:04,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2023-12-02 15:56:04,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:56:04,377 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:56:04,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-02 15:56:04,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2023-12-02 15:56:04,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 15:56:04,779 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:56:04,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:56:04,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1244704923, now seen corresponding path program 1 times [2023-12-02 15:56:04,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:56:04,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1909293919] [2023-12-02 15:56:04,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:56:04,781 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:56:04,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:56:04,782 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:56:04,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-02 15:56:06,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:56:07,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:56:07,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:56:10,746 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9051 proven. 180 refuted. 0 times theorem prover too weak. 9781 trivial. 0 not checked. [2023-12-02 15:56:10,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:56:12,638 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 111 proven. 180 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-12-02 15:56:12,638 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:56:12,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1909293919] [2023-12-02 15:56:12,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1909293919] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:56:12,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [865198884] [2023-12-02 15:56:12,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:56:12,639 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:56:12,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:56:12,640 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:56:12,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-02 15:56:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:56:14,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:56:14,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:56:14,553 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-02 15:56:14,554 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:56:14,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [865198884] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:56:14,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:56:14,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 6] total 9 [2023-12-02 15:56:14,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927566408] [2023-12-02 15:56:14,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:56:14,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:56:14,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:56:14,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:56:14,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:56:14,560 INFO L87 Difference]: Start difference. First operand 554 states and 949 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-02 15:56:16,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:56:16,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:56:16,971 INFO L93 Difference]: Finished difference Result 1309 states and 2220 transitions. [2023-12-02 15:56:16,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:56:16,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 623 [2023-12-02 15:56:16,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:56:16,979 INFO L225 Difference]: With dead ends: 1309 [2023-12-02 15:56:16,979 INFO L226 Difference]: Without dead ends: 756 [2023-12-02 15:56:16,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1866 GetRequests, 1858 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:56:16,983 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 162 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:56:16,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 940 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2023-12-02 15:56:16,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2023-12-02 15:56:17,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 752. [2023-12-02 15:56:17,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 463 states have (on average 1.509719222462203) internal successors, (699), 465 states have internal predecessors, (699), 284 states have call successors, (284), 4 states have call predecessors, (284), 4 states have return successors, (284), 282 states have call predecessors, (284), 284 states have call successors, (284) [2023-12-02 15:56:17,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1267 transitions. [2023-12-02 15:56:17,118 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1267 transitions. Word has length 623 [2023-12-02 15:56:17,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:56:17,120 INFO L495 AbstractCegarLoop]: Abstraction has 752 states and 1267 transitions. [2023-12-02 15:56:17,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-02 15:56:17,121 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1267 transitions. [2023-12-02 15:56:17,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2023-12-02 15:56:17,127 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:56:17,128 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:56:17,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-02 15:56:17,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2023-12-02 15:56:17,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 15:56:17,542 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:56:17,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:56:17,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1378718429, now seen corresponding path program 1 times [2023-12-02 15:56:17,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:56:17,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1736465164] [2023-12-02 15:56:17,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:56:17,544 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:56:17,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:56:17,545 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:56:17,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-02 15:56:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:56:19,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 1019 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:56:19,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:56:23,837 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9051 proven. 180 refuted. 0 times theorem prover too weak. 9781 trivial. 0 not checked. [2023-12-02 15:56:23,838 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:56:25,873 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 111 proven. 180 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-12-02 15:56:25,873 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:56:25,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1736465164] [2023-12-02 15:56:25,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1736465164] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:56:25,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1577979694] [2023-12-02 15:56:25,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:56:25,874 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:56:25,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:56:25,875 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:56:25,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-02 15:56:27,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:56:27,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 1019 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:56:27,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:56:27,589 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-02 15:56:27,590 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:56:27,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1577979694] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:56:27,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:56:27,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 6] total 9 [2023-12-02 15:56:27,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810191837] [2023-12-02 15:56:27,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:56:27,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:56:27,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:56:27,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:56:27,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:56:27,594 INFO L87 Difference]: Start difference. First operand 752 states and 1267 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-02 15:56:29,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:56:30,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:56:30,005 INFO L93 Difference]: Finished difference Result 1923 states and 3232 transitions. [2023-12-02 15:56:30,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:56:30,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 623 [2023-12-02 15:56:30,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:56:30,018 INFO L225 Difference]: With dead ends: 1923 [2023-12-02 15:56:30,018 INFO L226 Difference]: Without dead ends: 1172 [2023-12-02 15:56:30,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1866 GetRequests, 1858 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:56:30,023 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 181 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:56:30,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 1026 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2023-12-02 15:56:30,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2023-12-02 15:56:30,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1166. [2023-12-02 15:56:30,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 737 states have (on average 1.5156037991858888) internal successors, (1117), 743 states have internal predecessors, (1117), 420 states have call successors, (420), 8 states have call predecessors, (420), 8 states have return successors, (420), 414 states have call predecessors, (420), 420 states have call successors, (420) [2023-12-02 15:56:30,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1957 transitions. [2023-12-02 15:56:30,212 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1957 transitions. Word has length 623 [2023-12-02 15:56:30,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:56:30,213 INFO L495 AbstractCegarLoop]: Abstraction has 1166 states and 1957 transitions. [2023-12-02 15:56:30,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-02 15:56:30,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1957 transitions. [2023-12-02 15:56:30,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2023-12-02 15:56:30,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:56:30,220 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:56:30,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2023-12-02 15:56:30,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-02 15:56:30,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:56:30,621 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:56:30,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:56:30,621 INFO L85 PathProgramCache]: Analyzing trace with hash 98854751, now seen corresponding path program 1 times [2023-12-02 15:56:30,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:56:30,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [190419130] [2023-12-02 15:56:30,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:56:30,623 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:56:30,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:56:30,623 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:56:30,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-02 15:56:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:56:32,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:56:32,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:56:36,184 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9051 proven. 180 refuted. 0 times theorem prover too weak. 9781 trivial. 0 not checked. [2023-12-02 15:56:36,184 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:56:37,916 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 111 proven. 180 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-12-02 15:56:37,916 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:56:37,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [190419130] [2023-12-02 15:56:37,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [190419130] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:56:37,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [675977102] [2023-12-02 15:56:37,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:56:37,922 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:56:37,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:56:37,923 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:56:37,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2023-12-02 15:56:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:56:39,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:56:39,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:56:41,145 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-02 15:56:41,145 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:56:41,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [675977102] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:56:41,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:56:41,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 6] total 10 [2023-12-02 15:56:41,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324888071] [2023-12-02 15:56:41,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:56:41,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:56:41,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:56:41,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:56:41,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-02 15:56:41,148 INFO L87 Difference]: Start difference. First operand 1166 states and 1957 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-02 15:56:45,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:56:46,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:56:46,090 INFO L93 Difference]: Finished difference Result 2604 states and 4352 transitions. [2023-12-02 15:56:46,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:56:46,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 623 [2023-12-02 15:56:46,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:56:46,104 INFO L225 Difference]: With dead ends: 2604 [2023-12-02 15:56:46,105 INFO L226 Difference]: Without dead ends: 1439 [2023-12-02 15:56:46,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1868 GetRequests, 1858 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-12-02 15:56:46,110 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 636 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:56:46,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 1471 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-12-02 15:56:46,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2023-12-02 15:56:46,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 994. [2023-12-02 15:56:46,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 994 states, 701 states have (on average 1.5962910128388017) internal successors, (1119), 703 states have internal predecessors, (1119), 284 states have call successors, (284), 8 states have call predecessors, (284), 8 states have return successors, (284), 282 states have call predecessors, (284), 284 states have call successors, (284) [2023-12-02 15:56:46,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994 states to 994 states and 1687 transitions. [2023-12-02 15:56:46,250 INFO L78 Accepts]: Start accepts. Automaton has 994 states and 1687 transitions. Word has length 623 [2023-12-02 15:56:46,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:56:46,251 INFO L495 AbstractCegarLoop]: Abstraction has 994 states and 1687 transitions. [2023-12-02 15:56:46,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-02 15:56:46,251 INFO L276 IsEmpty]: Start isEmpty. Operand 994 states and 1687 transitions. [2023-12-02 15:56:46,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2023-12-02 15:56:46,257 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:56:46,258 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:56:46,301 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-12-02 15:56:46,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2023-12-02 15:56:46,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 15:56:46,662 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:56:46,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:56:46,662 INFO L85 PathProgramCache]: Analyzing trace with hash 110229630, now seen corresponding path program 1 times [2023-12-02 15:56:46,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:56:46,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2026852658] [2023-12-02 15:56:46,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:56:46,663 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:56:46,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:56:46,664 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:56:46,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-02 15:56:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:56:48,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 15:56:48,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:56:52,709 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 7711 proven. 210 refuted. 0 times theorem prover too weak. 11091 trivial. 0 not checked. [2023-12-02 15:56:52,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:56:53,320 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-02 15:56:53,321 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:56:53,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2026852658] [2023-12-02 15:56:53,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2026852658] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 15:56:53,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:56:53,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-12-02 15:56:53,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73382067] [2023-12-02 15:56:53,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:56:53,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:56:53,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:56:53,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:56:53,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 15:56:53,324 INFO L87 Difference]: Start difference. First operand 994 states and 1687 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-02 15:56:54,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:56:54,731 INFO L93 Difference]: Finished difference Result 2970 states and 5039 transitions. [2023-12-02 15:56:54,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:56:54,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 624 [2023-12-02 15:56:54,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:56:54,745 INFO L225 Difference]: With dead ends: 2970 [2023-12-02 15:56:54,745 INFO L226 Difference]: Without dead ends: 1977 [2023-12-02 15:56:54,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1246 GetRequests, 1240 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 15:56:54,748 INFO L413 NwaCegarLoop]: 769 mSDtfsCounter, 466 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:56:54,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 1227 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 15:56:54,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2023-12-02 15:56:54,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1975. [2023-12-02 15:56:54,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1975 states, 1390 states have (on average 1.5863309352517985) internal successors, (2205), 1394 states have internal predecessors, (2205), 568 states have call successors, (568), 16 states have call predecessors, (568), 16 states have return successors, (568), 564 states have call predecessors, (568), 568 states have call successors, (568) [2023-12-02 15:56:54,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 3341 transitions. [2023-12-02 15:56:54,987 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 3341 transitions. Word has length 624 [2023-12-02 15:56:54,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:56:54,988 INFO L495 AbstractCegarLoop]: Abstraction has 1975 states and 3341 transitions. [2023-12-02 15:56:54,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-02 15:56:54,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 3341 transitions. [2023-12-02 15:56:54,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2023-12-02 15:56:54,995 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:56:54,995 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:56:55,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-02 15:56:55,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:56:55,196 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:56:55,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:56:55,197 INFO L85 PathProgramCache]: Analyzing trace with hash 312053564, now seen corresponding path program 1 times [2023-12-02 15:56:55,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:56:55,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1698253248] [2023-12-02 15:56:55,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:56:55,198 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:56:55,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:56:55,199 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:56:55,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-02 15:56:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:56:57,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 15:56:57,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:57:10,898 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 12151 proven. 342 refuted. 0 times theorem prover too weak. 6519 trivial. 0 not checked. [2023-12-02 15:57:10,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:57:14,954 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:57:14,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1698253248] [2023-12-02 15:57:14,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1698253248] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:57:14,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1778297487] [2023-12-02 15:57:14,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:57:14,954 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:57:14,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:57:14,957 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:57:14,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2023-12-02 15:57:18,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:57:19,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 15:57:19,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:57:27,107 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-02 15:57:27,107 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:57:27,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1778297487] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:57:27,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:57:27,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-12-02 15:57:27,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984710574] [2023-12-02 15:57:27,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:57:27,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 15:57:27,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:57:27,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 15:57:27,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2023-12-02 15:57:27,110 INFO L87 Difference]: Start difference. First operand 1975 states and 3341 transitions. Second operand has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 10 states have internal predecessors, (137), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-02 15:57:46,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 15:57:52,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:58:58,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:58:58,415 INFO L93 Difference]: Finished difference Result 28431 states and 47643 transitions. [2023-12-02 15:58:58,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-02 15:58:58,416 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 10 states have internal predecessors, (137), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 624 [2023-12-02 15:58:58,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:58:58,529 INFO L225 Difference]: With dead ends: 28431 [2023-12-02 15:58:58,530 INFO L226 Difference]: Without dead ends: 26457 [2023-12-02 15:58:58,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1354 GetRequests, 1305 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=439, Invalid=2111, Unknown=0, NotChecked=0, Total=2550 [2023-12-02 15:58:58,539 INFO L413 NwaCegarLoop]: 970 mSDtfsCounter, 5822 mSDsluCounter, 5758 mSDsCounter, 0 mSdLazyCounter, 4611 mSolverCounterSat, 1505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 75.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5822 SdHoareTripleChecker+Valid, 6728 SdHoareTripleChecker+Invalid, 6116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1505 IncrementalHoareTripleChecker+Valid, 4611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:58:58,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5822 Valid, 6728 Invalid, 6116 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1505 Valid, 4611 Invalid, 0 Unknown, 0 Unchecked, 79.3s Time] [2023-12-02 15:58:58,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26457 states. [2023-12-02 15:59:01,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26457 to 13259. [2023-12-02 15:59:01,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13259 states, 10074 states have (on average 1.6331149493746278) internal successors, (16452), 10122 states have internal predecessors, (16452), 3072 states have call successors, (3072), 112 states have call predecessors, (3072), 112 states have return successors, (3072), 3024 states have call predecessors, (3072), 3072 states have call successors, (3072) [2023-12-02 15:59:01,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13259 states to 13259 states and 22596 transitions. [2023-12-02 15:59:01,342 INFO L78 Accepts]: Start accepts. Automaton has 13259 states and 22596 transitions. Word has length 624 [2023-12-02 15:59:01,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:59:01,343 INFO L495 AbstractCegarLoop]: Abstraction has 13259 states and 22596 transitions. [2023-12-02 15:59:01,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.454545454545455) internal successors, (137), 10 states have internal predecessors, (137), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-02 15:59:01,345 INFO L276 IsEmpty]: Start isEmpty. Operand 13259 states and 22596 transitions. [2023-12-02 15:59:01,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2023-12-02 15:59:01,360 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:59:01,361 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:59:01,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-12-02 15:59:01,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2023-12-02 15:59:01,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 15:59:01,762 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:59:01,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:59:01,763 INFO L85 PathProgramCache]: Analyzing trace with hash -41034818, now seen corresponding path program 1 times [2023-12-02 15:59:01,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:59:01,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715680462] [2023-12-02 15:59:01,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:59:01,765 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:59:01,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:59:01,767 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:59:01,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-02 15:59:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:59:03,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:59:03,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:59:04,801 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 4911 proven. 42 refuted. 0 times theorem prover too weak. 14059 trivial. 0 not checked. [2023-12-02 15:59:04,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:59:05,628 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 249 proven. 42 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-12-02 15:59:05,628 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:59:05,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [715680462] [2023-12-02 15:59:05,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [715680462] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:59:05,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [671212501] [2023-12-02 15:59:05,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:59:05,628 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:59:05,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:59:05,629 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:59:05,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-12-02 15:59:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:59:09,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:59:09,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:59:10,228 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-02 15:59:10,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:59:10,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [671212501] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:59:10,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:59:10,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2023-12-02 15:59:10,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196698100] [2023-12-02 15:59:10,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:59:10,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 15:59:10,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:59:10,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 15:59:10,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-02 15:59:10,233 INFO L87 Difference]: Start difference. First operand 13259 states and 22596 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-02 15:59:25,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:59:25,381 INFO L93 Difference]: Finished difference Result 67221 states and 113664 transitions. [2023-12-02 15:59:25,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 15:59:25,382 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 624 [2023-12-02 15:59:25,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:59:25,531 INFO L225 Difference]: With dead ends: 67221 [2023-12-02 15:59:25,531 INFO L226 Difference]: Without dead ends: 53963 [2023-12-02 15:59:25,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1877 GetRequests, 1864 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-02 15:59:25,574 INFO L413 NwaCegarLoop]: 942 mSDtfsCounter, 1629 mSDsluCounter, 1756 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1629 SdHoareTripleChecker+Valid, 2698 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:59:25,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1629 Valid, 2698 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2023-12-02 15:59:25,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53963 states. [2023-12-02 15:59:29,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53963 to 31081. [2023-12-02 15:59:29,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31081 states, 23888 states have (on average 1.627093101138647) internal successors, (38868), 24052 states have internal predecessors, (38868), 6904 states have call successors, (6904), 288 states have call predecessors, (6904), 288 states have return successors, (6904), 6740 states have call predecessors, (6904), 6904 states have call successors, (6904) [2023-12-02 15:59:29,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31081 states to 31081 states and 52676 transitions. [2023-12-02 15:59:29,849 INFO L78 Accepts]: Start accepts. Automaton has 31081 states and 52676 transitions. Word has length 624 [2023-12-02 15:59:29,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:59:29,849 INFO L495 AbstractCegarLoop]: Abstraction has 31081 states and 52676 transitions. [2023-12-02 15:59:29,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-02 15:59:29,850 INFO L276 IsEmpty]: Start isEmpty. Operand 31081 states and 52676 transitions. [2023-12-02 15:59:29,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2023-12-02 15:59:29,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:59:29,866 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:59:29,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-12-02 15:59:30,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2023-12-02 15:59:30,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 15:59:30,267 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:59:30,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:59:30,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1898127228, now seen corresponding path program 1 times [2023-12-02 15:59:30,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:59:30,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358500538] [2023-12-02 15:59:30,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:59:30,270 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:59:30,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:59:30,270 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:59:30,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-02 15:59:32,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:59:32,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:59:32,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:59:33,230 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 4911 proven. 42 refuted. 0 times theorem prover too weak. 14059 trivial. 0 not checked. [2023-12-02 15:59:33,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:59:34,107 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 249 proven. 42 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-12-02 15:59:34,108 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:59:34,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358500538] [2023-12-02 15:59:34,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358500538] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:59:34,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1045794753] [2023-12-02 15:59:34,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:59:34,108 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:59:34,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:59:34,109 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:59:34,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2023-12-02 15:59:38,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:59:38,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:59:38,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:59:38,622 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-02 15:59:38,622 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:59:38,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1045794753] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:59:38,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 15:59:38,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 9 [2023-12-02 15:59:38,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100690191] [2023-12-02 15:59:38,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:59:38,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:59:38,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:59:38,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:59:38,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-02 15:59:38,627 INFO L87 Difference]: Start difference. First operand 31081 states and 52676 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-02 15:59:42,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:59:42,605 INFO L93 Difference]: Finished difference Result 70980 states and 121174 transitions. [2023-12-02 15:59:42,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:59:42,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 624 [2023-12-02 15:59:42,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:59:42,684 INFO L225 Difference]: With dead ends: 70980 [2023-12-02 15:59:42,684 INFO L226 Difference]: Without dead ends: 39900 [2023-12-02 15:59:42,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1870 GetRequests, 1861 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-02 15:59:42,730 INFO L413 NwaCegarLoop]: 929 mSDtfsCounter, 480 mSDsluCounter, 1377 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 2306 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:59:42,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 2306 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 15:59:42,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39900 states. [2023-12-02 15:59:46,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39900 to 31248. [2023-12-02 15:59:46,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31248 states, 23953 states have (on average 1.617876675155513) internal successors, (38753), 24118 states have internal predecessors, (38753), 7002 states have call successors, (7002), 292 states have call predecessors, (7002), 292 states have return successors, (7002), 6837 states have call predecessors, (7002), 7002 states have call successors, (7002) [2023-12-02 15:59:47,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31248 states to 31248 states and 52757 transitions. [2023-12-02 15:59:47,009 INFO L78 Accepts]: Start accepts. Automaton has 31248 states and 52757 transitions. Word has length 624 [2023-12-02 15:59:47,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:59:47,010 INFO L495 AbstractCegarLoop]: Abstraction has 31248 states and 52757 transitions. [2023-12-02 15:59:47,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-02 15:59:47,010 INFO L276 IsEmpty]: Start isEmpty. Operand 31248 states and 52757 transitions. [2023-12-02 15:59:47,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2023-12-02 15:59:47,025 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:59:47,025 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:59:47,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2023-12-02 15:59:47,268 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-12-02 15:59:47,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:59:47,426 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 15:59:47,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:59:47,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1955385530, now seen corresponding path program 1 times [2023-12-02 15:59:47,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:59:47,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [821752157] [2023-12-02 15:59:47,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:59:47,428 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 15:59:47,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:59:47,429 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 15:59:47,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-02 15:59:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:59:49,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:59:49,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:59:50,467 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 4911 proven. 42 refuted. 0 times theorem prover too weak. 14059 trivial. 0 not checked. [2023-12-02 15:59:50,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:59:51,357 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 249 proven. 42 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-12-02 15:59:51,357 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:59:51,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [821752157] [2023-12-02 15:59:51,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [821752157] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:59:51,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1549081916] [2023-12-02 15:59:51,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:59:51,358 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:59:51,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:59:51,359 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:59:51,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2023-12-02 15:59:56,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:59:56,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 15:59:56,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:00:00,004 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-02 16:00:00,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:00:00,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1549081916] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:00:00,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:00:00,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 5] total 11 [2023-12-02 16:00:00,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149452463] [2023-12-02 16:00:00,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:00:00,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:00:00,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:00:00,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:00:00,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-02 16:00:00,007 INFO L87 Difference]: Start difference. First operand 31248 states and 52757 transitions. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-02 16:00:23,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:00:34,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:00:34,893 INFO L93 Difference]: Finished difference Result 117664 states and 198623 transitions. [2023-12-02 16:00:34,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 16:00:34,895 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 624 [2023-12-02 16:00:34,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:00:35,044 INFO L225 Difference]: With dead ends: 117664 [2023-12-02 16:00:35,044 INFO L226 Difference]: Without dead ends: 86584 [2023-12-02 16:00:35,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1877 GetRequests, 1863 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-12-02 16:00:35,088 INFO L413 NwaCegarLoop]: 1110 mSDtfsCounter, 1807 mSDsluCounter, 2917 mSDsCounter, 0 mSdLazyCounter, 977 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1807 SdHoareTripleChecker+Valid, 4027 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:00:35,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1807 Valid, 4027 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 977 Invalid, 0 Unknown, 0 Unchecked, 22.1s Time] [2023-12-02 16:00:35,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86584 states. [2023-12-02 16:00:42,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86584 to 48449. [2023-12-02 16:00:42,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48449 states, 37585 states have (on average 1.6295862711187974) internal successors, (61248), 37830 states have internal predecessors, (61248), 10402 states have call successors, (10402), 461 states have call predecessors, (10402), 461 states have return successors, (10402), 10157 states have call predecessors, (10402), 10402 states have call successors, (10402) [2023-12-02 16:00:42,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48449 states to 48449 states and 82052 transitions. [2023-12-02 16:00:42,673 INFO L78 Accepts]: Start accepts. Automaton has 48449 states and 82052 transitions. Word has length 624 [2023-12-02 16:00:42,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:00:42,673 INFO L495 AbstractCegarLoop]: Abstraction has 48449 states and 82052 transitions. [2023-12-02 16:00:42,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-02 16:00:42,674 INFO L276 IsEmpty]: Start isEmpty. Operand 48449 states and 82052 transitions. [2023-12-02 16:00:42,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2023-12-02 16:00:42,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:00:42,694 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:00:42,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2023-12-02 16:00:42,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-12-02 16:00:43,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:00:43,094 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:00:43,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:00:43,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1778881988, now seen corresponding path program 1 times [2023-12-02 16:00:43,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:00:43,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92467192] [2023-12-02 16:00:43,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:00:43,096 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:00:43,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:00:43,097 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:00:43,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-02 16:00:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:00:44,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 16:00:44,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:00:49,622 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-02 16:00:49,622 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:00:49,622 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:00:49,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92467192] [2023-12-02 16:00:49,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92467192] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:00:49,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:00:49,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:00:49,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482569114] [2023-12-02 16:00:49,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:00:49,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:00:49,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:00:49,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:00:49,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:00:49,626 INFO L87 Difference]: Start difference. First operand 48449 states and 82052 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-02 16:00:57,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:00:57,235 INFO L93 Difference]: Finished difference Result 105485 states and 178687 transitions. [2023-12-02 16:00:57,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:00:57,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 624 [2023-12-02 16:00:57,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:00:57,344 INFO L225 Difference]: With dead ends: 105485 [2023-12-02 16:00:57,344 INFO L226 Difference]: Without dead ends: 57208 [2023-12-02 16:00:57,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 622 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:00:57,403 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 188 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:00:57,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 1024 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 16:00:57,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57208 states. [2023-12-02 16:01:06,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57208 to 57030. [2023-12-02 16:01:06,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57030 states, 43942 states have (on average 1.6247553593373083) internal successors, (71395), 44235 states have internal predecessors, (71395), 12546 states have call successors, (12546), 541 states have call predecessors, (12546), 541 states have return successors, (12546), 12253 states have call predecessors, (12546), 12546 states have call successors, (12546) [2023-12-02 16:01:06,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57030 states to 57030 states and 96487 transitions. [2023-12-02 16:01:06,328 INFO L78 Accepts]: Start accepts. Automaton has 57030 states and 96487 transitions. Word has length 624 [2023-12-02 16:01:06,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:01:06,329 INFO L495 AbstractCegarLoop]: Abstraction has 57030 states and 96487 transitions. [2023-12-02 16:01:06,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-02 16:01:06,329 INFO L276 IsEmpty]: Start isEmpty. Operand 57030 states and 96487 transitions. [2023-12-02 16:01:06,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2023-12-02 16:01:06,345 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:01:06,345 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:01:06,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-12-02 16:01:06,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:01:06,546 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:01:06,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:01:06,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1354837237, now seen corresponding path program 1 times [2023-12-02 16:01:06,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:01:06,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796738280] [2023-12-02 16:01:06,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:01:06,548 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:01:06,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:01:06,548 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:01:06,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-02 16:01:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:01:08,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:01:08,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:01:11,749 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9051 proven. 180 refuted. 0 times theorem prover too weak. 9781 trivial. 0 not checked. [2023-12-02 16:01:11,749 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:01:13,599 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 111 proven. 180 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-12-02 16:01:13,599 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:01:13,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796738280] [2023-12-02 16:01:13,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796738280] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:01:13,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1355529302] [2023-12-02 16:01:13,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:01:13,599 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:01:13,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:01:13,600 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:01:13,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2023-12-02 16:01:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:01:17,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 16:01:17,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:01:28,521 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-02 16:01:28,521 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:01:28,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1355529302] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:01:28,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:01:28,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 13 [2023-12-02 16:01:28,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638191353] [2023-12-02 16:01:28,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:01:28,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 16:01:28,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:01:28,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 16:01:28,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-12-02 16:01:28,525 INFO L87 Difference]: Start difference. First operand 57030 states and 96487 transitions. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 6 states have internal predecessors, (137), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-02 16:01:55,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:01:58,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:02:56,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:02:56,742 INFO L93 Difference]: Finished difference Result 294232 states and 495064 transitions. [2023-12-02 16:02:56,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 16:02:56,743 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 6 states have internal predecessors, (137), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 624 [2023-12-02 16:02:56,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:02:57,231 INFO L225 Difference]: With dead ends: 294232 [2023-12-02 16:02:57,231 INFO L226 Difference]: Without dead ends: 237374 [2023-12-02 16:02:57,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1876 GetRequests, 1857 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2023-12-02 16:02:57,332 INFO L413 NwaCegarLoop]: 658 mSDtfsCounter, 2922 mSDsluCounter, 2503 mSDsCounter, 0 mSdLazyCounter, 1987 mSolverCounterSat, 638 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2922 SdHoareTripleChecker+Valid, 3161 SdHoareTripleChecker+Invalid, 2625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 638 IncrementalHoareTripleChecker+Valid, 1987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:02:57,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2922 Valid, 3161 Invalid, 2625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [638 Valid, 1987 Invalid, 0 Unknown, 0 Unchecked, 54.4s Time] [2023-12-02 16:02:57,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237374 states. [2023-12-02 16:03:27,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237374 to 184230. [2023-12-02 16:03:27,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184230 states, 144105 states have (on average 1.626786024079664) internal successors, (234428), 145110 states have internal predecessors, (234428), 38302 states have call successors, (38302), 1822 states have call predecessors, (38302), 1822 states have return successors, (38302), 37297 states have call predecessors, (38302), 38302 states have call successors, (38302) [2023-12-02 16:03:28,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184230 states to 184230 states and 311032 transitions. [2023-12-02 16:03:28,609 INFO L78 Accepts]: Start accepts. Automaton has 184230 states and 311032 transitions. Word has length 624 [2023-12-02 16:03:28,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:03:28,609 INFO L495 AbstractCegarLoop]: Abstraction has 184230 states and 311032 transitions. [2023-12-02 16:03:28,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 6 states have internal predecessors, (137), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-02 16:03:28,610 INFO L276 IsEmpty]: Start isEmpty. Operand 184230 states and 311032 transitions. [2023-12-02 16:03:28,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2023-12-02 16:03:28,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:03:28,650 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:03:28,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2023-12-02 16:03:28,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2023-12-02 16:03:29,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 16:03:29,051 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:03:29,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:03:29,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1001748855, now seen corresponding path program 1 times [2023-12-02 16:03:29,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:03:29,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [458983465] [2023-12-02 16:03:29,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:03:29,053 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:03:29,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:03:29,054 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:03:29,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-02 16:03:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:03:30,954 INFO L262 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:03:30,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:03:34,395 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9051 proven. 180 refuted. 0 times theorem prover too weak. 9781 trivial. 0 not checked. [2023-12-02 16:03:34,395 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:03:36,087 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 111 proven. 180 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-12-02 16:03:36,087 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:03:36,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [458983465] [2023-12-02 16:03:36,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [458983465] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:03:36,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [373196028] [2023-12-02 16:03:36,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:03:36,088 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:03:36,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:03:36,088 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:03:36,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2023-12-02 16:03:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:03:42,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 16:03:42,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:03:42,623 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19012 trivial. 0 not checked. [2023-12-02 16:03:42,624 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:03:42,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [373196028] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:03:42,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:03:42,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 6] total 9 [2023-12-02 16:03:42,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387707351] [2023-12-02 16:03:42,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:03:42,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:03:42,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:03:42,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:03:42,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-02 16:03:42,626 INFO L87 Difference]: Start difference. First operand 184230 states and 311032 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-02 16:04:35,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:04:35,271 INFO L93 Difference]: Finished difference Result 528762 states and 890024 transitions. [2023-12-02 16:04:35,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:04:35,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) Word has length 624 [2023-12-02 16:04:35,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:04:36,408 INFO L225 Difference]: With dead ends: 528762 [2023-12-02 16:04:36,408 INFO L226 Difference]: Without dead ends: 344708 [2023-12-02 16:04:36,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1869 GetRequests, 1861 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-02 16:04:36,650 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 287 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 16:04:36,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 1146 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 16:04:36,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344708 states. [2023-12-02 16:05:32,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344708 to 344566. [2023-12-02 16:05:32,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344566 states, 268061 states have (on average 1.6138229731292504) internal successors, (432603), 270150 states have internal predecessors, (432603), 72866 states have call successors, (72866), 3638 states have call predecessors, (72866), 3638 states have return successors, (72866), 70777 states have call predecessors, (72866), 72866 states have call successors, (72866) [2023-12-02 16:05:34,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344566 states to 344566 states and 578335 transitions. [2023-12-02 16:05:34,461 INFO L78 Accepts]: Start accepts. Automaton has 344566 states and 578335 transitions. Word has length 624 [2023-12-02 16:05:34,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:05:34,462 INFO L495 AbstractCegarLoop]: Abstraction has 344566 states and 578335 transitions. [2023-12-02 16:05:34,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (98), 1 states have call predecessors, (98), 1 states have return successors, (98), 1 states have call predecessors, (98), 1 states have call successors, (98) [2023-12-02 16:05:34,462 INFO L276 IsEmpty]: Start isEmpty. Operand 344566 states and 578335 transitions. [2023-12-02 16:05:34,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2023-12-02 16:05:34,543 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:05:34,543 INFO L195 NwaCegarLoop]: trace histogram [98, 98, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:05:34,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2023-12-02 16:05:34,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2023-12-02 16:05:34,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:05:34,944 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:05:34,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:05:34,944 INFO L85 PathProgramCache]: Analyzing trace with hash 125729849, now seen corresponding path program 1 times [2023-12-02 16:05:34,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:05:34,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [706179045] [2023-12-02 16:05:34,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:05:34,946 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:05:34,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:05:34,946 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:05:34,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-02 16:05:36,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:05:36,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:05:36,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:05:40,388 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 9051 proven. 180 refuted. 0 times theorem prover too weak. 9781 trivial. 0 not checked. [2023-12-02 16:05:40,388 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:05:42,186 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 111 proven. 180 refuted. 0 times theorem prover too weak. 18721 trivial. 0 not checked. [2023-12-02 16:05:42,186 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:05:42,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [706179045] [2023-12-02 16:05:42,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [706179045] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:05:42,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1200289197] [2023-12-02 16:05:42,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:05:42,186 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:05:42,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:05:42,187 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:05:42,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7708bfa-3f38-4aec-b426-fd6dcda4c6a3/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2023-12-02 16:05:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:05:48,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 16:05:48,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:06:02,641 INFO L134 CoverageAnalysis]: Checked inductivity of 19012 backedges. 8767 proven. 750 refuted. 0 times theorem prover too weak. 9495 trivial. 0 not checked. [2023-12-02 16:06:02,642 INFO L327 TraceCheckSpWp]: Computing backward predicates...