./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-21.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_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-21.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 1cca72686861ad5f32c03321c83cb01c79fc9fe11e27ec52efe74f8c4ef5e302 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 20:08:14,725 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 20:08:14,790 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 20:08:14,794 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 20:08:14,795 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 20:08:14,820 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 20:08:14,820 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 20:08:14,821 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 20:08:14,822 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 20:08:14,822 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 20:08:14,823 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 20:08:14,823 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 20:08:14,824 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 20:08:14,824 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 20:08:14,825 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 20:08:14,825 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 20:08:14,825 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 20:08:14,826 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 20:08:14,826 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 20:08:14,827 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 20:08:14,827 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 20:08:14,828 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 20:08:14,829 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 20:08:14,829 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 20:08:14,830 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 20:08:14,830 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 20:08:14,830 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 20:08:14,831 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 20:08:14,831 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 20:08:14,831 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 20:08:14,832 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 20:08:14,832 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 20:08:14,832 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 20:08:14,833 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 20:08:14,833 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 20:08:14,833 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 20:08:14,833 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 20:08:14,833 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 20:08:14,834 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 20:08:14,834 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 20:08:14,834 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 20:08:14,834 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 20:08:14,835 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 20:08:14,835 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 20:08:14,835 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 20:08:14,835 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 20:08:14,835 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 20:08:14,835 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_52dcfd49-f60a-4932-9ab1-d9d079efd462/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1cca72686861ad5f32c03321c83cb01c79fc9fe11e27ec52efe74f8c4ef5e302 [2023-12-02 20:08:15,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 20:08:15,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 20:08:15,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 20:08:15,088 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 20:08:15,089 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 20:08:15,090 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-21.i [2023-12-02 20:08:17,834 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 20:08:18,012 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 20:08:18,012 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-21.i [2023-12-02 20:08:18,022 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/data/a04b0c53b/c8962fb6e4b54ced9ba5e98888246e14/FLAG6c30dc8e3 [2023-12-02 20:08:18,037 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/data/a04b0c53b/c8962fb6e4b54ced9ba5e98888246e14 [2023-12-02 20:08:18,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 20:08:18,042 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 20:08:18,043 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 20:08:18,043 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 20:08:18,049 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 20:08:18,050 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:08:18" (1/1) ... [2023-12-02 20:08:18,051 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46123150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:08:18, skipping insertion in model container [2023-12-02 20:08:18,051 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:08:18" (1/1) ... [2023-12-02 20:08:18,082 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 20:08:18,220 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_52dcfd49-f60a-4932-9ab1-d9d079efd462/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-21.i[916,929] [2023-12-02 20:08:18,268 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 20:08:18,281 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 20:08:18,291 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_52dcfd49-f60a-4932-9ab1-d9d079efd462/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-21.i[916,929] [2023-12-02 20:08:18,320 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 20:08:18,337 INFO L206 MainTranslator]: Completed translation [2023-12-02 20:08:18,337 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:08:18 WrapperNode [2023-12-02 20:08:18,338 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 20:08:18,339 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 20:08:18,339 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 20:08:18,339 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 20:08:18,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:08:18" (1/1) ... [2023-12-02 20:08:18,359 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:08:18" (1/1) ... [2023-12-02 20:08:18,399 INFO L138 Inliner]: procedures = 29, calls = 118, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 383 [2023-12-02 20:08:18,399 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 20:08:18,400 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 20:08:18,400 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 20:08:18,401 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 20:08:18,411 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:08:18" (1/1) ... [2023-12-02 20:08:18,411 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:08:18" (1/1) ... [2023-12-02 20:08:18,418 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:08:18" (1/1) ... [2023-12-02 20:08:18,418 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:08:18" (1/1) ... [2023-12-02 20:08:18,433 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:08:18" (1/1) ... [2023-12-02 20:08:18,439 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:08:18" (1/1) ... [2023-12-02 20:08:18,443 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:08:18" (1/1) ... [2023-12-02 20:08:18,446 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:08:18" (1/1) ... [2023-12-02 20:08:18,452 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 20:08:18,453 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 20:08:18,453 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 20:08:18,453 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 20:08:18,454 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:08:18" (1/1) ... [2023-12-02 20:08:18,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 20:08:18,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 20:08:18,495 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 20:08:18,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 20:08:18,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 20:08:18,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-12-02 20:08:18,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 20:08:18,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-12-02 20:08:18,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 20:08:18,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-12-02 20:08:18,535 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 20:08:18,535 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 20:08:18,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 20:08:18,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 20:08:18,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 20:08:18,645 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 20:08:18,647 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 20:08:19,032 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 20:08:19,446 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 20:08:19,446 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 20:08:19,448 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:08:19 BoogieIcfgContainer [2023-12-02 20:08:19,448 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 20:08:19,450 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 20:08:19,450 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 20:08:19,453 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 20:08:19,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:08:18" (1/3) ... [2023-12-02 20:08:19,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@385e43ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:08:19, skipping insertion in model container [2023-12-02 20:08:19,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:08:18" (2/3) ... [2023-12-02 20:08:19,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@385e43ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:08:19, skipping insertion in model container [2023-12-02 20:08:19,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:08:19" (3/3) ... [2023-12-02 20:08:19,456 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-21.i [2023-12-02 20:08:19,470 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 20:08:19,471 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 20:08:19,510 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 20:08:19,517 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;@4066eba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 20:08:19,518 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 20:08:19,521 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 20:08:19,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 20:08:19,528 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:08:19,529 INFO L195 NwaCegarLoop]: trace histogram [7, 1, 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 20:08:19,529 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:08:19,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:08:19,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1356662308, now seen corresponding path program 1 times [2023-12-02 20:08:19,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 20:08:19,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079604521] [2023-12-02 20:08:19,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:08:19,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 20:08:19,754 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 20:08:19,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1601381064] [2023-12-02 20:08:19,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:08:19,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 20:08:19,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 20:08:19,757 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 20:08:19,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 20:08:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 20:08:20,464 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 20:08:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 20:08:20,911 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 20:08:20,913 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 20:08:20,915 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 20:08:20,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 20:08:21,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-02 20:08:21,123 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 20:08:21,126 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 20:08:21,182 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short33 could not be translated [2023-12-02 20:08:21,183 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short29 could not be translated [2023-12-02 20:08:21,183 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem27 could not be translated [2023-12-02 20:08:21,183 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem30 could not be translated [2023-12-02 20:08:21,183 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short32 could not be translated [2023-12-02 20:08:21,184 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem28 could not be translated [2023-12-02 20:08:21,184 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem31 could not be translated [2023-12-02 20:08:21,185 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem28 could not be translated [2023-12-02 20:08:21,186 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short29 could not be translated [2023-12-02 20:08:21,186 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem30 could not be translated [2023-12-02 20:08:21,186 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short33 could not be translated [2023-12-02 20:08:21,186 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short32 could not be translated [2023-12-02 20:08:21,187 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem31 could not be translated [2023-12-02 20:08:21,187 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem27 could not be translated [2023-12-02 20:08:21,188 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short40 could not be translated [2023-12-02 20:08:21,188 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem36 could not be translated [2023-12-02 20:08:21,188 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem35 could not be translated [2023-12-02 20:08:21,188 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem38 could not be translated [2023-12-02 20:08:21,189 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem39 could not be translated [2023-12-02 20:08:21,189 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short41 could not be translated [2023-12-02 20:08:21,189 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short37 could not be translated [2023-12-02 20:08:21,190 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem36 could not be translated [2023-12-02 20:08:21,191 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short40 could not be translated [2023-12-02 20:08:21,191 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem39 could not be translated [2023-12-02 20:08:21,191 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short37 could not be translated [2023-12-02 20:08:21,191 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem38 could not be translated [2023-12-02 20:08:21,192 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short41 could not be translated [2023-12-02 20:08:21,192 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem35 could not be translated [2023-12-02 20:08:21,193 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short45 could not be translated [2023-12-02 20:08:21,193 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem44 could not be translated [2023-12-02 20:08:21,193 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem43 could not be translated [2023-12-02 20:08:21,194 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short48 could not be translated [2023-12-02 20:08:21,194 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem46 could not be translated [2023-12-02 20:08:21,194 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short49 could not be translated [2023-12-02 20:08:21,194 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem47 could not be translated [2023-12-02 20:08:21,195 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem43 could not be translated [2023-12-02 20:08:21,196 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem44 could not be translated [2023-12-02 20:08:21,196 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem47 could not be translated [2023-12-02 20:08:21,196 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short49 could not be translated [2023-12-02 20:08:21,196 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short45 could not be translated [2023-12-02 20:08:21,197 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short48 could not be translated [2023-12-02 20:08:21,197 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem46 could not be translated [2023-12-02 20:08:21,197 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem51 could not be translated [2023-12-02 20:08:21,199 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem51 could not be translated [2023-12-02 20:08:21,200 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem52 could not be translated [2023-12-02 20:08:21,201 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem52 could not be translated [2023-12-02 20:08:21,202 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short56 could not be translated [2023-12-02 20:08:21,202 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem57 could not be translated [2023-12-02 20:08:21,202 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short60 could not be translated [2023-12-02 20:08:21,202 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem55 could not be translated [2023-12-02 20:08:21,203 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short59 could not be translated [2023-12-02 20:08:21,203 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem58 could not be translated [2023-12-02 20:08:21,203 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem54 could not be translated [2023-12-02 20:08:21,204 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem57 could not be translated [2023-12-02 20:08:21,204 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short60 could not be translated [2023-12-02 20:08:21,204 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem55 could not be translated [2023-12-02 20:08:21,205 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short59 could not be translated [2023-12-02 20:08:21,205 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem54 could not be translated [2023-12-02 20:08:21,205 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem58 could not be translated [2023-12-02 20:08:21,205 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short56 could not be translated [2023-12-02 20:08:21,206 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem66 could not be translated [2023-12-02 20:08:21,206 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem63 could not be translated [2023-12-02 20:08:21,206 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short67 could not be translated [2023-12-02 20:08:21,206 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short68 could not be translated [2023-12-02 20:08:21,207 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem65 could not be translated [2023-12-02 20:08:21,207 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short64 could not be translated [2023-12-02 20:08:21,207 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem62 could not be translated [2023-12-02 20:08:21,208 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short67 could not be translated [2023-12-02 20:08:21,208 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short68 could not be translated [2023-12-02 20:08:21,209 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem62 could not be translated [2023-12-02 20:08:21,209 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem63 could not be translated [2023-12-02 20:08:21,209 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem65 could not be translated [2023-12-02 20:08:21,209 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem66 could not be translated [2023-12-02 20:08:21,210 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short64 could not be translated [2023-12-02 20:08:21,228 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 08:08:21 BoogieIcfgContainer [2023-12-02 20:08:21,228 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 20:08:21,229 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 20:08:21,229 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 20:08:21,229 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 20:08:21,230 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:08:19" (3/4) ... [2023-12-02 20:08:21,232 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 20:08:21,233 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 20:08:21,234 INFO L158 Benchmark]: Toolchain (without parser) took 3192.28ms. Allocated memory was 159.4MB in the beginning and 197.1MB in the end (delta: 37.7MB). Free memory was 121.7MB in the beginning and 109.3MB in the end (delta: 12.4MB). Peak memory consumption was 52.3MB. Max. memory is 16.1GB. [2023-12-02 20:08:21,235 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 109.1MB. Free memory was 62.1MB in the beginning and 61.9MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 20:08:21,236 INFO L158 Benchmark]: CACSL2BoogieTranslator took 294.92ms. Allocated memory is still 159.4MB. Free memory was 121.7MB in the beginning and 108.1MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 20:08:21,236 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.67ms. Allocated memory is still 159.4MB. Free memory was 108.1MB in the beginning and 104.9MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 20:08:21,237 INFO L158 Benchmark]: Boogie Preprocessor took 51.84ms. Allocated memory is still 159.4MB. Free memory was 104.9MB in the beginning and 102.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 20:08:21,238 INFO L158 Benchmark]: RCFGBuilder took 995.07ms. Allocated memory is still 159.4MB. Free memory was 102.8MB in the beginning and 71.6MB in the end (delta: 31.2MB). Peak memory consumption was 41.7MB. Max. memory is 16.1GB. [2023-12-02 20:08:21,238 INFO L158 Benchmark]: TraceAbstraction took 1777.86ms. Allocated memory was 159.4MB in the beginning and 197.1MB in the end (delta: 37.7MB). Free memory was 70.6MB in the beginning and 109.3MB in the end (delta: -38.7MB). Peak memory consumption was 90.8kB. Max. memory is 16.1GB. [2023-12-02 20:08:21,239 INFO L158 Benchmark]: Witness Printer took 4.28ms. Allocated memory is still 197.1MB. Free memory is still 109.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 20:08:21,243 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 109.1MB. Free memory was 62.1MB in the beginning and 61.9MB in the end (delta: 167.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 294.92ms. Allocated memory is still 159.4MB. Free memory was 121.7MB in the beginning and 108.1MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.67ms. Allocated memory is still 159.4MB. Free memory was 108.1MB in the beginning and 104.9MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.84ms. Allocated memory is still 159.4MB. Free memory was 104.9MB in the beginning and 102.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 995.07ms. Allocated memory is still 159.4MB. Free memory was 102.8MB in the beginning and 71.6MB in the end (delta: 31.2MB). Peak memory consumption was 41.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1777.86ms. Allocated memory was 159.4MB in the beginning and 197.1MB in the end (delta: 37.7MB). Free memory was 70.6MB in the beginning and 109.3MB in the end (delta: -38.7MB). Peak memory consumption was 90.8kB. Max. memory is 16.1GB. * Witness Printer took 4.28ms. Allocated memory is still 197.1MB. Free memory is still 109.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short33 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short29 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem27 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem30 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short32 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem28 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem31 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem28 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short29 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem30 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short33 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short32 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem31 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem27 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short40 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem36 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem35 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem38 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem39 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short41 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short37 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem36 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short40 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem39 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short37 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem38 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short41 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem35 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem44 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem43 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short48 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem46 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short49 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem47 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem43 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem44 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem47 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short49 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short45 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short48 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem46 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem51 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem51 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem52 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem52 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short56 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem57 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short60 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem55 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short59 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem58 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem54 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem57 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short60 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem55 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short59 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem54 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem58 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short56 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem66 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem63 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short67 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short68 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem65 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short64 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem62 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short67 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short68 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem62 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem63 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem65 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem66 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short64 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 55, overapproximation of someBinaryFLOATComparisonOperation at line 82. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22] unsigned short int var_1_1 = 32; [L23] unsigned short int* var_1_1_Pointer = &(var_1_1); [L24] unsigned char var_1_7 = 0; [L25] unsigned char* var_1_7_Pointer = &(var_1_7); [L26] double var_1_8 = 15.6; [L27] double* var_1_8_Pointer = &(var_1_8); [L28] double var_1_9 = 15.4; [L29] double* var_1_9_Pointer = &(var_1_9); [L30] double var_1_10 = 32.2; [L31] double* var_1_10_Pointer = &(var_1_10); [L32] unsigned char var_1_12 = 1; [L33] unsigned char* var_1_12_Pointer = &(var_1_12); [L34] signed short int var_1_13 = 256; [L35] signed short int* var_1_13_Pointer = &(var_1_13); [L36] float var_1_14 = 5.75; [L37] float* var_1_14_Pointer = &(var_1_14); [L38] float var_1_15 = 8.6; [L39] float* var_1_15_Pointer = &(var_1_15); [L40] unsigned char last_1_var_1_7 = 0; [L41] signed short int last_1_var_1_13 = 256; [L93] isInitial = 1 [L94] FCALL initially() [L95] COND TRUE 1 [L96] CALL updateLastVariables() [L85] EXPR \read(var_1_7) [L85] last_1_var_1_7 = var_1_7 [L86] EXPR \read(var_1_13) [L86] last_1_var_1_13 = var_1_13 [L96] RET updateLastVariables() [L97] CALL updateVariables() [L70] var_1_8 = __VERIFIER_nondet_double() [L71] EXPR \read(var_1_8) [L71] EXPR var_1_8 >= -922337.2036854776000e+13F && var_1_8 <= -1.0e-20F [L71] EXPR (var_1_8 >= -922337.2036854776000e+13F && var_1_8 <= -1.0e-20F) || (var_1_8 <= 9223372.036854776000e+12F && var_1_8 >= 1.0e-20F ) [L71] EXPR \read(var_1_8) [L71] EXPR var_1_8 <= 9223372.036854776000e+12F && var_1_8 >= 1.0e-20F [L71] EXPR \read(var_1_8) [L71] EXPR var_1_8 <= 9223372.036854776000e+12F && var_1_8 >= 1.0e-20F [L71] EXPR (var_1_8 >= -922337.2036854776000e+13F && var_1_8 <= -1.0e-20F) || (var_1_8 <= 9223372.036854776000e+12F && var_1_8 >= 1.0e-20F ) VAL [isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_10={8:0}, var_1_10_Pointer={8:0}, var_1_12={9:0}, var_1_12_Pointer={9:0}, var_1_13={10:0}, var_1_13_Pointer={10:0}, var_1_14={11:0}, var_1_14_Pointer={11:0}, var_1_15={12:0}, var_1_15_Pointer={12:0}, var_1_1={4:0}, var_1_1_Pointer={4:0}, var_1_7={5:0}, var_1_7_Pointer={5:0}, var_1_8={6:0}, var_1_8_Pointer={6:0}, var_1_9={7:0}, var_1_9_Pointer={7:0}] [L71] CALL assume_abort_if_not((var_1_8 >= -922337.2036854776000e+13F && var_1_8 <= -1.0e-20F) || (var_1_8 <= 9223372.036854776000e+12F && var_1_8 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_10={8:0}, var_1_10_Pointer={8:0}, var_1_12={9:0}, var_1_12_Pointer={9:0}, var_1_13={10:0}, var_1_13_Pointer={10:0}, var_1_14={11:0}, var_1_14_Pointer={11:0}, var_1_15={12:0}, var_1_15_Pointer={12:0}, var_1_1={4:0}, var_1_1_Pointer={4:0}, var_1_7={5:0}, var_1_7_Pointer={5:0}, var_1_8={6:0}, var_1_8_Pointer={6:0}, var_1_9={7:0}, var_1_9_Pointer={7:0}] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not((var_1_8 >= -922337.2036854776000e+13F && var_1_8 <= -1.0e-20F) || (var_1_8 <= 9223372.036854776000e+12F && var_1_8 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_10={8:0}, var_1_10_Pointer={8:0}, var_1_12={9:0}, var_1_12_Pointer={9:0}, var_1_13={10:0}, var_1_13_Pointer={10:0}, var_1_14={11:0}, var_1_14_Pointer={11:0}, var_1_15={12:0}, var_1_15_Pointer={12:0}, var_1_1={4:0}, var_1_1_Pointer={4:0}, var_1_7={5:0}, var_1_7_Pointer={5:0}, var_1_8={6:0}, var_1_8_Pointer={6:0}, var_1_9={7:0}, var_1_9_Pointer={7:0}] [L72] var_1_9 = __VERIFIER_nondet_double() [L73] EXPR \read(var_1_9) [L73] EXPR var_1_9 >= -922337.2036854776000e+13F && var_1_9 <= -1.0e-20F [L73] EXPR \read(var_1_9) [L73] EXPR var_1_9 >= -922337.2036854776000e+13F && var_1_9 <= -1.0e-20F [L73] EXPR (var_1_9 >= -922337.2036854776000e+13F && var_1_9 <= -1.0e-20F) || (var_1_9 <= 9223372.036854776000e+12F && var_1_9 >= 1.0e-20F ) VAL [isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_10={8:0}, var_1_10_Pointer={8:0}, var_1_12={9:0}, var_1_12_Pointer={9:0}, var_1_13={10:0}, var_1_13_Pointer={10:0}, var_1_14={11:0}, var_1_14_Pointer={11:0}, var_1_15={12:0}, var_1_15_Pointer={12:0}, var_1_1={4:0}, var_1_1_Pointer={4:0}, var_1_7={5:0}, var_1_7_Pointer={5:0}, var_1_8={6:0}, var_1_8_Pointer={6:0}, var_1_9={7:0}, var_1_9_Pointer={7:0}] [L73] CALL assume_abort_if_not((var_1_9 >= -922337.2036854776000e+13F && var_1_9 <= -1.0e-20F) || (var_1_9 <= 9223372.036854776000e+12F && var_1_9 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_10={8:0}, var_1_10_Pointer={8:0}, var_1_12={9:0}, var_1_12_Pointer={9:0}, var_1_13={10:0}, var_1_13_Pointer={10:0}, var_1_14={11:0}, var_1_14_Pointer={11:0}, var_1_15={12:0}, var_1_15_Pointer={12:0}, var_1_1={4:0}, var_1_1_Pointer={4:0}, var_1_7={5:0}, var_1_7_Pointer={5:0}, var_1_8={6:0}, var_1_8_Pointer={6:0}, var_1_9={7:0}, var_1_9_Pointer={7:0}] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not((var_1_9 >= -922337.2036854776000e+13F && var_1_9 <= -1.0e-20F) || (var_1_9 <= 9223372.036854776000e+12F && var_1_9 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_10={8:0}, var_1_10_Pointer={8:0}, var_1_12={9:0}, var_1_12_Pointer={9:0}, var_1_13={10:0}, var_1_13_Pointer={10:0}, var_1_14={11:0}, var_1_14_Pointer={11:0}, var_1_15={12:0}, var_1_15_Pointer={12:0}, var_1_1={4:0}, var_1_1_Pointer={4:0}, var_1_7={5:0}, var_1_7_Pointer={5:0}, var_1_8={6:0}, var_1_8_Pointer={6:0}, var_1_9={7:0}, var_1_9_Pointer={7:0}] [L74] var_1_10 = __VERIFIER_nondet_double() [L75] EXPR \read(var_1_10) [L75] EXPR var_1_10 >= -922337.2036854776000e+13F && var_1_10 <= -1.0e-20F [L75] EXPR (var_1_10 >= -922337.2036854776000e+13F && var_1_10 <= -1.0e-20F) || (var_1_10 <= 9223372.036854776000e+12F && var_1_10 >= 1.0e-20F ) [L75] EXPR \read(var_1_10) [L75] EXPR var_1_10 <= 9223372.036854776000e+12F && var_1_10 >= 1.0e-20F [L75] EXPR \read(var_1_10) [L75] EXPR var_1_10 <= 9223372.036854776000e+12F && var_1_10 >= 1.0e-20F [L75] EXPR (var_1_10 >= -922337.2036854776000e+13F && var_1_10 <= -1.0e-20F) || (var_1_10 <= 9223372.036854776000e+12F && var_1_10 >= 1.0e-20F ) VAL [isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_10={8:0}, var_1_10_Pointer={8:0}, var_1_12={9:0}, var_1_12_Pointer={9:0}, var_1_13={10:0}, var_1_13_Pointer={10:0}, var_1_14={11:0}, var_1_14_Pointer={11:0}, var_1_15={12:0}, var_1_15_Pointer={12:0}, var_1_1={4:0}, var_1_1_Pointer={4:0}, var_1_7={5:0}, var_1_7_Pointer={5:0}, var_1_8={6:0}, var_1_8_Pointer={6:0}, var_1_9={7:0}, var_1_9_Pointer={7:0}] [L75] CALL assume_abort_if_not((var_1_10 >= -922337.2036854776000e+13F && var_1_10 <= -1.0e-20F) || (var_1_10 <= 9223372.036854776000e+12F && var_1_10 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_10={8:0}, var_1_10_Pointer={8:0}, var_1_12={9:0}, var_1_12_Pointer={9:0}, var_1_13={10:0}, var_1_13_Pointer={10:0}, var_1_14={11:0}, var_1_14_Pointer={11:0}, var_1_15={12:0}, var_1_15_Pointer={12:0}, var_1_1={4:0}, var_1_1_Pointer={4:0}, var_1_7={5:0}, var_1_7_Pointer={5:0}, var_1_8={6:0}, var_1_8_Pointer={6:0}, var_1_9={7:0}, var_1_9_Pointer={7:0}] [L20] COND FALSE !(!cond) [L75] RET assume_abort_if_not((var_1_10 >= -922337.2036854776000e+13F && var_1_10 <= -1.0e-20F) || (var_1_10 <= 9223372.036854776000e+12F && var_1_10 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_10={8:0}, var_1_10_Pointer={8:0}, var_1_12={9:0}, var_1_12_Pointer={9:0}, var_1_13={10:0}, var_1_13_Pointer={10:0}, var_1_14={11:0}, var_1_14_Pointer={11:0}, var_1_15={12:0}, var_1_15_Pointer={12:0}, var_1_1={4:0}, var_1_1_Pointer={4:0}, var_1_7={5:0}, var_1_7_Pointer={5:0}, var_1_8={6:0}, var_1_8_Pointer={6:0}, var_1_9={7:0}, var_1_9_Pointer={7:0}] [L76] var_1_12 = __VERIFIER_nondet_uchar() [L77] EXPR \read(var_1_12) VAL [isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_10={8:0}, var_1_10_Pointer={8:0}, var_1_12={9:0}, var_1_12_Pointer={9:0}, var_1_13={10:0}, var_1_13_Pointer={10:0}, var_1_14={11:0}, var_1_14_Pointer={11:0}, var_1_15={12:0}, var_1_15_Pointer={12:0}, var_1_1={4:0}, var_1_1_Pointer={4:0}, var_1_7={5:0}, var_1_7_Pointer={5:0}, var_1_8={6:0}, var_1_8_Pointer={6:0}, var_1_9={7:0}, var_1_9_Pointer={7:0}] [L77] CALL assume_abort_if_not(var_1_12 >= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_10={8:0}, var_1_10_Pointer={8:0}, var_1_12={9:0}, var_1_12_Pointer={9:0}, var_1_13={10:0}, var_1_13_Pointer={10:0}, var_1_14={11:0}, var_1_14_Pointer={11:0}, var_1_15={12:0}, var_1_15_Pointer={12:0}, var_1_1={4:0}, var_1_1_Pointer={4:0}, var_1_7={5:0}, var_1_7_Pointer={5:0}, var_1_8={6:0}, var_1_8_Pointer={6:0}, var_1_9={7:0}, var_1_9_Pointer={7:0}] [L20] COND FALSE !(!cond) [L77] RET assume_abort_if_not(var_1_12 >= 1) VAL [isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_10={8:0}, var_1_10_Pointer={8:0}, var_1_12={9:0}, var_1_12_Pointer={9:0}, var_1_13={10:0}, var_1_13_Pointer={10:0}, var_1_14={11:0}, var_1_14_Pointer={11:0}, var_1_15={12:0}, var_1_15_Pointer={12:0}, var_1_1={4:0}, var_1_1_Pointer={4:0}, var_1_7={5:0}, var_1_7_Pointer={5:0}, var_1_8={6:0}, var_1_8_Pointer={6:0}, var_1_9={7:0}, var_1_9_Pointer={7:0}] [L78] EXPR \read(var_1_12) VAL [isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_10={8:0}, var_1_10_Pointer={8:0}, var_1_12={9:0}, var_1_12_Pointer={9:0}, var_1_13={10:0}, var_1_13_Pointer={10:0}, var_1_14={11:0}, var_1_14_Pointer={11:0}, var_1_15={12:0}, var_1_15_Pointer={12:0}, var_1_1={4:0}, var_1_1_Pointer={4:0}, var_1_7={5:0}, var_1_7_Pointer={5:0}, var_1_8={6:0}, var_1_8_Pointer={6:0}, var_1_9={7:0}, var_1_9_Pointer={7:0}] [L78] CALL assume_abort_if_not(var_1_12 <= 1) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_10={8:0}, var_1_10_Pointer={8:0}, var_1_12={9:0}, var_1_12_Pointer={9:0}, var_1_13={10:0}, var_1_13_Pointer={10:0}, var_1_14={11:0}, var_1_14_Pointer={11:0}, var_1_15={12:0}, var_1_15_Pointer={12:0}, var_1_1={4:0}, var_1_1_Pointer={4:0}, var_1_7={5:0}, var_1_7_Pointer={5:0}, var_1_8={6:0}, var_1_8_Pointer={6:0}, var_1_9={7:0}, var_1_9_Pointer={7:0}] [L20] COND FALSE !(!cond) [L78] RET assume_abort_if_not(var_1_12 <= 1) VAL [isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_10={8:0}, var_1_10_Pointer={8:0}, var_1_12={9:0}, var_1_12_Pointer={9:0}, var_1_13={10:0}, var_1_13_Pointer={10:0}, var_1_14={11:0}, var_1_14_Pointer={11:0}, var_1_15={12:0}, var_1_15_Pointer={12:0}, var_1_1={4:0}, var_1_1_Pointer={4:0}, var_1_7={5:0}, var_1_7_Pointer={5:0}, var_1_8={6:0}, var_1_8_Pointer={6:0}, var_1_9={7:0}, var_1_9_Pointer={7:0}] [L79] var_1_14 = __VERIFIER_nondet_float() [L80] EXPR \read(var_1_14) [L80] EXPR var_1_14 >= 0.0F && var_1_14 <= -1.0e-20F [L80] EXPR (var_1_14 >= 0.0F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 9223372.036854776000e+12F && var_1_14 >= 1.0e-20F ) [L80] EXPR \read(var_1_14) [L80] EXPR var_1_14 <= 9223372.036854776000e+12F && var_1_14 >= 1.0e-20F [L80] EXPR \read(var_1_14) [L80] EXPR var_1_14 <= 9223372.036854776000e+12F && var_1_14 >= 1.0e-20F [L80] EXPR (var_1_14 >= 0.0F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 9223372.036854776000e+12F && var_1_14 >= 1.0e-20F ) VAL [isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_10={8:0}, var_1_10_Pointer={8:0}, var_1_12={9:0}, var_1_12_Pointer={9:0}, var_1_13={10:0}, var_1_13_Pointer={10:0}, var_1_14={11:0}, var_1_14_Pointer={11:0}, var_1_15={12:0}, var_1_15_Pointer={12:0}, var_1_1={4:0}, var_1_1_Pointer={4:0}, var_1_7={5:0}, var_1_7_Pointer={5:0}, var_1_8={6:0}, var_1_8_Pointer={6:0}, var_1_9={7:0}, var_1_9_Pointer={7:0}] [L80] CALL assume_abort_if_not((var_1_14 >= 0.0F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 9223372.036854776000e+12F && var_1_14 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_10={8:0}, var_1_10_Pointer={8:0}, var_1_12={9:0}, var_1_12_Pointer={9:0}, var_1_13={10:0}, var_1_13_Pointer={10:0}, var_1_14={11:0}, var_1_14_Pointer={11:0}, var_1_15={12:0}, var_1_15_Pointer={12:0}, var_1_1={4:0}, var_1_1_Pointer={4:0}, var_1_7={5:0}, var_1_7_Pointer={5:0}, var_1_8={6:0}, var_1_8_Pointer={6:0}, var_1_9={7:0}, var_1_9_Pointer={7:0}] [L20] COND FALSE !(!cond) [L80] RET assume_abort_if_not((var_1_14 >= 0.0F && var_1_14 <= -1.0e-20F) || (var_1_14 <= 9223372.036854776000e+12F && var_1_14 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_10={8:0}, var_1_10_Pointer={8:0}, var_1_12={9:0}, var_1_12_Pointer={9:0}, var_1_13={10:0}, var_1_13_Pointer={10:0}, var_1_14={11:0}, var_1_14_Pointer={11:0}, var_1_15={12:0}, var_1_15_Pointer={12:0}, var_1_1={4:0}, var_1_1_Pointer={4:0}, var_1_7={5:0}, var_1_7_Pointer={5:0}, var_1_8={6:0}, var_1_8_Pointer={6:0}, var_1_9={7:0}, var_1_9_Pointer={7:0}] [L81] var_1_15 = __VERIFIER_nondet_float() [L82] EXPR \read(var_1_15) [L82] EXPR var_1_15 >= 0.0F && var_1_15 <= -1.0e-20F [L82] EXPR \read(var_1_15) [L82] EXPR var_1_15 >= 0.0F && var_1_15 <= -1.0e-20F [L82] EXPR (var_1_15 >= 0.0F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 9223372.036854776000e+12F && var_1_15 >= 1.0e-20F ) VAL [isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_10={8:0}, var_1_10_Pointer={8:0}, var_1_12={9:0}, var_1_12_Pointer={9:0}, var_1_13={10:0}, var_1_13_Pointer={10:0}, var_1_14={11:0}, var_1_14_Pointer={11:0}, var_1_15={12:0}, var_1_15_Pointer={12:0}, var_1_1={4:0}, var_1_1_Pointer={4:0}, var_1_7={5:0}, var_1_7_Pointer={5:0}, var_1_8={6:0}, var_1_8_Pointer={6:0}, var_1_9={7:0}, var_1_9_Pointer={7:0}] [L82] CALL assume_abort_if_not((var_1_15 >= 0.0F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 9223372.036854776000e+12F && var_1_15 >= 1.0e-20F )) VAL [\old(cond)=1, isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_10={8:0}, var_1_10_Pointer={8:0}, var_1_12={9:0}, var_1_12_Pointer={9:0}, var_1_13={10:0}, var_1_13_Pointer={10:0}, var_1_14={11:0}, var_1_14_Pointer={11:0}, var_1_15={12:0}, var_1_15_Pointer={12:0}, var_1_1={4:0}, var_1_1_Pointer={4:0}, var_1_7={5:0}, var_1_7_Pointer={5:0}, var_1_8={6:0}, var_1_8_Pointer={6:0}, var_1_9={7:0}, var_1_9_Pointer={7:0}] [L20] COND FALSE !(!cond) [L82] RET assume_abort_if_not((var_1_15 >= 0.0F && var_1_15 <= -1.0e-20F) || (var_1_15 <= 9223372.036854776000e+12F && var_1_15 >= 1.0e-20F )) VAL [isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_10={8:0}, var_1_10_Pointer={8:0}, var_1_12={9:0}, var_1_12_Pointer={9:0}, var_1_13={10:0}, var_1_13_Pointer={10:0}, var_1_14={11:0}, var_1_14_Pointer={11:0}, var_1_15={12:0}, var_1_15_Pointer={12:0}, var_1_1={4:0}, var_1_1_Pointer={4:0}, var_1_7={5:0}, var_1_7_Pointer={5:0}, var_1_8={6:0}, var_1_8_Pointer={6:0}, var_1_9={7:0}, var_1_9_Pointer={7:0}] [L97] RET updateVariables() [L98] CALL step() [L45] COND TRUE (last_1_var_1_13 + ((((last_1_var_1_13) > (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13)))) < (last_1_var_1_13 * last_1_var_1_13) [L46] COND FALSE !(last_1_var_1_13 < (last_1_var_1_13 - last_1_var_1_13)) [L54] EXPR \read(*var_1_12_Pointer) [L54] COND TRUE (*(var_1_12_Pointer)) [L55] EXPR \read(*var_1_14_Pointer) [L55] EXPR \read(*var_1_15_Pointer) [L55] EXPR \read(*var_1_8_Pointer) [L55] EXPR \read(*var_1_10_Pointer) [L55] EXPR \read(*var_1_9_Pointer) [L55] COND FALSE !(((*(var_1_14_Pointer)) - (*(var_1_15_Pointer))) >= (((*(var_1_8_Pointer)) + (*(var_1_10_Pointer))) + (*(var_1_9_Pointer)))) [L58] EXPR \read(*var_1_1_Pointer) [L58] (*(var_1_13_Pointer)) = (*(var_1_1_Pointer)) [L61] EXPR \read(*var_1_8_Pointer) [L61] EXPR \read(*var_1_9_Pointer) [L61] EXPR (((*(var_1_8_Pointer))) < ((*(var_1_9_Pointer)))) ? ((*(var_1_8_Pointer))) : ((*(var_1_9_Pointer))) [L61] EXPR \read(*var_1_8_Pointer) [L61] EXPR (((*(var_1_8_Pointer))) < ((*(var_1_9_Pointer)))) ? ((*(var_1_8_Pointer))) : ((*(var_1_9_Pointer))) [L61] EXPR \read(*var_1_10_Pointer) [L61] COND TRUE (((((*(var_1_8_Pointer))) < ((*(var_1_9_Pointer)))) ? ((*(var_1_8_Pointer))) : ((*(var_1_9_Pointer))))) <= (*(var_1_10_Pointer)) [L62] last_1_var_1_7 && ((*(var_1_1_Pointer)) >= (*(var_1_1_Pointer))) [L62] COND FALSE !(last_1_var_1_7 && ((*(var_1_1_Pointer)) >= (*(var_1_1_Pointer)))) [L98] RET step() [L99] CALL, EXPR property() [L89] EXPR ((last_1_var_1_13 + ((((last_1_var_1_13) > (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13)))) < (last_1_var_1_13 * last_1_var_1_13)) ? ((last_1_var_1_13 < (last_1_var_1_13 - last_1_var_1_13)) ? ((last_1_var_1_13 != (((((((last_1_var_1_13) < (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13))) < 0 ) ? -((((last_1_var_1_13) < (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13))) : ((((last_1_var_1_13) < (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13)))))) ? ((*(var_1_1_Pointer)) == ((unsigned short int) last_1_var_1_13)) : 1) : 1) : ((*(var_1_1_Pointer)) == ((unsigned short int) last_1_var_1_13)) [L89] EXPR (last_1_var_1_13 < (last_1_var_1_13 - last_1_var_1_13)) ? ((last_1_var_1_13 != (((((((last_1_var_1_13) < (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13))) < 0 ) ? -((((last_1_var_1_13) < (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13))) : ((((last_1_var_1_13) < (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13)))))) ? ((*(var_1_1_Pointer)) == ((unsigned short int) last_1_var_1_13)) : 1) : 1 [L89] EXPR ((last_1_var_1_13 + ((((last_1_var_1_13) > (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13)))) < (last_1_var_1_13 * last_1_var_1_13)) ? ((last_1_var_1_13 < (last_1_var_1_13 - last_1_var_1_13)) ? ((last_1_var_1_13 != (((((((last_1_var_1_13) < (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13))) < 0 ) ? -((((last_1_var_1_13) < (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13))) : ((((last_1_var_1_13) < (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13)))))) ? ((*(var_1_1_Pointer)) == ((unsigned short int) last_1_var_1_13)) : 1) : 1) : ((*(var_1_1_Pointer)) == ((unsigned short int) last_1_var_1_13)) [L89] EXPR (((last_1_var_1_13 + ((((last_1_var_1_13) > (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13)))) < (last_1_var_1_13 * last_1_var_1_13)) ? ((last_1_var_1_13 < (last_1_var_1_13 - last_1_var_1_13)) ? ((last_1_var_1_13 != (((((((last_1_var_1_13) < (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13))) < 0 ) ? -((((last_1_var_1_13) < (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13))) : ((((last_1_var_1_13) < (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13)))))) ? ((*(var_1_1_Pointer)) == ((unsigned short int) last_1_var_1_13)) : 1) : 1) : ((*(var_1_1_Pointer)) == ((unsigned short int) last_1_var_1_13))) && (((((((*(var_1_8_Pointer))) < ((*(var_1_9_Pointer)))) ? ((*(var_1_8_Pointer))) : ((*(var_1_9_Pointer))))) <= (*(var_1_10_Pointer))) ? ((last_1_var_1_7 && ((*(var_1_1_Pointer)) >= (*(var_1_1_Pointer)))) ? ((*(var_1_7_Pointer)) == ((unsigned char) 0)) : 1) : ((*(var_1_7_Pointer)) == ((unsigned char) (*(var_1_12_Pointer))))) [L89] EXPR \read(*var_1_8_Pointer) [L89] EXPR \read(*var_1_9_Pointer) [L89] EXPR (((*(var_1_8_Pointer))) < ((*(var_1_9_Pointer)))) ? ((*(var_1_8_Pointer))) : ((*(var_1_9_Pointer))) [L89] EXPR \read(*var_1_9_Pointer) [L89] EXPR (((*(var_1_8_Pointer))) < ((*(var_1_9_Pointer)))) ? ((*(var_1_8_Pointer))) : ((*(var_1_9_Pointer))) [L89] EXPR \read(*var_1_10_Pointer) [L89] EXPR ((((((*(var_1_8_Pointer))) < ((*(var_1_9_Pointer)))) ? ((*(var_1_8_Pointer))) : ((*(var_1_9_Pointer))))) <= (*(var_1_10_Pointer))) ? ((last_1_var_1_7 && ((*(var_1_1_Pointer)) >= (*(var_1_1_Pointer)))) ? ((*(var_1_7_Pointer)) == ((unsigned char) 0)) : 1) : ((*(var_1_7_Pointer)) == ((unsigned char) (*(var_1_12_Pointer)))) [L89] EXPR \read(*var_1_7_Pointer) [L89] EXPR \read(*var_1_12_Pointer) [L89] EXPR ((((((*(var_1_8_Pointer))) < ((*(var_1_9_Pointer)))) ? ((*(var_1_8_Pointer))) : ((*(var_1_9_Pointer))))) <= (*(var_1_10_Pointer))) ? ((last_1_var_1_7 && ((*(var_1_1_Pointer)) >= (*(var_1_1_Pointer)))) ? ((*(var_1_7_Pointer)) == ((unsigned char) 0)) : 1) : ((*(var_1_7_Pointer)) == ((unsigned char) (*(var_1_12_Pointer)))) [L89] EXPR (((last_1_var_1_13 + ((((last_1_var_1_13) > (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13)))) < (last_1_var_1_13 * last_1_var_1_13)) ? ((last_1_var_1_13 < (last_1_var_1_13 - last_1_var_1_13)) ? ((last_1_var_1_13 != (((((((last_1_var_1_13) < (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13))) < 0 ) ? -((((last_1_var_1_13) < (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13))) : ((((last_1_var_1_13) < (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13)))))) ? ((*(var_1_1_Pointer)) == ((unsigned short int) last_1_var_1_13)) : 1) : 1) : ((*(var_1_1_Pointer)) == ((unsigned short int) last_1_var_1_13))) && (((((((*(var_1_8_Pointer))) < ((*(var_1_9_Pointer)))) ? ((*(var_1_8_Pointer))) : ((*(var_1_9_Pointer))))) <= (*(var_1_10_Pointer))) ? ((last_1_var_1_7 && ((*(var_1_1_Pointer)) >= (*(var_1_1_Pointer)))) ? ((*(var_1_7_Pointer)) == ((unsigned char) 0)) : 1) : ((*(var_1_7_Pointer)) == ((unsigned char) (*(var_1_12_Pointer))))) [L89] EXPR ((((last_1_var_1_13 + ((((last_1_var_1_13) > (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13)))) < (last_1_var_1_13 * last_1_var_1_13)) ? ((last_1_var_1_13 < (last_1_var_1_13 - last_1_var_1_13)) ? ((last_1_var_1_13 != (((((((last_1_var_1_13) < (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13))) < 0 ) ? -((((last_1_var_1_13) < (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13))) : ((((last_1_var_1_13) < (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13)))))) ? ((*(var_1_1_Pointer)) == ((unsigned short int) last_1_var_1_13)) : 1) : 1) : ((*(var_1_1_Pointer)) == ((unsigned short int) last_1_var_1_13))) && (((((((*(var_1_8_Pointer))) < ((*(var_1_9_Pointer)))) ? ((*(var_1_8_Pointer))) : ((*(var_1_9_Pointer))))) <= (*(var_1_10_Pointer))) ? ((last_1_var_1_7 && ((*(var_1_1_Pointer)) >= (*(var_1_1_Pointer)))) ? ((*(var_1_7_Pointer)) == ((unsigned char) 0)) : 1) : ((*(var_1_7_Pointer)) == ((unsigned char) (*(var_1_12_Pointer)))))) && ((*(var_1_12_Pointer)) ? ((((*(var_1_14_Pointer)) - (*(var_1_15_Pointer))) >= (((*(var_1_8_Pointer)) + (*(var_1_10_Pointer))) + (*(var_1_9_Pointer)))) ? ((*(var_1_13_Pointer)) == ((signed short int) (((((*(var_1_1_Pointer))) > ((*(var_1_1_Pointer)))) ? ((*(var_1_1_Pointer))) : ((*(var_1_1_Pointer))))))) : ((*(var_1_13_Pointer)) == ((signed short int) (*(var_1_1_Pointer))))) : 1) [L89-L90] return ((((last_1_var_1_13 + ((((last_1_var_1_13) > (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13)))) < (last_1_var_1_13 * last_1_var_1_13)) ? ((last_1_var_1_13 < (last_1_var_1_13 - last_1_var_1_13)) ? ((last_1_var_1_13 != (((((((last_1_var_1_13) < (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13))) < 0 ) ? -((((last_1_var_1_13) < (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13))) : ((((last_1_var_1_13) < (last_1_var_1_13)) ? (last_1_var_1_13) : (last_1_var_1_13)))))) ? ((*(var_1_1_Pointer)) == ((unsigned short int) last_1_var_1_13)) : 1) : 1) : ((*(var_1_1_Pointer)) == ((unsigned short int) last_1_var_1_13))) && (((((((*(var_1_8_Pointer))) < ((*(var_1_9_Pointer)))) ? ((*(var_1_8_Pointer))) : ((*(var_1_9_Pointer))))) <= (*(var_1_10_Pointer))) ? ((last_1_var_1_7 && ((*(var_1_1_Pointer)) >= (*(var_1_1_Pointer)))) ? ((*(var_1_7_Pointer)) == ((unsigned char) 0)) : 1) : ((*(var_1_7_Pointer)) == ((unsigned char) (*(var_1_12_Pointer)))))) && ((*(var_1_12_Pointer)) ? ((((*(var_1_14_Pointer)) - (*(var_1_15_Pointer))) >= (((*(var_1_8_Pointer)) + (*(var_1_10_Pointer))) + (*(var_1_9_Pointer)))) ? ((*(var_1_13_Pointer)) == ((signed short int) (((((*(var_1_1_Pointer))) > ((*(var_1_1_Pointer)))) ? ((*(var_1_1_Pointer))) : ((*(var_1_1_Pointer))))))) : ((*(var_1_13_Pointer)) == ((signed short int) (*(var_1_1_Pointer))))) : 1) ; [L99] RET, EXPR property() [L99] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_10={8:0}, var_1_10_Pointer={8:0}, var_1_12={9:0}, var_1_12_Pointer={9:0}, var_1_13={10:0}, var_1_13_Pointer={10:0}, var_1_14={11:0}, var_1_14_Pointer={11:0}, var_1_15={12:0}, var_1_15_Pointer={12:0}, var_1_1={4:0}, var_1_1_Pointer={4:0}, var_1_7={5:0}, var_1_7_Pointer={5:0}, var_1_8={6:0}, var_1_8_Pointer={6:0}, var_1_9={7:0}, var_1_9_Pointer={7:0}] [L19] reach_error() VAL [\old(cond)=0, cond=0, isInitial=1, last_1_var_1_13=256, last_1_var_1_7=0, var_1_10={8:0}, var_1_10_Pointer={8:0}, var_1_12={9:0}, var_1_12_Pointer={9:0}, var_1_13={10:0}, var_1_13_Pointer={10:0}, var_1_14={11:0}, var_1_14_Pointer={11:0}, var_1_15={12:0}, var_1_15_Pointer={12:0}, var_1_1={4:0}, var_1_1_Pointer={4:0}, var_1_7={5:0}, var_1_7_Pointer={5:0}, var_1_8={6:0}, var_1_8_Pointer={6:0}, var_1_9={7:0}, var_1_9_Pointer={7:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 1, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 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 20:08:21,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-21.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 1cca72686861ad5f32c03321c83cb01c79fc9fe11e27ec52efe74f8c4ef5e302 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 20:08:23,247 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 20:08:23,336 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 20:08:23,342 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 20:08:23,343 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 20:08:23,372 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 20:08:23,372 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 20:08:23,373 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 20:08:23,374 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 20:08:23,374 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 20:08:23,375 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 20:08:23,375 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 20:08:23,376 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 20:08:23,376 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 20:08:23,377 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 20:08:23,377 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 20:08:23,378 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 20:08:23,379 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 20:08:23,379 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 20:08:23,380 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 20:08:23,380 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 20:08:23,381 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 20:08:23,382 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 20:08:23,382 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 20:08:23,382 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 20:08:23,383 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 20:08:23,383 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 20:08:23,384 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 20:08:23,384 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 20:08:23,385 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 20:08:23,385 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 20:08:23,386 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 20:08:23,386 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 20:08:23,386 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 20:08:23,386 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 20:08:23,387 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 20:08:23,387 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 20:08:23,387 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 20:08:23,387 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 20:08:23,388 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 20:08:23,388 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 20:08:23,388 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 20:08:23,388 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 20:08:23,389 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 20:08:23,389 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_52dcfd49-f60a-4932-9ab1-d9d079efd462/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1cca72686861ad5f32c03321c83cb01c79fc9fe11e27ec52efe74f8c4ef5e302 [2023-12-02 20:08:23,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 20:08:23,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 20:08:23,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 20:08:23,703 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 20:08:23,703 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 20:08:23,705 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-21.i [2023-12-02 20:08:26,504 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 20:08:26,722 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 20:08:26,723 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-21.i [2023-12-02 20:08:26,735 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/data/78187a93f/0ebbc25da1be44f396fd570a81ce3dd1/FLAG428d1590d [2023-12-02 20:08:26,748 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/data/78187a93f/0ebbc25da1be44f396fd570a81ce3dd1 [2023-12-02 20:08:26,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 20:08:26,752 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 20:08:26,753 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 20:08:26,753 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 20:08:26,758 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 20:08:26,759 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:08:26" (1/1) ... [2023-12-02 20:08:26,760 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42f528bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:08:26, skipping insertion in model container [2023-12-02 20:08:26,760 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:08:26" (1/1) ... [2023-12-02 20:08:26,789 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 20:08:26,922 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_52dcfd49-f60a-4932-9ab1-d9d079efd462/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-21.i[916,929] [2023-12-02 20:08:26,974 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 20:08:26,994 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 20:08:27,005 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_52dcfd49-f60a-4932-9ab1-d9d079efd462/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-21.i[916,929] [2023-12-02 20:08:27,034 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 20:08:27,054 INFO L206 MainTranslator]: Completed translation [2023-12-02 20:08:27,054 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:08:27 WrapperNode [2023-12-02 20:08:27,054 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 20:08:27,055 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 20:08:27,055 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 20:08:27,055 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 20:08:27,061 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:08:27" (1/1) ... [2023-12-02 20:08:27,079 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:08:27" (1/1) ... [2023-12-02 20:08:27,114 INFO L138 Inliner]: procedures = 36, calls = 118, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 383 [2023-12-02 20:08:27,115 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 20:08:27,116 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 20:08:27,116 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 20:08:27,116 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 20:08:27,127 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:08:27" (1/1) ... [2023-12-02 20:08:27,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:08:27" (1/1) ... [2023-12-02 20:08:27,136 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:08:27" (1/1) ... [2023-12-02 20:08:27,137 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:08:27" (1/1) ... [2023-12-02 20:08:27,156 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:08:27" (1/1) ... [2023-12-02 20:08:27,162 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:08:27" (1/1) ... [2023-12-02 20:08:27,167 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:08:27" (1/1) ... [2023-12-02 20:08:27,171 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:08:27" (1/1) ... [2023-12-02 20:08:27,179 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 20:08:27,180 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 20:08:27,180 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 20:08:27,180 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 20:08:27,181 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:08:27" (1/1) ... [2023-12-02 20:08:27,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 20:08:27,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 20:08:27,210 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 20:08:27,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 20:08:27,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 20:08:27,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2023-12-02 20:08:27,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2023-12-02 20:08:27,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-12-02 20:08:27,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2023-12-02 20:08:27,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 20:08:27,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2023-12-02 20:08:27,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2023-12-02 20:08:27,251 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2023-12-02 20:08:27,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2023-12-02 20:08:27,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2023-12-02 20:08:27,252 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 20:08:27,252 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 20:08:27,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 20:08:27,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 20:08:27,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-12-02 20:08:27,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2023-12-02 20:08:27,417 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 20:08:27,419 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 20:08:36,321 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 20:08:36,381 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 20:08:36,381 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 20:08:36,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:08:36 BoogieIcfgContainer [2023-12-02 20:08:36,382 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 20:08:36,385 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 20:08:36,385 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 20:08:36,388 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 20:08:36,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:08:26" (1/3) ... [2023-12-02 20:08:36,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e9709ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:08:36, skipping insertion in model container [2023-12-02 20:08:36,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:08:27" (2/3) ... [2023-12-02 20:08:36,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e9709ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:08:36, skipping insertion in model container [2023-12-02 20:08:36,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:08:36" (3/3) ... [2023-12-02 20:08:36,391 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-21.i [2023-12-02 20:08:36,407 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 20:08:36,407 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 20:08:36,451 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 20:08:36,458 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;@4c232d91, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 20:08:36,458 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 20:08:36,462 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 79 states have (on average 1.5316455696202531) internal successors, (121), 80 states have internal predecessors, (121), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 20:08:36,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-02 20:08:36,474 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:08:36,474 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:08:36,475 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:08:36,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:08:36,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1647384108, now seen corresponding path program 1 times [2023-12-02 20:08:36,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 20:08:36,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687075503] [2023-12-02 20:08:36,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:08:36,492 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 20:08:36,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 20:08:36,493 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:08:36,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:08:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:08:36,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 20:08:36,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:08:36,908 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-02 20:08:36,908 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:08:36,909 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 20:08:36,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687075503] [2023-12-02 20:08:36,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687075503] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:08:36,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:08:36,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 20:08:36,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433724011] [2023-12-02 20:08:36,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:08:36,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 20:08:36,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 20:08:36,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 20:08:36,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 20:08:36,951 INFO L87 Difference]: Start difference. First operand has 89 states, 79 states have (on average 1.5316455696202531) internal successors, (121), 80 states have internal predecessors, (121), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 1 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 20:08:37,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:08:37,015 INFO L93 Difference]: Finished difference Result 175 states and 275 transitions. [2023-12-02 20:08:37,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 20:08:37,018 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 1 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 75 [2023-12-02 20:08:37,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:08:37,028 INFO L225 Difference]: With dead ends: 175 [2023-12-02 20:08:37,028 INFO L226 Difference]: Without dead ends: 87 [2023-12-02 20:08:37,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 74 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 20:08:37,036 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 20:08:37,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 20:08:37,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-12-02 20:08:37,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-12-02 20:08:37,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 78 states have (on average 1.4871794871794872) internal successors, (116), 78 states have internal predecessors, (116), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 20:08:37,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 130 transitions. [2023-12-02 20:08:37,086 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 130 transitions. Word has length 75 [2023-12-02 20:08:37,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:08:37,086 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 130 transitions. [2023-12-02 20:08:37,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 1 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 20:08:37,087 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 130 transitions. [2023-12-02 20:08:37,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-02 20:08:37,092 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:08:37,092 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:08:37,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:08:37,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:08:37,297 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:08:37,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:08:37,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1170950670, now seen corresponding path program 1 times [2023-12-02 20:08:37,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 20:08:37,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [190031783] [2023-12-02 20:08:37,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:08:37,299 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 20:08:37,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 20:08:37,300 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:08:37,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:08:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:08:37,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 20:08:37,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:08:37,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-02 20:08:38,047 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-02 20:08:38,047 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:08:38,048 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 20:08:38,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [190031783] [2023-12-02 20:08:38,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [190031783] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:08:38,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:08:38,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 20:08:38,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931549690] [2023-12-02 20:08:38,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:08:38,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 20:08:38,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 20:08:38,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 20:08:38,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 20:08:38,052 INFO L87 Difference]: Start difference. First operand 87 states and 130 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 20:08:40,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:08:42,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:08:44,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:08:46,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:08:48,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:08:51,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:08:53,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:08:55,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:08:55,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:08:55,341 INFO L93 Difference]: Finished difference Result 257 states and 384 transitions. [2023-12-02 20:08:55,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 20:08:55,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 75 [2023-12-02 20:08:55,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:08:55,366 INFO L225 Difference]: With dead ends: 257 [2023-12-02 20:08:55,366 INFO L226 Difference]: Without dead ends: 171 [2023-12-02 20:08:55,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 20:08:55,368 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 73 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 4 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2023-12-02 20:08:55,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 306 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 78 Invalid, 8 Unknown, 0 Unchecked, 17.2s Time] [2023-12-02 20:08:55,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-12-02 20:08:55,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 147. [2023-12-02 20:08:55,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 130 states have (on average 1.4615384615384615) internal successors, (190), 130 states have internal predecessors, (190), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 20:08:55,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 218 transitions. [2023-12-02 20:08:55,388 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 218 transitions. Word has length 75 [2023-12-02 20:08:55,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:08:55,389 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 218 transitions. [2023-12-02 20:08:55,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 20:08:55,389 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 218 transitions. [2023-12-02 20:08:55,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-02 20:08:55,391 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:08:55,392 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:08:55,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:08:55,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:08:55,596 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:08:55,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:08:55,597 INFO L85 PathProgramCache]: Analyzing trace with hash -2088746051, now seen corresponding path program 1 times [2023-12-02 20:08:55,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 20:08:55,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398361165] [2023-12-02 20:08:55,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:08:55,599 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 20:08:55,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 20:08:55,600 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:08:55,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:08:55,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:08:55,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 20:08:55,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:08:55,957 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-02 20:08:55,958 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:08:55,958 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 20:08:55,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398361165] [2023-12-02 20:08:55,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398361165] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:08:55,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:08:55,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 20:08:55,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469072483] [2023-12-02 20:08:55,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:08:55,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 20:08:55,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 20:08:55,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 20:08:55,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 20:08:55,962 INFO L87 Difference]: Start difference. First operand 147 states and 218 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 20:08:56,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:08:56,339 INFO L93 Difference]: Finished difference Result 252 states and 375 transitions. [2023-12-02 20:08:56,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 20:08:56,340 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 78 [2023-12-02 20:08:56,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:08:56,342 INFO L225 Difference]: With dead ends: 252 [2023-12-02 20:08:56,342 INFO L226 Difference]: Without dead ends: 166 [2023-12-02 20:08:56,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 20:08:56,345 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 72 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 20:08:56,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 476 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 20:08:56,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-12-02 20:08:56,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 150. [2023-12-02 20:08:56,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 133 states have (on average 1.4511278195488722) internal successors, (193), 133 states have internal predecessors, (193), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 20:08:56,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 221 transitions. [2023-12-02 20:08:56,359 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 221 transitions. Word has length 78 [2023-12-02 20:08:56,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:08:56,360 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 221 transitions. [2023-12-02 20:08:56,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 20:08:56,360 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 221 transitions. [2023-12-02 20:08:56,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-12-02 20:08:56,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:08:56,362 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:08:56,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-02 20:08:56,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:08:56,571 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:08:56,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:08:56,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1731782028, now seen corresponding path program 1 times [2023-12-02 20:08:56,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 20:08:56,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2047338710] [2023-12-02 20:08:56,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:08:56,573 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 20:08:56,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 20:08:56,574 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:08:56,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:08:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:08:56,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 20:08:56,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:08:57,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 41 [2023-12-02 20:08:57,191 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-02 20:08:57,191 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:08:57,192 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 20:08:57,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2047338710] [2023-12-02 20:08:57,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2047338710] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:08:57,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:08:57,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 20:08:57,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262843889] [2023-12-02 20:08:57,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:08:57,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 20:08:57,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 20:08:57,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 20:08:57,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 20:08:57,196 INFO L87 Difference]: Start difference. First operand 150 states and 221 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 20:08:59,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:09:01,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:09:05,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:09:07,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:09:09,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:09:11,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:09:11,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:09:11,812 INFO L93 Difference]: Finished difference Result 280 states and 411 transitions. [2023-12-02 20:09:11,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 20:09:11,813 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 82 [2023-12-02 20:09:11,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:09:11,815 INFO L225 Difference]: With dead ends: 280 [2023-12-02 20:09:11,815 INFO L226 Difference]: Without dead ends: 162 [2023-12-02 20:09:11,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-02 20:09:11,816 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 115 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 5 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2023-12-02 20:09:11,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 357 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 151 Invalid, 4 Unknown, 0 Unchecked, 14.5s Time] [2023-12-02 20:09:11,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-12-02 20:09:11,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 150. [2023-12-02 20:09:11,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 133 states have (on average 1.4360902255639099) internal successors, (191), 133 states have internal predecessors, (191), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 20:09:11,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 219 transitions. [2023-12-02 20:09:11,828 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 219 transitions. Word has length 82 [2023-12-02 20:09:11,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:09:11,829 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 219 transitions. [2023-12-02 20:09:11,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 20:09:11,829 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 219 transitions. [2023-12-02 20:09:11,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-02 20:09:11,830 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:09:11,830 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:11,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:09:12,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:09:12,031 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:09:12,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:09:12,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1286524922, now seen corresponding path program 1 times [2023-12-02 20:09:12,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 20:09:12,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [45427600] [2023-12-02 20:09:12,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:09:12,033 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 20:09:12,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 20:09:12,034 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:09:12,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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)] Waiting until timeout for monitored process [2023-12-02 20:09:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:09:12,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 20:09:12,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:09:12,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 41 [2023-12-02 20:09:12,611 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-02 20:09:12,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:09:12,611 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 20:09:12,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [45427600] [2023-12-02 20:09:12,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [45427600] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:09:12,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:09:12,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 20:09:12,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593426232] [2023-12-02 20:09:12,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:09:12,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 20:09:12,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 20:09:12,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 20:09:12,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 20:09:12,615 INFO L87 Difference]: Start difference. First operand 150 states and 219 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 20:09:15,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:09:16,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:09:18,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:09:22,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:09:24,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:09:26,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:09:27,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:09:27,936 INFO L93 Difference]: Finished difference Result 273 states and 397 transitions. [2023-12-02 20:09:27,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 20:09:27,937 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 84 [2023-12-02 20:09:27,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:09:27,939 INFO L225 Difference]: With dead ends: 273 [2023-12-02 20:09:27,939 INFO L226 Difference]: Without dead ends: 162 [2023-12-02 20:09:27,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-12-02 20:09:27,940 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 104 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 4 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2023-12-02 20:09:27,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 356 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 153 Invalid, 5 Unknown, 0 Unchecked, 15.2s Time] [2023-12-02 20:09:27,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-12-02 20:09:27,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 150. [2023-12-02 20:09:27,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 133 states have (on average 1.4210526315789473) internal successors, (189), 133 states have internal predecessors, (189), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 20:09:27,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 217 transitions. [2023-12-02 20:09:27,950 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 217 transitions. Word has length 84 [2023-12-02 20:09:27,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:09:27,950 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 217 transitions. [2023-12-02 20:09:27,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 20:09:27,951 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 217 transitions. [2023-12-02 20:09:27,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 20:09:27,952 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:09:27,952 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:27,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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)] Ended with exit code 0 [2023-12-02 20:09:28,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:09:28,153 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:09:28,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:09:28,153 INFO L85 PathProgramCache]: Analyzing trace with hash -2131536460, now seen corresponding path program 1 times [2023-12-02 20:09:28,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 20:09:28,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402294317] [2023-12-02 20:09:28,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:09:28,154 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 20:09:28,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 20:09:28,155 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:09:28,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:09:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:09:28,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-02 20:09:28,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:09:29,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 20:09:30,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2023-12-02 20:09:30,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2023-12-02 20:09:30,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-12-02 20:09:30,752 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 9 proven. 60 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-02 20:09:30,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 20:09:30,967 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 20:09:30,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [402294317] [2023-12-02 20:09:30,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [402294317] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 20:09:30,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2089589410] [2023-12-02 20:09:30,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:09:30,968 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 20:09:30,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 20:09:30,969 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 20:09:30,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-02 20:09:32,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:09:32,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-02 20:09:32,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:09:33,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-12-02 20:09:33,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2023-12-02 20:09:34,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2023-12-02 20:09:34,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2023-12-02 20:09:35,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 33 [2023-12-02 20:09:35,284 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 20:09:35,284 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 20:09:35,491 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-02 20:09:35,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2089589410] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 20:09:35,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 20:09:35,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14, 12] total 28 [2023-12-02 20:09:35,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724453791] [2023-12-02 20:09:35,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:09:35,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 20:09:35,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 20:09:35,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 20:09:35,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=827, Unknown=2, NotChecked=0, Total=930 [2023-12-02 20:09:35,494 INFO L87 Difference]: Start difference. First operand 150 states and 217 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 20:09:37,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:09:39,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:09:42,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:09:44,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:09:46,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:09:48,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:09:50,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:09:52,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:09:52,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:09:52,687 INFO L93 Difference]: Finished difference Result 284 states and 408 transitions. [2023-12-02 20:09:52,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 20:09:52,688 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 86 [2023-12-02 20:09:52,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:09:52,690 INFO L225 Difference]: With dead ends: 284 [2023-12-02 20:09:52,690 INFO L226 Difference]: Without dead ends: 195 [2023-12-02 20:09:52,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=124, Invalid=1064, Unknown=2, NotChecked=0, Total=1190 [2023-12-02 20:09:52,692 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 105 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2023-12-02 20:09:52,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 512 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 139 Invalid, 6 Unknown, 0 Unchecked, 17.0s Time] [2023-12-02 20:09:52,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-12-02 20:09:52,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 170. [2023-12-02 20:09:52,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 153 states have (on average 1.4052287581699345) internal successors, (215), 153 states have internal predecessors, (215), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 20:09:52,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 243 transitions. [2023-12-02 20:09:52,703 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 243 transitions. Word has length 86 [2023-12-02 20:09:52,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:09:52,703 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 243 transitions. [2023-12-02 20:09:52,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 20:09:52,703 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 243 transitions. [2023-12-02 20:09:52,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 20:09:52,704 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:09:52,704 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:52,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2023-12-02 20:09:52,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:09:53,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:09:53,105 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:09:53,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:09:53,105 INFO L85 PathProgramCache]: Analyzing trace with hash -404627127, now seen corresponding path program 1 times [2023-12-02 20:09:53,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 20:09:53,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983207369] [2023-12-02 20:09:53,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:09:53,106 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 20:09:53,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 20:09:53,107 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:09:53,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:09:53,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:09:53,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 20:09:53,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:09:53,419 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-02 20:09:53,420 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:09:53,420 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 20:09:53,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983207369] [2023-12-02 20:09:53,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [983207369] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:09:53,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:09:53,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 20:09:53,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059256200] [2023-12-02 20:09:53,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:09:53,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 20:09:53,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 20:09:53,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 20:09:53,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 20:09:53,422 INFO L87 Difference]: Start difference. First operand 170 states and 243 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 20:09:53,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:09:53,509 INFO L93 Difference]: Finished difference Result 176 states and 249 transitions. [2023-12-02 20:09:53,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 20:09:53,509 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 88 [2023-12-02 20:09:53,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:09:53,511 INFO L225 Difference]: With dead ends: 176 [2023-12-02 20:09:53,511 INFO L226 Difference]: Without dead ends: 174 [2023-12-02 20:09:53,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 20:09:53,512 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 10 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 20:09:53,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 471 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 20:09:53,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-12-02 20:09:53,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 173. [2023-12-02 20:09:53,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 156 states have (on average 1.3974358974358974) internal successors, (218), 156 states have internal predecessors, (218), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 20:09:53,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 246 transitions. [2023-12-02 20:09:53,519 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 246 transitions. Word has length 88 [2023-12-02 20:09:53,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:09:53,520 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 246 transitions. [2023-12-02 20:09:53,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 20:09:53,520 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 246 transitions. [2023-12-02 20:09:53,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 20:09:53,521 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:09:53,521 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:09:53,528 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:09:53,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:09:53,722 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:09:53,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:09:53,722 INFO L85 PathProgramCache]: Analyzing trace with hash 614113694, now seen corresponding path program 1 times [2023-12-02 20:09:53,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 20:09:53,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723260532] [2023-12-02 20:09:53,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:09:53,723 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 20:09:53,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 20:09:53,724 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:09:53,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 (10)] Waiting until timeout for monitored process [2023-12-02 20:09:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:09:53,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 20:09:53,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:09:54,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-02 20:09:54,216 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-02 20:09:54,216 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:09:54,216 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 20:09:54,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723260532] [2023-12-02 20:09:54,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723260532] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:09:54,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:09:54,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 20:09:54,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238849180] [2023-12-02 20:09:54,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:09:54,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 20:09:54,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 20:09:54,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 20:09:54,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 20:09:54,218 INFO L87 Difference]: Start difference. First operand 173 states and 246 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 20:09:56,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:09:58,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:10:00,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:10:02,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:10:04,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:10:07,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:10:09,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:10:11,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:10:13,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:10:15,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:10:15,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:10:15,573 INFO L93 Difference]: Finished difference Result 323 states and 455 transitions. [2023-12-02 20:10:15,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 20:10:15,595 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 88 [2023-12-02 20:10:15,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:10:15,596 INFO L225 Difference]: With dead ends: 323 [2023-12-02 20:10:15,596 INFO L226 Difference]: Without dead ends: 210 [2023-12-02 20:10:15,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 20:10:15,597 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 64 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.3s IncrementalHoareTripleChecker+Time [2023-12-02 20:10:15,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 426 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 10 Unknown, 0 Unchecked, 21.3s Time] [2023-12-02 20:10:15,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-12-02 20:10:15,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 174. [2023-12-02 20:10:15,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 157 states have (on average 1.3821656050955413) internal successors, (217), 157 states have internal predecessors, (217), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 20:10:15,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 245 transitions. [2023-12-02 20:10:15,605 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 245 transitions. Word has length 88 [2023-12-02 20:10:15,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:10:15,606 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 245 transitions. [2023-12-02 20:10:15,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 20:10:15,606 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 245 transitions. [2023-12-02 20:10:15,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 20:10:15,607 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:10:15,607 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:10:15,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 (10)] Ended with exit code 0 [2023-12-02 20:10:15,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:10:15,810 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:10:15,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:10:15,811 INFO L85 PathProgramCache]: Analyzing trace with hash -406954660, now seen corresponding path program 1 times [2023-12-02 20:10:15,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 20:10:15,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314712176] [2023-12-02 20:10:15,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:10:15,811 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 20:10:15,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 20:10:15,812 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:10:15,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:10:16,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:10:16,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 20:10:16,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:10:17,507 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 20:10:17,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 223 treesize of output 125 [2023-12-02 20:10:18,015 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-02 20:10:18,015 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:10:18,015 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 20:10:18,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1314712176] [2023-12-02 20:10:18,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1314712176] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:10:18,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:10:18,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 20:10:18,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202687817] [2023-12-02 20:10:18,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:10:18,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 20:10:18,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 20:10:18,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 20:10:18,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-02 20:10:18,018 INFO L87 Difference]: Start difference. First operand 174 states and 245 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 20:10:20,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:10:22,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:10:27,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:10:30,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:10:33,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:10:35,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:10:37,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:10:39,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:10:41,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:10:45,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:10:47,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:10:49,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:10:53,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:10:55,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:10:58,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:11:00,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:11:01,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:11:01,994 INFO L93 Difference]: Finished difference Result 348 states and 489 transitions. [2023-12-02 20:11:01,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 20:11:01,996 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 88 [2023-12-02 20:11:01,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:11:01,998 INFO L225 Difference]: With dead ends: 348 [2023-12-02 20:11:01,998 INFO L226 Difference]: Without dead ends: 238 [2023-12-02 20:11:01,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-12-02 20:11:01,999 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 85 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 1 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.1s IncrementalHoareTripleChecker+Time [2023-12-02 20:11:01,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 626 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 355 Invalid, 15 Unknown, 0 Unchecked, 42.1s Time] [2023-12-02 20:11:02,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-02 20:11:02,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 200. [2023-12-02 20:11:02,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 183 states have (on average 1.3770491803278688) internal successors, (252), 183 states have internal predecessors, (252), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 20:11:02,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 280 transitions. [2023-12-02 20:11:02,012 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 280 transitions. Word has length 88 [2023-12-02 20:11:02,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:11:02,013 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 280 transitions. [2023-12-02 20:11:02,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 20:11:02,013 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 280 transitions. [2023-12-02 20:11:02,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 20:11:02,014 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:11:02,014 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:11:02,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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)] Forceful destruction successful, exit code 0 [2023-12-02 20:11:02,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:11:02,216 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:11:02,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:11:02,217 INFO L85 PathProgramCache]: Analyzing trace with hash 273103710, now seen corresponding path program 1 times [2023-12-02 20:11:02,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 20:11:02,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1052019678] [2023-12-02 20:11:02,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:11:02,218 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 20:11:02,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 20:11:02,218 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:11:02,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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)] Waiting until timeout for monitored process [2023-12-02 20:11:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:11:02,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 20:11:02,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:11:03,098 INFO L349 Elim1Store]: treesize reduction 15, result has 71.7 percent of original size [2023-12-02 20:11:03,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 178 treesize of output 95 [2023-12-02 20:11:03,360 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-02 20:11:03,361 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:11:03,361 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 20:11:03,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1052019678] [2023-12-02 20:11:03,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1052019678] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:11:03,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:11:03,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 20:11:03,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383951952] [2023-12-02 20:11:03,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:11:03,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 20:11:03,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 20:11:03,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 20:11:03,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 20:11:03,363 INFO L87 Difference]: Start difference. First operand 200 states and 280 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 20:11:06,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:11:08,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:11:10,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:11:11,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:11:13,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:11:16,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:11:18,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:11:20,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:11:21,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:11:23,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:11:25,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:11:27,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:11:29,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:11:32,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:11:34,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:11:37,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:11:38,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:11:39,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:11:39,008 INFO L93 Difference]: Finished difference Result 361 states and 506 transitions. [2023-12-02 20:11:39,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 20:11:39,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 88 [2023-12-02 20:11:39,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:11:39,010 INFO L225 Difference]: With dead ends: 361 [2023-12-02 20:11:39,010 INFO L226 Difference]: Without dead ends: 232 [2023-12-02 20:11:39,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 20:11:39,011 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 72 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 0 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.4s IncrementalHoareTripleChecker+Time [2023-12-02 20:11:39,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 439 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 166 Invalid, 14 Unknown, 0 Unchecked, 35.4s Time] [2023-12-02 20:11:39,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-12-02 20:11:39,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 200. [2023-12-02 20:11:39,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 183 states have (on average 1.3715846994535519) internal successors, (251), 183 states have internal predecessors, (251), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 20:11:39,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 279 transitions. [2023-12-02 20:11:39,021 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 279 transitions. Word has length 88 [2023-12-02 20:11:39,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:11:39,021 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 279 transitions. [2023-12-02 20:11:39,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 20:11:39,022 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 279 transitions. [2023-12-02 20:11:39,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 20:11:39,023 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:11:39,023 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:11:39,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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)] Ended with exit code 0 [2023-12-02 20:11:39,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:11:39,223 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:11:39,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:11:39,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1224603110, now seen corresponding path program 1 times [2023-12-02 20:11:39,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 20:11:39,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539978255] [2023-12-02 20:11:39,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:11:39,225 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 20:11:39,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 20:11:39,225 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:11:39,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:11:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:11:39,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 20:11:39,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:11:39,993 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 20:11:39,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 179 treesize of output 111 [2023-12-02 20:11:40,213 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-02 20:11:40,213 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:11:40,214 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 20:11:40,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539978255] [2023-12-02 20:11:40,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539978255] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:11:40,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:11:40,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 20:11:40,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524635437] [2023-12-02 20:11:40,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:11:40,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 20:11:40,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 20:11:40,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 20:11:40,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 20:11:40,215 INFO L87 Difference]: Start difference. First operand 200 states and 279 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 20:11:42,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:11:44,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:11:46,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:11:47,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:11:50,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:11:52,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:11:54,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:11:56,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:11:58,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:12:00,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:12:03,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:12:05,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:12:08,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:12:10,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:12:12,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:12:12,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:12:12,567 INFO L93 Difference]: Finished difference Result 375 states and 524 transitions. [2023-12-02 20:12:12,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 20:12:12,569 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 88 [2023-12-02 20:12:12,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:12:12,571 INFO L225 Difference]: With dead ends: 375 [2023-12-02 20:12:12,572 INFO L226 Difference]: Without dead ends: 246 [2023-12-02 20:12:12,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 20:12:12,573 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 73 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.1s IncrementalHoareTripleChecker+Time [2023-12-02 20:12:12,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 443 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 173 Invalid, 10 Unknown, 0 Unchecked, 32.1s Time] [2023-12-02 20:12:12,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-12-02 20:12:12,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 212. [2023-12-02 20:12:12,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 195 states have (on average 1.3692307692307693) internal successors, (267), 195 states have internal predecessors, (267), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 20:12:12,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 295 transitions. [2023-12-02 20:12:12,594 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 295 transitions. Word has length 88 [2023-12-02 20:12:12,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:12:12,594 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 295 transitions. [2023-12-02 20:12:12,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 20:12:12,595 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 295 transitions. [2023-12-02 20:12:12,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-02 20:12:12,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:12:12,596 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:12:12,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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)] Forceful destruction successful, exit code 0 [2023-12-02 20:12:12,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:12:12,797 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:12:12,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:12:12,798 INFO L85 PathProgramCache]: Analyzing trace with hash -544544740, now seen corresponding path program 1 times [2023-12-02 20:12:12,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 20:12:12,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [953196688] [2023-12-02 20:12:12,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:12:12,799 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 20:12:12,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 20:12:12,800 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:12:12,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:12:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:12:13,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 20:12:13,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:12:14,013 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 20:12:14,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 178 treesize of output 110 [2023-12-02 20:12:14,396 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-02 20:12:14,396 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:12:14,396 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 20:12:14,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [953196688] [2023-12-02 20:12:14,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [953196688] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:12:14,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:12:14,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 20:12:14,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005285816] [2023-12-02 20:12:14,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:12:14,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 20:12:14,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 20:12:14,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 20:12:14,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-02 20:12:14,399 INFO L87 Difference]: Start difference. First operand 212 states and 295 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 20:12:17,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:12:19,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:12:20,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:12:22,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:12:24,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:12:28,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:12:31,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:12:32,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:12:35,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:12:37,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:12:39,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:12:41,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:12:43,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:12:45,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:12:47,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:12:48,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:12:51,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:12:52,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:12:55,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:12:55,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:12:55,517 INFO L93 Difference]: Finished difference Result 387 states and 539 transitions. [2023-12-02 20:12:55,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 20:12:55,519 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 88 [2023-12-02 20:12:55,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:12:55,521 INFO L225 Difference]: With dead ends: 387 [2023-12-02 20:12:55,521 INFO L226 Difference]: Without dead ends: 246 [2023-12-02 20:12:55,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-02 20:12:55,522 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 85 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 1 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.8s IncrementalHoareTripleChecker+Time [2023-12-02 20:12:55,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 543 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 251 Invalid, 14 Unknown, 0 Unchecked, 40.8s Time] [2023-12-02 20:12:55,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-12-02 20:12:55,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 212. [2023-12-02 20:12:55,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 195 states have (on average 1.3692307692307693) internal successors, (267), 195 states have internal predecessors, (267), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 20:12:55,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 295 transitions. [2023-12-02 20:12:55,530 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 295 transitions. Word has length 88 [2023-12-02 20:12:55,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:12:55,530 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 295 transitions. [2023-12-02 20:12:55,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 20:12:55,530 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 295 transitions. [2023-12-02 20:12:55,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 20:12:55,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:12:55,531 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:12:55,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:12:55,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:12:55,732 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:12:55,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:12:55,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1444604328, now seen corresponding path program 1 times [2023-12-02 20:12:55,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 20:12:55,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2019338480] [2023-12-02 20:12:55,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:12:55,736 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 20:12:55,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 20:12:55,737 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:12:55,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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)] Waiting until timeout for monitored process [2023-12-02 20:12:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:12:56,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 20:12:56,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:12:56,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-02 20:12:56,283 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-02 20:12:56,283 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:12:56,283 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 20:12:56,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2019338480] [2023-12-02 20:12:56,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2019338480] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:12:56,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:12:56,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 20:12:56,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996066914] [2023-12-02 20:12:56,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:12:56,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 20:12:56,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 20:12:56,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 20:12:56,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 20:12:56,286 INFO L87 Difference]: Start difference. First operand 212 states and 295 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 20:12:58,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:13:00,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:13:02,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:13:03,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:13:06,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:13:07,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:13:09,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:13:12,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:13:14,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:13:14,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:13:14,259 INFO L93 Difference]: Finished difference Result 416 states and 573 transitions. [2023-12-02 20:13:14,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 20:13:14,289 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 89 [2023-12-02 20:13:14,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:13:14,291 INFO L225 Difference]: With dead ends: 416 [2023-12-02 20:13:14,291 INFO L226 Difference]: Without dead ends: 275 [2023-12-02 20:13:14,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 20:13:14,292 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 83 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 5 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2023-12-02 20:13:14,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 459 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 89 Invalid, 6 Unknown, 0 Unchecked, 17.9s Time] [2023-12-02 20:13:14,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-12-02 20:13:14,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 230. [2023-12-02 20:13:14,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 213 states have (on average 1.3474178403755868) internal successors, (287), 213 states have internal predecessors, (287), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 20:13:14,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 315 transitions. [2023-12-02 20:13:14,304 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 315 transitions. Word has length 89 [2023-12-02 20:13:14,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:13:14,305 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 315 transitions. [2023-12-02 20:13:14,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 20:13:14,305 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 315 transitions. [2023-12-02 20:13:14,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-02 20:13:14,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:13:14,306 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:13:14,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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)] Ended with exit code 0 [2023-12-02 20:13:14,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:13:14,507 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:13:14,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:13:14,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1315316072, now seen corresponding path program 1 times [2023-12-02 20:13:14,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 20:13:14,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [450636586] [2023-12-02 20:13:14,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:13:14,507 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 20:13:14,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 20:13:14,508 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:13:14,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:13:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:13:14,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 20:13:14,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:13:14,816 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-02 20:13:14,817 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:13:14,817 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 20:13:14,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [450636586] [2023-12-02 20:13:14,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [450636586] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:13:14,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:13:14,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 20:13:14,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536575098] [2023-12-02 20:13:14,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:13:14,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 20:13:14,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 20:13:14,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 20:13:14,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 20:13:14,819 INFO L87 Difference]: Start difference. First operand 230 states and 315 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 20:13:14,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:13:14,988 INFO L93 Difference]: Finished difference Result 385 states and 532 transitions. [2023-12-02 20:13:14,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 20:13:14,989 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 89 [2023-12-02 20:13:14,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:13:14,991 INFO L225 Difference]: With dead ends: 385 [2023-12-02 20:13:14,991 INFO L226 Difference]: Without dead ends: 243 [2023-12-02 20:13:14,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-02 20:13:14,992 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 55 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 20:13:14,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 590 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 20:13:14,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-12-02 20:13:14,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 231. [2023-12-02 20:13:14,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 214 states have (on average 1.3457943925233644) internal successors, (288), 214 states have internal predecessors, (288), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 20:13:15,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 316 transitions. [2023-12-02 20:13:15,000 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 316 transitions. Word has length 89 [2023-12-02 20:13:15,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:13:15,001 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 316 transitions. [2023-12-02 20:13:15,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 20:13:15,001 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 316 transitions. [2023-12-02 20:13:15,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-02 20:13:15,001 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:13:15,001 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:13:15,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:13:15,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:13:15,202 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:13:15,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:13:15,202 INFO L85 PathProgramCache]: Analyzing trace with hash 467557147, now seen corresponding path program 1 times [2023-12-02 20:13:15,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 20:13:15,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922532575] [2023-12-02 20:13:15,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:13:15,203 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 20:13:15,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 20:13:15,204 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:13:15,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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)] Waiting until timeout for monitored process [2023-12-02 20:13:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:13:15,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 20:13:15,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:13:15,845 INFO L349 Elim1Store]: treesize reduction 18, result has 45.5 percent of original size [2023-12-02 20:13:15,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 28 [2023-12-02 20:13:16,183 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-02 20:13:16,183 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:13:16,183 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 20:13:16,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922532575] [2023-12-02 20:13:16,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922532575] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:13:16,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:13:16,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-02 20:13:16,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514597202] [2023-12-02 20:13:16,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:13:16,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 20:13:16,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 20:13:16,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 20:13:16,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-02 20:13:16,186 INFO L87 Difference]: Start difference. First operand 231 states and 316 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 20:13:18,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:13:20,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:13:22,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:13:25,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:13:27,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:13:29,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:13:31,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:13:33,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 20:13:35,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:13:36,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:13:36,661 INFO L93 Difference]: Finished difference Result 528 states and 713 transitions. [2023-12-02 20:13:36,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 20:13:36,662 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 90 [2023-12-02 20:13:36,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:13:36,664 INFO L225 Difference]: With dead ends: 528 [2023-12-02 20:13:36,664 INFO L226 Difference]: Without dead ends: 385 [2023-12-02 20:13:36,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2023-12-02 20:13:36,665 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 124 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 8 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.1s IncrementalHoareTripleChecker+Time [2023-12-02 20:13:36,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 429 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 268 Invalid, 5 Unknown, 0 Unchecked, 20.1s Time] [2023-12-02 20:13:36,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-12-02 20:13:36,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 331. [2023-12-02 20:13:36,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 314 states have (on average 1.3280254777070064) internal successors, (417), 314 states have internal predecessors, (417), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 20:13:36,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 445 transitions. [2023-12-02 20:13:36,682 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 445 transitions. Word has length 90 [2023-12-02 20:13:36,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:13:36,683 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 445 transitions. [2023-12-02 20:13:36,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 20:13:36,683 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 445 transitions. [2023-12-02 20:13:36,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-12-02 20:13:36,684 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:13:36,685 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:13:36,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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)] Forceful destruction successful, exit code 0 [2023-12-02 20:13:36,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:13:36,885 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:13:36,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:13:36,886 INFO L85 PathProgramCache]: Analyzing trace with hash -369871799, now seen corresponding path program 1 times [2023-12-02 20:13:36,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 20:13:36,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1072805487] [2023-12-02 20:13:36,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:13:36,886 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 20:13:36,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 20:13:36,887 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:13:36,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:13:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:13:37,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-02 20:13:37,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:13:37,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2023-12-02 20:13:38,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2023-12-02 20:13:38,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2023-12-02 20:13:39,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2023-12-02 20:13:39,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2023-12-02 20:13:40,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2023-12-02 20:13:40,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2023-12-02 20:13:40,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2023-12-02 20:13:40,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 35 [2023-12-02 20:13:41,115 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 20:13:41,115 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 20:13:41,526 WARN L854 $PredicateComparison]: unable to prove that (forall ((~var_1_13_Pointer~0.offset (_ BitVec 32)) (v_ArrVal_304 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store (store |c_#memory_int| c_~var_1_13_Pointer~0.base (store (select |c_#memory_int| c_~var_1_13_Pointer~0.base) ~var_1_13_Pointer~0.offset ((_ sign_extend 16) ((_ extract 15 0) (select (select |c_#memory_int| c_~var_1_1_Pointer~0.base) c_~var_1_1_Pointer~0.offset))))) c_~var_1_7_Pointer~0.base v_ArrVal_304))) (= ((_ sign_extend 16) ((_ extract 15 0) (select (select .cse0 c_~var_1_1_Pointer~0.base) c_~var_1_1_Pointer~0.offset))) ((_ sign_extend 16) ((_ extract 15 0) (select (select .cse0 c_~var_1_13_Pointer~0.base) ~var_1_13_Pointer~0.offset)))))) is different from false [2023-12-02 20:13:41,591 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 20:13:41,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1072805487] [2023-12-02 20:13:41,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1072805487] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 20:13:41,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [972067962] [2023-12-02 20:13:41,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:13:41,592 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 20:13:41,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 20:13:41,593 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 20:13:41,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2023-12-02 20:13:44,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:13:44,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 20:13:44,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:13:45,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2023-12-02 20:13:45,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-12-02 20:13:46,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 30 [2023-12-02 20:13:46,274 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-02 20:13:46,275 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:13:46,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [972067962] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:13:46,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 20:13:46,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 18 [2023-12-02 20:13:46,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735234458] [2023-12-02 20:13:46,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:13:46,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 20:13:46,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 20:13:46,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 20:13:46,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=460, Unknown=2, NotChecked=44, Total=600 [2023-12-02 20:13:46,277 INFO L87 Difference]: Start difference. First operand 331 states and 445 transitions. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 9 states have internal predecessors, (59), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 20:13:48,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:13:50,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:13:53,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:13:55,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:13:56,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:13:59,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:01,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:03,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:06,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:07,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:09,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:11,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:15,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:18,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:18,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:14:18,712 INFO L93 Difference]: Finished difference Result 500 states and 662 transitions. [2023-12-02 20:14:18,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-02 20:14:18,712 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 9 states have internal predecessors, (59), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 91 [2023-12-02 20:14:18,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:14:18,716 INFO L225 Difference]: With dead ends: 500 [2023-12-02 20:14:18,716 INFO L226 Difference]: Without dead ends: 498 [2023-12-02 20:14:18,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=247, Invalid=1087, Unknown=2, NotChecked=70, Total=1406 [2023-12-02 20:14:18,717 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 261 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 5 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.6s IncrementalHoareTripleChecker+Time [2023-12-02 20:14:18,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 674 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 370 Invalid, 10 Unknown, 0 Unchecked, 31.6s Time] [2023-12-02 20:14:18,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2023-12-02 20:14:18,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 447. [2023-12-02 20:14:18,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 430 states have (on average 1.3255813953488371) internal successors, (570), 430 states have internal predecessors, (570), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 20:14:18,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 598 transitions. [2023-12-02 20:14:18,733 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 598 transitions. Word has length 91 [2023-12-02 20:14:18,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:14:18,734 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 598 transitions. [2023-12-02 20:14:18,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 9 states have internal predecessors, (59), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 20:14:18,734 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 598 transitions. [2023-12-02 20:14:18,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-02 20:14:18,735 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:14:18,735 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:14:18,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:14:18,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2023-12-02 20:14:19,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 20:14:19,136 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:14:19,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:14:19,137 INFO L85 PathProgramCache]: Analyzing trace with hash 929386638, now seen corresponding path program 1 times [2023-12-02 20:14:19,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 20:14:19,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [134120194] [2023-12-02 20:14:19,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:14:19,137 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 20:14:19,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 20:14:19,138 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:14:19,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:14:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:14:19,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 20:14:19,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:14:19,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-12-02 20:14:19,744 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-02 20:14:19,744 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:14:19,744 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 20:14:19,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [134120194] [2023-12-02 20:14:19,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [134120194] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:14:19,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 20:14:19,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 20:14:19,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660751681] [2023-12-02 20:14:19,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:14:19,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 20:14:19,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 20:14:19,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 20:14:19,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 20:14:19,752 INFO L87 Difference]: Start difference. First operand 447 states and 598 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 20:14:19,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:14:19,818 INFO L93 Difference]: Finished difference Result 771 states and 1041 transitions. [2023-12-02 20:14:19,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 20:14:19,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 93 [2023-12-02 20:14:19,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:14:19,820 INFO L225 Difference]: With dead ends: 771 [2023-12-02 20:14:19,820 INFO L226 Difference]: Without dead ends: 447 [2023-12-02 20:14:19,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 91 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 20:14:19,821 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 1 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 20:14:19,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 241 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 20:14:19,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2023-12-02 20:14:19,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2023-12-02 20:14:19,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 430 states have (on average 1.3209302325581396) internal successors, (568), 430 states have internal predecessors, (568), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 20:14:19,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 596 transitions. [2023-12-02 20:14:19,833 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 596 transitions. Word has length 93 [2023-12-02 20:14:19,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:14:19,833 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 596 transitions. [2023-12-02 20:14:19,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 20:14:19,833 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 596 transitions. [2023-12-02 20:14:19,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-02 20:14:19,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:14:19,834 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:14:19,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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)] Forceful destruction successful, exit code 0 [2023-12-02 20:14:20,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:14:20,035 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:14:20,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:14:20,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1069935248, now seen corresponding path program 1 times [2023-12-02 20:14:20,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 20:14:20,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779205290] [2023-12-02 20:14:20,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:14:20,036 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 20:14:20,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 20:14:20,037 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:14:20,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 (21)] Waiting until timeout for monitored process [2023-12-02 20:14:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:14:20,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-02 20:14:20,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:14:20,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2023-12-02 20:14:21,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2023-12-02 20:14:21,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2023-12-02 20:14:22,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2023-12-02 20:14:22,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2023-12-02 20:14:22,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2023-12-02 20:14:23,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2023-12-02 20:14:23,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2023-12-02 20:14:23,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 36 [2023-12-02 20:14:23,799 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 20:14:23,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 20:14:24,183 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_372 (Array (_ BitVec 32) (_ BitVec 32))) (~var_1_13_Pointer~0.offset (_ BitVec 32))) (let ((.cse0 (store (store |c_#memory_int| c_~var_1_13_Pointer~0.base (store (select |c_#memory_int| c_~var_1_13_Pointer~0.base) ~var_1_13_Pointer~0.offset ((_ sign_extend 16) ((_ extract 15 0) |c_ULTIMATE.start_step_#t~ite14#1|)))) c_~var_1_7_Pointer~0.base v_ArrVal_372))) (= ((_ sign_extend 16) ((_ extract 15 0) (select (select .cse0 c_~var_1_13_Pointer~0.base) ~var_1_13_Pointer~0.offset))) ((_ sign_extend 16) ((_ extract 15 0) (select (select .cse0 c_~var_1_1_Pointer~0.base) c_~var_1_1_Pointer~0.offset)))))) is different from false [2023-12-02 20:14:24,199 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_372 (Array (_ BitVec 32) (_ BitVec 32))) (~var_1_13_Pointer~0.offset (_ BitVec 32))) (let ((.cse0 (store (store |c_#memory_int| c_~var_1_13_Pointer~0.base (store (select |c_#memory_int| c_~var_1_13_Pointer~0.base) ~var_1_13_Pointer~0.offset ((_ sign_extend 16) ((_ extract 15 0) ((_ zero_extend 16) ((_ extract 15 0) (select (select |c_#memory_int| c_~var_1_1_Pointer~0.base) c_~var_1_1_Pointer~0.offset))))))) c_~var_1_7_Pointer~0.base v_ArrVal_372))) (= ((_ sign_extend 16) ((_ extract 15 0) (select (select .cse0 c_~var_1_13_Pointer~0.base) ~var_1_13_Pointer~0.offset))) ((_ sign_extend 16) ((_ extract 15 0) (select (select .cse0 c_~var_1_1_Pointer~0.base) c_~var_1_1_Pointer~0.offset)))))) is different from false [2023-12-02 20:14:24,265 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 20:14:24,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779205290] [2023-12-02 20:14:24,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [779205290] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 20:14:24,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [358658986] [2023-12-02 20:14:24,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:14:24,265 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 20:14:24,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 20:14:24,266 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 20:14:24,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2023-12-02 20:14:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:14:27,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-02 20:14:27,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:14:27,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2023-12-02 20:14:28,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2023-12-02 20:14:28,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2023-12-02 20:14:28,466 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-02 20:14:28,466 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 20:14:28,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [358658986] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 20:14:28,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 20:14:28,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 20 [2023-12-02 20:14:28,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687454548] [2023-12-02 20:14:28,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 20:14:28,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 20:14:28,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 20:14:28,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 20:14:28,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=551, Unknown=3, NotChecked=98, Total=756 [2023-12-02 20:14:28,468 INFO L87 Difference]: Start difference. First operand 447 states and 596 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 states have internal predecessors, (61), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 20:14:30,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:31,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:34,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:36,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:38,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:40,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:42,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:45,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:47,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:49,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:51,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:53,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:55,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:14:59,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:15:01,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:15:03,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:15:05,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:15:07,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 20:15:07,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 20:15:07,837 INFO L93 Difference]: Finished difference Result 525 states and 693 transitions. [2023-12-02 20:15:07,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-02 20:15:07,837 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 states have internal predecessors, (61), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 93 [2023-12-02 20:15:07,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 20:15:07,841 INFO L225 Difference]: With dead ends: 525 [2023-12-02 20:15:07,841 INFO L226 Difference]: Without dead ends: 523 [2023-12-02 20:15:07,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=257, Invalid=1230, Unknown=3, NotChecked=150, Total=1640 [2023-12-02 20:15:07,843 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 198 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 5 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.4s IncrementalHoareTripleChecker+Time [2023-12-02 20:15:07,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 791 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 510 Invalid, 15 Unknown, 0 Unchecked, 38.4s Time] [2023-12-02 20:15:07,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2023-12-02 20:15:07,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 332. [2023-12-02 20:15:07,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 315 states have (on average 1.3206349206349206) internal successors, (416), 315 states have internal predecessors, (416), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 20:15:07,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 444 transitions. [2023-12-02 20:15:07,868 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 444 transitions. Word has length 93 [2023-12-02 20:15:07,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 20:15:07,869 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 444 transitions. [2023-12-02 20:15:07,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 states have internal predecessors, (61), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-02 20:15:07,869 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 444 transitions. [2023-12-02 20:15:07,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-02 20:15:07,870 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 20:15:07,870 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:15:07,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2023-12-02 20:15:08,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 (21)] Forceful destruction successful, exit code 0 [2023-12-02 20:15:08,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:15:08,273 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 20:15:08,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 20:15:08,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1230109072, now seen corresponding path program 1 times [2023-12-02 20:15:08,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 20:15:08,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698474784] [2023-12-02 20:15:08,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:15:08,274 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 20:15:08,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 20:15:08,275 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:15:08,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/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 20:15:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 20:15:09,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-02 20:15:09,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 20:15:09,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2023-12-02 20:15:09,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2023-12-02 20:15:10,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2023-12-02 20:15:10,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2023-12-02 20:15:11,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2023-12-02 20:15:11,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2023-12-02 20:15:11,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2023-12-02 20:15:11,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2023-12-02 20:15:12,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2023-12-02 20:15:12,528 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 20:15:12,528 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 20:15:13,145 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_421 (Array (_ BitVec 32) (_ BitVec 32))) (~var_1_13_Pointer~0.offset (_ BitVec 32))) (let ((.cse0 (store (store |c_#memory_int| c_~var_1_13_Pointer~0.base (store (select |c_#memory_int| c_~var_1_13_Pointer~0.base) ~var_1_13_Pointer~0.offset ((_ sign_extend 16) ((_ extract 15 0) (select (select |c_#memory_int| c_~var_1_1_Pointer~0.base) c_~var_1_1_Pointer~0.offset))))) c_~var_1_7_Pointer~0.base v_ArrVal_421))) (= ((_ sign_extend 16) ((_ extract 15 0) ((_ zero_extend 16) ((_ extract 15 0) (select (select .cse0 c_~var_1_1_Pointer~0.base) c_~var_1_1_Pointer~0.offset))))) ((_ sign_extend 16) ((_ extract 15 0) (select (select .cse0 c_~var_1_13_Pointer~0.base) ~var_1_13_Pointer~0.offset)))))) is different from false [2023-12-02 20:15:13,213 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 20:15:13,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [698474784] [2023-12-02 20:15:13,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [698474784] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 20:15:13,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1149712826] [2023-12-02 20:15:13,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 20:15:13,213 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 20:15:13,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 20:15:13,215 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 20:15:13,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52dcfd49-f60a-4932-9ab1-d9d079efd462/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process