./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-25.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_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-25.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 153786ff23d1f4ad1fa22216334d8f153d923a58dff5067a8f60a9c72819150b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:23:05,708 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:23:05,772 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 16:23:05,776 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:23:05,776 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:23:05,801 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:23:05,801 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:23:05,802 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:23:05,803 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:23:05,803 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:23:05,804 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:23:05,804 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:23:05,805 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:23:05,805 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:23:05,806 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:23:05,806 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:23:05,807 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:23:05,807 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:23:05,808 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:23:05,808 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:23:05,809 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:23:05,810 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:23:05,810 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:23:05,811 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:23:05,811 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:23:05,812 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:23:05,812 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:23:05,812 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:23:05,813 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:23:05,813 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:23:05,814 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:23:05,814 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:23:05,814 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:23:05,815 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:23:05,815 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:23:05,816 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:23:05,816 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:23:05,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:23:05,816 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:23:05,817 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:23:05,817 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:23:05,817 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:23:05,817 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:23:05,818 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:23:05,818 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:23:05,818 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:23:05,818 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:23:05,818 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_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 153786ff23d1f4ad1fa22216334d8f153d923a58dff5067a8f60a9c72819150b [2023-12-02 16:23:06,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:23:06,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:23:06,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:23:06,073 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:23:06,073 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:23:06,074 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-25.i [2023-12-02 16:23:08,843 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:23:09,030 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:23:09,031 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-25.i [2023-12-02 16:23:09,039 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/data/55178f923/4b12019bc6284283a062d0f1dd6cf3a7/FLAGc5793a874 [2023-12-02 16:23:09,050 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/data/55178f923/4b12019bc6284283a062d0f1dd6cf3a7 [2023-12-02 16:23:09,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:23:09,054 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:23:09,055 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:23:09,055 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:23:09,058 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:23:09,059 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:23:09" (1/1) ... [2023-12-02 16:23:09,060 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77bed8de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:09, skipping insertion in model container [2023-12-02 16:23:09,060 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:23:09" (1/1) ... [2023-12-02 16:23:09,086 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:23:09,199 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_1c0cc785-eabc-40de-aaa4-6a0123611bd2/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-25.i[916,929] [2023-12-02 16:23:09,268 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:23:09,278 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:23:09,287 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_1c0cc785-eabc-40de-aaa4-6a0123611bd2/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-25.i[916,929] [2023-12-02 16:23:09,333 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:23:09,348 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:23:09,349 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:09 WrapperNode [2023-12-02 16:23:09,349 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:23:09,349 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:23:09,350 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:23:09,350 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:23:09,355 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:09" (1/1) ... [2023-12-02 16:23:09,371 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:09" (1/1) ... [2023-12-02 16:23:09,414 INFO L138 Inliner]: procedures = 29, calls = 179, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 492 [2023-12-02 16:23:09,414 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:23:09,415 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:23:09,415 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:23:09,415 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:23:09,422 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:09" (1/1) ... [2023-12-02 16:23:09,422 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:09" (1/1) ... [2023-12-02 16:23:09,428 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:09" (1/1) ... [2023-12-02 16:23:09,428 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:09" (1/1) ... [2023-12-02 16:23:09,448 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:09" (1/1) ... [2023-12-02 16:23:09,454 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:09" (1/1) ... [2023-12-02 16:23:09,458 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:09" (1/1) ... [2023-12-02 16:23:09,461 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:09" (1/1) ... [2023-12-02 16:23:09,467 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:23:09,468 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:23:09,468 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:23:09,469 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:23:09,469 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:09" (1/1) ... [2023-12-02 16:23:09,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:23:09,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:23:09,503 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:23:09,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:23:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:23:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 16:23:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-12-02 16:23:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-12-02 16:23:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 16:23:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-12-02 16:23:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 16:23:09,537 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 16:23:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 16:23:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:23:09,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:23:09,651 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:23:09,653 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:23:10,136 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:23:10,812 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:23:10,812 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 16:23:10,814 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:23:10 BoogieIcfgContainer [2023-12-02 16:23:10,814 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:23:10,817 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:23:10,817 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:23:10,819 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:23:10,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:23:09" (1/3) ... [2023-12-02 16:23:10,820 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64262bb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:23:10, skipping insertion in model container [2023-12-02 16:23:10,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:09" (2/3) ... [2023-12-02 16:23:10,821 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64262bb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:23:10, skipping insertion in model container [2023-12-02 16:23:10,821 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:23:10" (3/3) ... [2023-12-02 16:23:10,822 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-25.i [2023-12-02 16:23:10,837 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:23:10,837 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 16:23:10,878 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:23:10,883 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;@4fe543c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:23:10,884 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 16:23:10,887 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 16:23:10,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-02 16:23:10,898 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:23:10,899 INFO L195 NwaCegarLoop]: trace histogram [18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:23:10,899 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:23:10,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:23:10,904 INFO L85 PathProgramCache]: Analyzing trace with hash 792518225, now seen corresponding path program 1 times [2023-12-02 16:23:10,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:23:10,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433419468] [2023-12-02 16:23:10,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:23:10,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:23:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 16:23:12,524 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 16:23:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 16:23:13,642 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 16:23:13,644 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 16:23:13,646 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 16:23:13,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 16:23:13,653 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 16:23:13,657 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 16:23:13,696 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem52 could not be translated [2023-12-02 16:23:13,700 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem52 could not be translated [2023-12-02 16:23:13,700 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem53 could not be translated [2023-12-02 16:23:13,701 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem53 could not be translated [2023-12-02 16:23:13,701 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem55 could not be translated [2023-12-02 16:23:13,701 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem55 could not be translated [2023-12-02 16:23:13,702 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem56 could not be translated [2023-12-02 16:23:13,702 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem56 could not be translated [2023-12-02 16:23:13,703 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem58 could not be translated [2023-12-02 16:23:13,703 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem58 could not be translated [2023-12-02 16:23:13,703 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem59 could not be translated [2023-12-02 16:23:13,704 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem59 could not be translated [2023-12-02 16:23:13,704 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem64 could not be translated [2023-12-02 16:23:13,705 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short66 could not be translated [2023-12-02 16:23:13,705 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short67 could not be translated [2023-12-02 16:23:13,705 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem61 could not be translated [2023-12-02 16:23:13,705 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short63 could not be translated [2023-12-02 16:23:13,705 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem62 could not be translated [2023-12-02 16:23:13,706 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem65 could not be translated [2023-12-02 16:23:13,706 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short66 could not be translated [2023-12-02 16:23:13,706 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem62 could not be translated [2023-12-02 16:23:13,706 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem65 could not be translated [2023-12-02 16:23:13,707 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem61 could not be translated [2023-12-02 16:23:13,707 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem64 could not be translated [2023-12-02 16:23:13,707 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short67 could not be translated [2023-12-02 16:23:13,707 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short63 could not be translated [2023-12-02 16:23:13,708 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem70 could not be translated [2023-12-02 16:23:13,708 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem73 could not be translated [2023-12-02 16:23:13,708 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short71 could not be translated [2023-12-02 16:23:13,708 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem72 could not be translated [2023-12-02 16:23:13,709 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short75 could not be translated [2023-12-02 16:23:13,709 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem69 could not be translated [2023-12-02 16:23:13,709 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short74 could not be translated [2023-12-02 16:23:13,709 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem73 could not be translated [2023-12-02 16:23:13,710 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short74 could not be translated [2023-12-02 16:23:13,710 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem69 could not be translated [2023-12-02 16:23:13,710 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem70 could not be translated [2023-12-02 16:23:13,710 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem72 could not be translated [2023-12-02 16:23:13,710 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short75 could not be translated [2023-12-02 16:23:13,711 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short71 could not be translated [2023-12-02 16:23:13,711 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem77 could not be translated [2023-12-02 16:23:13,712 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem77 could not be translated [2023-12-02 16:23:13,712 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem78 could not be translated [2023-12-02 16:23:13,713 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem78 could not be translated [2023-12-02 16:23:13,713 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem80 could not be translated [2023-12-02 16:23:13,713 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem80 could not be translated [2023-12-02 16:23:13,714 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem81 could not be translated [2023-12-02 16:23:13,714 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem81 could not be translated [2023-12-02 16:23:13,715 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem83 could not be translated [2023-12-02 16:23:13,715 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem83 could not be translated [2023-12-02 16:23:13,716 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem84 could not be translated [2023-12-02 16:23:13,716 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem84 could not be translated [2023-12-02 16:23:13,717 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem86 could not be translated [2023-12-02 16:23:13,717 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem86 could not be translated [2023-12-02 16:23:13,717 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem87 could not be translated [2023-12-02 16:23:13,718 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem87 could not be translated [2023-12-02 16:23:13,718 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem89 could not be translated [2023-12-02 16:23:13,719 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem89 could not be translated [2023-12-02 16:23:13,719 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem90 could not be translated [2023-12-02 16:23:13,720 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem90 could not be translated [2023-12-02 16:23:13,740 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 04:23:13 BoogieIcfgContainer [2023-12-02 16:23:13,740 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 16:23:13,741 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 16:23:13,741 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 16:23:13,741 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 16:23:13,742 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:23:10" (3/4) ... [2023-12-02 16:23:13,744 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 16:23:13,745 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 16:23:13,746 INFO L158 Benchmark]: Toolchain (without parser) took 4692.47ms. Allocated memory was 142.6MB in the beginning and 283.1MB in the end (delta: 140.5MB). Free memory was 110.9MB in the beginning and 229.5MB in the end (delta: -118.5MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. [2023-12-02 16:23:13,747 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 100.7MB. Free memory is still 53.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:23:13,747 INFO L158 Benchmark]: CACSL2BoogieTranslator took 294.29ms. Allocated memory is still 142.6MB. Free memory was 110.5MB in the beginning and 94.8MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-12-02 16:23:13,748 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.87ms. Allocated memory is still 142.6MB. Free memory was 94.8MB in the beginning and 90.7MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 16:23:13,749 INFO L158 Benchmark]: Boogie Preprocessor took 52.52ms. Allocated memory is still 142.6MB. Free memory was 90.7MB in the beginning and 86.9MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 16:23:13,749 INFO L158 Benchmark]: RCFGBuilder took 1346.11ms. Allocated memory was 142.6MB in the beginning and 180.4MB in the end (delta: 37.7MB). Free memory was 86.9MB in the beginning and 101.9MB in the end (delta: -15.0MB). Peak memory consumption was 52.0MB. Max. memory is 16.1GB. [2023-12-02 16:23:13,750 INFO L158 Benchmark]: TraceAbstraction took 2923.73ms. Allocated memory was 180.4MB in the beginning and 283.1MB in the end (delta: 102.8MB). Free memory was 100.9MB in the beginning and 229.5MB in the end (delta: -128.6MB). Peak memory consumption was 106.3MB. Max. memory is 16.1GB. [2023-12-02 16:23:13,751 INFO L158 Benchmark]: Witness Printer took 4.22ms. Allocated memory is still 283.1MB. Free memory is still 229.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 16:23:13,754 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 100.7MB. Free memory is still 53.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 294.29ms. Allocated memory is still 142.6MB. Free memory was 110.5MB in the beginning and 94.8MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.87ms. Allocated memory is still 142.6MB. Free memory was 94.8MB in the beginning and 90.7MB in the end (delta: 4.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.52ms. Allocated memory is still 142.6MB. Free memory was 90.7MB in the beginning and 86.9MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1346.11ms. Allocated memory was 142.6MB in the beginning and 180.4MB in the end (delta: 37.7MB). Free memory was 86.9MB in the beginning and 101.9MB in the end (delta: -15.0MB). Peak memory consumption was 52.0MB. Max. memory is 16.1GB. * TraceAbstraction took 2923.73ms. Allocated memory was 180.4MB in the beginning and 283.1MB in the end (delta: 102.8MB). Free memory was 100.9MB in the beginning and 229.5MB in the end (delta: -128.6MB). Peak memory consumption was 106.3MB. Max. memory is 16.1GB. * Witness Printer took 4.22ms. Allocated memory is still 283.1MB. Free memory is still 229.5MB. 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~mem52 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem52 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem53 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem53 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem55 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem55 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem56 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem56 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem58 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem58 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem59 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem59 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem64 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short66 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short67 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem61 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short63 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem62 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem65 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short66 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem62 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem65 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem61 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem64 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short67 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short63 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem70 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem73 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short71 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem72 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short75 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem69 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short74 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem73 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short74 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem69 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem70 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem72 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short75 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short71 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem77 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem77 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem78 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem78 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem80 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem80 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem81 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem81 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem83 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem83 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem84 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem84 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem86 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem86 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem87 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem87 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem89 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem89 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem90 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem90 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 someBinaryFLOATComparisonOperation at line 37. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22-L24] unsigned char BOOL_unsigned_char_Array_0[2][2] = { {1, 1}, {0, 0} }; [L25-L27] float float_Array_0[2][2] = { {63.363, 128.9}, {4.575, 25.5} }; [L28-L30] unsigned long int unsigned_long_int_Array_0[2][2] = { {10, 0}, {1509114200, 256} }; [L31-L33] unsigned short int unsigned_short_int_Array_0[2] = { 500, 10 }; [L105] isInitial = 1 [L106] FCALL initially() [L107] COND TRUE 1 [L108] FCALL updateLastVariables() [L109] CALL updateVariables() [L69] BOOL_unsigned_char_Array_0[1][0] = __VERIFIER_nondet_uchar() [L70] EXPR BOOL_unsigned_char_Array_0[1][0] VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L70] CALL assume_abort_if_not(BOOL_unsigned_char_Array_0[1][0] >= 0) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L20] COND FALSE !(!cond) [L70] RET assume_abort_if_not(BOOL_unsigned_char_Array_0[1][0] >= 0) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L71] EXPR BOOL_unsigned_char_Array_0[1][0] VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L71] CALL assume_abort_if_not(BOOL_unsigned_char_Array_0[1][0] <= 1) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L20] COND FALSE !(!cond) [L71] RET assume_abort_if_not(BOOL_unsigned_char_Array_0[1][0] <= 1) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L72] BOOL_unsigned_char_Array_0[0][1] = __VERIFIER_nondet_uchar() [L73] EXPR BOOL_unsigned_char_Array_0[0][1] VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L73] CALL assume_abort_if_not(BOOL_unsigned_char_Array_0[0][1] >= 1) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not(BOOL_unsigned_char_Array_0[0][1] >= 1) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L74] EXPR BOOL_unsigned_char_Array_0[0][1] VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L74] CALL assume_abort_if_not(BOOL_unsigned_char_Array_0[0][1] <= 1) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L20] COND FALSE !(!cond) [L74] RET assume_abort_if_not(BOOL_unsigned_char_Array_0[0][1] <= 1) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L75] BOOL_unsigned_char_Array_0[1][1] = __VERIFIER_nondet_uchar() [L76] EXPR BOOL_unsigned_char_Array_0[1][1] VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L76] CALL assume_abort_if_not(BOOL_unsigned_char_Array_0[1][1] >= 0) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L20] COND FALSE !(!cond) [L76] RET assume_abort_if_not(BOOL_unsigned_char_Array_0[1][1] >= 0) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L77] EXPR BOOL_unsigned_char_Array_0[1][1] VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L77] CALL assume_abort_if_not(BOOL_unsigned_char_Array_0[1][1] <= 1) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L20] COND FALSE !(!cond) [L77] RET assume_abort_if_not(BOOL_unsigned_char_Array_0[1][1] <= 1) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L78] float_Array_0[0][0] = __VERIFIER_nondet_float() [L79] EXPR float_Array_0[0][0] [L79] EXPR float_Array_0[0][0] >= -922337.2036854765600e+13F && float_Array_0[0][0] <= -1.0e-20F [L79] EXPR (float_Array_0[0][0] >= -922337.2036854765600e+13F && float_Array_0[0][0] <= -1.0e-20F) || (float_Array_0[0][0] <= 9223372.036854765600e+12F && float_Array_0[0][0] >= 1.0e-20F ) [L79] EXPR float_Array_0[0][0] [L79] EXPR float_Array_0[0][0] <= 9223372.036854765600e+12F && float_Array_0[0][0] >= 1.0e-20F [L79] EXPR float_Array_0[0][0] [L79] EXPR float_Array_0[0][0] <= 9223372.036854765600e+12F && float_Array_0[0][0] >= 1.0e-20F [L79] EXPR (float_Array_0[0][0] >= -922337.2036854765600e+13F && float_Array_0[0][0] <= -1.0e-20F) || (float_Array_0[0][0] <= 9223372.036854765600e+12F && float_Array_0[0][0] >= 1.0e-20F ) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L79] CALL assume_abort_if_not((float_Array_0[0][0] >= -922337.2036854765600e+13F && float_Array_0[0][0] <= -1.0e-20F) || (float_Array_0[0][0] <= 9223372.036854765600e+12F && float_Array_0[0][0] >= 1.0e-20F )) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L20] COND FALSE !(!cond) [L79] RET assume_abort_if_not((float_Array_0[0][0] >= -922337.2036854765600e+13F && float_Array_0[0][0] <= -1.0e-20F) || (float_Array_0[0][0] <= 9223372.036854765600e+12F && float_Array_0[0][0] >= 1.0e-20F )) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L80] float_Array_0[1][0] = __VERIFIER_nondet_float() [L81] EXPR float_Array_0[1][0] [L81] EXPR float_Array_0[1][0] >= -922337.2036854765600e+13F && float_Array_0[1][0] <= -1.0e-20F [L81] EXPR float_Array_0[1][0] [L81] EXPR float_Array_0[1][0] >= -922337.2036854765600e+13F && float_Array_0[1][0] <= -1.0e-20F [L81] EXPR (float_Array_0[1][0] >= -922337.2036854765600e+13F && float_Array_0[1][0] <= -1.0e-20F) || (float_Array_0[1][0] <= 9223372.036854765600e+12F && float_Array_0[1][0] >= 1.0e-20F ) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L81] CALL assume_abort_if_not((float_Array_0[1][0] >= -922337.2036854765600e+13F && float_Array_0[1][0] <= -1.0e-20F) || (float_Array_0[1][0] <= 9223372.036854765600e+12F && float_Array_0[1][0] >= 1.0e-20F )) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L20] COND FALSE !(!cond) [L81] RET assume_abort_if_not((float_Array_0[1][0] >= -922337.2036854765600e+13F && float_Array_0[1][0] <= -1.0e-20F) || (float_Array_0[1][0] <= 9223372.036854765600e+12F && float_Array_0[1][0] >= 1.0e-20F )) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L82] unsigned_long_int_Array_0[0][0] = __VERIFIER_nondet_ulong() [L83] EXPR unsigned_long_int_Array_0[0][0] VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L83] CALL assume_abort_if_not(unsigned_long_int_Array_0[0][0] >= 0) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L20] COND FALSE !(!cond) [L83] RET assume_abort_if_not(unsigned_long_int_Array_0[0][0] >= 0) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L84] EXPR unsigned_long_int_Array_0[0][0] VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L84] CALL assume_abort_if_not(unsigned_long_int_Array_0[0][0] <= 1073741823) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L20] COND FALSE !(!cond) [L84] RET assume_abort_if_not(unsigned_long_int_Array_0[0][0] <= 1073741823) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L85] unsigned_long_int_Array_0[1][0] = __VERIFIER_nondet_ulong() [L86] EXPR unsigned_long_int_Array_0[1][0] VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L86] CALL assume_abort_if_not(unsigned_long_int_Array_0[1][0] >= 1073741823) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L20] COND FALSE !(!cond) [L86] RET assume_abort_if_not(unsigned_long_int_Array_0[1][0] >= 1073741823) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L87] EXPR unsigned_long_int_Array_0[1][0] VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L87] CALL assume_abort_if_not(unsigned_long_int_Array_0[1][0] <= 2147483647) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L20] COND FALSE !(!cond) [L87] RET assume_abort_if_not(unsigned_long_int_Array_0[1][0] <= 2147483647) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L88] unsigned_long_int_Array_0[0][1] = __VERIFIER_nondet_ulong() [L89] EXPR unsigned_long_int_Array_0[0][1] VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L89] CALL assume_abort_if_not(unsigned_long_int_Array_0[0][1] >= 0) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L20] COND FALSE !(!cond) [L89] RET assume_abort_if_not(unsigned_long_int_Array_0[0][1] >= 0) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L90] EXPR unsigned_long_int_Array_0[0][1] VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L90] CALL assume_abort_if_not(unsigned_long_int_Array_0[0][1] <= 1073741823) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L20] COND FALSE !(!cond) [L90] RET assume_abort_if_not(unsigned_long_int_Array_0[0][1] <= 1073741823) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L91] unsigned_short_int_Array_0[0] = __VERIFIER_nondet_ushort() [L92] EXPR unsigned_short_int_Array_0[0] VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L92] CALL assume_abort_if_not(unsigned_short_int_Array_0[0] >= 0) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L20] COND FALSE !(!cond) [L92] RET assume_abort_if_not(unsigned_short_int_Array_0[0] >= 0) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L93] EXPR unsigned_short_int_Array_0[0] VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L93] CALL assume_abort_if_not(unsigned_short_int_Array_0[0] <= 65535) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L20] COND FALSE !(!cond) [L93] RET assume_abort_if_not(unsigned_short_int_Array_0[0] <= 65535) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L94] unsigned_short_int_Array_0[1] = __VERIFIER_nondet_ushort() [L95] EXPR unsigned_short_int_Array_0[1] VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L95] CALL assume_abort_if_not(unsigned_short_int_Array_0[1] >= 0) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L20] COND FALSE !(!cond) [L95] RET assume_abort_if_not(unsigned_short_int_Array_0[1] >= 0) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L96] EXPR unsigned_short_int_Array_0[1] VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L96] CALL assume_abort_if_not(unsigned_short_int_Array_0[1] <= 65535) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L20] COND FALSE !(!cond) [L96] RET assume_abort_if_not(unsigned_short_int_Array_0[1] <= 65535) VAL [BOOL_unsigned_char_Array_0={4:0}, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L109] RET updateVariables() [L110] CALL step() [L37] EXPR float_Array_0[0][0] [L37] EXPR float_Array_0[1][0] [L37] COND TRUE float_Array_0[0][0] != float_Array_0[1][0] [L38] EXPR BOOL_unsigned_char_Array_0[1][1] [L38] BOOL_unsigned_char_Array_0[1][1] || BOOL_unsigned_char_Array_0[1][0] [L38] EXPR BOOL_unsigned_char_Array_0[1][0] [L38] BOOL_unsigned_char_Array_0[1][1] || BOOL_unsigned_char_Array_0[1][0] [L38] COND TRUE BOOL_unsigned_char_Array_0[1][1] || BOOL_unsigned_char_Array_0[1][0] [L39] EXPR BOOL_unsigned_char_Array_0[1][0] [L39] EXPR BOOL_unsigned_char_Array_0[1][0] || BOOL_unsigned_char_Array_0[0][1] [L39] BOOL_unsigned_char_Array_0[0][0] = (BOOL_unsigned_char_Array_0[1][0] || BOOL_unsigned_char_Array_0[0][1]) [L46] EXPR unsigned_short_int_Array_0[1] [L46] unsigned short int stepLocal_0 = unsigned_short_int_Array_0[1]; [L47] BOOL_unsigned_char_Array_0[0][0] [L47] COND TRUE BOOL_unsigned_char_Array_0[0][0] [L48] EXPR unsigned_short_int_Array_0[0] [L48] COND FALSE !(stepLocal_0 <= unsigned_short_int_Array_0[0]) [L54] EXPR unsigned_long_int_Array_0[1][1] [L54] unsigned long int stepLocal_1 = unsigned_long_int_Array_0[1][1]; [L55] EXPR unsigned_long_int_Array_0[0][0] [L55] COND TRUE unsigned_long_int_Array_0[0][0] >= stepLocal_1 [L56] EXPR float_Array_0[0][0] [L56] EXPR ((0.5f) < (float_Array_0[0][0])) ? (0.5f) : (float_Array_0[0][0]) [L56] EXPR float_Array_0[0][0] [L56] EXPR ((0.5f) < (float_Array_0[0][0])) ? (0.5f) : (float_Array_0[0][0]) [L56] float_Array_0[0][1] = ((((0.5f) < (float_Array_0[0][0])) ? (0.5f) : (float_Array_0[0][0]))) [L60] EXPR float_Array_0[1][0] [L60] EXPR float_Array_0[0][0] [L60] EXPR ((128.175f) > (float_Array_0[0][0])) ? (128.175f) : (float_Array_0[0][0]) [L60] EXPR float_Array_0[0][1] [L60] EXPR ((((((128.175f) > (float_Array_0[0][0])) ? (128.175f) : (float_Array_0[0][0])))) < (float_Array_0[0][1])) ? (((((128.175f) > (float_Array_0[0][0])) ? (128.175f) : (float_Array_0[0][0])))) : (float_Array_0[0][1]) [L60] EXPR float_Array_0[0][0] [L60] EXPR ((128.175f) > (float_Array_0[0][0])) ? (128.175f) : (float_Array_0[0][0]) [L60] EXPR ((((((128.175f) > (float_Array_0[0][0])) ? (128.175f) : (float_Array_0[0][0])))) < (float_Array_0[0][1])) ? (((((128.175f) > (float_Array_0[0][0])) ? (128.175f) : (float_Array_0[0][0])))) : (float_Array_0[0][1]) [L60] COND FALSE !(float_Array_0[1][0] >= ((((((((128.175f) > (float_Array_0[0][0])) ? (128.175f) : (float_Array_0[0][0])))) < (float_Array_0[0][1])) ? (((((128.175f) > (float_Array_0[0][0])) ? (128.175f) : (float_Array_0[0][0])))) : (float_Array_0[0][1])))) [L63] EXPR unsigned_long_int_Array_0[0][0] [L63] EXPR unsigned_long_int_Array_0[1][0] [L63] COND FALSE !(! (unsigned_long_int_Array_0[0][0] <= unsigned_long_int_Array_0[1][0])) [L110] RET step() [L111] CALL, EXPR property() [L101] EXPR BOOL_unsigned_char_Array_0[0][0] [L101] EXPR BOOL_unsigned_char_Array_0[0][0] ? ((unsigned_short_int_Array_0[1] <= unsigned_short_int_Array_0[0]) ? (unsigned_long_int_Array_0[1][1] == ((unsigned long int) (((((unsigned_short_int_Array_0[1]) > ((unsigned_short_int_Array_0[0] + unsigned_long_int_Array_0[0][1]))) ? (unsigned_short_int_Array_0[1]) : ((unsigned_short_int_Array_0[0] + unsigned_long_int_Array_0[0][1])))) + (unsigned_long_int_Array_0[1][0] - unsigned_long_int_Array_0[0][0])))) : 1) : (unsigned_long_int_Array_0[1][1] == ((unsigned long int) unsigned_long_int_Array_0[0][0])) [L101] EXPR unsigned_short_int_Array_0[1] [L101] EXPR unsigned_short_int_Array_0[0] [L101] EXPR (unsigned_short_int_Array_0[1] <= unsigned_short_int_Array_0[0]) ? (unsigned_long_int_Array_0[1][1] == ((unsigned long int) (((((unsigned_short_int_Array_0[1]) > ((unsigned_short_int_Array_0[0] + unsigned_long_int_Array_0[0][1]))) ? (unsigned_short_int_Array_0[1]) : ((unsigned_short_int_Array_0[0] + unsigned_long_int_Array_0[0][1])))) + (unsigned_long_int_Array_0[1][0] - unsigned_long_int_Array_0[0][0])))) : 1 [L101] EXPR BOOL_unsigned_char_Array_0[0][0] ? ((unsigned_short_int_Array_0[1] <= unsigned_short_int_Array_0[0]) ? (unsigned_long_int_Array_0[1][1] == ((unsigned long int) (((((unsigned_short_int_Array_0[1]) > ((unsigned_short_int_Array_0[0] + unsigned_long_int_Array_0[0][1]))) ? (unsigned_short_int_Array_0[1]) : ((unsigned_short_int_Array_0[0] + unsigned_long_int_Array_0[0][1])))) + (unsigned_long_int_Array_0[1][0] - unsigned_long_int_Array_0[0][0])))) : 1) : (unsigned_long_int_Array_0[1][1] == ((unsigned long int) unsigned_long_int_Array_0[0][0])) [L101] EXPR (BOOL_unsigned_char_Array_0[0][0] ? ((unsigned_short_int_Array_0[1] <= unsigned_short_int_Array_0[0]) ? (unsigned_long_int_Array_0[1][1] == ((unsigned long int) (((((unsigned_short_int_Array_0[1]) > ((unsigned_short_int_Array_0[0] + unsigned_long_int_Array_0[0][1]))) ? (unsigned_short_int_Array_0[1]) : ((unsigned_short_int_Array_0[0] + unsigned_long_int_Array_0[0][1])))) + (unsigned_long_int_Array_0[1][0] - unsigned_long_int_Array_0[0][0])))) : 1) : (unsigned_long_int_Array_0[1][1] == ((unsigned long int) unsigned_long_int_Array_0[0][0]))) && ((unsigned_long_int_Array_0[0][0] >= unsigned_long_int_Array_0[1][1]) ? (float_Array_0[0][1] == ((float) ((((0.5f) < (float_Array_0[0][0])) ? (0.5f) : (float_Array_0[0][0]))))) : (float_Array_0[0][1] == ((float) ((((float_Array_0[0][0]) < (float_Array_0[1][0])) ? (float_Array_0[0][0]) : (float_Array_0[1][0])))))) [L101] EXPR unsigned_long_int_Array_0[0][0] [L101] EXPR unsigned_long_int_Array_0[1][1] [L101] EXPR (unsigned_long_int_Array_0[0][0] >= unsigned_long_int_Array_0[1][1]) ? (float_Array_0[0][1] == ((float) ((((0.5f) < (float_Array_0[0][0])) ? (0.5f) : (float_Array_0[0][0]))))) : (float_Array_0[0][1] == ((float) ((((float_Array_0[0][0]) < (float_Array_0[1][0])) ? (float_Array_0[0][0]) : (float_Array_0[1][0]))))) [L101] EXPR float_Array_0[0][1] [L101] EXPR float_Array_0[0][0] [L101] EXPR ((0.5f) < (float_Array_0[0][0])) ? (0.5f) : (float_Array_0[0][0]) [L101] EXPR (unsigned_long_int_Array_0[0][0] >= unsigned_long_int_Array_0[1][1]) ? (float_Array_0[0][1] == ((float) ((((0.5f) < (float_Array_0[0][0])) ? (0.5f) : (float_Array_0[0][0]))))) : (float_Array_0[0][1] == ((float) ((((float_Array_0[0][0]) < (float_Array_0[1][0])) ? (float_Array_0[0][0]) : (float_Array_0[1][0]))))) [L101] EXPR (BOOL_unsigned_char_Array_0[0][0] ? ((unsigned_short_int_Array_0[1] <= unsigned_short_int_Array_0[0]) ? (unsigned_long_int_Array_0[1][1] == ((unsigned long int) (((((unsigned_short_int_Array_0[1]) > ((unsigned_short_int_Array_0[0] + unsigned_long_int_Array_0[0][1]))) ? (unsigned_short_int_Array_0[1]) : ((unsigned_short_int_Array_0[0] + unsigned_long_int_Array_0[0][1])))) + (unsigned_long_int_Array_0[1][0] - unsigned_long_int_Array_0[0][0])))) : 1) : (unsigned_long_int_Array_0[1][1] == ((unsigned long int) unsigned_long_int_Array_0[0][0]))) && ((unsigned_long_int_Array_0[0][0] >= unsigned_long_int_Array_0[1][1]) ? (float_Array_0[0][1] == ((float) ((((0.5f) < (float_Array_0[0][0])) ? (0.5f) : (float_Array_0[0][0]))))) : (float_Array_0[0][1] == ((float) ((((float_Array_0[0][0]) < (float_Array_0[1][0])) ? (float_Array_0[0][0]) : (float_Array_0[1][0])))))) [L101] EXPR ((BOOL_unsigned_char_Array_0[0][0] ? ((unsigned_short_int_Array_0[1] <= unsigned_short_int_Array_0[0]) ? (unsigned_long_int_Array_0[1][1] == ((unsigned long int) (((((unsigned_short_int_Array_0[1]) > ((unsigned_short_int_Array_0[0] + unsigned_long_int_Array_0[0][1]))) ? (unsigned_short_int_Array_0[1]) : ((unsigned_short_int_Array_0[0] + unsigned_long_int_Array_0[0][1])))) + (unsigned_long_int_Array_0[1][0] - unsigned_long_int_Array_0[0][0])))) : 1) : (unsigned_long_int_Array_0[1][1] == ((unsigned long int) unsigned_long_int_Array_0[0][0]))) && ((unsigned_long_int_Array_0[0][0] >= unsigned_long_int_Array_0[1][1]) ? (float_Array_0[0][1] == ((float) ((((0.5f) < (float_Array_0[0][0])) ? (0.5f) : (float_Array_0[0][0]))))) : (float_Array_0[0][1] == ((float) ((((float_Array_0[0][0]) < (float_Array_0[1][0])) ? (float_Array_0[0][0]) : (float_Array_0[1][0]))))))) && ((float_Array_0[1][0] >= ((((((((128.175f) > (float_Array_0[0][0])) ? (128.175f) : (float_Array_0[0][0])))) < (float_Array_0[0][1])) ? (((((128.175f) > (float_Array_0[0][0])) ? (128.175f) : (float_Array_0[0][0])))) : (float_Array_0[0][1])))) ? (float_Array_0[1][1] == ((float) float_Array_0[1][0])) : ((! (unsigned_long_int_Array_0[0][0] <= unsigned_long_int_Array_0[1][0])) ? (float_Array_0[1][1] == ((float) float_Array_0[0][0])) : 1)) [L101] EXPR float_Array_0[1][0] [L101] EXPR float_Array_0[0][0] [L101] EXPR ((128.175f) > (float_Array_0[0][0])) ? (128.175f) : (float_Array_0[0][0]) [L101] EXPR float_Array_0[0][1] [L101] EXPR ((((((128.175f) > (float_Array_0[0][0])) ? (128.175f) : (float_Array_0[0][0])))) < (float_Array_0[0][1])) ? (((((128.175f) > (float_Array_0[0][0])) ? (128.175f) : (float_Array_0[0][0])))) : (float_Array_0[0][1]) [L101] EXPR float_Array_0[0][0] [L101] EXPR ((128.175f) > (float_Array_0[0][0])) ? (128.175f) : (float_Array_0[0][0]) [L101] EXPR float_Array_0[0][0] [L101] EXPR ((128.175f) > (float_Array_0[0][0])) ? (128.175f) : (float_Array_0[0][0]) [L101] EXPR ((((((128.175f) > (float_Array_0[0][0])) ? (128.175f) : (float_Array_0[0][0])))) < (float_Array_0[0][1])) ? (((((128.175f) > (float_Array_0[0][0])) ? (128.175f) : (float_Array_0[0][0])))) : (float_Array_0[0][1]) [L101] EXPR (float_Array_0[1][0] >= ((((((((128.175f) > (float_Array_0[0][0])) ? (128.175f) : (float_Array_0[0][0])))) < (float_Array_0[0][1])) ? (((((128.175f) > (float_Array_0[0][0])) ? (128.175f) : (float_Array_0[0][0])))) : (float_Array_0[0][1])))) ? (float_Array_0[1][1] == ((float) float_Array_0[1][0])) : ((! (unsigned_long_int_Array_0[0][0] <= unsigned_long_int_Array_0[1][0])) ? (float_Array_0[1][1] == ((float) float_Array_0[0][0])) : 1) [L101] EXPR float_Array_0[1][1] [L101] EXPR float_Array_0[1][0] [L101] EXPR (float_Array_0[1][0] >= ((((((((128.175f) > (float_Array_0[0][0])) ? (128.175f) : (float_Array_0[0][0])))) < (float_Array_0[0][1])) ? (((((128.175f) > (float_Array_0[0][0])) ? (128.175f) : (float_Array_0[0][0])))) : (float_Array_0[0][1])))) ? (float_Array_0[1][1] == ((float) float_Array_0[1][0])) : ((! (unsigned_long_int_Array_0[0][0] <= unsigned_long_int_Array_0[1][0])) ? (float_Array_0[1][1] == ((float) float_Array_0[0][0])) : 1) [L101] EXPR ((BOOL_unsigned_char_Array_0[0][0] ? ((unsigned_short_int_Array_0[1] <= unsigned_short_int_Array_0[0]) ? (unsigned_long_int_Array_0[1][1] == ((unsigned long int) (((((unsigned_short_int_Array_0[1]) > ((unsigned_short_int_Array_0[0] + unsigned_long_int_Array_0[0][1]))) ? (unsigned_short_int_Array_0[1]) : ((unsigned_short_int_Array_0[0] + unsigned_long_int_Array_0[0][1])))) + (unsigned_long_int_Array_0[1][0] - unsigned_long_int_Array_0[0][0])))) : 1) : (unsigned_long_int_Array_0[1][1] == ((unsigned long int) unsigned_long_int_Array_0[0][0]))) && ((unsigned_long_int_Array_0[0][0] >= unsigned_long_int_Array_0[1][1]) ? (float_Array_0[0][1] == ((float) ((((0.5f) < (float_Array_0[0][0])) ? (0.5f) : (float_Array_0[0][0]))))) : (float_Array_0[0][1] == ((float) ((((float_Array_0[0][0]) < (float_Array_0[1][0])) ? (float_Array_0[0][0]) : (float_Array_0[1][0]))))))) && ((float_Array_0[1][0] >= ((((((((128.175f) > (float_Array_0[0][0])) ? (128.175f) : (float_Array_0[0][0])))) < (float_Array_0[0][1])) ? (((((128.175f) > (float_Array_0[0][0])) ? (128.175f) : (float_Array_0[0][0])))) : (float_Array_0[0][1])))) ? (float_Array_0[1][1] == ((float) float_Array_0[1][0])) : ((! (unsigned_long_int_Array_0[0][0] <= unsigned_long_int_Array_0[1][0])) ? (float_Array_0[1][1] == ((float) float_Array_0[0][0])) : 1)) [L101] EXPR (((BOOL_unsigned_char_Array_0[0][0] ? ((unsigned_short_int_Array_0[1] <= unsigned_short_int_Array_0[0]) ? (unsigned_long_int_Array_0[1][1] == ((unsigned long int) (((((unsigned_short_int_Array_0[1]) > ((unsigned_short_int_Array_0[0] + unsigned_long_int_Array_0[0][1]))) ? (unsigned_short_int_Array_0[1]) : ((unsigned_short_int_Array_0[0] + unsigned_long_int_Array_0[0][1])))) + (unsigned_long_int_Array_0[1][0] - unsigned_long_int_Array_0[0][0])))) : 1) : (unsigned_long_int_Array_0[1][1] == ((unsigned long int) unsigned_long_int_Array_0[0][0]))) && ((unsigned_long_int_Array_0[0][0] >= unsigned_long_int_Array_0[1][1]) ? (float_Array_0[0][1] == ((float) ((((0.5f) < (float_Array_0[0][0])) ? (0.5f) : (float_Array_0[0][0]))))) : (float_Array_0[0][1] == ((float) ((((float_Array_0[0][0]) < (float_Array_0[1][0])) ? (float_Array_0[0][0]) : (float_Array_0[1][0]))))))) && ((float_Array_0[1][0] >= ((((((((128.175f) > (float_Array_0[0][0])) ? (128.175f) : (float_Array_0[0][0])))) < (float_Array_0[0][1])) ? (((((128.175f) > (float_Array_0[0][0])) ? (128.175f) : (float_Array_0[0][0])))) : (float_Array_0[0][1])))) ? (float_Array_0[1][1] == ((float) float_Array_0[1][0])) : ((! (unsigned_long_int_Array_0[0][0] <= unsigned_long_int_Array_0[1][0])) ? (float_Array_0[1][1] == ((float) float_Array_0[0][0])) : 1))) && ((float_Array_0[0][0] != float_Array_0[1][0]) ? ((BOOL_unsigned_char_Array_0[1][1] || BOOL_unsigned_char_Array_0[1][0]) ? (BOOL_unsigned_char_Array_0[0][0] == ((unsigned char) (BOOL_unsigned_char_Array_0[1][0] || BOOL_unsigned_char_Array_0[0][1]))) : (BOOL_unsigned_char_Array_0[0][0] == ((unsigned char) BOOL_unsigned_char_Array_0[0][1]))) : (BOOL_unsigned_char_Array_0[0][0] == ((unsigned char) BOOL_unsigned_char_Array_0[0][1]))) [L101-L102] return (((BOOL_unsigned_char_Array_0[0][0] ? ((unsigned_short_int_Array_0[1] <= unsigned_short_int_Array_0[0]) ? (unsigned_long_int_Array_0[1][1] == ((unsigned long int) (((((unsigned_short_int_Array_0[1]) > ((unsigned_short_int_Array_0[0] + unsigned_long_int_Array_0[0][1]))) ? (unsigned_short_int_Array_0[1]) : ((unsigned_short_int_Array_0[0] + unsigned_long_int_Array_0[0][1])))) + (unsigned_long_int_Array_0[1][0] - unsigned_long_int_Array_0[0][0])))) : 1) : (unsigned_long_int_Array_0[1][1] == ((unsigned long int) unsigned_long_int_Array_0[0][0]))) && ((unsigned_long_int_Array_0[0][0] >= unsigned_long_int_Array_0[1][1]) ? (float_Array_0[0][1] == ((float) ((((0.5f) < (float_Array_0[0][0])) ? (0.5f) : (float_Array_0[0][0]))))) : (float_Array_0[0][1] == ((float) ((((float_Array_0[0][0]) < (float_Array_0[1][0])) ? (float_Array_0[0][0]) : (float_Array_0[1][0]))))))) && ((float_Array_0[1][0] >= ((((((((128.175f) > (float_Array_0[0][0])) ? (128.175f) : (float_Array_0[0][0])))) < (float_Array_0[0][1])) ? (((((128.175f) > (float_Array_0[0][0])) ? (128.175f) : (float_Array_0[0][0])))) : (float_Array_0[0][1])))) ? (float_Array_0[1][1] == ((float) float_Array_0[1][0])) : ((! (unsigned_long_int_Array_0[0][0] <= unsigned_long_int_Array_0[1][0])) ? (float_Array_0[1][1] == ((float) float_Array_0[0][0])) : 1))) && ((float_Array_0[0][0] != float_Array_0[1][0]) ? ((BOOL_unsigned_char_Array_0[1][1] || BOOL_unsigned_char_Array_0[1][0]) ? (BOOL_unsigned_char_Array_0[0][0] == ((unsigned char) (BOOL_unsigned_char_Array_0[1][0] || BOOL_unsigned_char_Array_0[0][1]))) : (BOOL_unsigned_char_Array_0[0][0] == ((unsigned char) BOOL_unsigned_char_Array_0[0][1]))) : (BOOL_unsigned_char_Array_0[0][0] == ((unsigned char) BOOL_unsigned_char_Array_0[0][1]))) ; [L111] RET, EXPR property() [L111] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=0, cond=0, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] [L19] reach_error() VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=0, cond=0, float_Array_0={5:0}, isInitial=1, unsigned_long_int_Array_0={6:0}, unsigned_short_int_Array_0={7:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 1, TraceHistogramMax: 18, 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=45occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 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 16:23:13,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-25.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 153786ff23d1f4ad1fa22216334d8f153d923a58dff5067a8f60a9c72819150b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:23:15,732 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:23:15,810 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 16:23:15,815 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:23:15,816 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:23:15,841 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:23:15,842 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:23:15,842 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:23:15,843 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:23:15,844 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:23:15,844 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:23:15,845 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:23:15,845 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:23:15,846 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:23:15,846 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:23:15,847 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:23:15,848 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:23:15,848 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:23:15,849 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:23:15,850 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:23:15,850 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:23:15,853 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:23:15,853 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:23:15,854 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:23:15,854 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 16:23:15,854 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 16:23:15,855 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 16:23:15,855 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:23:15,855 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:23:15,856 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:23:15,856 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:23:15,857 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 16:23:15,857 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:23:15,857 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:23:15,857 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:23:15,858 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:23:15,858 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:23:15,858 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:23:15,858 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 16:23:15,858 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 16:23:15,859 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:23:15,859 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:23:15,859 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:23:15,859 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:23:15,860 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_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 153786ff23d1f4ad1fa22216334d8f153d923a58dff5067a8f60a9c72819150b [2023-12-02 16:23:16,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:23:16,147 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:23:16,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:23:16,150 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:23:16,151 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:23:16,152 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-25.i [2023-12-02 16:23:18,931 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:23:19,164 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:23:19,165 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-25.i [2023-12-02 16:23:19,174 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/data/6b8df869c/d6d9beaa49a347a6ac77a25fa62e593c/FLAGb6b0be899 [2023-12-02 16:23:19,190 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/data/6b8df869c/d6d9beaa49a347a6ac77a25fa62e593c [2023-12-02 16:23:19,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:23:19,194 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:23:19,195 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:23:19,196 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:23:19,201 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:23:19,202 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:23:19" (1/1) ... [2023-12-02 16:23:19,203 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@362f433f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:19, skipping insertion in model container [2023-12-02 16:23:19,203 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:23:19" (1/1) ... [2023-12-02 16:23:19,233 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:23:19,383 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_1c0cc785-eabc-40de-aaa4-6a0123611bd2/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-25.i[916,929] [2023-12-02 16:23:19,454 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:23:19,471 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:23:19,484 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_1c0cc785-eabc-40de-aaa4-6a0123611bd2/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-25.i[916,929] [2023-12-02 16:23:19,536 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:23:19,558 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:23:19,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:19 WrapperNode [2023-12-02 16:23:19,558 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:23:19,560 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:23:19,560 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:23:19,560 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:23:19,567 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:19" (1/1) ... [2023-12-02 16:23:19,587 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:19" (1/1) ... [2023-12-02 16:23:19,630 INFO L138 Inliner]: procedures = 36, calls = 179, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 492 [2023-12-02 16:23:19,630 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:23:19,631 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:23:19,631 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:23:19,631 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:23:19,641 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:19" (1/1) ... [2023-12-02 16:23:19,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:19" (1/1) ... [2023-12-02 16:23:19,652 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:19" (1/1) ... [2023-12-02 16:23:19,653 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:19" (1/1) ... [2023-12-02 16:23:19,683 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:19" (1/1) ... [2023-12-02 16:23:19,689 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:19" (1/1) ... [2023-12-02 16:23:19,693 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:19" (1/1) ... [2023-12-02 16:23:19,697 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:19" (1/1) ... [2023-12-02 16:23:19,704 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:23:19,705 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:23:19,705 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:23:19,705 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:23:19,706 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:19" (1/1) ... [2023-12-02 16:23:19,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:23:19,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:23:19,748 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:23:19,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:23:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:23:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-12-02 16:23:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2023-12-02 16:23:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 16:23:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-12-02 16:23:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2023-12-02 16:23:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 16:23:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2023-12-02 16:23:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2023-12-02 16:23:19,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2023-12-02 16:23:19,775 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 16:23:19,775 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 16:23:19,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:23:19,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:23:19,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-12-02 16:23:19,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2023-12-02 16:23:19,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 16:23:19,891 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:23:19,894 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:23:20,539 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:23:20,593 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:23:20,593 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 16:23:20,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:23:20 BoogieIcfgContainer [2023-12-02 16:23:20,594 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:23:20,597 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:23:20,597 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:23:20,600 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:23:20,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:23:19" (1/3) ... [2023-12-02 16:23:20,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419b6a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:23:20, skipping insertion in model container [2023-12-02 16:23:20,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:23:19" (2/3) ... [2023-12-02 16:23:20,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419b6a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:23:20, skipping insertion in model container [2023-12-02 16:23:20,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:23:20" (3/3) ... [2023-12-02 16:23:20,603 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-25.i [2023-12-02 16:23:20,621 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:23:20,622 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 16:23:20,674 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:23:20,680 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;@2ae178f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:23:20,680 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 16:23:20,685 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 96 states have (on average 1.4583333333333333) internal successors, (140), 97 states have internal predecessors, (140), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 16:23:20,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-02 16:23:20,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:23:20,702 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:23:20,703 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:23:20,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:23:20,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1859271214, now seen corresponding path program 1 times [2023-12-02 16:23:20,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:23:20,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923787648] [2023-12-02 16:23:20,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:23:20,729 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:23:20,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:23:20,730 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:23:20,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 16:23:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:23:21,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 16:23:21,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:23:21,228 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-12-02 16:23:21,228 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:23:21,229 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:23:21,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923787648] [2023-12-02 16:23:21,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1923787648] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:23:21,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:23:21,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:23:21,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282407454] [2023-12-02 16:23:21,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:23:21,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 16:23:21,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:23:21,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 16:23:21,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 16:23:21,266 INFO L87 Difference]: Start difference. First operand has 117 states, 96 states have (on average 1.4583333333333333) internal successors, (140), 97 states have internal predecessors, (140), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-02 16:23:21,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:23:21,315 INFO L93 Difference]: Finished difference Result 231 states and 368 transitions. [2023-12-02 16:23:21,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 16:23:21,318 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 139 [2023-12-02 16:23:21,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:23:21,325 INFO L225 Difference]: With dead ends: 231 [2023-12-02 16:23:21,325 INFO L226 Difference]: Without dead ends: 115 [2023-12-02 16:23:21,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 138 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 16:23:21,332 INFO L413 NwaCegarLoop]: 167 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, 167 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 16:23:21,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 167 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:23:21,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-12-02 16:23:21,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-12-02 16:23:21,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 95 states have (on average 1.4210526315789473) internal successors, (135), 95 states have internal predecessors, (135), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 16:23:21,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 171 transitions. [2023-12-02 16:23:21,374 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 171 transitions. Word has length 139 [2023-12-02 16:23:21,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:23:21,375 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 171 transitions. [2023-12-02 16:23:21,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-02 16:23:21,376 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 171 transitions. [2023-12-02 16:23:21,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-02 16:23:21,379 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:23:21,380 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:23:21,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 16:23:21,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:23:21,583 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:23:21,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:23:21,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1247964878, now seen corresponding path program 1 times [2023-12-02 16:23:21,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:23:21,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454915560] [2023-12-02 16:23:21,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:23:21,585 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:23:21,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:23:21,586 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:23:21,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 16:23:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:23:22,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 16:23:22,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:23:22,790 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 0 case distinctions, treesize of input 17 treesize of output 17 [2023-12-02 16:23:22,864 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 22 treesize of output 15 [2023-12-02 16:23:22,939 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 22 treesize of output 15 [2023-12-02 16:23:23,014 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-02 16:23:23,014 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:23:23,014 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:23:23,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454915560] [2023-12-02 16:23:23,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1454915560] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:23:23,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:23:23,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 16:23:23,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102628427] [2023-12-02 16:23:23,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:23:23,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 16:23:23,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:23:23,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 16:23:23,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:23:23,019 INFO L87 Difference]: Start difference. First operand 115 states and 171 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:23:24,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:23:24,602 INFO L93 Difference]: Finished difference Result 312 states and 465 transitions. [2023-12-02 16:23:24,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 16:23:24,603 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 139 [2023-12-02 16:23:24,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:23:24,606 INFO L225 Difference]: With dead ends: 312 [2023-12-02 16:23:24,606 INFO L226 Difference]: Without dead ends: 198 [2023-12-02 16:23:24,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-02 16:23:24,609 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 319 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:23:24,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 456 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 16:23:24,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-12-02 16:23:24,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 133. [2023-12-02 16:23:24,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 113 states have (on average 1.4336283185840708) internal successors, (162), 113 states have internal predecessors, (162), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-02 16:23:24,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 198 transitions. [2023-12-02 16:23:24,628 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 198 transitions. Word has length 139 [2023-12-02 16:23:24,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:23:24,630 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 198 transitions. [2023-12-02 16:23:24,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:23:24,630 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 198 transitions. [2023-12-02 16:23:24,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-02 16:23:24,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:23:24,634 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:23:24,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 16:23:24,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:23:24,838 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:23:24,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:23:24,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1453718897, now seen corresponding path program 1 times [2023-12-02 16:23:24,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:23:24,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331813031] [2023-12-02 16:23:24,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:23:24,840 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:23:24,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:23:24,842 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:23:24,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 16:23:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:23:25,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 16:23:25,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:23:25,885 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 16:23:25,972 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 18 treesize of output 13 [2023-12-02 16:23:26,023 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 18 treesize of output 13 [2023-12-02 16:23:26,042 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 18 treesize of output 10 [2023-12-02 16:23:26,230 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-02 16:23:26,230 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:23:26,230 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:23:26,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331813031] [2023-12-02 16:23:26,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331813031] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:23:26,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:23:26,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 16:23:26,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69798993] [2023-12-02 16:23:26,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:23:26,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 16:23:26,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:23:26,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 16:23:26,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:23:26,233 INFO L87 Difference]: Start difference. First operand 133 states and 198 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:23:32,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:23:32,032 INFO L93 Difference]: Finished difference Result 378 states and 562 transitions. [2023-12-02 16:23:32,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 16:23:32,033 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 140 [2023-12-02 16:23:32,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:23:32,035 INFO L225 Difference]: With dead ends: 378 [2023-12-02 16:23:32,035 INFO L226 Difference]: Without dead ends: 246 [2023-12-02 16:23:32,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-02 16:23:32,037 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 381 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:23:32,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 382 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-12-02 16:23:32,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-12-02 16:23:32,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 214. [2023-12-02 16:23:32,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 185 states have (on average 1.4378378378378378) internal successors, (266), 186 states have internal predecessors, (266), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-02 16:23:32,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 318 transitions. [2023-12-02 16:23:32,057 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 318 transitions. Word has length 140 [2023-12-02 16:23:32,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:23:32,058 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 318 transitions. [2023-12-02 16:23:32,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:23:32,058 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 318 transitions. [2023-12-02 16:23:32,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-02 16:23:32,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:23:32,061 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:23:32,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 16:23:32,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:23:32,267 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:23:32,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:23:32,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1728640608, now seen corresponding path program 1 times [2023-12-02 16:23:32,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:23:32,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [375203148] [2023-12-02 16:23:32,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:23:32,268 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:23:32,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:23:32,269 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:23:32,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 16:23:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:23:32,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 16:23:32,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:23:32,588 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-02 16:23:32,588 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:23:32,588 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:23:32,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [375203148] [2023-12-02 16:23:32,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [375203148] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:23:32,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:23:32,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:23:32,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660861759] [2023-12-02 16:23:32,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:23:32,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:23:32,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:23:32,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:23:32,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:23:32,592 INFO L87 Difference]: Start difference. First operand 214 states and 318 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:23:32,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:23:32,681 INFO L93 Difference]: Finished difference Result 487 states and 725 transitions. [2023-12-02 16:23:32,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:23:32,682 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 141 [2023-12-02 16:23:32,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:23:32,686 INFO L225 Difference]: With dead ends: 487 [2023-12-02 16:23:32,686 INFO L226 Difference]: Without dead ends: 274 [2023-12-02 16:23:32,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:23:32,689 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 93 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:23:32,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 714 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:23:32,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-12-02 16:23:32,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 218. [2023-12-02 16:23:32,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 189 states have (on average 1.4285714285714286) internal successors, (270), 190 states have internal predecessors, (270), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-02 16:23:32,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 322 transitions. [2023-12-02 16:23:32,715 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 322 transitions. Word has length 141 [2023-12-02 16:23:32,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:23:32,716 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 322 transitions. [2023-12-02 16:23:32,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:23:32,716 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 322 transitions. [2023-12-02 16:23:32,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-12-02 16:23:32,719 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:23:32,719 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:23:32,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 16:23:32,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:23:32,920 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:23:32,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:23:32,920 INFO L85 PathProgramCache]: Analyzing trace with hash -2109962486, now seen corresponding path program 1 times [2023-12-02 16:23:32,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:23:32,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2021805253] [2023-12-02 16:23:32,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:23:32,921 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:23:32,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:23:32,922 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:23:32,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 16:23:33,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:23:33,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 16:23:33,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:23:34,247 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 16:23:34,343 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 18 treesize of output 13 [2023-12-02 16:23:34,401 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 18 treesize of output 13 [2023-12-02 16:23:34,445 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 18 treesize of output 13 [2023-12-02 16:23:34,464 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 18 treesize of output 10 [2023-12-02 16:23:34,484 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-02 16:23:34,485 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:23:34,485 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:23:34,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2021805253] [2023-12-02 16:23:34,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2021805253] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:23:34,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:23:34,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:23:34,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928736461] [2023-12-02 16:23:34,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:23:34,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:23:34,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:23:34,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:23:34,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:23:34,487 INFO L87 Difference]: Start difference. First operand 218 states and 322 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:23:40,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:23:40,776 INFO L93 Difference]: Finished difference Result 547 states and 805 transitions. [2023-12-02 16:23:40,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 16:23:40,777 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 142 [2023-12-02 16:23:40,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:23:40,780 INFO L225 Difference]: With dead ends: 547 [2023-12-02 16:23:40,780 INFO L226 Difference]: Without dead ends: 330 [2023-12-02 16:23:40,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-02 16:23:40,781 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 308 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:23:40,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 460 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-12-02 16:23:40,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2023-12-02 16:23:40,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 298. [2023-12-02 16:23:40,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 254 states have (on average 1.4094488188976377) internal successors, (358), 256 states have internal predecessors, (358), 40 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-02 16:23:40,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 438 transitions. [2023-12-02 16:23:40,808 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 438 transitions. Word has length 142 [2023-12-02 16:23:40,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:23:40,809 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 438 transitions. [2023-12-02 16:23:40,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:23:40,809 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 438 transitions. [2023-12-02 16:23:40,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-02 16:23:40,810 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:23:40,811 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:23:40,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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)] Forceful destruction successful, exit code 0 [2023-12-02 16:23:41,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:23:41,011 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:23:41,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:23:41,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1124292229, now seen corresponding path program 1 times [2023-12-02 16:23:41,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:23:41,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1266819838] [2023-12-02 16:23:41,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:23:41,013 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:23:41,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:23:41,013 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:23:41,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 16:23:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:23:41,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 16:23:41,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:23:42,083 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 16:23:42,117 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 16:23:42,169 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 16:23:42,209 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 16:23:42,243 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-02 16:23:42,243 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:23:42,243 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:23:42,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1266819838] [2023-12-02 16:23:42,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1266819838] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:23:42,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:23:42,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 16:23:42,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155556955] [2023-12-02 16:23:42,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:23:42,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 16:23:42,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:23:42,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 16:23:42,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:23:42,245 INFO L87 Difference]: Start difference. First operand 298 states and 438 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:23:44,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:23:44,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:23:44,886 INFO L93 Difference]: Finished difference Result 595 states and 870 transitions. [2023-12-02 16:23:44,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:23:44,887 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 143 [2023-12-02 16:23:44,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:23:44,890 INFO L225 Difference]: With dead ends: 595 [2023-12-02 16:23:44,890 INFO L226 Difference]: Without dead ends: 298 [2023-12-02 16:23:44,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-02 16:23:44,892 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 302 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:23:44,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 420 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-02 16:23:44,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2023-12-02 16:23:44,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 222. [2023-12-02 16:23:44,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 192 states have (on average 1.4114583333333333) internal successors, (271), 193 states have internal predecessors, (271), 26 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-02 16:23:44,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 323 transitions. [2023-12-02 16:23:44,918 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 323 transitions. Word has length 143 [2023-12-02 16:23:44,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:23:44,919 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 323 transitions. [2023-12-02 16:23:44,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:23:44,919 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 323 transitions. [2023-12-02 16:23:44,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-02 16:23:44,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:23:44,921 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:23:44,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 16:23:45,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:23:45,121 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:23:45,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:23:45,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1948048389, now seen corresponding path program 1 times [2023-12-02 16:23:45,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:23:45,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [422074833] [2023-12-02 16:23:45,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:23:45,123 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:23:45,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:23:45,123 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:23:45,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-02 16:23:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:23:45,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 16:23:45,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:23:45,481 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 19 treesize of output 1 [2023-12-02 16:23:45,509 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 0 case distinctions, treesize of input 49 treesize of output 21 [2023-12-02 16:23:45,529 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 57 treesize of output 21 [2023-12-02 16:23:45,634 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-02 16:23:45,634 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:23:45,634 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:23:45,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [422074833] [2023-12-02 16:23:45,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [422074833] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:23:45,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:23:45,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-02 16:23:45,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23136760] [2023-12-02 16:23:45,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:23:45,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 16:23:45,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:23:45,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 16:23:45,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-02 16:23:45,636 INFO L87 Difference]: Start difference. First operand 222 states and 323 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:23:47,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:23:47,113 INFO L93 Difference]: Finished difference Result 646 states and 942 transitions. [2023-12-02 16:23:47,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 16:23:47,114 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 143 [2023-12-02 16:23:47,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:23:47,116 INFO L225 Difference]: With dead ends: 646 [2023-12-02 16:23:47,116 INFO L226 Difference]: Without dead ends: 425 [2023-12-02 16:23:47,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2023-12-02 16:23:47,118 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 308 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:23:47,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 914 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 487 Invalid, 2 Unknown, 0 Unchecked, 1.2s Time] [2023-12-02 16:23:47,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2023-12-02 16:23:47,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 285. [2023-12-02 16:23:47,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 255 states have (on average 1.407843137254902) internal successors, (359), 256 states have internal predecessors, (359), 26 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-02 16:23:47,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 411 transitions. [2023-12-02 16:23:47,134 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 411 transitions. Word has length 143 [2023-12-02 16:23:47,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:23:47,135 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 411 transitions. [2023-12-02 16:23:47,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:23:47,135 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 411 transitions. [2023-12-02 16:23:47,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-02 16:23:47,137 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:23:47,138 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:23:47,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-02 16:23:47,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:23:47,343 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:23:47,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:23:47,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1953891897, now seen corresponding path program 1 times [2023-12-02 16:23:47,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:23:47,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239130242] [2023-12-02 16:23:47,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:23:47,344 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:23:47,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:23:47,345 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:23:47,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 16:23:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:23:47,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-02 16:23:47,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:23:48,326 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 19 treesize of output 1 [2023-12-02 16:23:48,892 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 69 treesize of output 54 [2023-12-02 16:23:49,311 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 69 treesize of output 54 [2023-12-02 16:23:49,724 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 69 treesize of output 54 [2023-12-02 16:23:50,125 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 69 treesize of output 54 [2023-12-02 16:23:50,511 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 69 treesize of output 54 [2023-12-02 16:23:51,038 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 114 treesize of output 87 [2023-12-02 16:23:51,156 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 114 treesize of output 87 [2023-12-02 16:23:51,270 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:23:51,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 49 [2023-12-02 16:23:51,359 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 252 proven. 128 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-02 16:23:51,359 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:23:51,476 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_248 (Array (_ BitVec 32) (_ BitVec 32)))) (not (fp.lt ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) (let ((.cse0 (select (select (store |c_#memory_int| |c_~#unsigned_long_int_Array_0~0.base| v_ArrVal_248) |c_~#float_Array_0~0.base|) |c_~#float_Array_0~0.offset|))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0)))))) is different from false [2023-12-02 16:23:51,660 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:23:51,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239130242] [2023-12-02 16:23:51,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239130242] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:23:51,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1258123883] [2023-12-02 16:23:51,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:23:51,660 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:23:51,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:23:51,661 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:23:51,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2023-12-02 16:23:52,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:23:52,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-02 16:23:52,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:23:53,229 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 19 treesize of output 1 [2023-12-02 16:23:53,606 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 69 treesize of output 54 [2023-12-02 16:23:54,027 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 69 treesize of output 54 [2023-12-02 16:23:54,455 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 69 treesize of output 54 [2023-12-02 16:23:54,862 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 69 treesize of output 54 [2023-12-02 16:23:55,266 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 69 treesize of output 54 [2023-12-02 16:23:55,604 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 114 treesize of output 87 [2023-12-02 16:23:55,666 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 114 treesize of output 87 [2023-12-02 16:23:55,719 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:23:55,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 49 [2023-12-02 16:23:55,795 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 252 proven. 128 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-02 16:23:55,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:23:56,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1258123883] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:23:56,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876138596] [2023-12-02 16:23:56,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:23:56,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:23:56,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:23:56,108 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:23:56,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 16:23:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:23:56,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 16:23:56,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:23:56,556 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 0 case distinctions, treesize of input 43 treesize of output 19 [2023-12-02 16:23:56,733 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 0 case distinctions, treesize of input 66 treesize of output 30 [2023-12-02 16:23:56,784 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 68 treesize of output 32 [2023-12-02 16:23:56,888 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-02 16:23:56,888 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:23:56,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876138596] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:23:56,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:23:56,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 11] total 17 [2023-12-02 16:23:56,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772871865] [2023-12-02 16:23:56,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:23:56,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:23:56,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:23:56,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:23:56,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=502, Unknown=16, NotChecked=46, Total=650 [2023-12-02 16:23:56,891 INFO L87 Difference]: Start difference. First operand 285 states and 411 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:23:58,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:23:58,487 INFO L93 Difference]: Finished difference Result 775 states and 1119 transitions. [2023-12-02 16:23:58,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 16:23:58,488 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 143 [2023-12-02 16:23:58,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:23:58,491 INFO L225 Difference]: With dead ends: 775 [2023-12-02 16:23:58,491 INFO L226 Difference]: Without dead ends: 491 [2023-12-02 16:23:58,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 457 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=103, Invalid=641, Unknown=16, NotChecked=52, Total=812 [2023-12-02 16:23:58,493 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 357 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:23:58,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 362 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-02 16:23:58,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2023-12-02 16:23:58,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 331. [2023-12-02 16:23:58,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 301 states have (on average 1.4119601328903655) internal successors, (425), 302 states have internal predecessors, (425), 26 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-02 16:23:58,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 477 transitions. [2023-12-02 16:23:58,507 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 477 transitions. Word has length 143 [2023-12-02 16:23:58,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:23:58,508 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 477 transitions. [2023-12-02 16:23:58,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:23:58,508 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 477 transitions. [2023-12-02 16:23:58,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-02 16:23:58,510 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:23:58,510 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:23:58,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-02 16:23:58,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2023-12-02 16:23:58,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 16:23:59,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:23:59,111 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:23:59,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:23:59,112 INFO L85 PathProgramCache]: Analyzing trace with hash 2105356322, now seen corresponding path program 1 times [2023-12-02 16:23:59,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:23:59,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [34033936] [2023-12-02 16:23:59,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:23:59,113 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:23:59,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:23:59,113 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:23:59,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 16:23:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:23:59,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 16:23:59,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:23:59,524 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:23:59,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 10 [2023-12-02 16:23:59,537 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-02 16:23:59,537 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:23:59,538 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:23:59,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [34033936] [2023-12-02 16:23:59,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [34033936] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:23:59,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:23:59,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:23:59,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998876683] [2023-12-02 16:23:59,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:23:59,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:23:59,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:23:59,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:23:59,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:23:59,540 INFO L87 Difference]: Start difference. First operand 331 states and 477 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:24:00,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:24:00,239 INFO L93 Difference]: Finished difference Result 700 states and 1008 transitions. [2023-12-02 16:24:00,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:24:00,240 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 143 [2023-12-02 16:24:00,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:24:00,243 INFO L225 Difference]: With dead ends: 700 [2023-12-02 16:24:00,243 INFO L226 Difference]: Without dead ends: 370 [2023-12-02 16:24:00,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:24:00,245 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 79 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:24:00,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 471 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 16:24:00,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-12-02 16:24:00,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 340. [2023-12-02 16:24:00,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 310 states have (on average 1.4) internal successors, (434), 311 states have internal predecessors, (434), 26 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-02 16:24:00,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 486 transitions. [2023-12-02 16:24:00,265 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 486 transitions. Word has length 143 [2023-12-02 16:24:00,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:24:00,266 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 486 transitions. [2023-12-02 16:24:00,266 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:24:00,266 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 486 transitions. [2023-12-02 16:24:00,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-02 16:24:00,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:24:00,269 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:24:00,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 16:24:00,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:24:00,470 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:24:00,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:24:00,471 INFO L85 PathProgramCache]: Analyzing trace with hash 264948155, now seen corresponding path program 1 times [2023-12-02 16:24:00,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:24:00,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846293902] [2023-12-02 16:24:00,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:24:00,471 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:24:00,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:24:00,472 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:24:00,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 16:24:00,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:24:00,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-02 16:24:00,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:24:02,103 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 69 treesize of output 54 [2023-12-02 16:24:02,493 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 69 treesize of output 54 [2023-12-02 16:24:02,873 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 69 treesize of output 54 [2023-12-02 16:24:03,273 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 69 treesize of output 54 [2023-12-02 16:24:03,681 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 69 treesize of output 54 [2023-12-02 16:24:04,111 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 114 treesize of output 87 [2023-12-02 16:24:04,223 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 114 treesize of output 87 [2023-12-02 16:24:04,318 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:24:04,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 49 [2023-12-02 16:24:04,422 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 252 proven. 128 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-02 16:24:04,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:24:04,521 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_378 (Array (_ BitVec 32) (_ BitVec 32)))) (not (fp.lt ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) (let ((.cse0 (select (select (store |c_#memory_int| |c_~#unsigned_long_int_Array_0~0.base| v_ArrVal_378) |c_~#float_Array_0~0.base|) |c_~#float_Array_0~0.offset|))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0)))))) is different from false [2023-12-02 16:24:04,702 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:24:04,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846293902] [2023-12-02 16:24:04,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846293902] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:24:04,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1526238745] [2023-12-02 16:24:04,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:24:04,702 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:24:04,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:24:04,703 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:24:04,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-12-02 16:24:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:24:05,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-02 16:24:05,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:24:06,345 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 19 treesize of output 1 [2023-12-02 16:24:06,742 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 69 treesize of output 54 [2023-12-02 16:24:07,152 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 69 treesize of output 54 [2023-12-02 16:24:07,575 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 69 treesize of output 54 [2023-12-02 16:24:08,010 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 69 treesize of output 54 [2023-12-02 16:24:08,401 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 69 treesize of output 54 [2023-12-02 16:24:08,767 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 114 treesize of output 87 [2023-12-02 16:24:08,829 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 114 treesize of output 87 [2023-12-02 16:24:08,885 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:24:08,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 49 [2023-12-02 16:24:08,967 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 252 proven. 128 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-02 16:24:08,967 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:24:09,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1526238745] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:24:09,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336667480] [2023-12-02 16:24:09,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:24:09,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:24:09,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:24:09,307 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:24:09,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 16:24:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:24:09,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 16:24:09,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:24:09,797 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 0 case distinctions, treesize of input 43 treesize of output 19 [2023-12-02 16:24:09,957 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 0 case distinctions, treesize of input 67 treesize of output 31 [2023-12-02 16:24:10,006 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 69 treesize of output 33 [2023-12-02 16:24:10,107 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-02 16:24:10,107 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:24:10,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336667480] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:24:10,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:24:10,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 11] total 17 [2023-12-02 16:24:10,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146598319] [2023-12-02 16:24:10,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:24:10,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:24:10,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:24:10,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:24:10,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=507, Unknown=11, NotChecked=46, Total=650 [2023-12-02 16:24:10,109 INFO L87 Difference]: Start difference. First operand 340 states and 486 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:24:12,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:24:12,271 INFO L93 Difference]: Finished difference Result 837 states and 1199 transitions. [2023-12-02 16:24:12,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 16:24:12,272 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 143 [2023-12-02 16:24:12,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:24:12,274 INFO L225 Difference]: With dead ends: 837 [2023-12-02 16:24:12,275 INFO L226 Difference]: Without dead ends: 498 [2023-12-02 16:24:12,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 457 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=103, Invalid=646, Unknown=11, NotChecked=52, Total=812 [2023-12-02 16:24:12,276 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 275 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-02 16:24:12,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 556 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 871 Invalid, 2 Unknown, 0 Unchecked, 1.9s Time] [2023-12-02 16:24:12,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2023-12-02 16:24:12,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 291. [2023-12-02 16:24:12,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 261 states have (on average 1.3908045977011494) internal successors, (363), 262 states have internal predecessors, (363), 26 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-02 16:24:12,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 415 transitions. [2023-12-02 16:24:12,297 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 415 transitions. Word has length 143 [2023-12-02 16:24:12,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:24:12,298 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 415 transitions. [2023-12-02 16:24:12,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:24:12,298 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 415 transitions. [2023-12-02 16:24:12,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-02 16:24:12,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:24:12,300 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:24:12,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-02 16:24:12,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2023-12-02 16:24:12,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-02 16:24:12,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:24:12,902 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:24:12,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:24:12,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1729193671, now seen corresponding path program 1 times [2023-12-02 16:24:12,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:24:12,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369081975] [2023-12-02 16:24:12,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:24:12,903 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:24:12,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:24:12,904 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:24:12,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 16:24:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:24:13,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-02 16:24:13,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:24:13,845 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 19 treesize of output 1 [2023-12-02 16:24:14,426 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 69 treesize of output 54 [2023-12-02 16:24:14,830 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 69 treesize of output 54 [2023-12-02 16:24:15,230 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 69 treesize of output 54 [2023-12-02 16:24:15,611 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 69 treesize of output 54 [2023-12-02 16:24:16,018 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 69 treesize of output 54 [2023-12-02 16:24:16,459 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 114 treesize of output 87 [2023-12-02 16:24:16,578 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 114 treesize of output 87 [2023-12-02 16:24:16,737 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:24:16,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 56 [2023-12-02 16:24:16,865 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:24:16,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 56 [2023-12-02 16:24:16,990 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:24:16,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 49 [2023-12-02 16:24:17,080 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 252 proven. 128 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-02 16:24:17,080 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:24:17,525 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:24:17,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1369081975] [2023-12-02 16:24:17,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1369081975] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:24:17,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1677615216] [2023-12-02 16:24:17,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:24:17,525 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:24:17,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:24:17,526 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:24:17,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-12-02 16:24:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:24:18,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-02 16:24:18,821 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:24:19,038 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 16:24:20,020 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 39 treesize of output 30 [2023-12-02 16:24:20,448 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 43 treesize of output 32 [2023-12-02 16:24:20,698 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 43 treesize of output 32 [2023-12-02 16:24:20,988 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 43 treesize of output 32 [2023-12-02 16:24:21,237 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 43 treesize of output 32 [2023-12-02 16:24:21,506 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 43 treesize of output 32 [2023-12-02 16:24:21,789 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 43 treesize of output 32 [2023-12-02 16:24:21,978 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 43 treesize of output 32 [2023-12-02 16:24:22,257 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 52 treesize of output 42 [2023-12-02 16:24:22,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2023-12-02 16:24:22,489 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 50 proven. 478 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-02 16:24:22,489 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:24:22,723 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_522 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) ((_ sign_extend 24) ((_ extract 7 0) (select (select (store |c_#memory_int| |c_~#unsigned_short_int_Array_0~0.base| v_ArrVal_522) |c_~#BOOL_unsigned_char_Array_0~0.base|) (bvadd |c_~#BOOL_unsigned_char_Array_0~0.offset| (_ bv1 32)))))) (_ bv0 8)))) is different from false [2023-12-02 16:24:22,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1677615216] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:24:22,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622692644] [2023-12-02 16:24:22,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:24:22,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:24:22,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:24:22,730 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:24:22,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 16:24:22,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:24:22,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 16:24:22,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:24:23,306 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 0 case distinctions, treesize of input 89 treesize of output 53 [2023-12-02 16:24:23,779 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:24:23,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 55 [2023-12-02 16:24:23,874 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:24:23,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 48 [2023-12-02 16:24:24,056 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-02 16:24:24,056 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:24:24,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622692644] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:24:24,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:24:24,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11, 17] total 34 [2023-12-02 16:24:24,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047406595] [2023-12-02 16:24:24,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:24:24,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 16:24:24,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:24:24,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 16:24:24,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1629, Unknown=11, NotChecked=82, Total=1892 [2023-12-02 16:24:24,059 INFO L87 Difference]: Start difference. First operand 291 states and 415 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:24:26,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:28,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:24:28,357 INFO L93 Difference]: Finished difference Result 845 states and 1212 transitions. [2023-12-02 16:24:28,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 16:24:28,358 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 143 [2023-12-02 16:24:28,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:24:28,362 INFO L225 Difference]: With dead ends: 845 [2023-12-02 16:24:28,362 INFO L226 Difference]: Without dead ends: 555 [2023-12-02 16:24:28,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=191, Invalid=1872, Unknown=11, NotChecked=88, Total=2162 [2023-12-02 16:24:28,365 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 320 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:24:28,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 547 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 973 Invalid, 2 Unknown, 0 Unchecked, 4.0s Time] [2023-12-02 16:24:28,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2023-12-02 16:24:28,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 346. [2023-12-02 16:24:28,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 316 states have (on average 1.3955696202531647) internal successors, (441), 317 states have internal predecessors, (441), 26 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-02 16:24:28,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 493 transitions. [2023-12-02 16:24:28,389 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 493 transitions. Word has length 143 [2023-12-02 16:24:28,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:24:28,390 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 493 transitions. [2023-12-02 16:24:28,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:24:28,390 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 493 transitions. [2023-12-02 16:24:28,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-02 16:24:28,392 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:24:28,392 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:24:28,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-02 16:24:28,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2023-12-02 16:24:28,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 16:24:28,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:24:28,994 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:24:28,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:24:28,995 INFO L85 PathProgramCache]: Analyzing trace with hash -2122220681, now seen corresponding path program 1 times [2023-12-02 16:24:28,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:24:28,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1812123035] [2023-12-02 16:24:28,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:24:28,995 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:24:28,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:24:28,996 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:24:28,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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)] Waiting until timeout for monitored process [2023-12-02 16:24:29,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:24:29,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 39 conjunts are in the unsatisfiable core [2023-12-02 16:24:29,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:24:29,966 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 19 treesize of output 1 [2023-12-02 16:24:30,440 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 69 treesize of output 54 [2023-12-02 16:24:30,743 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 69 treesize of output 54 [2023-12-02 16:24:31,028 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 69 treesize of output 54 [2023-12-02 16:24:31,331 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 69 treesize of output 54 [2023-12-02 16:24:31,591 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 69 treesize of output 54 [2023-12-02 16:24:31,919 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 114 treesize of output 87 [2023-12-02 16:24:32,024 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 114 treesize of output 87 [2023-12-02 16:24:32,218 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:24:32,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 170 treesize of output 89 [2023-12-02 16:24:32,439 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:24:32,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 170 treesize of output 80 [2023-12-02 16:24:32,671 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:24:32,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 199 treesize of output 73 [2023-12-02 16:24:32,971 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-02 16:24:32,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:24:33,477 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_skolemized_q#valueAsBitvector_100| (_ BitVec 32)) (v_ArrVal_590 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (let ((.cse2 (select (select (store |c_#memory_int| |c_~#unsigned_long_int_Array_0~0.base| v_ArrVal_590) |c_~#float_Array_0~0.base|) |c_~#float_Array_0~0.offset|))) (fp ((_ extract 31 31) .cse2) ((_ extract 30 23) .cse2) ((_ extract 22 0) .cse2)))) (.cse0 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_100|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_100|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_100|)))) (or (fp.eq .cse0 .cse1) (not (= .cse1 .cse0))))) is different from false [2023-12-02 16:24:33,790 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:24:33,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1812123035] [2023-12-02 16:24:33,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1812123035] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:24:33,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [399824283] [2023-12-02 16:24:33,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:24:33,790 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:24:33,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:24:33,791 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:24:33,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2023-12-02 16:24:35,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:24:35,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-02 16:24:35,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:24:35,444 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 16:24:36,721 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 39 treesize of output 30 [2023-12-02 16:24:37,179 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 25 treesize of output 18 [2023-12-02 16:24:37,439 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 25 treesize of output 18 [2023-12-02 16:24:37,782 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 25 treesize of output 18 [2023-12-02 16:24:38,095 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 25 treesize of output 18 [2023-12-02 16:24:38,382 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 25 treesize of output 18 [2023-12-02 16:24:38,729 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 25 treesize of output 18 [2023-12-02 16:24:38,961 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 25 treesize of output 18 [2023-12-02 16:24:39,307 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 34 treesize of output 32 [2023-12-02 16:24:39,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 18 [2023-12-02 16:24:39,581 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 50 proven. 478 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-02 16:24:39,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:24:39,860 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_631 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) ((_ sign_extend 24) ((_ extract 7 0) (select (select (store |c_#memory_int| |c_~#unsigned_short_int_Array_0~0.base| v_ArrVal_631) |c_~#BOOL_unsigned_char_Array_0~0.base|) (bvadd |c_~#BOOL_unsigned_char_Array_0~0.offset| (_ bv1 32)))))) (_ bv0 8)))) is different from false [2023-12-02 16:24:39,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [399824283] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:24:39,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015347967] [2023-12-02 16:24:39,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:24:39,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:24:39,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:24:39,868 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:24:39,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 16:24:40,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:24:40,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-02 16:24:40,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:24:40,802 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 0 case distinctions, treesize of input 89 treesize of output 53 [2023-12-02 16:24:41,371 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:24:41,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 55 [2023-12-02 16:24:41,699 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:24:41,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 57 [2023-12-02 16:24:42,009 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 24 proven. 27 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-12-02 16:24:42,009 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:24:43,289 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-02 16:24:43,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015347967] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 16:24:43,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:24:43,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [17, 17, 14] total 50 [2023-12-02 16:24:43,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44550494] [2023-12-02 16:24:43,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:24:43,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 16:24:43,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:24:43,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 16:24:43,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=3175, Unknown=2, NotChecked=230, Total=3660 [2023-12-02 16:24:43,292 INFO L87 Difference]: Start difference. First operand 346 states and 493 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:24:48,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:24:48,611 INFO L93 Difference]: Finished difference Result 1023 states and 1473 transitions. [2023-12-02 16:24:48,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 16:24:48,612 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 143 [2023-12-02 16:24:48,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:24:48,617 INFO L225 Difference]: With dead ends: 1023 [2023-12-02 16:24:48,617 INFO L226 Difference]: Without dead ends: 678 [2023-12-02 16:24:48,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 578 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1524 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=400, Invalid=5008, Unknown=2, NotChecked=290, Total=5700 [2023-12-02 16:24:48,621 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 375 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:24:48,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 1319 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-02 16:24:48,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2023-12-02 16:24:48,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 346. [2023-12-02 16:24:48,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 316 states have (on average 1.3955696202531647) internal successors, (441), 317 states have internal predecessors, (441), 26 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-02 16:24:48,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 493 transitions. [2023-12-02 16:24:48,644 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 493 transitions. Word has length 143 [2023-12-02 16:24:48,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:24:48,645 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 493 transitions. [2023-12-02 16:24:48,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:24:48,645 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 493 transitions. [2023-12-02 16:24:48,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-02 16:24:48,647 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:24:48,647 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:24:48,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-02 16:24:48,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2023-12-02 16:24:49,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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)] Ended with exit code 0 [2023-12-02 16:24:49,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:24:49,248 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:24:49,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:24:49,249 INFO L85 PathProgramCache]: Analyzing trace with hash 876829883, now seen corresponding path program 1 times [2023-12-02 16:24:49,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:24:49,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [604655237] [2023-12-02 16:24:49,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:24:49,249 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:24:49,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:24:49,250 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:24:49,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-02 16:24:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:24:49,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-02 16:24:49,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:24:50,267 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 19 treesize of output 1 [2023-12-02 16:24:50,795 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 69 treesize of output 54 [2023-12-02 16:24:51,143 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 69 treesize of output 54 [2023-12-02 16:24:51,511 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 69 treesize of output 54 [2023-12-02 16:24:51,945 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 69 treesize of output 54 [2023-12-02 16:24:52,392 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 69 treesize of output 54 [2023-12-02 16:24:52,881 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 114 treesize of output 87 [2023-12-02 16:24:53,016 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 114 treesize of output 87 [2023-12-02 16:24:53,185 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:24:53,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 56 [2023-12-02 16:24:53,308 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:24:53,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 56 [2023-12-02 16:24:53,432 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:24:53,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 49 [2023-12-02 16:24:53,516 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 252 proven. 128 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-02 16:24:53,517 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:24:53,943 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:24:53,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [604655237] [2023-12-02 16:24:53,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [604655237] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:24:53,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [930515365] [2023-12-02 16:24:53,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:24:53,943 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:24:53,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:24:53,944 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:24:53,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2023-12-02 16:24:55,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:24:55,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-02 16:24:55,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:24:55,710 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 15 treesize of output 1 [2023-12-02 16:24:56,562 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 34 treesize of output 18 [2023-12-02 16:24:56,808 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 16:24:56,993 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 16:24:57,197 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 16:24:57,373 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 16:24:57,552 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 16:24:57,774 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 16:24:57,913 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 16:24:58,078 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 36 treesize of output 27 [2023-12-02 16:24:58,162 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 40 treesize of output 20 [2023-12-02 16:24:58,249 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 48 proven. 478 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-12-02 16:24:58,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:24:58,447 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_739 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) ((_ sign_extend 24) ((_ extract 7 0) (select (select (store |c_#memory_int| |c_~#unsigned_short_int_Array_0~0.base| v_ArrVal_739) |c_~#BOOL_unsigned_char_Array_0~0.base|) (bvadd |c_~#BOOL_unsigned_char_Array_0~0.offset| (_ bv1 32)))))) (_ bv0 8)))) is different from false [2023-12-02 16:24:58,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [930515365] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:24:58,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30538233] [2023-12-02 16:24:58,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:24:58,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:24:58,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:24:58,454 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:24:58,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-02 16:24:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:24:58,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 16:24:58,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:24:59,019 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 0 case distinctions, treesize of input 44 treesize of output 20 [2023-12-02 16:24:59,271 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 0 case distinctions, treesize of input 68 treesize of output 32 [2023-12-02 16:24:59,312 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 70 treesize of output 34 [2023-12-02 16:24:59,453 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-02 16:24:59,453 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:24:59,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30538233] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:24:59,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:24:59,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 15] total 31 [2023-12-02 16:24:59,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158438134] [2023-12-02 16:24:59,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:24:59,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:24:59,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:24:59,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:24:59,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1399, Unknown=15, NotChecked=76, Total=1640 [2023-12-02 16:24:59,456 INFO L87 Difference]: Start difference. First operand 346 states and 493 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:25:02,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:25:02,070 INFO L93 Difference]: Finished difference Result 938 states and 1336 transitions. [2023-12-02 16:25:02,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 16:25:02,071 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 143 [2023-12-02 16:25:02,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:25:02,075 INFO L225 Difference]: With dead ends: 938 [2023-12-02 16:25:02,075 INFO L226 Difference]: Without dead ends: 593 [2023-12-02 16:25:02,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 457 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=173, Invalid=1622, Unknown=15, NotChecked=82, Total=1892 [2023-12-02 16:25:02,078 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 311 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:25:02,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 593 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 998 Invalid, 2 Unknown, 0 Unchecked, 2.3s Time] [2023-12-02 16:25:02,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2023-12-02 16:25:02,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 489. [2023-12-02 16:25:02,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 445 states have (on average 1.3842696629213482) internal successors, (616), 448 states have internal predecessors, (616), 38 states have call successors, (38), 5 states have call predecessors, (38), 5 states have return successors, (38), 35 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-02 16:25:02,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 692 transitions. [2023-12-02 16:25:02,113 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 692 transitions. Word has length 143 [2023-12-02 16:25:02,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:25:02,114 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 692 transitions. [2023-12-02 16:25:02,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:25:02,114 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 692 transitions. [2023-12-02 16:25:02,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-02 16:25:02,116 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:25:02,116 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:25:02,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-02 16:25:02,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-12-02 16:25:02,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2023-12-02 16:25:02,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 16:25:02,717 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:25:02,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:25:02,718 INFO L85 PathProgramCache]: Analyzing trace with hash 483802873, now seen corresponding path program 1 times [2023-12-02 16:25:02,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:25:02,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812483335] [2023-12-02 16:25:02,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:25:02,718 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:25:02,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:25:02,719 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:25:02,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-02 16:25:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:25:03,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-02 16:25:03,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:25:03,708 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 19 treesize of output 1 [2023-12-02 16:25:04,260 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 69 treesize of output 54 [2023-12-02 16:25:04,673 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 69 treesize of output 54 [2023-12-02 16:25:05,084 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 69 treesize of output 54 [2023-12-02 16:25:05,516 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 69 treesize of output 54 [2023-12-02 16:25:05,940 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 69 treesize of output 54 [2023-12-02 16:25:06,438 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 114 treesize of output 87 [2023-12-02 16:25:06,567 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 114 treesize of output 87 [2023-12-02 16:25:06,727 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:25:06,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 56 [2023-12-02 16:25:06,746 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:25:06,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 49 [2023-12-02 16:25:06,842 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 252 proven. 128 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-02 16:25:06,842 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:25:06,976 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_808 (Array (_ BitVec 32) (_ BitVec 32)))) (fp.gt ((_ to_fp 8 24) c_currentRoundingMode (/ 5127.0 40.0)) (let ((.cse0 (select (select (store |c_#memory_int| |c_~#unsigned_long_int_Array_0~0.base| v_ArrVal_808) |c_~#float_Array_0~0.base|) |c_~#float_Array_0~0.offset|))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0))))) is different from false [2023-12-02 16:25:07,167 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:25:07,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [812483335] [2023-12-02 16:25:07,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [812483335] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:25:07,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [439688719] [2023-12-02 16:25:07,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:25:07,167 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:25:07,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:25:07,168 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:25:07,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2023-12-02 16:25:08,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:25:08,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-02 16:25:08,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:25:09,059 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 16:25:10,205 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 42 treesize of output 22 [2023-12-02 16:25:10,531 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 35 treesize of output 26 [2023-12-02 16:25:10,770 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 35 treesize of output 26 [2023-12-02 16:25:11,082 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 35 treesize of output 26 [2023-12-02 16:25:11,326 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 35 treesize of output 26 [2023-12-02 16:25:11,528 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 35 treesize of output 26 [2023-12-02 16:25:11,773 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 35 treesize of output 26 [2023-12-02 16:25:11,952 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 35 treesize of output 26 [2023-12-02 16:25:12,202 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 44 treesize of output 31 [2023-12-02 16:25:12,322 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 27 treesize of output 15 [2023-12-02 16:25:12,414 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 50 proven. 478 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-02 16:25:12,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:25:12,651 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_848 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) ((_ sign_extend 24) ((_ extract 7 0) (select (select (store |c_#memory_int| |c_~#unsigned_short_int_Array_0~0.base| v_ArrVal_848) |c_~#BOOL_unsigned_char_Array_0~0.base|) (bvadd |c_~#BOOL_unsigned_char_Array_0~0.offset| (_ bv1 32)))))) (_ bv0 8)))) is different from false [2023-12-02 16:25:12,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [439688719] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:25:12,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962406047] [2023-12-02 16:25:12,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:25:12,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:25:12,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:25:12,660 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:25:12,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-02 16:25:12,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:25:12,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-02 16:25:12,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:25:13,360 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 0 case distinctions, treesize of input 89 treesize of output 53 [2023-12-02 16:25:14,020 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:25:14,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 65 [2023-12-02 16:25:14,039 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-02 16:25:14,039 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:25:14,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962406047] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:25:14,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:25:14,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11, 16] total 33 [2023-12-02 16:25:14,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003699377] [2023-12-02 16:25:14,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:25:14,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 16:25:14,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:25:14,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 16:25:14,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1486, Unknown=2, NotChecked=158, Total=1806 [2023-12-02 16:25:14,042 INFO L87 Difference]: Start difference. First operand 489 states and 692 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:25:17,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:25:18,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:25:18,449 INFO L93 Difference]: Finished difference Result 1071 states and 1512 transitions. [2023-12-02 16:25:18,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 16:25:18,450 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 143 [2023-12-02 16:25:18,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:25:18,453 INFO L225 Difference]: With dead ends: 1071 [2023-12-02 16:25:18,453 INFO L226 Difference]: Without dead ends: 583 [2023-12-02 16:25:18,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=181, Invalid=1717, Unknown=2, NotChecked=170, Total=2070 [2023-12-02 16:25:18,456 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 257 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:25:18,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 494 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 820 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2023-12-02 16:25:18,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2023-12-02 16:25:18,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 492. [2023-12-02 16:25:18,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 448 states have (on average 1.3816964285714286) internal successors, (619), 451 states have internal predecessors, (619), 38 states have call successors, (38), 5 states have call predecessors, (38), 5 states have return successors, (38), 35 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-02 16:25:18,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 695 transitions. [2023-12-02 16:25:18,484 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 695 transitions. Word has length 143 [2023-12-02 16:25:18,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:25:18,485 INFO L495 AbstractCegarLoop]: Abstraction has 492 states and 695 transitions. [2023-12-02 16:25:18,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 8 states have internal predecessors, (56), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:25:18,485 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 695 transitions. [2023-12-02 16:25:18,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-12-02 16:25:18,487 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:25:18,487 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:25:18,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-02 16:25:18,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2023-12-02 16:25:18,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2023-12-02 16:25:19,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 16:25:19,089 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:25:19,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:25:19,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1404418148, now seen corresponding path program 1 times [2023-12-02 16:25:19,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:25:19,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2120652921] [2023-12-02 16:25:19,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:25:19,090 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:25:19,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:25:19,091 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:25:19,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 (28)] Waiting until timeout for monitored process [2023-12-02 16:25:19,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:25:19,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-02 16:25:19,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:25:20,666 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 69 treesize of output 54 [2023-12-02 16:25:21,073 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 69 treesize of output 54 [2023-12-02 16:25:21,480 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 69 treesize of output 54 [2023-12-02 16:25:21,933 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 69 treesize of output 54 [2023-12-02 16:25:22,355 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 69 treesize of output 54 [2023-12-02 16:25:22,898 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 114 treesize of output 87 [2023-12-02 16:25:23,031 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 114 treesize of output 87 [2023-12-02 16:25:23,207 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:25:23,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 56 [2023-12-02 16:25:23,350 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:25:23,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 56 [2023-12-02 16:25:23,486 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:25:23,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 49 [2023-12-02 16:25:23,578 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 252 proven. 128 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-02 16:25:23,579 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:25:24,040 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:25:24,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2120652921] [2023-12-02 16:25:24,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2120652921] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:25:24,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [53711501] [2023-12-02 16:25:24,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:25:24,041 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:25:24,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:25:24,041 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:25:24,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2023-12-02 16:25:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:25:25,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 16:25:25,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:25:25,540 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 0 case distinctions, treesize of input 17 treesize of output 17 [2023-12-02 16:25:25,730 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-02 16:25:25,730 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:25:25,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [53711501] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:25:25,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:25:25,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2023-12-02 16:25:25,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574547890] [2023-12-02 16:25:25,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:25:25,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:25:25,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:25:25,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:25:25,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=306, Unknown=11, NotChecked=0, Total=380 [2023-12-02 16:25:25,732 INFO L87 Difference]: Start difference. First operand 492 states and 695 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:25:26,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:25:26,409 INFO L93 Difference]: Finished difference Result 1029 states and 1451 transitions. [2023-12-02 16:25:26,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:25:26,410 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 143 [2023-12-02 16:25:26,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:25:26,412 INFO L225 Difference]: With dead ends: 1029 [2023-12-02 16:25:26,412 INFO L226 Difference]: Without dead ends: 538 [2023-12-02 16:25:26,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=63, Invalid=306, Unknown=11, NotChecked=0, Total=380 [2023-12-02 16:25:26,414 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 161 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:25:26,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 181 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 16:25:26,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2023-12-02 16:25:26,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 477. [2023-12-02 16:25:26,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 433 states have (on average 1.3787528868360277) internal successors, (597), 436 states have internal predecessors, (597), 38 states have call successors, (38), 5 states have call predecessors, (38), 5 states have return successors, (38), 35 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-02 16:25:26,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 673 transitions. [2023-12-02 16:25:26,441 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 673 transitions. Word has length 143 [2023-12-02 16:25:26,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:25:26,441 INFO L495 AbstractCegarLoop]: Abstraction has 477 states and 673 transitions. [2023-12-02 16:25:26,442 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:25:26,442 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 673 transitions. [2023-12-02 16:25:26,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-02 16:25:26,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:25:26,444 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:25:26,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 (28)] Ended with exit code 0 [2023-12-02 16:25:26,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2023-12-02 16:25:26,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 16:25:26,844 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:25:26,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:25:26,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1669454985, now seen corresponding path program 1 times [2023-12-02 16:25:26,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:25:26,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111760712] [2023-12-02 16:25:26,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:25:26,845 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:25:26,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:25:26,846 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:25:26,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 (30)] Waiting until timeout for monitored process [2023-12-02 16:25:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:25:27,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-02 16:25:27,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:25:27,799 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 19 treesize of output 1 [2023-12-02 16:25:28,380 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 69 treesize of output 54 [2023-12-02 16:25:28,796 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 69 treesize of output 54 [2023-12-02 16:25:29,195 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 69 treesize of output 54 [2023-12-02 16:25:29,612 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 69 treesize of output 54 [2023-12-02 16:25:30,029 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 69 treesize of output 54 [2023-12-02 16:25:30,525 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 114 treesize of output 87 [2023-12-02 16:25:30,639 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 114 treesize of output 87 [2023-12-02 16:25:30,798 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:25:30,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 56 [2023-12-02 16:25:30,827 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:25:30,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 49 [2023-12-02 16:25:30,907 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 252 proven. 128 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-02 16:25:30,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:25:31,329 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:25:31,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1111760712] [2023-12-02 16:25:31,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1111760712] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:25:31,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1073003239] [2023-12-02 16:25:31,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:25:31,330 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:25:31,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:25:31,331 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:25:31,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2023-12-02 16:25:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:25:33,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-02 16:25:33,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:25:33,817 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 15 treesize of output 1 [2023-12-02 16:25:34,293 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 23 treesize of output 11 [2023-12-02 16:25:34,906 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 21 [2023-12-02 16:25:35,187 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 23 treesize of output 16 [2023-12-02 16:25:35,435 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 23 treesize of output 16 [2023-12-02 16:25:35,706 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 23 treesize of output 16 [2023-12-02 16:25:35,826 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 28 [2023-12-02 16:25:35,980 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 34 treesize of output 23 [2023-12-02 16:25:36,186 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 46 treesize of output 31 [2023-12-02 16:25:36,192 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 257 proven. 158 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2023-12-02 16:25:36,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:25:37,330 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1023 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1025 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1026 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (bvadd |c_~#unsigned_long_int_Array_0~0.offset| (_ bv12 32)))) (let ((.cse1 (let ((.cse4 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_1023))) (store .cse4 |c_~#unsigned_long_int_Array_0~0.base| (let ((.cse5 (select .cse4 |c_~#unsigned_long_int_Array_0~0.base|))) (store .cse5 .cse3 (select .cse5 |c_~#unsigned_long_int_Array_0~0.offset|))))))) (or (let ((.cse0 (select (store .cse1 |c_~#float_Array_0~0.base| v_ArrVal_1025) |c_~#unsigned_long_int_Array_0~0.base|))) (bvule (select .cse0 |c_~#unsigned_long_int_Array_0~0.offset|) (select .cse0 (bvadd |c_~#unsigned_long_int_Array_0~0.offset| (_ bv8 32))))) (not (let ((.cse2 (select (store .cse1 |c_~#float_Array_0~0.base| v_ArrVal_1026) |c_~#unsigned_long_int_Array_0~0.base|))) (= (select .cse2 .cse3) (select .cse2 |c_~#unsigned_long_int_Array_0~0.offset|)))))))) is different from false [2023-12-02 16:25:37,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1073003239] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:25:37,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933004910] [2023-12-02 16:25:37,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:25:37,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:25:37,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:25:37,367 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:25:37,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-02 16:25:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:25:37,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-02 16:25:37,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:25:38,649 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 11 [2023-12-02 16:25:39,966 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:25:39,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 26 [2023-12-02 16:25:40,221 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 34 treesize of output 25 [2023-12-02 16:25:40,543 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 34 treesize of output 25 [2023-12-02 16:25:40,929 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 34 treesize of output 25 [2023-12-02 16:25:41,088 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:25:41,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 35 [2023-12-02 16:25:41,342 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 49 treesize of output 36 [2023-12-02 16:25:41,684 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 63 treesize of output 46 [2023-12-02 16:25:41,691 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 267 proven. 164 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2023-12-02 16:25:41,691 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:25:42,247 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1025 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1059 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1026 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd |c_~#unsigned_long_int_Array_0~0.offset| (_ bv12 32)))) (let ((.cse2 (let ((.cse4 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_1059))) (store .cse4 |c_~#unsigned_long_int_Array_0~0.base| (let ((.cse5 (select .cse4 |c_~#unsigned_long_int_Array_0~0.base|))) (store .cse5 .cse1 (select .cse5 |c_~#unsigned_long_int_Array_0~0.offset|))))))) (or (not (let ((.cse0 (select (store .cse2 |c_~#float_Array_0~0.base| v_ArrVal_1026) |c_~#unsigned_long_int_Array_0~0.base|))) (= (select .cse0 |c_~#unsigned_long_int_Array_0~0.offset|) (select .cse0 .cse1)))) (let ((.cse3 (select (store .cse2 |c_~#float_Array_0~0.base| v_ArrVal_1025) |c_~#unsigned_long_int_Array_0~0.base|))) (bvule (select .cse3 |c_~#unsigned_long_int_Array_0~0.offset|) (select .cse3 (bvadd |c_~#unsigned_long_int_Array_0~0.offset| (_ bv8 32))))))))) is different from false [2023-12-02 16:25:42,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933004910] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:25:42,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:25:42,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 18] total 41 [2023-12-02 16:25:42,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559839813] [2023-12-02 16:25:42,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:25:42,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-02 16:25:42,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:25:42,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-02 16:25:42,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=2577, Unknown=39, NotChecked=210, Total=3080 [2023-12-02 16:25:42,287 INFO L87 Difference]: Start difference. First operand 477 states and 673 transitions. Second operand has 42 states, 37 states have (on average 4.702702702702703) internal successors, (174), 38 states have internal predecessors, (174), 14 states have call successors, (54), 12 states have call predecessors, (54), 14 states have return successors, (54), 12 states have call predecessors, (54), 14 states have call successors, (54) [2023-12-02 16:26:04,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:26:04,410 INFO L93 Difference]: Finished difference Result 2160 states and 3000 transitions. [2023-12-02 16:26:04,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-12-02 16:26:04,411 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 37 states have (on average 4.702702702702703) internal successors, (174), 38 states have internal predecessors, (174), 14 states have call successors, (54), 12 states have call predecessors, (54), 14 states have return successors, (54), 12 states have call predecessors, (54), 14 states have call successors, (54) Word has length 144 [2023-12-02 16:26:04,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:26:04,418 INFO L225 Difference]: With dead ends: 2160 [2023-12-02 16:26:04,419 INFO L226 Difference]: Without dead ends: 1684 [2023-12-02 16:26:04,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 463 SyntacticMatches, 2 SemanticMatches, 124 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 4078 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=2297, Invalid=12866, Unknown=97, NotChecked=490, Total=15750 [2023-12-02 16:26:04,425 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 2865 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 4758 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2865 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 5290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 4758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:26:04,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2865 Valid, 1591 Invalid, 5290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 4758 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2023-12-02 16:26:04,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2023-12-02 16:26:04,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1094. [2023-12-02 16:26:04,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1094 states, 1001 states have (on average 1.3646353646353646) internal successors, (1366), 1009 states have internal predecessors, (1366), 76 states have call successors, (76), 16 states have call predecessors, (76), 16 states have return successors, (76), 68 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-02 16:26:04,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1094 states to 1094 states and 1518 transitions. [2023-12-02 16:26:04,512 INFO L78 Accepts]: Start accepts. Automaton has 1094 states and 1518 transitions. Word has length 144 [2023-12-02 16:26:04,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:26:04,513 INFO L495 AbstractCegarLoop]: Abstraction has 1094 states and 1518 transitions. [2023-12-02 16:26:04,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 37 states have (on average 4.702702702702703) internal successors, (174), 38 states have internal predecessors, (174), 14 states have call successors, (54), 12 states have call predecessors, (54), 14 states have return successors, (54), 12 states have call predecessors, (54), 14 states have call successors, (54) [2023-12-02 16:26:04,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1094 states and 1518 transitions. [2023-12-02 16:26:04,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-02 16:26:04,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:26:04,517 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:26:04,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2023-12-02 16:26:04,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 (30)] Ended with exit code 0 [2023-12-02 16:26:04,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-02 16:26:05,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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=3,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:26:05,118 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:26:05,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:26:05,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1338563496, now seen corresponding path program 1 times [2023-12-02 16:26:05,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:26:05,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032870652] [2023-12-02 16:26:05,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:26:05,119 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:26:05,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:26:05,120 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:26:05,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 (33)] Waiting until timeout for monitored process [2023-12-02 16:26:05,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:26:05,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-02 16:26:05,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:26:06,126 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 19 treesize of output 1 [2023-12-02 16:26:06,656 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 69 treesize of output 54 [2023-12-02 16:26:07,088 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 69 treesize of output 54 [2023-12-02 16:26:07,547 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 69 treesize of output 54 [2023-12-02 16:26:07,971 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 69 treesize of output 54 [2023-12-02 16:26:08,326 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 69 treesize of output 54 [2023-12-02 16:26:08,760 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 114 treesize of output 87 [2023-12-02 16:26:08,944 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:26:08,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 49 [2023-12-02 16:26:09,038 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 140 proven. 320 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-02 16:26:09,038 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:26:09,334 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:26:09,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032870652] [2023-12-02 16:26:09,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032870652] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:26:09,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1745052390] [2023-12-02 16:26:09,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:26:09,334 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:26:09,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:26:09,335 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:26:09,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2023-12-02 16:26:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:26:10,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-02 16:26:10,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:26:11,109 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 19 treesize of output 1 [2023-12-02 16:26:11,485 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 69 treesize of output 54 [2023-12-02 16:26:11,907 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 69 treesize of output 54 [2023-12-02 16:26:12,298 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 69 treesize of output 54 [2023-12-02 16:26:12,643 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 69 treesize of output 54 [2023-12-02 16:26:13,022 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 69 treesize of output 54 [2023-12-02 16:26:13,362 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 114 treesize of output 87 [2023-12-02 16:26:13,496 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:26:13,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 49 [2023-12-02 16:26:13,595 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 140 proven. 320 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-02 16:26:13,595 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:26:13,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1745052390] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:26:13,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344633872] [2023-12-02 16:26:13,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:26:13,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:26:13,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:26:13,705 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:26:13,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-02 16:26:13,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:26:13,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 16:26:13,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:26:14,635 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 16:26:14,692 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 16:26:14,788 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:26:14,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 17 [2023-12-02 16:26:14,867 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-02 16:26:14,867 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:26:14,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344633872] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:26:14,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:26:14,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 11] total 17 [2023-12-02 16:26:14,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500297492] [2023-12-02 16:26:14,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:26:14,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 16:26:14,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:26:14,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 16:26:14,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2023-12-02 16:26:14,870 INFO L87 Difference]: Start difference. First operand 1094 states and 1518 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:26:16,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:26:16,816 INFO L93 Difference]: Finished difference Result 2394 states and 3328 transitions. [2023-12-02 16:26:16,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 16:26:16,817 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 144 [2023-12-02 16:26:16,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:26:16,824 INFO L225 Difference]: With dead ends: 2394 [2023-12-02 16:26:16,825 INFO L226 Difference]: Without dead ends: 1301 [2023-12-02 16:26:16,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 465 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2023-12-02 16:26:16,827 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 343 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-02 16:26:16,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 471 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-02 16:26:16,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1301 states. [2023-12-02 16:26:16,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1301 to 1044. [2023-12-02 16:26:16,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 951 states have (on average 1.352260778128286) internal successors, (1286), 959 states have internal predecessors, (1286), 76 states have call successors, (76), 16 states have call predecessors, (76), 16 states have return successors, (76), 68 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-02 16:26:16,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1438 transitions. [2023-12-02 16:26:16,913 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1438 transitions. Word has length 144 [2023-12-02 16:26:16,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:26:16,913 INFO L495 AbstractCegarLoop]: Abstraction has 1044 states and 1438 transitions. [2023-12-02 16:26:16,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:26:16,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1438 transitions. [2023-12-02 16:26:16,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-12-02 16:26:16,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:26:16,917 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:26:16,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 (33)] Ended with exit code 0 [2023-12-02 16:26:17,124 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (34)] Ended with exit code 0 [2023-12-02 16:26:17,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-12-02 16:26:17,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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=3,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:26:17,518 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:26:17,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:26:17,518 INFO L85 PathProgramCache]: Analyzing trace with hash -2045509559, now seen corresponding path program 1 times [2023-12-02 16:26:17,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:26:17,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663876480] [2023-12-02 16:26:17,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:26:17,519 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:26:17,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:26:17,520 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:26:17,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 (36)] Waiting until timeout for monitored process [2023-12-02 16:26:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:26:17,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 16:26:17,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:26:17,843 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-12-02 16:26:17,843 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:26:17,843 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:26:17,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663876480] [2023-12-02 16:26:17,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663876480] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:26:17,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:26:17,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:26:17,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964275094] [2023-12-02 16:26:17,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:26:17,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:26:17,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:26:17,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:26:17,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:26:17,845 INFO L87 Difference]: Start difference. First operand 1044 states and 1438 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-02 16:26:17,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:26:17,933 INFO L93 Difference]: Finished difference Result 2094 states and 2886 transitions. [2023-12-02 16:26:17,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:26:17,933 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 144 [2023-12-02 16:26:17,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:26:17,937 INFO L225 Difference]: With dead ends: 2094 [2023-12-02 16:26:17,937 INFO L226 Difference]: Without dead ends: 1051 [2023-12-02 16:26:17,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 141 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 16:26:17,939 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 7 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:26:17,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 498 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:26:17,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2023-12-02 16:26:18,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 1044. [2023-12-02 16:26:18,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 951 states have (on average 1.3501577287066246) internal successors, (1284), 959 states have internal predecessors, (1284), 76 states have call successors, (76), 16 states have call predecessors, (76), 16 states have return successors, (76), 68 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-02 16:26:18,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1436 transitions. [2023-12-02 16:26:18,010 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1436 transitions. Word has length 144 [2023-12-02 16:26:18,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:26:18,010 INFO L495 AbstractCegarLoop]: Abstraction has 1044 states and 1436 transitions. [2023-12-02 16:26:18,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-02 16:26:18,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1436 transitions. [2023-12-02 16:26:18,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-02 16:26:18,013 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:26:18,014 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:26:18,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 (36)] Forceful destruction successful, exit code 0 [2023-12-02 16:26:18,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:26:18,219 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:26:18,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:26:18,219 INFO L85 PathProgramCache]: Analyzing trace with hash -539131667, now seen corresponding path program 1 times [2023-12-02 16:26:18,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:26:18,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [434547512] [2023-12-02 16:26:18,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:26:18,220 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:26:18,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:26:18,220 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:26:18,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 (37)] Waiting until timeout for monitored process [2023-12-02 16:26:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:26:18,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 16:26:18,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:26:18,565 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-02 16:26:18,565 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:26:18,565 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:26:18,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [434547512] [2023-12-02 16:26:18,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [434547512] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:26:18,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:26:18,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:26:18,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717764643] [2023-12-02 16:26:18,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:26:18,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:26:18,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:26:18,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:26:18,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:26:18,568 INFO L87 Difference]: Start difference. First operand 1044 states and 1436 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:26:18,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:26:18,645 INFO L93 Difference]: Finished difference Result 2089 states and 2875 transitions. [2023-12-02 16:26:18,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:26:18,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 146 [2023-12-02 16:26:18,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:26:18,652 INFO L225 Difference]: With dead ends: 2089 [2023-12-02 16:26:18,652 INFO L226 Difference]: Without dead ends: 1046 [2023-12-02 16:26:18,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:26:18,654 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 0 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:26:18,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 327 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:26:18,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2023-12-02 16:26:18,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1046. [2023-12-02 16:26:18,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 953 states have (on average 1.3494228751311648) internal successors, (1286), 961 states have internal predecessors, (1286), 76 states have call successors, (76), 16 states have call predecessors, (76), 16 states have return successors, (76), 68 states have call predecessors, (76), 76 states have call successors, (76) [2023-12-02 16:26:18,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1438 transitions. [2023-12-02 16:26:18,722 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1438 transitions. Word has length 146 [2023-12-02 16:26:18,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:26:18,723 INFO L495 AbstractCegarLoop]: Abstraction has 1046 states and 1438 transitions. [2023-12-02 16:26:18,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:26:18,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1438 transitions. [2023-12-02 16:26:18,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-02 16:26:18,724 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:26:18,725 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:26:18,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 (37)] Ended with exit code 0 [2023-12-02 16:26:18,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:26:18,925 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:26:18,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:26:18,926 INFO L85 PathProgramCache]: Analyzing trace with hash 847071727, now seen corresponding path program 1 times [2023-12-02 16:26:18,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:26:18,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1851377331] [2023-12-02 16:26:18,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:26:18,926 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:26:18,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:26:18,927 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:26:18,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 (38)] Waiting until timeout for monitored process [2023-12-02 16:26:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:26:19,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-02 16:26:19,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:26:19,601 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 14 treesize of output 10 [2023-12-02 16:26:20,176 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 0 case distinctions, treesize of input 52 treesize of output 24 [2023-12-02 16:26:20,491 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 41 treesize of output 32 [2023-12-02 16:26:20,725 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 41 treesize of output 32 [2023-12-02 16:26:20,959 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 41 treesize of output 32 [2023-12-02 16:26:21,227 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 41 treesize of output 32 [2023-12-02 16:26:21,463 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 41 treesize of output 32 [2023-12-02 16:26:21,695 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 41 treesize of output 32 [2023-12-02 16:26:21,880 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 41 treesize of output 32 [2023-12-02 16:26:22,059 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 0 case distinctions, treesize of input 52 treesize of output 33 [2023-12-02 16:26:22,117 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:26:22,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 24 [2023-12-02 16:26:22,165 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 50 proven. 478 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-02 16:26:22,165 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:26:22,355 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:26:22,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1851377331] [2023-12-02 16:26:22,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1851377331] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:26:22,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2131932801] [2023-12-02 16:26:22,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:26:22,355 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:26:22,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:26:22,356 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:26:22,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2023-12-02 16:26:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:26:24,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-02 16:26:24,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:26:24,313 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 16:26:25,241 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 39 treesize of output 30 [2023-12-02 16:26:25,637 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 43 treesize of output 32 [2023-12-02 16:26:25,899 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 43 treesize of output 32 [2023-12-02 16:26:26,223 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 43 treesize of output 32 [2023-12-02 16:26:26,539 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 43 treesize of output 32 [2023-12-02 16:26:26,827 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 43 treesize of output 32 [2023-12-02 16:26:27,148 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 43 treesize of output 32 [2023-12-02 16:26:27,388 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 43 treesize of output 32 [2023-12-02 16:26:27,693 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 52 treesize of output 42 [2023-12-02 16:26:27,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2023-12-02 16:26:27,860 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 50 proven. 478 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-12-02 16:26:27,860 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:26:27,895 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1280 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) ((_ sign_extend 24) ((_ extract 7 0) (select (select (store |c_#memory_int| |c_~#unsigned_short_int_Array_0~0.base| v_ArrVal_1280) |c_~#BOOL_unsigned_char_Array_0~0.base|) (bvadd |c_~#BOOL_unsigned_char_Array_0~0.offset| (_ bv1 32)))))) (_ bv0 8)))) is different from false [2023-12-02 16:26:27,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2131932801] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:26:27,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729202485] [2023-12-02 16:26:27,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:26:27,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:26:27,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:26:27,904 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:26:27,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-12-02 16:26:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:26:28,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-02 16:26:28,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:26:29,838 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 0 case distinctions, treesize of input 68 treesize of output 32 [2023-12-02 16:26:30,139 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 57 treesize of output 42 [2023-12-02 16:26:30,504 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 57 treesize of output 42 [2023-12-02 16:26:30,887 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 57 treesize of output 42 [2023-12-02 16:26:31,272 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 57 treesize of output 42 [2023-12-02 16:26:31,617 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 57 treesize of output 42 [2023-12-02 16:26:32,153 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 57 treesize of output 42 [2023-12-02 16:26:32,359 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 57 treesize of output 42 [2023-12-02 16:26:32,592 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 0 case distinctions, treesize of input 68 treesize of output 32 [2023-12-02 16:26:32,818 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 240 proven. 128 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2023-12-02 16:26:32,818 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:26:33,378 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1316 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse1 (select (select (store |c_#memory_int| |c_~#unsigned_long_int_Array_0~0.base| v_ArrVal_1316) |c_~#float_Array_0~0.base|) |c_~#float_Array_0~0.offset|))) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1))))) (or (fp.lt ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) .cse0) (fp.gt ((_ to_fp 8 24) c_currentRoundingMode (/ 5127.0 40.0)) .cse0)))) is different from false [2023-12-02 16:26:33,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729202485] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:26:33,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:26:33,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 10] total 40 [2023-12-02 16:26:33,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873656051] [2023-12-02 16:26:33,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:26:33,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-12-02 16:26:33,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:26:33,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-12-02 16:26:33,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=2140, Unknown=35, NotChecked=194, Total=2652 [2023-12-02 16:26:33,787 INFO L87 Difference]: Start difference. First operand 1046 states and 1438 transitions. Second operand has 41 states, 37 states have (on average 4.702702702702703) internal successors, (174), 35 states have internal predecessors, (174), 17 states have call successors, (54), 17 states have call predecessors, (54), 17 states have return successors, (54), 16 states have call predecessors, (54), 17 states have call successors, (54) [2023-12-02 16:26:47,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:26:47,104 INFO L93 Difference]: Finished difference Result 4432 states and 6008 transitions. [2023-12-02 16:26:47,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-02 16:26:47,105 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 37 states have (on average 4.702702702702703) internal successors, (174), 35 states have internal predecessors, (174), 17 states have call successors, (54), 17 states have call predecessors, (54), 17 states have return successors, (54), 16 states have call predecessors, (54), 17 states have call successors, (54) Word has length 146 [2023-12-02 16:26:47,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:26:47,117 INFO L225 Difference]: With dead ends: 4432 [2023-12-02 16:26:47,117 INFO L226 Difference]: Without dead ends: 3387 [2023-12-02 16:26:47,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 504 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2325 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=1530, Invalid=7183, Unknown=37, NotChecked=370, Total=9120 [2023-12-02 16:26:47,121 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 3388 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 2416 mSolverCounterSat, 720 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3388 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 3136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 720 IncrementalHoareTripleChecker+Valid, 2416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2023-12-02 16:26:47,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3388 Valid, 720 Invalid, 3136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [720 Valid, 2416 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2023-12-02 16:26:47,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3387 states. [2023-12-02 16:26:47,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3387 to 2648. [2023-12-02 16:26:47,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2648 states, 2431 states have (on average 1.3471822295351707) internal successors, (3275), 2459 states have internal predecessors, (3275), 152 states have call successors, (152), 64 states have call predecessors, (152), 64 states have return successors, (152), 124 states have call predecessors, (152), 152 states have call successors, (152) [2023-12-02 16:26:47,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2648 states to 2648 states and 3579 transitions. [2023-12-02 16:26:47,308 INFO L78 Accepts]: Start accepts. Automaton has 2648 states and 3579 transitions. Word has length 146 [2023-12-02 16:26:47,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:26:47,308 INFO L495 AbstractCegarLoop]: Abstraction has 2648 states and 3579 transitions. [2023-12-02 16:26:47,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 37 states have (on average 4.702702702702703) internal successors, (174), 35 states have internal predecessors, (174), 17 states have call successors, (54), 17 states have call predecessors, (54), 17 states have return successors, (54), 16 states have call predecessors, (54), 17 states have call successors, (54) [2023-12-02 16:26:47,309 INFO L276 IsEmpty]: Start isEmpty. Operand 2648 states and 3579 transitions. [2023-12-02 16:26:47,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-02 16:26:47,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:26:47,314 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:26:47,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 (38)] Ended with exit code 0 [2023-12-02 16:26:47,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (39)] Ended with exit code 0 [2023-12-02 16:26:47,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-12-02 16:26:47,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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=3,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:26:47,916 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:26:47,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:26:47,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1828916397, now seen corresponding path program 1 times [2023-12-02 16:26:47,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:26:47,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886198849] [2023-12-02 16:26:47,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:26:47,917 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:26:47,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:26:47,918 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:26:47,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 (41)] Waiting until timeout for monitored process [2023-12-02 16:26:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:26:48,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-02 16:26:48,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:26:48,899 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 19 treesize of output 1 [2023-12-02 16:26:49,549 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 69 treesize of output 54 [2023-12-02 16:26:50,015 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 69 treesize of output 54 [2023-12-02 16:26:50,458 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 69 treesize of output 54 [2023-12-02 16:26:50,862 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 69 treesize of output 54 [2023-12-02 16:26:51,332 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 69 treesize of output 54 [2023-12-02 16:26:51,899 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 114 treesize of output 87 [2023-12-02 16:26:52,124 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 114 treesize of output 87 [2023-12-02 16:26:52,223 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:26:52,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 49 [2023-12-02 16:26:52,310 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 252 proven. 128 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-02 16:26:52,310 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:26:52,709 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:26:52,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886198849] [2023-12-02 16:26:52,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1886198849] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:26:52,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1721520059] [2023-12-02 16:26:52,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:26:52,710 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:26:52,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:26:52,711 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:26:52,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (42)] Waiting until timeout for monitored process [2023-12-02 16:26:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:26:53,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-02 16:26:53,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:26:54,464 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 19 treesize of output 1 [2023-12-02 16:26:54,828 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 69 treesize of output 54 [2023-12-02 16:26:55,297 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 69 treesize of output 54 [2023-12-02 16:26:55,778 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 69 treesize of output 54 [2023-12-02 16:26:56,261 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 69 treesize of output 54 [2023-12-02 16:26:56,742 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 69 treesize of output 54 [2023-12-02 16:26:57,143 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 114 treesize of output 87 [2023-12-02 16:26:57,298 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 114 treesize of output 87 [2023-12-02 16:26:57,353 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:26:57,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 49 [2023-12-02 16:26:57,447 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 252 proven. 128 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-12-02 16:26:57,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:26:57,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1721520059] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:26:57,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783202235] [2023-12-02 16:26:57,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:26:57,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:26:57,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:26:57,743 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:26:57,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-12-02 16:26:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:26:57,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-02 16:26:57,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:26:59,326 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 0 case distinctions, treesize of input 68 treesize of output 32 [2023-12-02 16:27:00,386 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 87 treesize of output 66 [2023-12-02 16:27:00,991 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 87 treesize of output 66 [2023-12-02 16:27:01,594 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 87 treesize of output 66 [2023-12-02 16:27:02,207 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 87 treesize of output 66 [2023-12-02 16:27:02,738 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 87 treesize of output 66 [2023-12-02 16:27:03,581 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 132 treesize of output 99 [2023-12-02 16:27:03,766 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 114 treesize of output 87 [2023-12-02 16:27:04,001 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 276 proven. 128 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-12-02 16:27:04,001 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:27:05,321 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_skolemized_q#valueAsBitvector_206| (_ BitVec 32)) (v_ArrVal_1428 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (store |c_#memory_int| |c_~#unsigned_long_int_Array_0~0.base| v_ArrVal_1428) |c_~#float_Array_0~0.base|)) (.cse3 ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0))) (.cse2 (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_206|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_206|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_206|)))) (or (not (fp.geq (let ((.cse0 (select .cse1 (bvadd (_ bv8 32) |c_~#float_Array_0~0.offset|)))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0))) .cse2)) (not (fp.lt .cse3 (let ((.cse4 (select .cse1 |c_~#float_Array_0~0.offset|))) (fp ((_ extract 31 31) .cse4) ((_ extract 30 23) .cse4) ((_ extract 22 0) .cse4))))) (not (= .cse3 .cse2))))) is different from false [2023-12-02 16:27:06,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783202235] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:27:06,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:27:06,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 14] total 21 [2023-12-02 16:27:06,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102215014] [2023-12-02 16:27:06,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:27:06,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 16:27:06,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:27:06,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 16:27:06,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1010, Unknown=18, NotChecked=66, Total=1260 [2023-12-02 16:27:06,124 INFO L87 Difference]: Start difference. First operand 2648 states and 3579 transitions. Second operand has 22 states, 22 states have (on average 4.363636363636363) internal successors, (96), 21 states have internal predecessors, (96), 6 states have call successors, (30), 6 states have call predecessors, (30), 6 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2023-12-02 16:27:19,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:27:19,856 INFO L93 Difference]: Finished difference Result 5767 states and 7791 transitions. [2023-12-02 16:27:19,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-02 16:27:19,858 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.363636363636363) internal successors, (96), 21 states have internal predecessors, (96), 6 states have call successors, (30), 6 states have call predecessors, (30), 6 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) Word has length 146 [2023-12-02 16:27:19,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:27:19,871 INFO L225 Difference]: With dead ends: 5767 [2023-12-02 16:27:19,871 INFO L226 Difference]: Without dead ends: 3120 [2023-12-02 16:27:19,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 491 SyntacticMatches, 6 SemanticMatches, 53 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=461, Invalid=2376, Unknown=29, NotChecked=104, Total=2970 [2023-12-02 16:27:19,875 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 1662 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 2815 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1666 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 3194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 2815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:27:19,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1666 Valid, 897 Invalid, 3194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 2815 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2023-12-02 16:27:19,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3120 states. [2023-12-02 16:27:20,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3120 to 2550. [2023-12-02 16:27:20,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2550 states, 2313 states have (on average 1.3458711629917857) internal successors, (3113), 2343 states have internal predecessors, (3113), 164 states have call successors, (164), 72 states have call predecessors, (164), 72 states have return successors, (164), 134 states have call predecessors, (164), 164 states have call successors, (164) [2023-12-02 16:27:20,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2550 states to 2550 states and 3441 transitions. [2023-12-02 16:27:20,048 INFO L78 Accepts]: Start accepts. Automaton has 2550 states and 3441 transitions. Word has length 146 [2023-12-02 16:27:20,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:27:20,049 INFO L495 AbstractCegarLoop]: Abstraction has 2550 states and 3441 transitions. [2023-12-02 16:27:20,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.363636363636363) internal successors, (96), 21 states have internal predecessors, (96), 6 states have call successors, (30), 6 states have call predecessors, (30), 6 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2023-12-02 16:27:20,049 INFO L276 IsEmpty]: Start isEmpty. Operand 2550 states and 3441 transitions. [2023-12-02 16:27:20,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-02 16:27:20,052 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:27:20,052 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:27:20,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (42)] Ended with exit code 0 [2023-12-02 16:27:20,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-12-02 16:27:20,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 (41)] Ended with exit code 0 [2023-12-02 16:27:20,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:27:20,654 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:27:20,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:27:20,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1610061679, now seen corresponding path program 1 times [2023-12-02 16:27:20,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:27:20,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2139464329] [2023-12-02 16:27:20,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:27:20,655 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:27:20,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:27:20,655 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:27:20,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 (44)] Waiting until timeout for monitored process [2023-12-02 16:27:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:27:21,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-02 16:27:21,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:27:21,640 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 16:27:21,814 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 18 treesize of output 13 [2023-12-02 16:27:21,979 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 18 treesize of output 13 [2023-12-02 16:27:22,136 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 18 treesize of output 13 [2023-12-02 16:27:22,268 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:27:22,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 22 [2023-12-02 16:27:22,316 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 251 proven. 12 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2023-12-02 16:27:22,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:27:22,623 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1462 (Array (_ BitVec 32) (_ BitVec 32))) (|~#unsigned_short_int_Array_0~0.offset| (_ BitVec 32))) (let ((.cse1 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_1462))) (let ((.cse3 (select .cse1 |c_~#unsigned_short_int_Array_0~0.base|))) (let ((.cse0 ((_ zero_extend 16) ((_ extract 15 0) (select .cse3 (bvadd |~#unsigned_short_int_Array_0~0.offset| (_ bv2 32)))))) (.cse2 ((_ zero_extend 16) ((_ extract 15 0) (select .cse3 |~#unsigned_short_int_Array_0~0.offset|))))) (or (not (bvugt .cse0 (bvadd (select (select .cse1 |c_~#unsigned_long_int_Array_0~0.base|) (bvadd (_ bv4 32) |c_~#unsigned_long_int_Array_0~0.offset|)) .cse2))) (not (bvsle .cse0 .cse2))))))) is different from false [2023-12-02 16:27:22,662 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:27:22,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2139464329] [2023-12-02 16:27:22,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2139464329] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:27:22,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [401517326] [2023-12-02 16:27:22,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:27:22,663 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:27:22,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:27:22,664 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:27:22,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (45)] Waiting until timeout for monitored process [2023-12-02 16:27:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:27:24,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-02 16:27:24,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:27:24,999 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 19 treesize of output 1 [2023-12-02 16:27:25,360 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 18 treesize of output 13 [2023-12-02 16:27:25,542 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 13 [2023-12-02 16:27:25,769 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 18 treesize of output 13 [2023-12-02 16:27:26,181 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 251 proven. 12 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2023-12-02 16:27:26,181 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:27:26,303 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1499 (Array (_ BitVec 32) (_ BitVec 32)))) (not (let ((.cse0 (select (store |c_#memory_int| |c_~#float_Array_0~0.base| v_ArrVal_1499) |c_~#unsigned_short_int_Array_0~0.base|))) (bvsle ((_ zero_extend 16) ((_ extract 15 0) (select .cse0 (bvadd (_ bv2 32) |c_~#unsigned_short_int_Array_0~0.offset|)))) ((_ zero_extend 16) ((_ extract 15 0) (select .cse0 |c_~#unsigned_short_int_Array_0~0.offset|))))))) is different from false [2023-12-02 16:27:26,351 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1497 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1499 (Array (_ BitVec 32) (_ BitVec 32)))) (not (let ((.cse0 (select (store (store |c_#memory_int| |c_~#unsigned_long_int_Array_0~0.base| v_ArrVal_1497) |c_~#float_Array_0~0.base| v_ArrVal_1499) |c_~#unsigned_short_int_Array_0~0.base|))) (bvsle ((_ zero_extend 16) ((_ extract 15 0) (select .cse0 (bvadd (_ bv2 32) |c_~#unsigned_short_int_Array_0~0.offset|)))) ((_ zero_extend 16) ((_ extract 15 0) (select .cse0 |c_~#unsigned_short_int_Array_0~0.offset|))))))) is different from false [2023-12-02 16:27:27,107 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1496 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1497 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1499 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_1496))) (let ((.cse5 (select .cse2 |c_~#unsigned_short_int_Array_0~0.base|)) (.cse1 (bvadd (_ bv2 32) |c_~#unsigned_short_int_Array_0~0.offset|))) (let ((.cse3 ((_ zero_extend 16) ((_ extract 15 0) (select .cse5 .cse1)))) (.cse4 ((_ zero_extend 16) ((_ extract 15 0) (select .cse5 |c_~#unsigned_short_int_Array_0~0.offset|))))) (or (not (let ((.cse0 (select (store (store .cse2 |c_~#unsigned_long_int_Array_0~0.base| v_ArrVal_1497) |c_~#float_Array_0~0.base| v_ArrVal_1499) |c_~#unsigned_short_int_Array_0~0.base|))) (bvsle ((_ zero_extend 16) ((_ extract 15 0) (select .cse0 .cse1))) ((_ zero_extend 16) ((_ extract 15 0) (select .cse0 |c_~#unsigned_short_int_Array_0~0.offset|)))))) (not (bvsle .cse3 .cse4)) (not (bvugt .cse3 (bvadd .cse4 (select (select .cse2 |c_~#unsigned_long_int_Array_0~0.base|) (bvadd (_ bv4 32) |c_~#unsigned_long_int_Array_0~0.offset|)))))))))) is different from false [2023-12-02 16:27:27,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [401517326] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:27:27,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906286960] [2023-12-02 16:27:27,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:27:27,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:27:27,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:27:27,186 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:27:27,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-12-02 16:27:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:27:28,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-02 16:27:28,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:27:29,041 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:27:29,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 41 [2023-12-02 16:27:29,899 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 53 treesize of output 43 [2023-12-02 16:27:30,094 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 53 treesize of output 43 [2023-12-02 16:27:31,240 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 24 proven. 27 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-12-02 16:27:31,241 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:27:32,365 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1530 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_int| |c_~#float_Array_0~0.base| v_ArrVal_1530))) (let ((.cse0 (select .cse1 |c_~#unsigned_long_int_Array_0~0.base|))) (= (select .cse0 (bvadd |c_~#unsigned_long_int_Array_0~0.offset| (_ bv12 32))) (bvadd (select .cse0 (bvadd |c_~#unsigned_long_int_Array_0~0.offset| (_ bv8 32))) ((_ zero_extend 16) ((_ extract 15 0) (select (select .cse1 |c_~#unsigned_short_int_Array_0~0.base|) (bvadd (_ bv2 32) |c_~#unsigned_short_int_Array_0~0.offset|)))) (bvneg (select .cse0 |c_~#unsigned_long_int_Array_0~0.offset|))))))) is different from false [2023-12-02 16:27:33,527 WARN L854 $PredicateComparison]: unable to prove that (forall ((|~#unsigned_long_int_Array_0~0.offset| (_ BitVec 32))) (let ((.cse4 (select |c_#memory_int| |c_~#unsigned_long_int_Array_0~0.base|))) (let ((.cse3 (bvadd (_ bv8 32) |~#unsigned_long_int_Array_0~0.offset|)) (.cse6 (select .cse4 |~#unsigned_long_int_Array_0~0.offset|))) (let ((.cse5 (bvadd (select .cse4 .cse3) (bvneg .cse6) |c_ULTIMATE.start_step_#t~ite23#1|))) (or (forall ((v_ArrVal_1530 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd |~#unsigned_long_int_Array_0~0.offset| (_ bv12 32)))) (let ((.cse2 (store (store |c_#memory_int| |c_~#unsigned_long_int_Array_0~0.base| (store .cse4 .cse1 .cse5)) |c_~#float_Array_0~0.base| v_ArrVal_1530))) (let ((.cse0 (select .cse2 |c_~#unsigned_long_int_Array_0~0.base|))) (= (select .cse0 .cse1) (bvadd (bvneg (select .cse0 |~#unsigned_long_int_Array_0~0.offset|)) ((_ zero_extend 16) ((_ extract 15 0) (select (select .cse2 |c_~#unsigned_short_int_Array_0~0.base|) (bvadd (_ bv2 32) |c_~#unsigned_short_int_Array_0~0.offset|)))) (select .cse0 .cse3))))))) (not (bvuge .cse6 .cse5))))))) is different from false [2023-12-02 16:27:39,067 WARN L293 SmtUtils]: Spent 5.52s on a formula simplification. DAG size of input: 54 DAG size of output: 41 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-12-02 16:27:39,067 INFO L349 Elim1Store]: treesize reduction 51, result has 52.8 percent of original size [2023-12-02 16:27:39,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 202 treesize of output 110 [2023-12-02 16:27:39,290 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:27:39,290 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 200 treesize of output 163 [2023-12-02 16:27:39,417 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:27:39,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 92 [2023-12-02 16:27:40,768 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-02 16:27:40,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906286960] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 16:27:40,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:27:40,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [10, 10, 14] total 43 [2023-12-02 16:27:40,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001170935] [2023-12-02 16:27:40,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:27:40,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 16:27:40,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:27:40,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 16:27:40,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=2327, Unknown=9, NotChecked=618, Total=3192 [2023-12-02 16:27:40,771 INFO L87 Difference]: Start difference. First operand 2550 states and 3441 transitions. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:27:55,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 16:28:26,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:28:26,000 INFO L93 Difference]: Finished difference Result 7542 states and 10385 transitions. [2023-12-02 16:28:26,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 16:28:26,002 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 146 [2023-12-02 16:28:26,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:28:26,020 INFO L225 Difference]: With dead ends: 7542 [2023-12-02 16:28:26,020 INFO L226 Difference]: Without dead ends: 4993 [2023-12-02 16:28:26,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 666 GetRequests, 589 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1643 ImplicationChecksByTransitivity, 36.6s TimeCoverageRelationStatistics Valid=486, Invalid=4641, Unknown=9, NotChecked=870, Total=6006 [2023-12-02 16:28:26,024 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 835 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 1401 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 2405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 988 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2023-12-02 16:28:26,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 920 Invalid, 2405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1401 Invalid, 0 Unknown, 988 Unchecked, 14.3s Time] [2023-12-02 16:28:26,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4993 states. [2023-12-02 16:28:26,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4993 to 2772. [2023-12-02 16:28:26,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2772 states, 2535 states have (on average 1.3546351084812622) internal successors, (3434), 2565 states have internal predecessors, (3434), 164 states have call successors, (164), 72 states have call predecessors, (164), 72 states have return successors, (164), 134 states have call predecessors, (164), 164 states have call successors, (164) [2023-12-02 16:28:26,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2772 states to 2772 states and 3762 transitions. [2023-12-02 16:28:26,248 INFO L78 Accepts]: Start accepts. Automaton has 2772 states and 3762 transitions. Word has length 146 [2023-12-02 16:28:26,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:28:26,254 INFO L495 AbstractCegarLoop]: Abstraction has 2772 states and 3762 transitions. [2023-12-02 16:28:26,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:28:26,254 INFO L276 IsEmpty]: Start isEmpty. Operand 2772 states and 3762 transitions. [2023-12-02 16:28:26,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-02 16:28:26,257 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:28:26,257 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:28:26,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (45)] Ended with exit code 0 [2023-12-02 16:28:26,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2023-12-02 16:28:26,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 (44)] Ended with exit code 0 [2023-12-02 16:28:26,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:28:26,859 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:28:26,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:28:26,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1351896241, now seen corresponding path program 1 times [2023-12-02 16:28:26,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:28:26,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [387756270] [2023-12-02 16:28:26,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:28:26,860 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:28:26,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:28:26,860 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:28:26,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 (47)] Waiting until timeout for monitored process [2023-12-02 16:28:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:28:27,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-02 16:28:27,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:28:28,057 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 16:28:28,294 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 18 treesize of output 13 [2023-12-02 16:28:28,505 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 18 treesize of output 13 [2023-12-02 16:28:28,731 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 18 treesize of output 13 [2023-12-02 16:28:28,905 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:28:28,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 22 [2023-12-02 16:28:28,975 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 251 proven. 12 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2023-12-02 16:28:28,975 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:28:29,379 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1562 (Array (_ BitVec 32) (_ BitVec 32))) (|~#unsigned_short_int_Array_0~0.offset| (_ BitVec 32))) (let ((.cse2 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_1562))) (let ((.cse3 (select .cse2 |c_~#unsigned_short_int_Array_0~0.base|))) (let ((.cse0 ((_ zero_extend 16) ((_ extract 15 0) (select .cse3 (bvadd |~#unsigned_short_int_Array_0~0.offset| (_ bv2 32)))))) (.cse1 ((_ zero_extend 16) ((_ extract 15 0) (select .cse3 |~#unsigned_short_int_Array_0~0.offset|))))) (or (not (bvsle .cse0 .cse1)) (not (bvugt .cse0 (bvadd (select (select .cse2 |c_~#unsigned_long_int_Array_0~0.base|) (bvadd (_ bv4 32) |c_~#unsigned_long_int_Array_0~0.offset|)) .cse1)))))))) is different from false [2023-12-02 16:28:29,426 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:28:29,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [387756270] [2023-12-02 16:28:29,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [387756270] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:28:29,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1413667599] [2023-12-02 16:28:29,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:28:29,426 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:28:29,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:28:29,427 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:28:29,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (48)] Waiting until timeout for monitored process [2023-12-02 16:28:30,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:28:30,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-02 16:28:30,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:28:31,577 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 19 treesize of output 1 [2023-12-02 16:28:31,733 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 18 treesize of output 13 [2023-12-02 16:28:31,962 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 18 treesize of output 13 [2023-12-02 16:28:32,207 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 18 treesize of output 13 [2023-12-02 16:28:32,279 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:28:32,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 22 [2023-12-02 16:28:32,342 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 251 proven. 12 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2023-12-02 16:28:32,342 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:28:32,440 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1594 (Array (_ BitVec 32) (_ BitVec 32))) (|~#unsigned_short_int_Array_0~0.offset| (_ BitVec 32))) (let ((.cse2 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_1594))) (let ((.cse3 (select .cse2 |c_~#unsigned_short_int_Array_0~0.base|))) (let ((.cse0 ((_ zero_extend 16) ((_ extract 15 0) (select .cse3 (bvadd |~#unsigned_short_int_Array_0~0.offset| (_ bv2 32)))))) (.cse1 ((_ zero_extend 16) ((_ extract 15 0) (select .cse3 |~#unsigned_short_int_Array_0~0.offset|))))) (or (not (bvsle .cse0 .cse1)) (not (bvugt .cse0 (bvadd .cse1 (select (select .cse2 |c_~#unsigned_long_int_Array_0~0.base|) (bvadd (_ bv4 32) |c_~#unsigned_long_int_Array_0~0.offset|)))))))))) is different from false [2023-12-02 16:28:32,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1413667599] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:28:32,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914869031] [2023-12-02 16:28:32,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:28:32,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:28:32,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:28:32,486 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:28:32,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-12-02 16:28:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:28:32,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-02 16:28:32,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:28:33,476 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 19 treesize of output 1 [2023-12-02 16:28:33,627 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 18 treesize of output 13 [2023-12-02 16:28:33,825 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 18 treesize of output 13 [2023-12-02 16:28:34,038 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 18 treesize of output 13 [2023-12-02 16:28:34,109 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:28:34,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 22 [2023-12-02 16:28:34,174 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 251 proven. 12 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2023-12-02 16:28:34,175 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:28:34,278 WARN L854 $PredicateComparison]: unable to prove that (forall ((|~#unsigned_short_int_Array_0~0.offset| (_ BitVec 32)) (v_ArrVal_1626 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_1626))) (let ((.cse3 (select .cse2 |c_~#unsigned_short_int_Array_0~0.base|))) (let ((.cse0 ((_ zero_extend 16) ((_ extract 15 0) (select .cse3 (bvadd |~#unsigned_short_int_Array_0~0.offset| (_ bv2 32)))))) (.cse1 ((_ zero_extend 16) ((_ extract 15 0) (select .cse3 |~#unsigned_short_int_Array_0~0.offset|))))) (or (not (bvsle .cse0 .cse1)) (not (bvugt .cse0 (bvadd (select (select .cse2 |c_~#unsigned_long_int_Array_0~0.base|) (bvadd (_ bv4 32) |c_~#unsigned_long_int_Array_0~0.offset|)) .cse1)))))))) is different from false [2023-12-02 16:28:34,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914869031] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:28:34,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:28:34,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 10 [2023-12-02 16:28:34,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462919452] [2023-12-02 16:28:34,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:28:34,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 16:28:34,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:28:34,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 16:28:34,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=169, Unknown=4, NotChecked=84, Total=306 [2023-12-02 16:28:34,325 INFO L87 Difference]: Start difference. First operand 2772 states and 3762 transitions. Second operand has 11 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-02 16:28:37,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:28:37,638 INFO L93 Difference]: Finished difference Result 5418 states and 7301 transitions. [2023-12-02 16:28:37,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 16:28:37,639 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 146 [2023-12-02 16:28:37,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:28:37,649 INFO L225 Difference]: With dead ends: 5418 [2023-12-02 16:28:37,649 INFO L226 Difference]: Without dead ends: 2647 [2023-12-02 16:28:37,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 539 GetRequests, 513 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=116, Invalid=398, Unknown=4, NotChecked=132, Total=650 [2023-12-02 16:28:37,652 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 127 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:28:37,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 506 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-02 16:28:37,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2023-12-02 16:28:37,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 2578. [2023-12-02 16:28:37,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2578 states, 2331 states have (on average 1.3393393393393394) internal successors, (3122), 2362 states have internal predecessors, (3122), 170 states have call successors, (170), 76 states have call predecessors, (170), 76 states have return successors, (170), 139 states have call predecessors, (170), 170 states have call successors, (170) [2023-12-02 16:28:37,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2578 states to 2578 states and 3462 transitions. [2023-12-02 16:28:37,846 INFO L78 Accepts]: Start accepts. Automaton has 2578 states and 3462 transitions. Word has length 146 [2023-12-02 16:28:37,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:28:37,846 INFO L495 AbstractCegarLoop]: Abstraction has 2578 states and 3462 transitions. [2023-12-02 16:28:37,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2023-12-02 16:28:37,846 INFO L276 IsEmpty]: Start isEmpty. Operand 2578 states and 3462 transitions. [2023-12-02 16:28:37,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-02 16:28:37,849 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:28:37,849 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:28:37,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 (47)] Ended with exit code 0 [2023-12-02 16:28:38,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (48)] Ended with exit code 0 [2023-12-02 16:28:38,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2023-12-02 16:28:38,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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=3,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:28:38,450 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:28:38,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:28:38,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1548022065, now seen corresponding path program 1 times [2023-12-02 16:28:38,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:28:38,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1397391424] [2023-12-02 16:28:38,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:28:38,452 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:28:38,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:28:38,453 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:28:38,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 (50)] Waiting until timeout for monitored process [2023-12-02 16:28:39,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:28:39,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-02 16:28:39,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:28:40,099 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 19 treesize of output 1 [2023-12-02 16:28:40,434 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 22 treesize of output 21 [2023-12-02 16:28:40,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 37 treesize of output 24 [2023-12-02 16:28:41,228 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 26 treesize of output 24 [2023-12-02 16:28:41,613 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:28:41,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 43 [2023-12-02 16:28:41,818 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 52 treesize of output 44 [2023-12-02 16:28:42,017 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 52 treesize of output 44 [2023-12-02 16:28:42,338 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:28:42,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 36 [2023-12-02 16:28:42,433 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 251 proven. 12 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2023-12-02 16:28:42,433 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:28:42,751 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1662 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_int| |c_~#float_Array_0~0.base| v_ArrVal_1662))) (let ((.cse3 (select .cse2 |c_~#unsigned_short_int_Array_0~0.base|))) (let ((.cse0 ((_ zero_extend 16) ((_ extract 15 0) (select .cse3 (bvadd (_ bv2 32) |c_~#unsigned_short_int_Array_0~0.offset|))))) (.cse1 ((_ zero_extend 16) ((_ extract 15 0) (select .cse3 |c_~#unsigned_short_int_Array_0~0.offset|))))) (or (not (bvsle .cse0 .cse1)) (not (bvugt .cse0 (bvadd .cse1 (select (select .cse2 |c_~#unsigned_long_int_Array_0~0.base|) (bvadd (_ bv4 32) |c_~#unsigned_long_int_Array_0~0.offset|)))))))))) is different from false [2023-12-02 16:28:42,977 WARN L854 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_step_#t~ite23#1| (_ BitVec 32)) (v_ArrVal_1662 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store (store |c_#memory_int| |c_~#unsigned_long_int_Array_0~0.base| (let ((.cse4 (select |c_#memory_int| |c_~#unsigned_long_int_Array_0~0.base|))) (store .cse4 (bvadd |c_~#unsigned_long_int_Array_0~0.offset| (_ bv12 32)) (bvadd (select .cse4 (bvadd |c_~#unsigned_long_int_Array_0~0.offset| (_ bv8 32))) (bvneg (select .cse4 |c_~#unsigned_long_int_Array_0~0.offset|)) |ULTIMATE.start_step_#t~ite23#1|)))) |c_~#float_Array_0~0.base| v_ArrVal_1662))) (let ((.cse3 (select .cse1 |c_~#unsigned_short_int_Array_0~0.base|))) (let ((.cse0 ((_ zero_extend 16) ((_ extract 15 0) (select .cse3 (bvadd (_ bv2 32) |c_~#unsigned_short_int_Array_0~0.offset|))))) (.cse2 ((_ zero_extend 16) ((_ extract 15 0) (select .cse3 |c_~#unsigned_short_int_Array_0~0.offset|))))) (or (not (bvugt .cse0 (bvadd (select (select .cse1 |c_~#unsigned_long_int_Array_0~0.base|) (bvadd (_ bv4 32) |c_~#unsigned_long_int_Array_0~0.offset|)) .cse2))) (not (bvsle .cse0 .cse2))))))) is different from false [2023-12-02 16:28:43,835 WARN L854 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_step_#t~ite23#1| (_ BitVec 32)) (v_ArrVal_1662 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1659 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_1659))) (let ((.cse4 (select .cse6 |c_~#unsigned_long_int_Array_0~0.base|))) (let ((.cse7 (store (store .cse6 |c_~#unsigned_long_int_Array_0~0.base| (store .cse4 (bvadd |c_~#unsigned_long_int_Array_0~0.offset| (_ bv12 32)) (bvadd (bvneg (select .cse4 |c_~#unsigned_long_int_Array_0~0.offset|)) (select .cse4 (bvadd |c_~#unsigned_long_int_Array_0~0.offset| (_ bv8 32))) |ULTIMATE.start_step_#t~ite23#1|))) |c_~#float_Array_0~0.base| v_ArrVal_1662))) (let ((.cse8 (select .cse7 |c_~#unsigned_short_int_Array_0~0.base|)) (.cse3 (bvadd (_ bv2 32) |c_~#unsigned_short_int_Array_0~0.offset|))) (let ((.cse0 ((_ zero_extend 16) ((_ extract 15 0) (select .cse8 .cse3)))) (.cse5 (bvadd (_ bv4 32) |c_~#unsigned_long_int_Array_0~0.offset|)) (.cse1 ((_ zero_extend 16) ((_ extract 15 0) (select .cse8 |c_~#unsigned_short_int_Array_0~0.offset|))))) (or (not (bvsle .cse0 .cse1)) (let ((.cse2 (select .cse6 |c_~#unsigned_short_int_Array_0~0.base|))) (bvugt ((_ zero_extend 16) ((_ extract 15 0) (select .cse2 .cse3))) (bvadd ((_ zero_extend 16) ((_ extract 15 0) (select .cse2 |c_~#unsigned_short_int_Array_0~0.offset|))) (select .cse4 .cse5)))) (not (bvugt .cse0 (bvadd (select (select .cse7 |c_~#unsigned_long_int_Array_0~0.base|) .cse5) .cse1)))))))))) is different from false [2023-12-02 16:28:44,060 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:28:44,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1397391424] [2023-12-02 16:28:44,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1397391424] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:28:44,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1625036264] [2023-12-02 16:28:44,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:28:44,061 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:28:44,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:28:44,062 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:28:44,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (51)] Waiting until timeout for monitored process [2023-12-02 16:28:45,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:28:45,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-02 16:28:45,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:28:47,166 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 15 treesize of output 1 [2023-12-02 16:28:47,741 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 16 treesize of output 11 [2023-12-02 16:28:48,049 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 22 treesize of output 21 [2023-12-02 16:28:48,587 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 26 treesize of output 24 [2023-12-02 16:28:48,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 24 [2023-12-02 16:28:48,963 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 26 treesize of output 24 [2023-12-02 16:28:49,104 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 26 treesize of output 24 [2023-12-02 16:28:49,431 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:28:49,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 26 [2023-12-02 16:28:49,511 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 267 proven. 12 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2023-12-02 16:28:49,512 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:28:49,603 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1698 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_int| |c_~#float_Array_0~0.base| v_ArrVal_1698))) (let ((.cse3 (select .cse2 |c_~#unsigned_short_int_Array_0~0.base|))) (let ((.cse0 ((_ zero_extend 16) ((_ extract 15 0) (select .cse3 (bvadd (_ bv2 32) |c_~#unsigned_short_int_Array_0~0.offset|))))) (.cse1 ((_ zero_extend 16) ((_ extract 15 0) (select .cse3 |c_~#unsigned_short_int_Array_0~0.offset|))))) (or (not (bvsle .cse0 .cse1)) (not (bvugt .cse0 (bvadd (select (select .cse2 |c_~#unsigned_long_int_Array_0~0.base|) (bvadd (_ bv4 32) |c_~#unsigned_long_int_Array_0~0.offset|)) .cse1)))))))) is different from false [2023-12-02 16:28:49,823 WARN L854 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_step_#t~ite23#1| (_ BitVec 32)) (v_ArrVal_1698 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store (store |c_#memory_int| |c_~#unsigned_long_int_Array_0~0.base| (let ((.cse4 (select |c_#memory_int| |c_~#unsigned_long_int_Array_0~0.base|))) (store .cse4 (bvadd |c_~#unsigned_long_int_Array_0~0.offset| (_ bv12 32)) (bvadd (select .cse4 (bvadd |c_~#unsigned_long_int_Array_0~0.offset| (_ bv8 32))) (bvneg (select .cse4 |c_~#unsigned_long_int_Array_0~0.offset|)) |ULTIMATE.start_step_#t~ite23#1|)))) |c_~#float_Array_0~0.base| v_ArrVal_1698))) (let ((.cse3 (select .cse1 |c_~#unsigned_short_int_Array_0~0.base|))) (let ((.cse0 ((_ zero_extend 16) ((_ extract 15 0) (select .cse3 (bvadd (_ bv2 32) |c_~#unsigned_short_int_Array_0~0.offset|))))) (.cse2 ((_ zero_extend 16) ((_ extract 15 0) (select .cse3 |c_~#unsigned_short_int_Array_0~0.offset|))))) (or (not (bvugt .cse0 (bvadd (select (select .cse1 |c_~#unsigned_long_int_Array_0~0.base|) (bvadd (_ bv4 32) |c_~#unsigned_long_int_Array_0~0.offset|)) .cse2))) (not (bvsle .cse0 .cse2))))))) is different from false [2023-12-02 16:28:50,105 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1695 (Array (_ BitVec 32) (_ BitVec 32))) (|ULTIMATE.start_step_#t~ite23#1| (_ BitVec 32)) (v_ArrVal_1698 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store (let ((.cse4 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_1695))) (store .cse4 |c_~#unsigned_long_int_Array_0~0.base| (let ((.cse5 (select .cse4 |c_~#unsigned_long_int_Array_0~0.base|))) (store .cse5 (bvadd |c_~#unsigned_long_int_Array_0~0.offset| (_ bv12 32)) (bvadd (select .cse5 (bvadd |c_~#unsigned_long_int_Array_0~0.offset| (_ bv8 32))) (bvneg (select .cse5 |c_~#unsigned_long_int_Array_0~0.offset|)) |ULTIMATE.start_step_#t~ite23#1|))))) |c_~#float_Array_0~0.base| v_ArrVal_1698))) (let ((.cse3 (select .cse2 |c_~#unsigned_short_int_Array_0~0.base|))) (let ((.cse0 ((_ zero_extend 16) ((_ extract 15 0) (select .cse3 (bvadd (_ bv2 32) |c_~#unsigned_short_int_Array_0~0.offset|))))) (.cse1 ((_ zero_extend 16) ((_ extract 15 0) (select .cse3 |c_~#unsigned_short_int_Array_0~0.offset|))))) (or (not (bvugt .cse0 (bvadd .cse1 (select (select .cse2 |c_~#unsigned_long_int_Array_0~0.base|) (bvadd (_ bv4 32) |c_~#unsigned_long_int_Array_0~0.offset|))))) (not (bvsle .cse0 .cse1))))))) is different from false [2023-12-02 16:28:50,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1625036264] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:28:50,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547155201] [2023-12-02 16:28:50,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:28:50,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:28:50,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:28:50,186 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:28:50,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-12-02 16:28:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:28:50,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 16:28:50,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:28:52,274 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:28:52,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 43 [2023-12-02 16:28:52,466 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 52 treesize of output 44 [2023-12-02 16:28:52,670 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 52 treesize of output 44 [2023-12-02 16:28:53,137 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:28:53,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 29 [2023-12-02 16:28:53,481 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-12-02 16:28:53,482 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:28:53,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547155201] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:28:53,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 16:28:53,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 11] total 30 [2023-12-02 16:28:53,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358634212] [2023-12-02 16:28:53,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:28:53,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 16:28:53,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:28:53,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 16:28:53,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1086, Unknown=6, NotChecked=438, Total=1722 [2023-12-02 16:28:53,484 INFO L87 Difference]: Start difference. First operand 2578 states and 3462 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:28:58,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:28:58,818 INFO L93 Difference]: Finished difference Result 5063 states and 6828 transitions. [2023-12-02 16:28:58,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 16:28:58,819 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 146 [2023-12-02 16:28:58,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:28:58,833 INFO L225 Difference]: With dead ends: 5063 [2023-12-02 16:28:58,833 INFO L226 Difference]: Without dead ends: 2514 [2023-12-02 16:28:58,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 457 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=245, Invalid=1413, Unknown=6, NotChecked=498, Total=2162 [2023-12-02 16:28:58,838 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 250 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-12-02 16:28:58,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 517 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-02 16:28:58,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2023-12-02 16:28:59,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 2512. [2023-12-02 16:28:59,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2512 states, 2265 states have (on average 1.3298013245033113) internal successors, (3012), 2296 states have internal predecessors, (3012), 170 states have call successors, (170), 76 states have call predecessors, (170), 76 states have return successors, (170), 139 states have call predecessors, (170), 170 states have call successors, (170) [2023-12-02 16:28:59,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2512 states to 2512 states and 3352 transitions. [2023-12-02 16:28:59,040 INFO L78 Accepts]: Start accepts. Automaton has 2512 states and 3352 transitions. Word has length 146 [2023-12-02 16:28:59,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:28:59,040 INFO L495 AbstractCegarLoop]: Abstraction has 2512 states and 3352 transitions. [2023-12-02 16:28:59,041 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, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-02 16:28:59,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2512 states and 3352 transitions. [2023-12-02 16:28:59,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-02 16:28:59,043 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:28:59,043 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:28:59,051 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 (50)] Ended with exit code 0 [2023-12-02 16:28:59,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (51)] Ended with exit code 0 [2023-12-02 16:28:59,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2023-12-02 16:28:59,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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=3,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:28:59,645 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:28:59,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:28:59,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1289856627, now seen corresponding path program 1 times [2023-12-02 16:28:59,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 16:28:59,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188561224] [2023-12-02 16:28:59,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:28:59,646 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 16:28:59,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 16:28:59,647 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 16:28:59,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/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 (53)] Waiting until timeout for monitored process [2023-12-02 16:29:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:29:00,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-02 16:29:00,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:29:01,506 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 16:29:01,815 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 11 [2023-12-02 16:29:02,679 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:29:02,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 26 [2023-12-02 16:29:03,609 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:29:03,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 46 [2023-12-02 16:29:04,351 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:29:04,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 59 [2023-12-02 16:29:05,329 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 61 treesize of output 51 [2023-12-02 16:29:05,958 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:29:05,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 93 treesize of output 78 [2023-12-02 16:29:07,481 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 110 treesize of output 86 [2023-12-02 16:29:08,136 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 110 treesize of output 86 [2023-12-02 16:29:10,098 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 393 proven. 57 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-12-02 16:29:10,098 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:29:11,336 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1768 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_int| |c_~#float_Array_0~0.base| v_ArrVal_1768))) (let ((.cse0 (select .cse1 |c_~#unsigned_long_int_Array_0~0.base|))) (= (select .cse0 (bvadd |c_~#unsigned_long_int_Array_0~0.offset| (_ bv12 32))) (bvadd (bvneg (select .cse0 |c_~#unsigned_long_int_Array_0~0.offset|)) (select .cse0 (bvadd (_ bv4 32) |c_~#unsigned_long_int_Array_0~0.offset|)) (select .cse0 (bvadd |c_~#unsigned_long_int_Array_0~0.offset| (_ bv8 32))) ((_ zero_extend 16) ((_ extract 15 0) (select (select .cse1 |c_~#unsigned_short_int_Array_0~0.base|) |c_~#unsigned_short_int_Array_0~0.offset|)))))))) is different from false [2023-12-02 16:29:13,129 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1765 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1768 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_1765))) (let ((.cse8 (select .cse7 |c_~#unsigned_long_int_Array_0~0.base|))) (let ((.cse0 (select .cse8 |c_~#unsigned_long_int_Array_0~0.offset|)) (.cse4 (bvadd |c_~#unsigned_long_int_Array_0~0.offset| (_ bv8 32))) (.cse5 (bvadd (_ bv4 32) |c_~#unsigned_long_int_Array_0~0.offset|))) (let ((.cse1 (bvadd (bvneg .cse0) (select .cse8 .cse4) ((_ zero_extend 16) ((_ extract 15 0) (select (select .cse7 |c_~#unsigned_short_int_Array_0~0.base|) |c_~#unsigned_short_int_Array_0~0.offset|))) (select .cse8 .cse5)))) (or (not (bvuge .cse0 .cse1)) (let ((.cse3 (bvadd |c_~#unsigned_long_int_Array_0~0.offset| (_ bv12 32)))) (let ((.cse6 (store (store .cse7 |c_~#unsigned_long_int_Array_0~0.base| (store .cse8 .cse3 .cse1)) |c_~#float_Array_0~0.base| v_ArrVal_1768))) (let ((.cse2 (select .cse6 |c_~#unsigned_long_int_Array_0~0.base|))) (= (select .cse2 .cse3) (bvadd (bvneg (select .cse2 |c_~#unsigned_long_int_Array_0~0.offset|)) (select .cse2 .cse4) (select .cse2 .cse5) ((_ zero_extend 16) ((_ extract 15 0) (select (select .cse6 |c_~#unsigned_short_int_Array_0~0.base|) |c_~#unsigned_short_int_Array_0~0.offset|)))))))))))))) is different from false [2023-12-02 16:29:13,260 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 16:29:13,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1188561224] [2023-12-02 16:29:13,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1188561224] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:29:13,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [470499483] [2023-12-02 16:29:13,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:29:13,260 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 16:29:13,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 16:29:13,261 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 16:29:13,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (54)] Waiting until timeout for monitored process [2023-12-02 16:29:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:29:15,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 57 conjunts are in the unsatisfiable core [2023-12-02 16:29:15,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:29:16,738 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 15 treesize of output 1 [2023-12-02 16:29:17,764 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 23 treesize of output 11 [2023-12-02 16:29:20,016 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 37 treesize of output 24 [2023-12-02 16:29:21,561 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 37 treesize of output 26 [2023-12-02 16:29:22,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 44 [2023-12-02 16:29:23,139 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 47 treesize of output 39 [2023-12-02 16:29:24,098 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:29:24,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 68 [2023-12-02 16:29:33,836 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 138 treesize of output 104 [2023-12-02 16:29:34,815 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 138 treesize of output 104 [2023-12-02 16:29:39,023 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 393 proven. 57 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-12-02 16:29:39,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:29:39,113 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1809 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_int| |c_~#float_Array_0~0.base| v_ArrVal_1809))) (let ((.cse0 (select .cse1 |c_~#unsigned_long_int_Array_0~0.base|))) (= (select .cse0 (bvadd |c_~#unsigned_long_int_Array_0~0.offset| (_ bv12 32))) (bvadd ((_ zero_extend 16) ((_ extract 15 0) (select (select .cse1 |c_~#unsigned_short_int_Array_0~0.base|) |c_~#unsigned_short_int_Array_0~0.offset|))) (select .cse0 (bvadd |c_~#unsigned_long_int_Array_0~0.offset| (_ bv8 32))) (bvneg (select .cse0 |c_~#unsigned_long_int_Array_0~0.offset|)) (select .cse0 (bvadd (_ bv4 32) |c_~#unsigned_long_int_Array_0~0.offset|))))))) is different from false [2023-12-02 16:29:39,839 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1805 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1768 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_1805))) (let ((.cse6 (select .cse5 |c_~#unsigned_long_int_Array_0~0.base|))) (let ((.cse3 (bvadd |c_~#unsigned_long_int_Array_0~0.offset| (_ bv8 32))) (.cse8 (select .cse6 |c_~#unsigned_long_int_Array_0~0.offset|)) (.cse2 (bvadd (_ bv4 32) |c_~#unsigned_long_int_Array_0~0.offset|))) (let ((.cse7 (bvadd (select .cse6 .cse3) ((_ zero_extend 16) ((_ extract 15 0) (select (select .cse5 |c_~#unsigned_short_int_Array_0~0.base|) |c_~#unsigned_short_int_Array_0~0.offset|))) (bvneg .cse8) (select .cse6 .cse2)))) (or (let ((.cse4 (bvadd |c_~#unsigned_long_int_Array_0~0.offset| (_ bv12 32)))) (let ((.cse0 (store (store .cse5 |c_~#unsigned_long_int_Array_0~0.base| (store .cse6 .cse4 .cse7)) |c_~#float_Array_0~0.base| v_ArrVal_1768))) (let ((.cse1 (select .cse0 |c_~#unsigned_long_int_Array_0~0.base|))) (= (bvadd ((_ zero_extend 16) ((_ extract 15 0) (select (select .cse0 |c_~#unsigned_short_int_Array_0~0.base|) |c_~#unsigned_short_int_Array_0~0.offset|))) (bvneg (select .cse1 |c_~#unsigned_long_int_Array_0~0.offset|)) (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4))))) (not (bvuge .cse8 .cse7)))))))) is different from false [2023-12-02 16:29:39,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [470499483] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:29:39,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110746930] [2023-12-02 16:29:39,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:29:39,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:29:39,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:29:39,963 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:29:39,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c0cc785-eabc-40de-aaa4-6a0123611bd2/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-12-02 16:29:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:29:42,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 52 conjunts are in the unsatisfiable core [2023-12-02 16:29:42,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:29:43,844 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 11 [2023-12-02 16:29:44,243 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:29:44,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 26 [2023-12-02 16:29:44,729 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 43 treesize of output 32 [2023-12-02 16:29:45,304 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 43 treesize of output 32 [2023-12-02 16:29:45,926 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 43 treesize of output 32 [2023-12-02 16:29:52,893 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 16:29:52,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 75 treesize of output 61 [2023-12-02 16:30:12,691 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 146 treesize of output 114 [2023-12-02 16:30:13,589 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 146 treesize of output 114 [2023-12-02 16:30:28,162 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 383 proven. 72 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-12-02 16:30:28,163 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:30:28,267 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1847 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_int| |c_~#float_Array_0~0.base| v_ArrVal_1847))) (let ((.cse0 (select .cse1 |c_~#unsigned_long_int_Array_0~0.base|))) (= (bvadd (bvneg (select .cse0 |c_~#unsigned_long_int_Array_0~0.offset|)) ((_ zero_extend 16) ((_ extract 15 0) (select (select .cse1 |c_~#unsigned_short_int_Array_0~0.base|) |c_~#unsigned_short_int_Array_0~0.offset|))) (select .cse0 (bvadd (_ bv4 32) |c_~#unsigned_long_int_Array_0~0.offset|)) (select .cse0 (bvadd |c_~#unsigned_long_int_Array_0~0.offset| (_ bv8 32)))) (select .cse0 (bvadd |c_~#unsigned_long_int_Array_0~0.offset| (_ bv12 32))))))) is different from false [2023-12-02 16:30:34,658 WARN L854 $PredicateComparison]: unable to prove that (forall ((|~#unsigned_short_int_Array_0~0.offset| (_ BitVec 32)) (v_ArrVal_1768 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1844 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_1844))) (let ((.cse6 (select .cse5 |c_~#unsigned_long_int_Array_0~0.base|))) (let ((.cse8 (select .cse6 |c_~#unsigned_long_int_Array_0~0.offset|)) (.cse4 (bvadd (_ bv4 32) |c_~#unsigned_long_int_Array_0~0.offset|)) (.cse2 (bvadd |c_~#unsigned_long_int_Array_0~0.offset| (_ bv8 32)))) (let ((.cse7 (bvadd ((_ zero_extend 16) ((_ extract 15 0) (select (select .cse5 |c_~#unsigned_short_int_Array_0~0.base|) |~#unsigned_short_int_Array_0~0.offset|))) (bvneg .cse8) (select .cse6 .cse4) (select .cse6 .cse2)))) (or (let ((.cse1 (bvadd |c_~#unsigned_long_int_Array_0~0.offset| (_ bv12 32)))) (let ((.cse3 (store (store .cse5 |c_~#unsigned_long_int_Array_0~0.base| (store .cse6 .cse1 .cse7)) |c_~#float_Array_0~0.base| v_ArrVal_1768))) (let ((.cse0 (select .cse3 |c_~#unsigned_long_int_Array_0~0.base|))) (= (select .cse0 .cse1) (bvadd (bvneg (select .cse0 |c_~#unsigned_long_int_Array_0~0.offset|)) (select .cse0 .cse2) ((_ zero_extend 16) ((_ extract 15 0) (select (select .cse3 |c_~#unsigned_short_int_Array_0~0.base|) |~#unsigned_short_int_Array_0~0.offset|))) (select .cse0 .cse4)))))) (not (bvuge .cse8 .cse7)))))))) is different from false [2023-12-02 16:30:34,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110746930] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 16:30:34,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 16:30:34,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 29] total 65 [2023-12-02 16:30:34,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645718797] [2023-12-02 16:30:34,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 16:30:34,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-02 16:30:34,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 16:30:34,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-02 16:30:34,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=547, Invalid=5142, Unknown=35, NotChecked=918, Total=6642 [2023-12-02 16:30:34,817 INFO L87 Difference]: Start difference. First operand 2512 states and 3352 transitions. Second operand has 66 states, 58 states have (on average 3.0689655172413794) internal successors, (178), 61 states have internal predecessors, (178), 17 states have call successors, (40), 13 states have call predecessors, (40), 17 states have return successors, (41), 13 states have call predecessors, (41), 17 states have call successors, (41) [2023-12-02 16:31:03,332 WARN L293 SmtUtils]: Spent 8.30s on a formula simplification. DAG size of input: 74 DAG size of output: 60 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:31:13,297 WARN L293 SmtUtils]: Spent 8.44s on a formula simplification. DAG size of input: 80 DAG size of output: 64 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:31:22,961 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 16:31:25,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:31:27,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:31:35,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:31:37,894 WARN L539 Checker$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 16:31:40,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:31:42,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:31:44,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:31:46,762 WARN L539 Checker$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 16:31:49,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:31:51,970 WARN L539 Checker$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 16:31:54,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:31:56,040 WARN L539 Checker$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 16:31:58,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:32:00,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:32:02,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:32:04,892 WARN L539 Checker$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 16:32:07,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:32:09,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:32:11,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:32:13,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:32:15,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:32:17,223 WARN L539 Checker$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 16:32:19,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:32:21,325 WARN L539 Checker$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 16:32:23,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:32:25,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:32:27,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:32:29,064 WARN L539 Checker$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 16:32:30,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:32:32,999 WARN L539 Checker$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 16:32:35,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:32:37,117 WARN L539 Checker$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 16:32:39,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:32:41,206 WARN L539 Checker$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 16:32:59,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:33:01,912 WARN L539 Checker$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 16:33:03,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:33:06,036 WARN L539 Checker$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 16:33:07,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result VALID. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:33:09,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:33:11,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:33:13,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:33:15,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:33:17,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:33:19,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:33:21,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:33:23,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:33:25,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:33:27,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:33:30,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:33:32,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:33:34,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:33:36,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:33:38,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:33:40,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:33:42,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:33:44,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:33:51,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:33:53,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:33:56,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:33:58,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:34:00,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:34:02,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:34:04,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:34:06,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:34:08,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:34:10,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:34:40,364 WARN L293 SmtUtils]: Spent 6.91s on a formula simplification. DAG size of input: 88 DAG size of output: 88 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:34:42,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:34:44,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:34:46,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:34:48,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:34:50,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:34:52,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:34:54,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:34:56,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:34:58,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:35:00,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:35:02,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:35:04,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:35:42,858 WARN L293 SmtUtils]: Spent 8.33s on a formula simplification. DAG size of input: 91 DAG size of output: 91 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:35:44,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:35:46,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:35:49,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:35:51,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:35:53,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:35:55,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:35:57,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:35:59,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:36:01,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:36:03,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:36:05,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:36:07,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:36:47,833 WARN L293 SmtUtils]: Spent 8.78s on a formula simplification. DAG size of input: 93 DAG size of output: 96 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 16:36:49,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:36:51,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:36:54,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:36:56,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:36:58,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:37:00,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:37:02,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:37:04,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:37:06,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:37:08,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:37:10,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 16:37:12,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]