./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-34.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-34.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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_0135d73e-7f44-436f-927b-d8ce750574ac/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 13746df1a3970e1622f02d2f93a14bca6db6fbfac535cca3dbaecdc2ea14baae --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:05:54,059 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:05:54,135 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 17:05:54,140 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:05:54,141 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:05:54,167 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:05:54,168 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:05:54,169 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:05:54,169 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:05:54,170 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:05:54,171 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:05:54,171 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:05:54,172 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:05:54,173 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:05:54,173 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:05:54,174 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:05:54,174 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:05:54,175 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:05:54,176 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:05:54,176 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:05:54,177 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:05:54,178 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:05:54,179 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:05:54,179 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:05:54,180 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:05:54,180 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:05:54,181 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:05:54,182 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:05:54,182 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:05:54,183 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:05:54,183 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:05:54,183 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:05:54,184 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:05:54,184 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:05:54,184 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:05:54,185 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:05:54,185 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:05:54,185 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:05:54,185 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:05:54,186 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:05:54,186 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:05:54,186 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:05:54,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:05:54,187 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:05:54,187 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:05:54,187 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:05:54,187 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:05:54,187 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_0135d73e-7f44-436f-927b-d8ce750574ac/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13746df1a3970e1622f02d2f93a14bca6db6fbfac535cca3dbaecdc2ea14baae [2023-12-02 17:05:54,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:05:54,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:05:54,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:05:54,461 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:05:54,461 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:05:54,463 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-34.i [2023-12-02 17:05:57,597 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:05:57,833 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:05:57,834 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-34.i [2023-12-02 17:05:57,845 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/data/ebc10f92a/3552cfa2c66b41f7b6b5b80af4aecb69/FLAG58d8a32d8 [2023-12-02 17:05:57,864 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/data/ebc10f92a/3552cfa2c66b41f7b6b5b80af4aecb69 [2023-12-02 17:05:57,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:05:57,869 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:05:57,871 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:05:57,871 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:05:57,877 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:05:57,878 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:05:57" (1/1) ... [2023-12-02 17:05:57,880 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34bf7fd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:05:57, skipping insertion in model container [2023-12-02 17:05:57,880 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:05:57" (1/1) ... [2023-12-02 17:05:57,916 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:05:58,086 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_0135d73e-7f44-436f-927b-d8ce750574ac/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-34.i[916,929] [2023-12-02 17:05:58,155 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:05:58,168 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:05:58,181 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_0135d73e-7f44-436f-927b-d8ce750574ac/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-34.i[916,929] [2023-12-02 17:05:58,219 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:05:58,243 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:05:58,244 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:05:58 WrapperNode [2023-12-02 17:05:58,244 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:05:58,246 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:05:58,246 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:05:58,246 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:05:58,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:05:58" (1/1) ... [2023-12-02 17:05:58,272 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:05:58" (1/1) ... [2023-12-02 17:05:58,322 INFO L138 Inliner]: procedures = 29, calls = 153, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 397 [2023-12-02 17:05:58,323 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:05:58,324 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:05:58,324 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:05:58,324 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:05:58,335 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:05:58" (1/1) ... [2023-12-02 17:05:58,336 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:05:58" (1/1) ... [2023-12-02 17:05:58,344 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:05:58" (1/1) ... [2023-12-02 17:05:58,344 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:05:58" (1/1) ... [2023-12-02 17:05:58,365 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:05:58" (1/1) ... [2023-12-02 17:05:58,369 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:05:58" (1/1) ... [2023-12-02 17:05:58,373 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:05:58" (1/1) ... [2023-12-02 17:05:58,376 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:05:58" (1/1) ... [2023-12-02 17:05:58,383 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:05:58,384 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:05:58,385 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:05:58,385 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:05:58,386 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:05:58" (1/1) ... [2023-12-02 17:05:58,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:05:58,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:05:58,424 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:05:58,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:05:58,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:05:58,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 17:05:58,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-12-02 17:05:58,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-12-02 17:05:58,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 17:05:58,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-12-02 17:05:58,473 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 17:05:58,473 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 17:05:58,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 17:05:58,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:05:58,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:05:58,606 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:05:58,609 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:05:59,094 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:05:59,682 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:05:59,682 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 17:05:59,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:05:59 BoogieIcfgContainer [2023-12-02 17:05:59,685 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:05:59,688 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:05:59,688 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:05:59,692 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:05:59,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:05:57" (1/3) ... [2023-12-02 17:05:59,693 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b35d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:05:59, skipping insertion in model container [2023-12-02 17:05:59,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:05:58" (2/3) ... [2023-12-02 17:05:59,694 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b35d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:05:59, skipping insertion in model container [2023-12-02 17:05:59,694 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:05:59" (3/3) ... [2023-12-02 17:05:59,695 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-34.i [2023-12-02 17:05:59,719 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:05:59,720 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 17:05:59,780 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:05:59,789 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;@572f3bca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:05:59,789 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 17:05:59,795 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 29 states have (on average 1.103448275862069) internal successors, (32), 30 states have internal predecessors, (32), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-02 17:05:59,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-02 17:05:59,810 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:05:59,811 INFO L195 NwaCegarLoop]: trace histogram [23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:05:59,811 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:05:59,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:05:59,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1755896473, now seen corresponding path program 1 times [2023-12-02 17:05:59,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:05:59,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834803534] [2023-12-02 17:05:59,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:05:59,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:06:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 17:06:01,374 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 17:06:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 17:06:02,477 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 17:06:02,479 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 17:06:02,481 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 17:06:02,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 17:06:02,488 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 17:06:02,493 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 17:06:02,547 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem34 could not be translated [2023-12-02 17:06:02,549 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem34 could not be translated [2023-12-02 17:06:02,549 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem35 could not be translated [2023-12-02 17:06:02,550 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem35 could not be translated [2023-12-02 17:06:02,550 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem37 could not be translated [2023-12-02 17:06:02,551 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem37 could not be translated [2023-12-02 17:06:02,552 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem38 could not be translated [2023-12-02 17:06:02,552 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem38 could not be translated [2023-12-02 17:06:02,553 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem40 could not be translated [2023-12-02 17:06:02,553 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem40 could not be translated [2023-12-02 17:06:02,554 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem41 could not be translated [2023-12-02 17:06:02,554 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem41 could not be translated [2023-12-02 17:06:02,555 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem43 could not be translated [2023-12-02 17:06:02,556 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem43 could not be translated [2023-12-02 17:06:02,556 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem44 could not be translated [2023-12-02 17:06:02,557 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem44 could not be translated [2023-12-02 17:06:02,557 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem46 could not be translated [2023-12-02 17:06:02,558 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem46 could not be translated [2023-12-02 17:06:02,558 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem47 could not be translated [2023-12-02 17:06:02,559 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem47 could not be translated [2023-12-02 17:06:02,559 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem49 could not be translated [2023-12-02 17:06:02,560 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem50 could not be translated [2023-12-02 17:06:02,560 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short54 could not be translated [2023-12-02 17:06:02,560 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short51 could not be translated [2023-12-02 17:06:02,560 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem53 could not be translated [2023-12-02 17:06:02,561 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem52 could not be translated [2023-12-02 17:06:02,561 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short55 could not be translated [2023-12-02 17:06:02,561 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem50 could not be translated [2023-12-02 17:06:02,561 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem53 could not be translated [2023-12-02 17:06:02,562 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short54 could not be translated [2023-12-02 17:06:02,562 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short51 could not be translated [2023-12-02 17:06:02,562 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short55 could not be translated [2023-12-02 17:06:02,562 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem52 could not be translated [2023-12-02 17:06:02,563 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem49 could not be translated [2023-12-02 17:06:02,563 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem57 could not be translated [2023-12-02 17:06:02,564 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem57 could not be translated [2023-12-02 17:06:02,564 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem58 could not be translated [2023-12-02 17:06:02,565 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem58 could not be translated [2023-12-02 17:06:02,565 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem60 could not be translated [2023-12-02 17:06:02,566 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem60 could not be translated [2023-12-02 17:06:02,566 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem61 could not be translated [2023-12-02 17:06:02,567 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem61 could not be translated [2023-12-02 17:06:02,568 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem63 could not be translated [2023-12-02 17:06:02,568 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem63 could not be translated [2023-12-02 17:06:02,569 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem64 could not be translated [2023-12-02 17:06:02,569 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem64 could not be translated [2023-12-02 17:06:02,570 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem66 could not be translated [2023-12-02 17:06:02,571 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem66 could not be translated [2023-12-02 17:06:02,571 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem67 could not be translated [2023-12-02 17:06:02,572 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem67 could not be translated [2023-12-02 17:06:02,572 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem69 could not be translated [2023-12-02 17:06:02,573 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem69 could not be translated [2023-12-02 17:06:02,573 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem70 could not be translated [2023-12-02 17:06:02,574 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem70 could not be translated [2023-12-02 17:06:02,574 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem72 could not be translated [2023-12-02 17:06:02,575 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem72 could not be translated [2023-12-02 17:06:02,575 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem73 could not be translated [2023-12-02 17:06:02,576 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem73 could not be translated [2023-12-02 17:06:02,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 05:06:02 BoogieIcfgContainer [2023-12-02 17:06:02,603 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 17:06:02,604 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 17:06:02,604 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 17:06:02,604 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 17:06:02,605 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:05:59" (3/4) ... [2023-12-02 17:06:02,608 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 17:06:02,609 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 17:06:02,611 INFO L158 Benchmark]: Toolchain (without parser) took 4741.63ms. Allocated memory was 197.1MB in the beginning and 239.1MB in the end (delta: 41.9MB). Free memory was 168.1MB in the beginning and 101.2MB in the end (delta: 66.9MB). Peak memory consumption was 110.6MB. Max. memory is 16.1GB. [2023-12-02 17:06:02,611 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 100.7MB. Free memory is still 48.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:06:02,612 INFO L158 Benchmark]: CACSL2BoogieTranslator took 373.99ms. Allocated memory is still 197.1MB. Free memory was 167.8MB in the beginning and 153.5MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 17:06:02,613 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.28ms. Allocated memory is still 197.1MB. Free memory was 153.1MB in the beginning and 149.3MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 17:06:02,614 INFO L158 Benchmark]: Boogie Preprocessor took 59.83ms. Allocated memory is still 197.1MB. Free memory was 149.3MB in the beginning and 146.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 17:06:02,615 INFO L158 Benchmark]: RCFGBuilder took 1300.30ms. Allocated memory is still 197.1MB. Free memory was 146.2MB in the beginning and 97.8MB in the end (delta: 48.4MB). Peak memory consumption was 46.9MB. Max. memory is 16.1GB. [2023-12-02 17:06:02,615 INFO L158 Benchmark]: TraceAbstraction took 2915.62ms. Allocated memory was 197.1MB in the beginning and 239.1MB in the end (delta: 41.9MB). Free memory was 96.8MB in the beginning and 101.2MB in the end (delta: -4.4MB). Peak memory consumption was 78.4MB. Max. memory is 16.1GB. [2023-12-02 17:06:02,616 INFO L158 Benchmark]: Witness Printer took 5.37ms. Allocated memory is still 239.1MB. Free memory is still 101.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:06:02,620 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 100.7MB. Free memory is still 48.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 373.99ms. Allocated memory is still 197.1MB. Free memory was 167.8MB in the beginning and 153.5MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.28ms. Allocated memory is still 197.1MB. Free memory was 153.1MB in the beginning and 149.3MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.83ms. Allocated memory is still 197.1MB. Free memory was 149.3MB in the beginning and 146.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1300.30ms. Allocated memory is still 197.1MB. Free memory was 146.2MB in the beginning and 97.8MB in the end (delta: 48.4MB). Peak memory consumption was 46.9MB. Max. memory is 16.1GB. * TraceAbstraction took 2915.62ms. Allocated memory was 197.1MB in the beginning and 239.1MB in the end (delta: 41.9MB). Free memory was 96.8MB in the beginning and 101.2MB in the end (delta: -4.4MB). Peak memory consumption was 78.4MB. Max. memory is 16.1GB. * Witness Printer took 5.37ms. Allocated memory is still 239.1MB. Free memory is still 101.2MB. 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~mem34 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem34 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem35 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem35 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem37 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem37 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem38 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem38 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem40 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem40 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem41 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem41 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem43 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem43 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem44 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem44 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem46 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem46 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem47 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem47 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem49 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem50 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short54 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short51 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem53 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem52 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short55 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem50 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem53 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short54 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short51 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short55 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem52 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem49 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem57 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem57 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~mem60 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem60 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem61 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem61 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem63 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem63 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem64 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem64 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem66 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem66 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem67 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem67 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem69 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~mem70 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem72 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem72 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem73 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem73 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 40, overapproximation of someUnaryDOUBLEoperation at line 40. Possible FailurePath: [L21] unsigned char isInitial = 0; [L22-L24] unsigned char BOOL_unsigned_char_Array_0[2][3] = { {0, 1, 1}, {0, 0, 1} }; [L25-L27] double double_Array_0[2] = { 10.6, 16.6 }; [L28-L30] signed char signed_char_Array_0[5] = { 10, 4, 64, -4, 32 }; [L31-L33] unsigned char unsigned_char_Array_0[3] = { 64, 100, 100 }; [L34] unsigned char last_1_BOOL_unsigned_char_Array_0_1__1_ = 0; [L106] isInitial = 1 [L107] FCALL initially() [L108] COND TRUE 1 [L109] CALL updateLastVariables() [L99] EXPR BOOL_unsigned_char_Array_0[1][1] [L99] last_1_BOOL_unsigned_char_Array_0_1__1_ = BOOL_unsigned_char_Array_0[1][1] [L109] RET updateLastVariables() [L110] CALL updateVariables() [L62] BOOL_unsigned_char_Array_0[0][0] = __VERIFIER_nondet_uchar() [L63] EXPR BOOL_unsigned_char_Array_0[0][0] VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L63] CALL assume_abort_if_not(BOOL_unsigned_char_Array_0[0][0] >= 0) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L20] COND FALSE !(!cond) [L63] RET assume_abort_if_not(BOOL_unsigned_char_Array_0[0][0] >= 0) VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L64] EXPR BOOL_unsigned_char_Array_0[0][0] VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L64] CALL assume_abort_if_not(BOOL_unsigned_char_Array_0[0][0] <= 0) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L20] COND FALSE !(!cond) [L64] RET assume_abort_if_not(BOOL_unsigned_char_Array_0[0][0] <= 0) VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L65] BOOL_unsigned_char_Array_0[1][0] = __VERIFIER_nondet_uchar() [L66] EXPR BOOL_unsigned_char_Array_0[1][0] VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L66] CALL assume_abort_if_not(BOOL_unsigned_char_Array_0[1][0] >= 0) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L20] COND FALSE !(!cond) [L66] RET assume_abort_if_not(BOOL_unsigned_char_Array_0[1][0] >= 0) VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L67] EXPR BOOL_unsigned_char_Array_0[1][0] VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L67] CALL assume_abort_if_not(BOOL_unsigned_char_Array_0[1][0] <= 0) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L20] COND FALSE !(!cond) [L67] RET assume_abort_if_not(BOOL_unsigned_char_Array_0[1][0] <= 0) VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L68] BOOL_unsigned_char_Array_0[0][1] = __VERIFIER_nondet_uchar() [L69] EXPR BOOL_unsigned_char_Array_0[0][1] VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L69] CALL assume_abort_if_not(BOOL_unsigned_char_Array_0[0][1] >= 1) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L20] COND FALSE !(!cond) [L69] RET assume_abort_if_not(BOOL_unsigned_char_Array_0[0][1] >= 1) VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L70] EXPR BOOL_unsigned_char_Array_0[0][1] VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L70] CALL assume_abort_if_not(BOOL_unsigned_char_Array_0[0][1] <= 1) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L20] COND FALSE !(!cond) [L70] RET assume_abort_if_not(BOOL_unsigned_char_Array_0[0][1] <= 1) VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L71] BOOL_unsigned_char_Array_0[0][2] = __VERIFIER_nondet_uchar() [L72] EXPR BOOL_unsigned_char_Array_0[0][2] VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L72] CALL assume_abort_if_not(BOOL_unsigned_char_Array_0[0][2] >= 0) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L20] COND FALSE !(!cond) [L72] RET assume_abort_if_not(BOOL_unsigned_char_Array_0[0][2] >= 0) VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L73] EXPR BOOL_unsigned_char_Array_0[0][2] VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L73] CALL assume_abort_if_not(BOOL_unsigned_char_Array_0[0][2] <= 1) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L20] COND FALSE !(!cond) [L73] RET assume_abort_if_not(BOOL_unsigned_char_Array_0[0][2] <= 1) VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L74] BOOL_unsigned_char_Array_0[1][2] = __VERIFIER_nondet_uchar() [L75] EXPR BOOL_unsigned_char_Array_0[1][2] VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L75] CALL assume_abort_if_not(BOOL_unsigned_char_Array_0[1][2] >= 0) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L20] COND FALSE !(!cond) [L75] RET assume_abort_if_not(BOOL_unsigned_char_Array_0[1][2] >= 0) VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L76] EXPR BOOL_unsigned_char_Array_0[1][2] VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L76] CALL assume_abort_if_not(BOOL_unsigned_char_Array_0[1][2] <= 1) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L20] COND FALSE !(!cond) [L76] RET assume_abort_if_not(BOOL_unsigned_char_Array_0[1][2] <= 1) VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L77] double_Array_0[0] = __VERIFIER_nondet_double() [L78] EXPR double_Array_0[0] [L78] EXPR double_Array_0[0] >= -922337.2036854765600e+13F && double_Array_0[0] <= -1.0e-20F [L78] EXPR (double_Array_0[0] >= -922337.2036854765600e+13F && double_Array_0[0] <= -1.0e-20F) || (double_Array_0[0] <= 9223372.036854765600e+12F && double_Array_0[0] >= 1.0e-20F ) [L78] EXPR double_Array_0[0] [L78] EXPR double_Array_0[0] <= 9223372.036854765600e+12F && double_Array_0[0] >= 1.0e-20F [L78] EXPR double_Array_0[0] [L78] EXPR double_Array_0[0] <= 9223372.036854765600e+12F && double_Array_0[0] >= 1.0e-20F [L78] EXPR (double_Array_0[0] >= -922337.2036854765600e+13F && double_Array_0[0] <= -1.0e-20F) || (double_Array_0[0] <= 9223372.036854765600e+12F && double_Array_0[0] >= 1.0e-20F ) VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L78] CALL assume_abort_if_not((double_Array_0[0] >= -922337.2036854765600e+13F && double_Array_0[0] <= -1.0e-20F) || (double_Array_0[0] <= 9223372.036854765600e+12F && double_Array_0[0] >= 1.0e-20F )) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L20] COND FALSE !(!cond) [L78] RET assume_abort_if_not((double_Array_0[0] >= -922337.2036854765600e+13F && double_Array_0[0] <= -1.0e-20F) || (double_Array_0[0] <= 9223372.036854765600e+12F && double_Array_0[0] >= 1.0e-20F )) VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L79] signed_char_Array_0[1] = __VERIFIER_nondet_char() [L80] EXPR signed_char_Array_0[1] VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L80] CALL assume_abort_if_not(signed_char_Array_0[1] >= -127) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L20] COND FALSE !(!cond) [L80] RET assume_abort_if_not(signed_char_Array_0[1] >= -127) VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L81] EXPR signed_char_Array_0[1] VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L81] CALL assume_abort_if_not(signed_char_Array_0[1] <= 126) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L20] COND FALSE !(!cond) [L81] RET assume_abort_if_not(signed_char_Array_0[1] <= 126) VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L82] signed_char_Array_0[3] = __VERIFIER_nondet_char() [L83] EXPR signed_char_Array_0[3] VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L83] CALL assume_abort_if_not(signed_char_Array_0[3] >= -63) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L20] COND FALSE !(!cond) [L83] RET assume_abort_if_not(signed_char_Array_0[3] >= -63) VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L84] EXPR signed_char_Array_0[3] VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L84] CALL assume_abort_if_not(signed_char_Array_0[3] <= 63) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L20] COND FALSE !(!cond) [L84] RET assume_abort_if_not(signed_char_Array_0[3] <= 63) VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L85] signed_char_Array_0[4] = __VERIFIER_nondet_char() [L86] EXPR signed_char_Array_0[4] VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L86] CALL assume_abort_if_not(signed_char_Array_0[4] >= -63) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L20] COND FALSE !(!cond) [L86] RET assume_abort_if_not(signed_char_Array_0[4] >= -63) VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L87] EXPR signed_char_Array_0[4] VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L87] CALL assume_abort_if_not(signed_char_Array_0[4] <= 63) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L20] COND FALSE !(!cond) [L87] RET assume_abort_if_not(signed_char_Array_0[4] <= 63) VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L88] unsigned_char_Array_0[0] = __VERIFIER_nondet_uchar() [L89] EXPR unsigned_char_Array_0[0] VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L89] CALL assume_abort_if_not(unsigned_char_Array_0[0] >= 64) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L20] COND FALSE !(!cond) [L89] RET assume_abort_if_not(unsigned_char_Array_0[0] >= 64) VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L90] EXPR unsigned_char_Array_0[0] VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L90] CALL assume_abort_if_not(unsigned_char_Array_0[0] <= 127) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L20] COND FALSE !(!cond) [L90] RET assume_abort_if_not(unsigned_char_Array_0[0] <= 127) VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L91] unsigned_char_Array_0[1] = __VERIFIER_nondet_uchar() [L92] EXPR unsigned_char_Array_0[1] VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L92] CALL assume_abort_if_not(unsigned_char_Array_0[1] >= 0) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L20] COND FALSE !(!cond) [L92] RET assume_abort_if_not(unsigned_char_Array_0[1] >= 0) VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L93] EXPR unsigned_char_Array_0[1] VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L93] CALL assume_abort_if_not(unsigned_char_Array_0[1] <= 127) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L20] COND FALSE !(!cond) [L93] RET assume_abort_if_not(unsigned_char_Array_0[1] <= 127) VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L94] unsigned_char_Array_0[2] = __VERIFIER_nondet_uchar() [L95] EXPR unsigned_char_Array_0[2] VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L95] CALL assume_abort_if_not(unsigned_char_Array_0[2] >= 63) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L20] COND FALSE !(!cond) [L95] RET assume_abort_if_not(unsigned_char_Array_0[2] >= 63) VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L96] EXPR unsigned_char_Array_0[2] VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L96] CALL assume_abort_if_not(unsigned_char_Array_0[2] <= 128) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=1, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L20] COND FALSE !(!cond) [L96] RET assume_abort_if_not(unsigned_char_Array_0[2] <= 128) VAL [BOOL_unsigned_char_Array_0={4:0}, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L110] RET updateVariables() [L111] CALL step() [L38] COND FALSE !(\read(last_1_BOOL_unsigned_char_Array_0_1__1_)) [L43] EXPR double_Array_0[1] [L43] EXPR double_Array_0[0] [L43] EXPR double_Array_0[1] [L43] COND FALSE !(double_Array_0[1] >= (- (double_Array_0[0] * double_Array_0[1]))) [L46] EXPR BOOL_unsigned_char_Array_0[0][2] [L46] BOOL_unsigned_char_Array_0[0][2] || (256 >= (signed_char_Array_0[2] + 4)) [L46] EXPR signed_char_Array_0[2] [L46] BOOL_unsigned_char_Array_0[0][2] || (256 >= (signed_char_Array_0[2] + 4)) [L46] COND TRUE BOOL_unsigned_char_Array_0[0][2] || (256 >= (signed_char_Array_0[2] + 4)) [L47] EXPR BOOL_unsigned_char_Array_0[1][2] [L47] EXPR BOOL_unsigned_char_Array_0[1][2] || BOOL_unsigned_char_Array_0[0][2] [L47] EXPR BOOL_unsigned_char_Array_0[0][2] [L47] EXPR BOOL_unsigned_char_Array_0[1][2] || BOOL_unsigned_char_Array_0[0][2] [L47] EXPR (BOOL_unsigned_char_Array_0[1][2] || BOOL_unsigned_char_Array_0[0][2]) || BOOL_unsigned_char_Array_0[0][1] [L47] EXPR BOOL_unsigned_char_Array_0[0][1] [L47] EXPR (BOOL_unsigned_char_Array_0[1][2] || BOOL_unsigned_char_Array_0[0][2]) || BOOL_unsigned_char_Array_0[0][1] [L47] BOOL_unsigned_char_Array_0[1][1] = ((BOOL_unsigned_char_Array_0[1][2] || BOOL_unsigned_char_Array_0[0][2]) || BOOL_unsigned_char_Array_0[0][1]) [L51] EXPR unsigned_char_Array_0[2] [L51] EXPR unsigned_char_Array_0[0] [L51] EXPR unsigned_char_Array_0[1] [L51] EXPR ((unsigned_char_Array_0[1]) < (1)) ? (unsigned_char_Array_0[1]) : (1) [L51] EXPR unsigned_char_Array_0[1] [L51] EXPR ((unsigned_char_Array_0[1]) < (1)) ? (unsigned_char_Array_0[1]) : (1) [L51] signed long int stepLocal_1 = (unsigned_char_Array_0[2] + unsigned_char_Array_0[0]) - ((((unsigned_char_Array_0[1]) < (1)) ? (unsigned_char_Array_0[1]) : (1))); [L52] EXPR signed_char_Array_0[2] [L52] signed char stepLocal_0 = signed_char_Array_0[2]; [L53] COND FALSE !(-10 >= stepLocal_0) [L111] RET step() [L112] CALL, EXPR property() [L102] EXPR last_1_BOOL_unsigned_char_Array_0_1__1_ ? (last_1_BOOL_unsigned_char_Array_0_1__1_ ? (double_Array_0[1] == ((double) ((((double_Array_0[0]) < 0 ) ? -(double_Array_0[0]) : (double_Array_0[0]))))) : 1) : 1 [L102] EXPR (last_1_BOOL_unsigned_char_Array_0_1__1_ ? (last_1_BOOL_unsigned_char_Array_0_1__1_ ? (double_Array_0[1] == ((double) ((((double_Array_0[0]) < 0 ) ? -(double_Array_0[0]) : (double_Array_0[0]))))) : 1) : 1) && ((BOOL_unsigned_char_Array_0[0][2] || (256 >= (signed_char_Array_0[2] + 4))) ? (BOOL_unsigned_char_Array_0[1][1] == ((unsigned char) ((BOOL_unsigned_char_Array_0[1][2] || BOOL_unsigned_char_Array_0[0][2]) || BOOL_unsigned_char_Array_0[0][1]))) : (BOOL_unsigned_char_Array_0[1][1] == ((unsigned char) (! (! (BOOL_unsigned_char_Array_0[1][0] || BOOL_unsigned_char_Array_0[0][0])))))) [L102] EXPR BOOL_unsigned_char_Array_0[0][2] [L102] EXPR BOOL_unsigned_char_Array_0[0][2] || (256 >= (signed_char_Array_0[2] + 4)) [L102] EXPR signed_char_Array_0[2] [L102] EXPR BOOL_unsigned_char_Array_0[0][2] || (256 >= (signed_char_Array_0[2] + 4)) [L102] EXPR (BOOL_unsigned_char_Array_0[0][2] || (256 >= (signed_char_Array_0[2] + 4))) ? (BOOL_unsigned_char_Array_0[1][1] == ((unsigned char) ((BOOL_unsigned_char_Array_0[1][2] || BOOL_unsigned_char_Array_0[0][2]) || BOOL_unsigned_char_Array_0[0][1]))) : (BOOL_unsigned_char_Array_0[1][1] == ((unsigned char) (! (! (BOOL_unsigned_char_Array_0[1][0] || BOOL_unsigned_char_Array_0[0][0]))))) [L102] EXPR BOOL_unsigned_char_Array_0[1][1] [L102] EXPR BOOL_unsigned_char_Array_0[1][2] [L102] EXPR BOOL_unsigned_char_Array_0[1][2] || BOOL_unsigned_char_Array_0[0][2] [L102] EXPR BOOL_unsigned_char_Array_0[0][2] [L102] EXPR BOOL_unsigned_char_Array_0[1][2] || BOOL_unsigned_char_Array_0[0][2] [L102] EXPR (BOOL_unsigned_char_Array_0[1][2] || BOOL_unsigned_char_Array_0[0][2]) || BOOL_unsigned_char_Array_0[0][1] [L102] EXPR BOOL_unsigned_char_Array_0[0][1] [L102] EXPR (BOOL_unsigned_char_Array_0[1][2] || BOOL_unsigned_char_Array_0[0][2]) || BOOL_unsigned_char_Array_0[0][1] [L102] EXPR (BOOL_unsigned_char_Array_0[0][2] || (256 >= (signed_char_Array_0[2] + 4))) ? (BOOL_unsigned_char_Array_0[1][1] == ((unsigned char) ((BOOL_unsigned_char_Array_0[1][2] || BOOL_unsigned_char_Array_0[0][2]) || BOOL_unsigned_char_Array_0[0][1]))) : (BOOL_unsigned_char_Array_0[1][1] == ((unsigned char) (! (! (BOOL_unsigned_char_Array_0[1][0] || BOOL_unsigned_char_Array_0[0][0]))))) [L102] EXPR (last_1_BOOL_unsigned_char_Array_0_1__1_ ? (last_1_BOOL_unsigned_char_Array_0_1__1_ ? (double_Array_0[1] == ((double) ((((double_Array_0[0]) < 0 ) ? -(double_Array_0[0]) : (double_Array_0[0]))))) : 1) : 1) && ((BOOL_unsigned_char_Array_0[0][2] || (256 >= (signed_char_Array_0[2] + 4))) ? (BOOL_unsigned_char_Array_0[1][1] == ((unsigned char) ((BOOL_unsigned_char_Array_0[1][2] || BOOL_unsigned_char_Array_0[0][2]) || BOOL_unsigned_char_Array_0[0][1]))) : (BOOL_unsigned_char_Array_0[1][1] == ((unsigned char) (! (! (BOOL_unsigned_char_Array_0[1][0] || BOOL_unsigned_char_Array_0[0][0])))))) [L102] EXPR ((last_1_BOOL_unsigned_char_Array_0_1__1_ ? (last_1_BOOL_unsigned_char_Array_0_1__1_ ? (double_Array_0[1] == ((double) ((((double_Array_0[0]) < 0 ) ? -(double_Array_0[0]) : (double_Array_0[0]))))) : 1) : 1) && ((BOOL_unsigned_char_Array_0[0][2] || (256 >= (signed_char_Array_0[2] + 4))) ? (BOOL_unsigned_char_Array_0[1][1] == ((unsigned char) ((BOOL_unsigned_char_Array_0[1][2] || BOOL_unsigned_char_Array_0[0][2]) || BOOL_unsigned_char_Array_0[0][1]))) : (BOOL_unsigned_char_Array_0[1][1] == ((unsigned char) (! (! (BOOL_unsigned_char_Array_0[1][0] || BOOL_unsigned_char_Array_0[0][0]))))))) && ((-10 >= signed_char_Array_0[2]) ? ((((unsigned_char_Array_0[2] + unsigned_char_Array_0[0]) - ((((unsigned_char_Array_0[1]) < (1)) ? (unsigned_char_Array_0[1]) : (1)))) > (~ signed_char_Array_0[2])) ? (signed_char_Array_0[0] == ((signed char) (signed_char_Array_0[3] + signed_char_Array_0[4]))) : (signed_char_Array_0[0] == ((signed char) signed_char_Array_0[1]))) : 1) [L102] EXPR signed_char_Array_0[2] [L102] EXPR (-10 >= signed_char_Array_0[2]) ? ((((unsigned_char_Array_0[2] + unsigned_char_Array_0[0]) - ((((unsigned_char_Array_0[1]) < (1)) ? (unsigned_char_Array_0[1]) : (1)))) > (~ signed_char_Array_0[2])) ? (signed_char_Array_0[0] == ((signed char) (signed_char_Array_0[3] + signed_char_Array_0[4]))) : (signed_char_Array_0[0] == ((signed char) signed_char_Array_0[1]))) : 1 [L102] EXPR ((last_1_BOOL_unsigned_char_Array_0_1__1_ ? (last_1_BOOL_unsigned_char_Array_0_1__1_ ? (double_Array_0[1] == ((double) ((((double_Array_0[0]) < 0 ) ? -(double_Array_0[0]) : (double_Array_0[0]))))) : 1) : 1) && ((BOOL_unsigned_char_Array_0[0][2] || (256 >= (signed_char_Array_0[2] + 4))) ? (BOOL_unsigned_char_Array_0[1][1] == ((unsigned char) ((BOOL_unsigned_char_Array_0[1][2] || BOOL_unsigned_char_Array_0[0][2]) || BOOL_unsigned_char_Array_0[0][1]))) : (BOOL_unsigned_char_Array_0[1][1] == ((unsigned char) (! (! (BOOL_unsigned_char_Array_0[1][0] || BOOL_unsigned_char_Array_0[0][0]))))))) && ((-10 >= signed_char_Array_0[2]) ? ((((unsigned_char_Array_0[2] + unsigned_char_Array_0[0]) - ((((unsigned_char_Array_0[1]) < (1)) ? (unsigned_char_Array_0[1]) : (1)))) > (~ signed_char_Array_0[2])) ? (signed_char_Array_0[0] == ((signed char) (signed_char_Array_0[3] + signed_char_Array_0[4]))) : (signed_char_Array_0[0] == ((signed char) signed_char_Array_0[1]))) : 1) [L102] EXPR (((last_1_BOOL_unsigned_char_Array_0_1__1_ ? (last_1_BOOL_unsigned_char_Array_0_1__1_ ? (double_Array_0[1] == ((double) ((((double_Array_0[0]) < 0 ) ? -(double_Array_0[0]) : (double_Array_0[0]))))) : 1) : 1) && ((BOOL_unsigned_char_Array_0[0][2] || (256 >= (signed_char_Array_0[2] + 4))) ? (BOOL_unsigned_char_Array_0[1][1] == ((unsigned char) ((BOOL_unsigned_char_Array_0[1][2] || BOOL_unsigned_char_Array_0[0][2]) || BOOL_unsigned_char_Array_0[0][1]))) : (BOOL_unsigned_char_Array_0[1][1] == ((unsigned char) (! (! (BOOL_unsigned_char_Array_0[1][0] || BOOL_unsigned_char_Array_0[0][0]))))))) && ((-10 >= signed_char_Array_0[2]) ? ((((unsigned_char_Array_0[2] + unsigned_char_Array_0[0]) - ((((unsigned_char_Array_0[1]) < (1)) ? (unsigned_char_Array_0[1]) : (1)))) > (~ signed_char_Array_0[2])) ? (signed_char_Array_0[0] == ((signed char) (signed_char_Array_0[3] + signed_char_Array_0[4]))) : (signed_char_Array_0[0] == ((signed char) signed_char_Array_0[1]))) : 1)) && ((double_Array_0[1] >= (- (double_Array_0[0] * double_Array_0[1]))) ? (signed_char_Array_0[2] == ((signed char) signed_char_Array_0[4])) : 1) [L102] EXPR double_Array_0[1] [L102] EXPR double_Array_0[0] [L102] EXPR double_Array_0[1] [L102] EXPR (double_Array_0[1] >= (- (double_Array_0[0] * double_Array_0[1]))) ? (signed_char_Array_0[2] == ((signed char) signed_char_Array_0[4])) : 1 [L102] EXPR signed_char_Array_0[2] [L102] EXPR signed_char_Array_0[4] [L102] EXPR (double_Array_0[1] >= (- (double_Array_0[0] * double_Array_0[1]))) ? (signed_char_Array_0[2] == ((signed char) signed_char_Array_0[4])) : 1 [L102] EXPR (((last_1_BOOL_unsigned_char_Array_0_1__1_ ? (last_1_BOOL_unsigned_char_Array_0_1__1_ ? (double_Array_0[1] == ((double) ((((double_Array_0[0]) < 0 ) ? -(double_Array_0[0]) : (double_Array_0[0]))))) : 1) : 1) && ((BOOL_unsigned_char_Array_0[0][2] || (256 >= (signed_char_Array_0[2] + 4))) ? (BOOL_unsigned_char_Array_0[1][1] == ((unsigned char) ((BOOL_unsigned_char_Array_0[1][2] || BOOL_unsigned_char_Array_0[0][2]) || BOOL_unsigned_char_Array_0[0][1]))) : (BOOL_unsigned_char_Array_0[1][1] == ((unsigned char) (! (! (BOOL_unsigned_char_Array_0[1][0] || BOOL_unsigned_char_Array_0[0][0]))))))) && ((-10 >= signed_char_Array_0[2]) ? ((((unsigned_char_Array_0[2] + unsigned_char_Array_0[0]) - ((((unsigned_char_Array_0[1]) < (1)) ? (unsigned_char_Array_0[1]) : (1)))) > (~ signed_char_Array_0[2])) ? (signed_char_Array_0[0] == ((signed char) (signed_char_Array_0[3] + signed_char_Array_0[4]))) : (signed_char_Array_0[0] == ((signed char) signed_char_Array_0[1]))) : 1)) && ((double_Array_0[1] >= (- (double_Array_0[0] * double_Array_0[1]))) ? (signed_char_Array_0[2] == ((signed char) signed_char_Array_0[4])) : 1) [L102-L103] return (((last_1_BOOL_unsigned_char_Array_0_1__1_ ? (last_1_BOOL_unsigned_char_Array_0_1__1_ ? (double_Array_0[1] == ((double) ((((double_Array_0[0]) < 0 ) ? -(double_Array_0[0]) : (double_Array_0[0]))))) : 1) : 1) && ((BOOL_unsigned_char_Array_0[0][2] || (256 >= (signed_char_Array_0[2] + 4))) ? (BOOL_unsigned_char_Array_0[1][1] == ((unsigned char) ((BOOL_unsigned_char_Array_0[1][2] || BOOL_unsigned_char_Array_0[0][2]) || BOOL_unsigned_char_Array_0[0][1]))) : (BOOL_unsigned_char_Array_0[1][1] == ((unsigned char) (! (! (BOOL_unsigned_char_Array_0[1][0] || BOOL_unsigned_char_Array_0[0][0]))))))) && ((-10 >= signed_char_Array_0[2]) ? ((((unsigned_char_Array_0[2] + unsigned_char_Array_0[0]) - ((((unsigned_char_Array_0[1]) < (1)) ? (unsigned_char_Array_0[1]) : (1)))) > (~ signed_char_Array_0[2])) ? (signed_char_Array_0[0] == ((signed char) (signed_char_Array_0[3] + signed_char_Array_0[4]))) : (signed_char_Array_0[0] == ((signed char) signed_char_Array_0[1]))) : 1)) && ((double_Array_0[1] >= (- (double_Array_0[0] * double_Array_0[1]))) ? (signed_char_Array_0[2] == ((signed char) signed_char_Array_0[4])) : 1) ; [L112] RET, EXPR property() [L112] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=0, cond=0, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] [L19] reach_error() VAL [BOOL_unsigned_char_Array_0={4:0}, \old(cond)=0, cond=0, double_Array_0={5:0}, isInitial=1, last_1_BOOL_unsigned_char_Array_0_1__1_=0, signed_char_Array_0={6:0}, unsigned_char_Array_0={7:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.7s, OverallIterations: 1, TraceHistogramMax: 23, 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=55occurred 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, 1.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 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 17:06:02,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-34.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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_0135d73e-7f44-436f-927b-d8ce750574ac/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 13746df1a3970e1622f02d2f93a14bca6db6fbfac535cca3dbaecdc2ea14baae --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:06:04,808 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:06:04,899 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 17:06:04,906 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:06:04,907 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:06:04,939 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:06:04,940 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:06:04,940 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:06:04,941 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:06:04,942 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:06:04,943 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:06:04,943 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:06:04,944 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:06:04,944 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:06:04,945 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:06:04,946 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:06:04,947 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:06:04,948 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:06:04,948 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:06:04,949 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:06:04,950 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:06:04,950 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:06:04,951 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:06:04,951 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:06:04,952 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 17:06:04,952 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 17:06:04,953 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 17:06:04,953 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:06:04,953 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:06:04,954 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:06:04,955 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:06:04,955 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 17:06:04,955 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:06:04,956 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:06:04,956 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:06:04,956 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:06:04,957 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:06:04,957 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:06:04,957 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 17:06:04,957 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 17:06:04,958 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:06:04,958 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:06:04,958 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:06:04,959 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:06:04,959 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_0135d73e-7f44-436f-927b-d8ce750574ac/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13746df1a3970e1622f02d2f93a14bca6db6fbfac535cca3dbaecdc2ea14baae [2023-12-02 17:06:05,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:06:05,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:06:05,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:06:05,317 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:06:05,317 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:06:05,319 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-34.i [2023-12-02 17:06:08,505 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:06:08,746 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:06:08,747 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-34.i [2023-12-02 17:06:08,760 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/data/770a11381/a7c7dc0b1c954e74b26d637bd06d3453/FLAGd1c9974f6 [2023-12-02 17:06:08,778 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/data/770a11381/a7c7dc0b1c954e74b26d637bd06d3453 [2023-12-02 17:06:08,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:06:08,783 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:06:08,785 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:06:08,785 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:06:08,791 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:06:08,792 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:06:08" (1/1) ... [2023-12-02 17:06:08,793 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3df2f239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:06:08, skipping insertion in model container [2023-12-02 17:06:08,793 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:06:08" (1/1) ... [2023-12-02 17:06:08,833 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:06:09,021 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_0135d73e-7f44-436f-927b-d8ce750574ac/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-34.i[916,929] [2023-12-02 17:06:09,093 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:06:09,112 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:06:09,128 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_0135d73e-7f44-436f-927b-d8ce750574ac/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-34.i[916,929] [2023-12-02 17:06:09,172 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:06:09,199 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:06:09,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:06:09 WrapperNode [2023-12-02 17:06:09,200 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:06:09,201 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:06:09,202 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:06:09,202 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:06:09,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:06:09" (1/1) ... [2023-12-02 17:06:09,232 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:06:09" (1/1) ... [2023-12-02 17:06:09,277 INFO L138 Inliner]: procedures = 30, calls = 153, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 394 [2023-12-02 17:06:09,277 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:06:09,278 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:06:09,278 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:06:09,279 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:06:09,306 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:06:09" (1/1) ... [2023-12-02 17:06:09,306 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:06:09" (1/1) ... [2023-12-02 17:06:09,317 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:06:09" (1/1) ... [2023-12-02 17:06:09,317 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:06:09" (1/1) ... [2023-12-02 17:06:09,376 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:06:09" (1/1) ... [2023-12-02 17:06:09,384 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:06:09" (1/1) ... [2023-12-02 17:06:09,388 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:06:09" (1/1) ... [2023-12-02 17:06:09,392 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:06:09" (1/1) ... [2023-12-02 17:06:09,398 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:06:09,400 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:06:09,400 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:06:09,400 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:06:09,401 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:06:09" (1/1) ... [2023-12-02 17:06:09,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:06:09,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:06:09,435 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:06:09,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:06:09,485 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:06:09,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2023-12-02 17:06:09,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2023-12-02 17:06:09,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-12-02 17:06:09,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 17:06:09,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2023-12-02 17:06:09,486 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 17:06:09,486 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 17:06:09,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:06:09,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:06:09,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-12-02 17:06:09,613 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:06:09,616 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:06:17,073 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:06:17,144 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:06:17,144 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 17:06:17,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:06:17 BoogieIcfgContainer [2023-12-02 17:06:17,145 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:06:17,148 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:06:17,148 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:06:17,152 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:06:17,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:06:08" (1/3) ... [2023-12-02 17:06:17,154 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ec9dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:06:17, skipping insertion in model container [2023-12-02 17:06:17,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:06:09" (2/3) ... [2023-12-02 17:06:17,154 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ec9dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:06:17, skipping insertion in model container [2023-12-02 17:06:17,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:06:17" (3/3) ... [2023-12-02 17:06:17,156 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-34.i [2023-12-02 17:06:17,177 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:06:17,178 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 17:06:17,227 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:06:17,235 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;@74306b6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:06:17,235 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 17:06:17,240 INFO L276 IsEmpty]: Start isEmpty. Operand has 113 states, 87 states have (on average 1.4022988505747127) internal successors, (122), 88 states have internal predecessors, (122), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-02 17:06:17,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-02 17:06:17,262 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:06:17,263 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:06:17,264 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:06:17,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:06:17,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1977260690, now seen corresponding path program 1 times [2023-12-02 17:06:17,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:06:17,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [118672264] [2023-12-02 17:06:17,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:06:17,290 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 17:06:17,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:06:17,292 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:06:17,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:06:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:06:17,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 17:06:17,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:06:17,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 428 proven. 0 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2023-12-02 17:06:17,962 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:06:17,963 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:06:17,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [118672264] [2023-12-02 17:06:17,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [118672264] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:06:17,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:06:17,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:06:17,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398215903] [2023-12-02 17:06:17,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:06:17,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 17:06:17,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:06:18,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 17:06:18,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 17:06:18,014 INFO L87 Difference]: Start difference. First operand has 113 states, 87 states have (on average 1.4022988505747127) internal successors, (122), 88 states have internal predecessors, (122), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-02 17:06:18,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:06:18,083 INFO L93 Difference]: Finished difference Result 223 states and 357 transitions. [2023-12-02 17:06:18,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 17:06:18,086 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 166 [2023-12-02 17:06:18,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:06:18,096 INFO L225 Difference]: With dead ends: 223 [2023-12-02 17:06:18,097 INFO L226 Difference]: Without dead ends: 111 [2023-12-02 17:06:18,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 165 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 17:06:18,106 INFO L413 NwaCegarLoop]: 159 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, 159 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 17:06:18,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 159 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:06:18,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-12-02 17:06:18,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2023-12-02 17:06:18,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 86 states have (on average 1.3604651162790697) internal successors, (117), 86 states have internal predecessors, (117), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-02 17:06:18,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 163 transitions. [2023-12-02 17:06:18,170 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 163 transitions. Word has length 166 [2023-12-02 17:06:18,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:06:18,170 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 163 transitions. [2023-12-02 17:06:18,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-12-02 17:06:18,171 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 163 transitions. [2023-12-02 17:06:18,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-02 17:06:18,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:06:18,177 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:06:18,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:06:18,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:06:18,378 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:06:18,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:06:18,378 INFO L85 PathProgramCache]: Analyzing trace with hash -938237928, now seen corresponding path program 1 times [2023-12-02 17:06:18,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:06:18,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [44944552] [2023-12-02 17:06:18,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:06:18,380 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 17:06:18,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:06:18,381 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:06:18,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:06:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:06:18,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 17:06:18,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:06:18,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-02 17:06:18,947 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:06:18,947 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:06:18,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [44944552] [2023-12-02 17:06:18,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [44944552] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:06:18,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:06:18,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:06:18,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806036230] [2023-12-02 17:06:18,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:06:18,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:06:18,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:06:18,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:06:18,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:06:18,953 INFO L87 Difference]: Start difference. First operand 111 states and 163 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:06:19,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:06:19,021 INFO L93 Difference]: Finished difference Result 219 states and 322 transitions. [2023-12-02 17:06:19,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:06:19,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 166 [2023-12-02 17:06:19,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:06:19,026 INFO L225 Difference]: With dead ends: 219 [2023-12-02 17:06:19,026 INFO L226 Difference]: Without dead ends: 109 [2023-12-02 17:06:19,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 164 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 17:06:19,030 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 0 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:06:19,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 304 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:06:19,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-12-02 17:06:19,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2023-12-02 17:06:19,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 84 states have (on average 1.3452380952380953) internal successors, (113), 84 states have internal predecessors, (113), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-02 17:06:19,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 159 transitions. [2023-12-02 17:06:19,061 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 159 transitions. Word has length 166 [2023-12-02 17:06:19,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:06:19,064 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 159 transitions. [2023-12-02 17:06:19,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:06:19,065 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 159 transitions. [2023-12-02 17:06:19,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-02 17:06:19,069 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:06:19,069 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:06:19,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:06:19,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:06:19,276 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:06:19,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:06:19,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1668509628, now seen corresponding path program 1 times [2023-12-02 17:06:19,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:06:19,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [867065903] [2023-12-02 17:06:19,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:06:19,278 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 17:06:19,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:06:19,280 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:06:19,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:06:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:06:19,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:06:19,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:06:19,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-02 17:06:19,881 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:06:19,882 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:06:19,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [867065903] [2023-12-02 17:06:19,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [867065903] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:06:19,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:06:19,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:06:19,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141817078] [2023-12-02 17:06:19,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:06:19,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:06:19,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:06:19,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:06:19,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:06:19,887 INFO L87 Difference]: Start difference. First operand 109 states and 159 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:06:20,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:06:20,012 INFO L93 Difference]: Finished difference Result 241 states and 353 transitions. [2023-12-02 17:06:20,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:06:20,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 168 [2023-12-02 17:06:20,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:06:20,017 INFO L225 Difference]: With dead ends: 241 [2023-12-02 17:06:20,017 INFO L226 Difference]: Without dead ends: 133 [2023-12-02 17:06:20,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 165 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 17:06:20,021 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 61 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:06:20,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 475 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:06:20,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-12-02 17:06:20,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 111. [2023-12-02 17:06:20,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 86 states have (on average 1.3372093023255813) internal successors, (115), 86 states have internal predecessors, (115), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-12-02 17:06:20,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 161 transitions. [2023-12-02 17:06:20,038 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 161 transitions. Word has length 168 [2023-12-02 17:06:20,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:06:20,040 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 161 transitions. [2023-12-02 17:06:20,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:06:20,041 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 161 transitions. [2023-12-02 17:06:20,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-02 17:06:20,044 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:06:20,044 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:06:20,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-02 17:06:20,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:06:20,245 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:06:20,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:06:20,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1454650318, now seen corresponding path program 1 times [2023-12-02 17:06:20,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:06:20,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410425955] [2023-12-02 17:06:20,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:06:20,248 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 17:06:20,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:06:20,249 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:06:20,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:06:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:06:20,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:06:20,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:06:20,813 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 21 treesize of output 9 [2023-12-02 17:06:21,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-02 17:06:21,583 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:06:21,584 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:06:21,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410425955] [2023-12-02 17:06:21,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1410425955] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:06:21,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:06:21,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:06:21,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317804346] [2023-12-02 17:06:21,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:06:21,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:06:21,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:06:21,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:06:21,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:06:21,588 INFO L87 Difference]: Start difference. First operand 111 states and 161 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:06:24,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:06:27,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:06:27,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:06:27,296 INFO L93 Difference]: Finished difference Result 328 states and 473 transitions. [2023-12-02 17:06:27,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:06:27,297 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 170 [2023-12-02 17:06:27,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:06:27,301 INFO L225 Difference]: With dead ends: 328 [2023-12-02 17:06:27,301 INFO L226 Difference]: Without dead ends: 218 [2023-12-02 17:06:27,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 167 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 17:06:27,303 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 63 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 31 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-02 17:06:27,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 382 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 88 Invalid, 2 Unknown, 0 Unchecked, 5.6s Time] [2023-12-02 17:06:27,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-12-02 17:06:27,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 188. [2023-12-02 17:06:27,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 138 states have (on average 1.2826086956521738) internal successors, (177), 138 states have internal predecessors, (177), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-02 17:06:27,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 269 transitions. [2023-12-02 17:06:27,339 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 269 transitions. Word has length 170 [2023-12-02 17:06:27,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:06:27,341 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 269 transitions. [2023-12-02 17:06:27,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:06:27,341 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 269 transitions. [2023-12-02 17:06:27,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-02 17:06:27,344 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:06:27,345 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:06:27,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:06:27,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:06:27,548 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:06:27,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:06:27,548 INFO L85 PathProgramCache]: Analyzing trace with hash -2113888136, now seen corresponding path program 1 times [2023-12-02 17:06:27,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:06:27,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335728513] [2023-12-02 17:06:27,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:06:27,550 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 17:06:27,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:06:27,551 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:06:27,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:06:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:06:28,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 17:06:28,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:06:28,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-02 17:06:28,130 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:06:28,131 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:06:28,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1335728513] [2023-12-02 17:06:28,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1335728513] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:06:28,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:06:28,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:06:28,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444510911] [2023-12-02 17:06:28,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:06:28,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:06:28,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:06:28,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:06:28,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:06:28,134 INFO L87 Difference]: Start difference. First operand 188 states and 269 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:06:28,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:06:28,195 INFO L93 Difference]: Finished difference Result 325 states and 468 transitions. [2023-12-02 17:06:28,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:06:28,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 173 [2023-12-02 17:06:28,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:06:28,199 INFO L225 Difference]: With dead ends: 325 [2023-12-02 17:06:28,200 INFO L226 Difference]: Without dead ends: 199 [2023-12-02 17:06:28,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 171 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 17:06:28,202 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 26 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:06:28,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 289 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:06:28,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-12-02 17:06:28,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 186. [2023-12-02 17:06:28,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 136 states have (on average 1.2720588235294117) internal successors, (173), 136 states have internal predecessors, (173), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-02 17:06:28,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 265 transitions. [2023-12-02 17:06:28,228 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 265 transitions. Word has length 173 [2023-12-02 17:06:28,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:06:28,229 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 265 transitions. [2023-12-02 17:06:28,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:06:28,229 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 265 transitions. [2023-12-02 17:06:28,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-02 17:06:28,232 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:06:28,233 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:06:28,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:06:28,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:06:28,444 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:06:28,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:06:28,445 INFO L85 PathProgramCache]: Analyzing trace with hash 682191306, now seen corresponding path program 1 times [2023-12-02 17:06:28,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:06:28,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1388685163] [2023-12-02 17:06:28,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:06:28,446 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 17:06:28,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:06:28,447 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:06:28,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:06:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:06:28,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 17:06:28,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:06:28,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-02 17:06:28,979 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:06:28,979 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:06:28,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1388685163] [2023-12-02 17:06:28,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1388685163] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:06:28,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:06:28,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:06:28,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320677419] [2023-12-02 17:06:28,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:06:28,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:06:28,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:06:28,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:06:28,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:06:28,982 INFO L87 Difference]: Start difference. First operand 186 states and 265 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:06:29,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:06:29,075 INFO L93 Difference]: Finished difference Result 342 states and 489 transitions. [2023-12-02 17:06:29,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:06:29,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 175 [2023-12-02 17:06:29,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:06:29,078 INFO L225 Difference]: With dead ends: 342 [2023-12-02 17:06:29,078 INFO L226 Difference]: Without dead ends: 218 [2023-12-02 17:06:29,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 172 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 17:06:29,080 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 63 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:06:29,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 459 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:06:29,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-12-02 17:06:29,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 188. [2023-12-02 17:06:29,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 138 states have (on average 1.2681159420289856) internal successors, (175), 138 states have internal predecessors, (175), 46 states have call successors, (46), 3 states have call predecessors, (46), 3 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-12-02 17:06:29,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 267 transitions. [2023-12-02 17:06:29,102 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 267 transitions. Word has length 175 [2023-12-02 17:06:29,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:06:29,102 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 267 transitions. [2023-12-02 17:06:29,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:06:29,103 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 267 transitions. [2023-12-02 17:06:29,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-02 17:06:29,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:06:29,106 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:06:29,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:06:29,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:06:29,307 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:06:29,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:06:29,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1075218316, now seen corresponding path program 1 times [2023-12-02 17:06:29,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:06:29,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [38259471] [2023-12-02 17:06:29,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:06:29,309 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 17:06:29,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:06:29,310 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:06:29,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:06:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:06:29,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 17:06:29,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:06:29,869 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 17:06:29,963 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 21 treesize of output 9 [2023-12-02 17:06:30,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-02 17:06:30,239 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:06:30,239 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:06:30,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [38259471] [2023-12-02 17:06:30,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [38259471] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:06:30,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:06:30,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-02 17:06:30,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456812604] [2023-12-02 17:06:30,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:06:30,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 17:06:30,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:06:30,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 17:06:30,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-02 17:06:30,243 INFO L87 Difference]: Start difference. First operand 188 states and 267 transitions. Second operand has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:06:32,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:06:35,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:06:37,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:06:39,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:06:41,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:06:43,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:06:44,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:06:47,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:06:49,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:06:51,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:06:53,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:06:55,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:06:57,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:06:59,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:07:01,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:07:03,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:07:05,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:07:07,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:07:09,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:07:09,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:07:09,197 INFO L93 Difference]: Finished difference Result 438 states and 620 transitions. [2023-12-02 17:07:09,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-02 17:07:09,199 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 175 [2023-12-02 17:07:09,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:07:09,203 INFO L225 Difference]: With dead ends: 438 [2023-12-02 17:07:09,203 INFO L226 Difference]: Without dead ends: 312 [2023-12-02 17:07:09,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2023-12-02 17:07:09,205 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 304 mSDsluCounter, 1273 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 12 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.4s IncrementalHoareTripleChecker+Time [2023-12-02 17:07:09,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 1421 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 480 Invalid, 16 Unknown, 0 Unchecked, 38.4s Time] [2023-12-02 17:07:09,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-12-02 17:07:09,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 266. [2023-12-02 17:07:09,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 205 states have (on average 1.2682926829268293) internal successors, (260), 206 states have internal predecessors, (260), 56 states have call successors, (56), 4 states have call predecessors, (56), 4 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-02 17:07:09,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 372 transitions. [2023-12-02 17:07:09,232 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 372 transitions. Word has length 175 [2023-12-02 17:07:09,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:07:09,233 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 372 transitions. [2023-12-02 17:07:09,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:07:09,233 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 372 transitions. [2023-12-02 17:07:09,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-02 17:07:09,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:07:09,236 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:07:09,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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)] Ended with exit code 0 [2023-12-02 17:07:09,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:07:09,440 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:07:09,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:07:09,440 INFO L85 PathProgramCache]: Analyzing trace with hash 940356744, now seen corresponding path program 1 times [2023-12-02 17:07:09,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:07:09,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784525068] [2023-12-02 17:07:09,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:07:09,441 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 17:07:09,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:07:09,472 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:07:09,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:07:10,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:07:10,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 17:07:10,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:07:10,239 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 31 treesize of output 15 [2023-12-02 17:07:10,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-02 17:07:10,323 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:07:10,323 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:07:10,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1784525068] [2023-12-02 17:07:10,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1784525068] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:07:10,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:07:10,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:07:10,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382367172] [2023-12-02 17:07:10,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:07:10,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:07:10,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:07:10,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:07:10,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:07:10,326 INFO L87 Difference]: Start difference. First operand 266 states and 372 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:07:12,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:07:14,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:07:17,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:07:19,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:07:21,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:07:23,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:07:25,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:07:27,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:07:29,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:07:30,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:07:30,423 INFO L93 Difference]: Finished difference Result 672 states and 934 transitions. [2023-12-02 17:07:30,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 17:07:30,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 175 [2023-12-02 17:07:30,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:07:30,429 INFO L225 Difference]: With dead ends: 672 [2023-12-02 17:07:30,429 INFO L226 Difference]: Without dead ends: 468 [2023-12-02 17:07:30,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 17:07:30,431 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 135 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 7 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:07:30,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 397 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 207 Invalid, 9 Unknown, 0 Unchecked, 20.0s Time] [2023-12-02 17:07:30,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2023-12-02 17:07:30,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 410. [2023-12-02 17:07:30,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 334 states have (on average 1.278443113772455) internal successors, (427), 337 states have internal predecessors, (427), 68 states have call successors, (68), 7 states have call predecessors, (68), 7 states have return successors, (68), 65 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-02 17:07:30,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 563 transitions. [2023-12-02 17:07:30,467 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 563 transitions. Word has length 175 [2023-12-02 17:07:30,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:07:30,468 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 563 transitions. [2023-12-02 17:07:30,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:07:30,468 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 563 transitions. [2023-12-02 17:07:30,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-02 17:07:30,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:07:30,471 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:07:30,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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)] Forceful destruction successful, exit code 0 [2023-12-02 17:07:30,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:07:30,681 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:07:30,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:07:30,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1951473994, now seen corresponding path program 1 times [2023-12-02 17:07:30,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:07:30,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [679396518] [2023-12-02 17:07:30,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:07:30,683 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 17:07:30,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:07:30,684 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:07:30,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-02 17:07:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:07:31,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:07:31,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:07:31,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-02 17:07:31,355 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:07:31,356 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:07:31,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [679396518] [2023-12-02 17:07:31,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [679396518] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:07:31,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:07:31,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 17:07:31,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135479107] [2023-12-02 17:07:31,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:07:31,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:07:31,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:07:31,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:07:31,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:07:31,359 INFO L87 Difference]: Start difference. First operand 410 states and 563 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:07:33,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:07:35,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:07:38,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:07:40,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:07:42,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:07:44,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:07:46,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:07:48,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:07:48,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:07:48,409 INFO L93 Difference]: Finished difference Result 950 states and 1304 transitions. [2023-12-02 17:07:48,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 17:07:48,410 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 175 [2023-12-02 17:07:48,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:07:48,414 INFO L225 Difference]: With dead ends: 950 [2023-12-02 17:07:48,415 INFO L226 Difference]: Without dead ends: 606 [2023-12-02 17:07:48,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-02 17:07:48,416 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 178 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 8 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2023-12-02 17:07:48,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 598 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 202 Invalid, 7 Unknown, 0 Unchecked, 16.9s Time] [2023-12-02 17:07:48,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2023-12-02 17:07:48,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 404. [2023-12-02 17:07:48,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 328 states have (on average 1.2774390243902438) internal successors, (419), 331 states have internal predecessors, (419), 68 states have call successors, (68), 7 states have call predecessors, (68), 7 states have return successors, (68), 65 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-02 17:07:48,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 555 transitions. [2023-12-02 17:07:48,451 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 555 transitions. Word has length 175 [2023-12-02 17:07:48,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:07:48,452 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 555 transitions. [2023-12-02 17:07:48,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:07:48,452 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 555 transitions. [2023-12-02 17:07:48,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-02 17:07:48,454 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:07:48,455 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:07:48,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-12-02 17:07:48,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:07:48,656 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:07:48,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:07:48,656 INFO L85 PathProgramCache]: Analyzing trace with hash 2014361674, now seen corresponding path program 1 times [2023-12-02 17:07:48,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:07:48,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79539040] [2023-12-02 17:07:48,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:07:48,657 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 17:07:48,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:07:48,658 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:07:48,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-02 17:07:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:07:49,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:07:49,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:07:49,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-02 17:07:49,280 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:07:49,281 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:07:49,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79539040] [2023-12-02 17:07:49,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79539040] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:07:49,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:07:49,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 17:07:49,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269980908] [2023-12-02 17:07:49,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:07:49,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:07:49,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:07:49,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:07:49,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:07:49,283 INFO L87 Difference]: Start difference. First operand 404 states and 555 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:07:51,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:07:53,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:07:56,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:07:57,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:07:59,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:07:59,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:07:59,655 INFO L93 Difference]: Finished difference Result 763 states and 1047 transitions. [2023-12-02 17:07:59,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 17:07:59,656 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 175 [2023-12-02 17:07:59,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:07:59,659 INFO L225 Difference]: With dead ends: 763 [2023-12-02 17:07:59,659 INFO L226 Difference]: Without dead ends: 425 [2023-12-02 17:07:59,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-12-02 17:07:59,661 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 77 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:07:59,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 558 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 256 Invalid, 3 Unknown, 0 Unchecked, 10.3s Time] [2023-12-02 17:07:59,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2023-12-02 17:07:59,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 377. [2023-12-02 17:07:59,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 301 states have (on average 1.2691029900332227) internal successors, (382), 304 states have internal predecessors, (382), 68 states have call successors, (68), 7 states have call predecessors, (68), 7 states have return successors, (68), 65 states have call predecessors, (68), 68 states have call successors, (68) [2023-12-02 17:07:59,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 518 transitions. [2023-12-02 17:07:59,686 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 518 transitions. Word has length 175 [2023-12-02 17:07:59,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:07:59,687 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 518 transitions. [2023-12-02 17:07:59,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:07:59,688 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 518 transitions. [2023-12-02 17:07:59,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-02 17:07:59,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:07:59,690 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:07:59,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-12-02 17:07:59,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:07:59,890 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:07:59,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:07:59,891 INFO L85 PathProgramCache]: Analyzing trace with hash 430883654, now seen corresponding path program 1 times [2023-12-02 17:07:59,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:07:59,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130446973] [2023-12-02 17:07:59,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:07:59,892 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 17:07:59,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:07:59,893 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:07:59,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:08:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:08:00,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-02 17:08:00,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:08:01,597 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 17:08:02,079 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 20 treesize of output 15 [2023-12-02 17:08:02,361 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 20 treesize of output 15 [2023-12-02 17:08:02,666 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 20 treesize of output 15 [2023-12-02 17:08:02,968 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 20 treesize of output 15 [2023-12-02 17:08:03,267 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 20 treesize of output 15 [2023-12-02 17:08:03,566 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 20 treesize of output 15 [2023-12-02 17:08:03,844 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 20 treesize of output 15 [2023-12-02 17:08:04,146 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 20 treesize of output 15 [2023-12-02 17:08:04,423 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 42 treesize of output 20 [2023-12-02 17:08:04,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 27 proven. 608 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2023-12-02 17:08:04,632 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:08:04,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-02 17:08:04,921 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:08:04,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130446973] [2023-12-02 17:08:04,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [130446973] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 17:08:04,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:08:04,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2023-12-02 17:08:04,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572816598] [2023-12-02 17:08:04,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:08:04,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:08:04,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:08:04,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:08:04,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-12-02 17:08:04,924 INFO L87 Difference]: Start difference. First operand 377 states and 518 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:08:07,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:08:09,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:08:11,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:08:13,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:08:15,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:08:17,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:08:19,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:08:21,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:08:23,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:08:23,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:08:23,737 INFO L93 Difference]: Finished difference Result 915 states and 1251 transitions. [2023-12-02 17:08:23,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:08:23,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 175 [2023-12-02 17:08:23,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:08:23,742 INFO L225 Difference]: With dead ends: 915 [2023-12-02 17:08:23,742 INFO L226 Difference]: Without dead ends: 604 [2023-12-02 17:08:23,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-02 17:08:23,744 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 119 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 6 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2023-12-02 17:08:23,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 462 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 205 Invalid, 8 Unknown, 0 Unchecked, 18.7s Time] [2023-12-02 17:08:23,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2023-12-02 17:08:23,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 513. [2023-12-02 17:08:23,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 420 states have (on average 1.2666666666666666) internal successors, (532), 425 states have internal predecessors, (532), 82 states have call successors, (82), 10 states have call predecessors, (82), 10 states have return successors, (82), 77 states have call predecessors, (82), 82 states have call successors, (82) [2023-12-02 17:08:23,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 696 transitions. [2023-12-02 17:08:23,776 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 696 transitions. Word has length 175 [2023-12-02 17:08:23,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:08:23,777 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 696 transitions. [2023-12-02 17:08:23,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:08:23,777 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 696 transitions. [2023-12-02 17:08:23,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-02 17:08:23,779 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:08:23,779 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:08:23,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:08:23,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:08:23,980 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:08:23,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:08:23,981 INFO L85 PathProgramCache]: Analyzing trace with hash 492923268, now seen corresponding path program 1 times [2023-12-02 17:08:23,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:08:23,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1890537294] [2023-12-02 17:08:23,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:08:23,982 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 17:08:23,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:08:23,983 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:08:23,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:08:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:08:24,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:08:24,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:08:24,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-02 17:08:24,591 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:08:24,591 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:08:24,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1890537294] [2023-12-02 17:08:24,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1890537294] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:08:24,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:08:24,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 17:08:24,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032227678] [2023-12-02 17:08:24,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:08:24,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:08:24,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:08:24,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:08:24,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:08:24,594 INFO L87 Difference]: Start difference. First operand 513 states and 696 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:08:26,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:08:28,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:08:31,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:08:33,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:08:35,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:08:37,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:08:39,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:08:40,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:08:40,377 INFO L93 Difference]: Finished difference Result 1030 states and 1393 transitions. [2023-12-02 17:08:40,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:08:40,382 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 175 [2023-12-02 17:08:40,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:08:40,387 INFO L225 Difference]: With dead ends: 1030 [2023-12-02 17:08:40,387 INFO L226 Difference]: Without dead ends: 587 [2023-12-02 17:08:40,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-02 17:08:40,390 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 77 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 4 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2023-12-02 17:08:40,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 741 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 303 Invalid, 6 Unknown, 0 Unchecked, 15.7s Time] [2023-12-02 17:08:40,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2023-12-02 17:08:40,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 433. [2023-12-02 17:08:40,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 352 states have (on average 1.2613636363636365) internal successors, (444), 355 states have internal predecessors, (444), 70 states have call successors, (70), 10 states have call predecessors, (70), 10 states have return successors, (70), 67 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-02 17:08:40,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 584 transitions. [2023-12-02 17:08:40,426 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 584 transitions. Word has length 175 [2023-12-02 17:08:40,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:08:40,426 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 584 transitions. [2023-12-02 17:08:40,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:08:40,427 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 584 transitions. [2023-12-02 17:08:40,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-02 17:08:40,429 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:08:40,429 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:08:40,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:08:40,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:08:40,630 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:08:40,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:08:40,630 INFO L85 PathProgramCache]: Analyzing trace with hash 493771334, now seen corresponding path program 1 times [2023-12-02 17:08:40,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:08:40,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322645411] [2023-12-02 17:08:40,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:08:40,631 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 17:08:40,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:08:40,633 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:08:40,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-02 17:08:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:08:41,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-02 17:08:41,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:08:42,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-12-02 17:08:43,079 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 20 treesize of output 15 [2023-12-02 17:08:43,379 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 20 treesize of output 15 [2023-12-02 17:08:43,666 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 20 treesize of output 15 [2023-12-02 17:08:43,953 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 20 treesize of output 15 [2023-12-02 17:08:44,243 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 20 treesize of output 15 [2023-12-02 17:08:44,519 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 20 treesize of output 15 [2023-12-02 17:08:44,835 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 20 treesize of output 15 [2023-12-02 17:08:45,091 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 30 treesize of output 14 [2023-12-02 17:08:45,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 27 proven. 608 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2023-12-02 17:08:45,242 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:08:45,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-02 17:08:45,515 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:08:45,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1322645411] [2023-12-02 17:08:45,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1322645411] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 17:08:45,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:08:45,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2023-12-02 17:08:45,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146944444] [2023-12-02 17:08:45,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:08:45,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:08:45,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:08:45,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:08:45,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-12-02 17:08:45,518 INFO L87 Difference]: Start difference. First operand 433 states and 584 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:08:47,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:08:49,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:08:52,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:08:53,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:08:55,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:08:57,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:08:58,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:08:58,169 INFO L93 Difference]: Finished difference Result 851 states and 1145 transitions. [2023-12-02 17:08:58,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:08:58,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 175 [2023-12-02 17:08:58,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:08:58,174 INFO L225 Difference]: With dead ends: 851 [2023-12-02 17:08:58,174 INFO L226 Difference]: Without dead ends: 488 [2023-12-02 17:08:58,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-02 17:08:58,180 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 68 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 4 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2023-12-02 17:08:58,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 538 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 212 Invalid, 5 Unknown, 0 Unchecked, 12.6s Time] [2023-12-02 17:08:58,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-12-02 17:08:58,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 437. [2023-12-02 17:08:58,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 355 states have (on average 1.2535211267605635) internal successors, (445), 358 states have internal predecessors, (445), 70 states have call successors, (70), 11 states have call predecessors, (70), 11 states have return successors, (70), 67 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-02 17:08:58,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 585 transitions. [2023-12-02 17:08:58,203 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 585 transitions. Word has length 175 [2023-12-02 17:08:58,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:08:58,204 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 585 transitions. [2023-12-02 17:08:58,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:08:58,205 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 585 transitions. [2023-12-02 17:08:58,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-02 17:08:58,207 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:08:58,207 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:08:58,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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)] Forceful destruction successful, exit code 0 [2023-12-02 17:08:58,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:08:58,408 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:08:58,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:08:58,408 INFO L85 PathProgramCache]: Analyzing trace with hash 358909762, now seen corresponding path program 1 times [2023-12-02 17:08:58,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:08:58,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1327707882] [2023-12-02 17:08:58,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:08:58,409 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 17:08:58,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:08:58,412 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:08:58,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-02 17:08:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:08:59,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 17:08:59,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:08:59,165 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 47 treesize of output 25 [2023-12-02 17:08:59,671 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:08:59,671 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 82 treesize of output 40 [2023-12-02 17:08:59,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-02 17:08:59,923 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:08:59,924 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:08:59,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1327707882] [2023-12-02 17:08:59,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1327707882] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:08:59,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:08:59,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-02 17:08:59,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529520905] [2023-12-02 17:08:59,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:08:59,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 17:08:59,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:08:59,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 17:08:59,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-02 17:08:59,927 INFO L87 Difference]: Start difference. First operand 437 states and 585 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:09:02,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:04,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:08,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:10,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:12,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:13,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:15,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:17,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:19,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:21,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:23,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:26,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:27,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:09:27,126 INFO L93 Difference]: Finished difference Result 840 states and 1126 transitions. [2023-12-02 17:09:27,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 17:09:27,128 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 175 [2023-12-02 17:09:27,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:09:27,131 INFO L225 Difference]: With dead ends: 840 [2023-12-02 17:09:27,131 INFO L226 Difference]: Without dead ends: 473 [2023-12-02 17:09:27,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-12-02 17:09:27,133 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 190 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 4 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.7s IncrementalHoareTripleChecker+Time [2023-12-02 17:09:27,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 1072 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 394 Invalid, 11 Unknown, 0 Unchecked, 26.7s Time] [2023-12-02 17:09:27,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2023-12-02 17:09:27,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 445. [2023-12-02 17:09:27,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 362 states have (on average 1.2486187845303867) internal successors, (452), 365 states have internal predecessors, (452), 70 states have call successors, (70), 12 states have call predecessors, (70), 12 states have return successors, (70), 67 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-02 17:09:27,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 592 transitions. [2023-12-02 17:09:27,167 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 592 transitions. Word has length 175 [2023-12-02 17:09:27,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:09:27,168 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 592 transitions. [2023-12-02 17:09:27,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:09:27,168 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 592 transitions. [2023-12-02 17:09:27,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-02 17:09:27,170 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:09:27,171 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:09:27,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-12-02 17:09:27,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:09:27,371 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:09:27,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:09:27,372 INFO L85 PathProgramCache]: Analyzing trace with hash 751936772, now seen corresponding path program 1 times [2023-12-02 17:09:27,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:09:27,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [788419525] [2023-12-02 17:09:27,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:09:27,373 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 17:09:27,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:09:27,374 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:09:27,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:09:27,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:09:27,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:09:27,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:09:27,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-02 17:09:27,971 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:09:27,971 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:09:27,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [788419525] [2023-12-02 17:09:27,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [788419525] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:09:27,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:09:27,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 17:09:27,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508859590] [2023-12-02 17:09:27,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:09:27,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:09:27,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:09:27,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:09:27,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:09:27,974 INFO L87 Difference]: Start difference. First operand 445 states and 592 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:09:30,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:32,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:34,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:37,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:39,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:41,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:43,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:44,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:47,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:47,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:09:47,333 INFO L93 Difference]: Finished difference Result 965 states and 1286 transitions. [2023-12-02 17:09:47,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:09:47,367 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 175 [2023-12-02 17:09:47,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:09:47,371 INFO L225 Difference]: With dead ends: 965 [2023-12-02 17:09:47,371 INFO L226 Difference]: Without dead ends: 590 [2023-12-02 17:09:47,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-02 17:09:47,372 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 96 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 3 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:09:47,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 727 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 286 Invalid, 7 Unknown, 0 Unchecked, 19.3s Time] [2023-12-02 17:09:47,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2023-12-02 17:09:47,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 441. [2023-12-02 17:09:47,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 358 states have (on average 1.2458100558659218) internal successors, (446), 361 states have internal predecessors, (446), 70 states have call successors, (70), 12 states have call predecessors, (70), 12 states have return successors, (70), 67 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-02 17:09:47,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 586 transitions. [2023-12-02 17:09:47,398 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 586 transitions. Word has length 175 [2023-12-02 17:09:47,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:09:47,399 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 586 transitions. [2023-12-02 17:09:47,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:09:47,399 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 586 transitions. [2023-12-02 17:09:47,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-02 17:09:47,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:09:47,401 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:09:47,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:09:47,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:09:47,602 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:09:47,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:09:47,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1763054022, now seen corresponding path program 1 times [2023-12-02 17:09:47,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:09:47,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1857430045] [2023-12-02 17:09:47,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:09:47,603 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 17:09:47,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:09:47,604 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:09:47,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-02 17:09:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:09:48,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 17:09:48,227 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:09:48,322 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 30 treesize of output 14 [2023-12-02 17:09:48,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-02 17:09:48,385 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:09:48,385 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:09:48,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1857430045] [2023-12-02 17:09:48,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1857430045] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:09:48,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:09:48,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:09:48,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502928107] [2023-12-02 17:09:48,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:09:48,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:09:48,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:09:48,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:09:48,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:09:48,388 INFO L87 Difference]: Start difference. First operand 441 states and 586 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:09:50,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:52,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:55,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:56,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:09:58,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:00,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:02,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:02,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:10:02,294 INFO L93 Difference]: Finished difference Result 850 states and 1131 transitions. [2023-12-02 17:10:02,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:10:02,295 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 175 [2023-12-02 17:10:02,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:10:02,298 INFO L225 Difference]: With dead ends: 850 [2023-12-02 17:10:02,298 INFO L226 Difference]: Without dead ends: 479 [2023-12-02 17:10:02,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:10:02,300 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 64 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 4 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2023-12-02 17:10:02,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 594 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 254 Invalid, 4 Unknown, 0 Unchecked, 13.9s Time] [2023-12-02 17:10:02,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2023-12-02 17:10:02,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 435. [2023-12-02 17:10:02,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 352 states have (on average 1.2443181818181819) internal successors, (438), 355 states have internal predecessors, (438), 70 states have call successors, (70), 12 states have call predecessors, (70), 12 states have return successors, (70), 67 states have call predecessors, (70), 70 states have call successors, (70) [2023-12-02 17:10:02,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 578 transitions. [2023-12-02 17:10:02,333 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 578 transitions. Word has length 175 [2023-12-02 17:10:02,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:10:02,333 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 578 transitions. [2023-12-02 17:10:02,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:10:02,334 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 578 transitions. [2023-12-02 17:10:02,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-02 17:10:02,335 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:10:02,335 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:10:02,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-12-02 17:10:02,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:10:02,536 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:10:02,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:10:02,537 INFO L85 PathProgramCache]: Analyzing trace with hash -466228249, now seen corresponding path program 1 times [2023-12-02 17:10:02,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:10:02,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1093543168] [2023-12-02 17:10:02,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:10:02,538 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 17:10:02,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:10:02,539 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:10:02,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-02 17:10:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:10:03,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 17:10:03,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:10:04,517 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 17:10:04,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2023-12-02 17:10:04,732 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 21 treesize of output 9 [2023-12-02 17:10:04,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-02 17:10:04,963 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:10:04,963 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:10:04,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1093543168] [2023-12-02 17:10:04,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1093543168] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:10:04,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:10:04,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-02 17:10:04,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146451818] [2023-12-02 17:10:04,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:10:04,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 17:10:04,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:10:04,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 17:10:04,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-12-02 17:10:04,965 INFO L87 Difference]: Start difference. First operand 435 states and 578 transitions. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 12 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:10:07,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:10,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:13,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:14,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:16,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:18,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:21,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:21,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:10:21,717 INFO L93 Difference]: Finished difference Result 958 states and 1280 transitions. [2023-12-02 17:10:21,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-02 17:10:21,718 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 12 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 176 [2023-12-02 17:10:21,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:10:21,722 INFO L225 Difference]: With dead ends: 958 [2023-12-02 17:10:21,722 INFO L226 Difference]: Without dead ends: 593 [2023-12-02 17:10:21,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=196, Invalid=560, Unknown=0, NotChecked=0, Total=756 [2023-12-02 17:10:21,723 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 516 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 38 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:10:21,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 829 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 763 Invalid, 3 Unknown, 0 Unchecked, 16.0s Time] [2023-12-02 17:10:21,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2023-12-02 17:10:21,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 534. [2023-12-02 17:10:21,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 433 states have (on average 1.251732101616628) internal successors, (542), 438 states have internal predecessors, (542), 86 states have call successors, (86), 14 states have call predecessors, (86), 14 states have return successors, (86), 81 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-02 17:10:21,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 714 transitions. [2023-12-02 17:10:21,771 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 714 transitions. Word has length 176 [2023-12-02 17:10:21,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:10:21,772 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 714 transitions. [2023-12-02 17:10:21,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 12 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:10:21,772 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 714 transitions. [2023-12-02 17:10:21,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-02 17:10:21,774 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:10:21,774 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:10:21,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-12-02 17:10:21,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:10:21,975 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:10:21,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:10:21,976 INFO L85 PathProgramCache]: Analyzing trace with hash -601089821, now seen corresponding path program 1 times [2023-12-02 17:10:21,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:10:21,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071811562] [2023-12-02 17:10:21,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:10:21,977 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 17:10:21,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:10:21,978 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:10:21,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:10:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:10:22,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-02 17:10:22,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:10:23,653 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 17:10:24,080 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 31 treesize of output 15 [2023-12-02 17:10:24,425 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 20 treesize of output 15 [2023-12-02 17:10:24,682 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 20 treesize of output 15 [2023-12-02 17:10:24,985 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 20 treesize of output 15 [2023-12-02 17:10:25,280 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 20 treesize of output 15 [2023-12-02 17:10:25,579 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 20 treesize of output 15 [2023-12-02 17:10:25,846 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 20 treesize of output 15 [2023-12-02 17:10:26,161 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 20 treesize of output 15 [2023-12-02 17:10:26,449 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 20 treesize of output 15 [2023-12-02 17:10:26,771 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 42 treesize of output 20 [2023-12-02 17:10:26,894 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 31 treesize of output 24 [2023-12-02 17:10:27,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 79 proven. 614 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2023-12-02 17:10:27,052 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:10:27,136 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_572 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_572) |c_~#BOOL_unsigned_char_Array_0~0.base|) (bvadd (_ bv2 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (_ bv0 8)))) is different from false [2023-12-02 17:10:27,186 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_572 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_570 (_ BitVec 32))) (not (= ((_ extract 7 0) (select (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base|) (bvadd (_ bv4 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|) v_ArrVal_570)) |c_~#signed_char_Array_0~0.base| v_ArrVal_572) |c_~#BOOL_unsigned_char_Array_0~0.base|) (bvadd (_ bv2 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (_ bv0 8)))) is different from false [2023-12-02 17:10:27,410 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_572 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_569 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_570 (_ BitVec 32))) (let ((.cse0 (select (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_569) |c_~#BOOL_unsigned_char_Array_0~0.base|)) (.cse1 (bvadd (_ bv2 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (or (not (= (_ bv0 8) ((_ extract 7 0) (select (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse0 (bvadd (_ bv4 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|) v_ArrVal_570)) |c_~#signed_char_Array_0~0.base| v_ArrVal_572) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse1)))) (= ((_ extract 7 0) (select .cse0 .cse1)) (_ bv0 8))))) is different from false [2023-12-02 17:10:27,487 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:10:27,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071811562] [2023-12-02 17:10:27,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071811562] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:10:27,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1260972026] [2023-12-02 17:10:27,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:10:27,488 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 17:10:27,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 17:10:27,489 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 17:10:27,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2023-12-02 17:10:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:10:29,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-02 17:10:29,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:10:30,129 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 17:10:30,640 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 21 treesize of output 20 [2023-12-02 17:10:31,264 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 17:10:31,665 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 17:10:32,058 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 17:10:32,443 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 17:10:32,842 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 17:10:33,226 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 17:10:33,641 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 17:10:34,173 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 17:10:34,663 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 41 treesize of output 28 [2023-12-02 17:10:34,852 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 17:10:35,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 112 proven. 608 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-12-02 17:10:35,073 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:10:35,321 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_614 (_ BitVec 32)) (v_ArrVal_616 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) (select (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base|) (bvadd (_ bv4 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|) v_ArrVal_614)) |c_~#signed_char_Array_0~0.base| v_ArrVal_616) |c_~#BOOL_unsigned_char_Array_0~0.base|) (bvadd (_ bv2 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (_ bv0 8)))) is different from false [2023-12-02 17:10:35,615 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_614 (_ BitVec 32)) (v_ArrVal_616 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_613 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_613) |c_~#BOOL_unsigned_char_Array_0~0.base|)) (.cse1 (bvadd (_ bv2 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (or (not (= ((_ extract 7 0) (select (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse0 (bvadd (_ bv4 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|) v_ArrVal_614)) |c_~#signed_char_Array_0~0.base| v_ArrVal_616) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse1)) (_ bv0 8))) (= ((_ extract 7 0) (select .cse0 .cse1)) (_ bv0 8))))) is different from false [2023-12-02 17:10:35,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1260972026] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:10:35,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106023059] [2023-12-02 17:10:35,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:10:35,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:10:35,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:10:35,706 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:10:35,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 17:10:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:10:37,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 17:10:37,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:10:39,643 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 31 treesize of output 15 [2023-12-02 17:10:39,730 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 20 treesize of output 15 [2023-12-02 17:10:39,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-02 17:10:39,868 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:10:39,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106023059] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:10:39,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:10:39,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12, 10] total 24 [2023-12-02 17:10:39,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447951255] [2023-12-02 17:10:39,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:10:39,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 17:10:39,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:10:39,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 17:10:39,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=742, Unknown=28, NotChecked=310, Total=1260 [2023-12-02 17:10:39,872 INFO L87 Difference]: Start difference. First operand 534 states and 714 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:10:42,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:44,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:46,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:49,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:51,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:53,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:55,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:57,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:10:57,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:10:57,538 INFO L93 Difference]: Finished difference Result 1157 states and 1552 transitions. [2023-12-02 17:10:57,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 17:10:57,539 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 176 [2023-12-02 17:10:57,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:10:57,543 INFO L225 Difference]: With dead ends: 1157 [2023-12-02 17:10:57,543 INFO L226 Difference]: Without dead ends: 693 [2023-12-02 17:10:57,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 561 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=211, Invalid=903, Unknown=28, NotChecked=340, Total=1482 [2023-12-02 17:10:57,546 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 342 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 25 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2023-12-02 17:10:57,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 315 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 317 Invalid, 6 Unknown, 0 Unchecked, 17.5s Time] [2023-12-02 17:10:57,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2023-12-02 17:10:57,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 549. [2023-12-02 17:10:57,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 448 states have (on average 1.2566964285714286) internal successors, (563), 453 states have internal predecessors, (563), 86 states have call successors, (86), 14 states have call predecessors, (86), 14 states have return successors, (86), 81 states have call predecessors, (86), 86 states have call successors, (86) [2023-12-02 17:10:57,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 735 transitions. [2023-12-02 17:10:57,584 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 735 transitions. Word has length 176 [2023-12-02 17:10:57,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:10:57,584 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 735 transitions. [2023-12-02 17:10:57,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:10:57,585 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 735 transitions. [2023-12-02 17:10:57,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-02 17:10:57,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:10:57,586 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:10:57,612 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-02 17:10:57,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2023-12-02 17:10:57,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:10:58,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:10:58,187 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:10:58,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:10:58,188 INFO L85 PathProgramCache]: Analyzing trace with hash 785113573, now seen corresponding path program 1 times [2023-12-02 17:10:58,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:10:58,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1989297138] [2023-12-02 17:10:58,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:10:58,189 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 17:10:58,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:10:58,190 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:10:58,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:10:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:10:58,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-02 17:10:58,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:10:59,939 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 17:11:00,365 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 20 treesize of output 15 [2023-12-02 17:11:00,618 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 20 treesize of output 15 [2023-12-02 17:11:00,910 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 20 treesize of output 15 [2023-12-02 17:11:01,196 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 20 treesize of output 15 [2023-12-02 17:11:01,506 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 20 treesize of output 15 [2023-12-02 17:11:01,793 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 20 treesize of output 15 [2023-12-02 17:11:02,111 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 20 treesize of output 15 [2023-12-02 17:11:02,424 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 20 treesize of output 15 [2023-12-02 17:11:02,693 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 42 treesize of output 20 [2023-12-02 17:11:02,807 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 31 treesize of output 24 [2023-12-02 17:11:02,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 27 proven. 608 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2023-12-02 17:11:02,995 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:11:03,086 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_693 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_693) |c_~#BOOL_unsigned_char_Array_0~0.base|) (bvadd |c_~#BOOL_unsigned_char_Array_0~0.offset| (_ bv5 32)))) (_ bv0 8)))) is different from false [2023-12-02 17:11:03,131 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_693 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_691 (_ BitVec 32))) (not (= ((_ extract 7 0) (select (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base|) (bvadd (_ bv4 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|) v_ArrVal_691)) |c_~#signed_char_Array_0~0.base| v_ArrVal_693) |c_~#BOOL_unsigned_char_Array_0~0.base|) (bvadd |c_~#BOOL_unsigned_char_Array_0~0.offset| (_ bv5 32)))) (_ bv0 8)))) is different from false [2023-12-02 17:11:03,340 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_693 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_690 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_691 (_ BitVec 32))) (let ((.cse0 (select (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_690) |c_~#BOOL_unsigned_char_Array_0~0.base|)) (.cse1 (bvadd |c_~#BOOL_unsigned_char_Array_0~0.offset| (_ bv5 32)))) (or (= ((_ extract 7 0) (select .cse0 .cse1)) (_ bv0 8)) (not (= ((_ extract 7 0) (select (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse0 (bvadd (_ bv4 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|) v_ArrVal_691)) |c_~#signed_char_Array_0~0.base| v_ArrVal_693) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse1)) (_ bv0 8)))))) is different from false [2023-12-02 17:11:03,422 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:11:03,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1989297138] [2023-12-02 17:11:03,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1989297138] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:11:03,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [947366436] [2023-12-02 17:11:03,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:11:03,423 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 17:11:03,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 17:11:03,424 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 17:11:03,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2023-12-02 17:11:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:11:04,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-02 17:11:04,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:11:06,320 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 17:11:06,635 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 17:11:06,887 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 17:11:07,105 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 17:11:07,330 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 17:11:07,586 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 17:11:07,825 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 17:11:08,067 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 17:11:08,335 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 17:11:08,633 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 13 [2023-12-02 17:11:08,745 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 17:11:08,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 608 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2023-12-02 17:11:08,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:11:08,934 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_737 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) (select (select (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_737) |c_~#BOOL_unsigned_char_Array_0~0.base|) (bvadd |c_~#BOOL_unsigned_char_Array_0~0.offset| (_ bv5 32)))) (_ bv0 8)))) is different from false [2023-12-02 17:11:08,975 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_735 (_ BitVec 32)) (v_ArrVal_737 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= ((_ extract 7 0) (select (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base|) (bvadd (_ bv4 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|) v_ArrVal_735)) |c_~#signed_char_Array_0~0.base| v_ArrVal_737) |c_~#BOOL_unsigned_char_Array_0~0.base|) (bvadd |c_~#BOOL_unsigned_char_Array_0~0.offset| (_ bv5 32)))) (_ bv0 8)))) is different from false [2023-12-02 17:11:09,216 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_735 (_ BitVec 32)) (v_ArrVal_737 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_734 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_734) |c_~#BOOL_unsigned_char_Array_0~0.base|)) (.cse1 (bvadd |c_~#BOOL_unsigned_char_Array_0~0.offset| (_ bv5 32)))) (or (= ((_ extract 7 0) (select .cse0 .cse1)) (_ bv0 8)) (not (= ((_ extract 7 0) (select (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse0 (bvadd (_ bv4 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|) v_ArrVal_735)) |c_~#signed_char_Array_0~0.base| v_ArrVal_737) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse1)) (_ bv0 8)))))) is different from false [2023-12-02 17:11:09,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [947366436] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:11:09,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226698770] [2023-12-02 17:11:09,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:11:09,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:11:09,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:11:09,283 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:11:09,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-02 17:11:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:11:15,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 17:11:15,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:11:16,917 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 31 treesize of output 15 [2023-12-02 17:11:17,007 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 20 treesize of output 15 [2023-12-02 17:11:17,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-02 17:11:17,150 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:11:17,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226698770] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:11:17,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:11:17,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12, 8] total 22 [2023-12-02 17:11:17,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577399149] [2023-12-02 17:11:17,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:11:17,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 17:11:17,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:11:17,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 17:11:17,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=610, Unknown=11, NotChecked=342, Total=1122 [2023-12-02 17:11:17,153 INFO L87 Difference]: Start difference. First operand 549 states and 735 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:11:19,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:11:21,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:11:23,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:11:26,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:11:27,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:11:30,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:11:30,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:11:30,095 INFO L93 Difference]: Finished difference Result 1191 states and 1594 transitions. [2023-12-02 17:11:30,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 17:11:30,096 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 176 [2023-12-02 17:11:30,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:11:30,100 INFO L225 Difference]: With dead ends: 1191 [2023-12-02 17:11:30,100 INFO L226 Difference]: Without dead ends: 712 [2023-12-02 17:11:30,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 563 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=188, Invalid=755, Unknown=11, NotChecked=378, Total=1332 [2023-12-02 17:11:30,102 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 271 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 30 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2023-12-02 17:11:30,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 335 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 339 Invalid, 3 Unknown, 0 Unchecked, 12.7s Time] [2023-12-02 17:11:30,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2023-12-02 17:11:30,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 605. [2023-12-02 17:11:30,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 494 states have (on average 1.257085020242915) internal successors, (621), 500 states have internal predecessors, (621), 94 states have call successors, (94), 16 states have call predecessors, (94), 16 states have return successors, (94), 88 states have call predecessors, (94), 94 states have call successors, (94) [2023-12-02 17:11:30,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 809 transitions. [2023-12-02 17:11:30,148 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 809 transitions. Word has length 176 [2023-12-02 17:11:30,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:11:30,149 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 809 transitions. [2023-12-02 17:11:30,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:11:30,150 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 809 transitions. [2023-12-02 17:11:30,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-02 17:11:30,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:11:30,152 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:11:30,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-02 17:11:30,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:11:30,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2023-12-02 17:11:30,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 17:11:30,753 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:11:30,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:11:30,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1311215507, now seen corresponding path program 1 times [2023-12-02 17:11:30,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:11:30,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [571583770] [2023-12-02 17:11:30,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:11:30,754 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 17:11:30,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:11:30,755 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:11:30,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:11:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:11:31,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-02 17:11:31,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:11:32,500 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 17:11:32,980 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 20 treesize of output 15 [2023-12-02 17:11:33,258 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 20 treesize of output 15 [2023-12-02 17:11:33,559 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 20 treesize of output 15 [2023-12-02 17:11:33,838 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 20 treesize of output 15 [2023-12-02 17:11:34,140 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 20 treesize of output 15 [2023-12-02 17:11:34,450 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 20 treesize of output 15 [2023-12-02 17:11:34,757 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 20 treesize of output 15 [2023-12-02 17:11:35,041 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 20 treesize of output 15 [2023-12-02 17:11:35,294 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 30 treesize of output 14 [2023-12-02 17:11:35,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2023-12-02 17:11:35,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 27 proven. 608 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2023-12-02 17:11:35,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:11:35,801 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_812 (_ BitVec 32)) (v_ArrVal_814 (Array (_ BitVec 32) (_ BitVec 32)))) (= ((_ extract 7 0) (select (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base|) (bvadd (_ bv4 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|) v_ArrVal_812)) |c_~#signed_char_Array_0~0.base| v_ArrVal_814) |c_~#BOOL_unsigned_char_Array_0~0.base|) (bvadd |c_~#BOOL_unsigned_char_Array_0~0.offset| (_ bv5 32)))) (_ bv0 8))) is different from false [2023-12-02 17:11:35,835 WARN L854 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_812 (_ BitVec 32)) (v_ArrVal_814 (Array (_ BitVec 32) (_ BitVec 32)))) (= ((_ extract 7 0) (select (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base|) (bvadd (_ bv4 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|) v_ArrVal_812)) |c_~#signed_char_Array_0~0.base| v_ArrVal_814) |c_~#BOOL_unsigned_char_Array_0~0.base|) (bvadd |c_~#BOOL_unsigned_char_Array_0~0.offset| (_ bv5 32)))) (_ bv0 8))) |c_ULTIMATE.start_step_#t~short17#1|) is different from false [2023-12-02 17:11:35,948 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_812 (_ BitVec 32)) (v_ArrVal_814 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_811 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_811) |c_~#BOOL_unsigned_char_Array_0~0.base|)) (.cse1 (bvadd |c_~#BOOL_unsigned_char_Array_0~0.offset| (_ bv5 32)))) (or (not (= ((_ extract 7 0) (select .cse0 .cse1)) (_ bv0 8))) (= ((_ extract 7 0) (select (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse0 (bvadd (_ bv4 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|) v_ArrVal_812)) |c_~#signed_char_Array_0~0.base| v_ArrVal_814) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse1)) (_ bv0 8))))) is different from false [2023-12-02 17:11:36,029 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:11:36,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [571583770] [2023-12-02 17:11:36,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [571583770] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:11:36,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1945258865] [2023-12-02 17:11:36,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:11:36,030 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 17:11:36,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 17:11:36,031 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 17:11:36,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2023-12-02 17:11:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:11:37,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-02 17:11:37,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:11:38,842 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 17:11:39,306 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 17:11:39,634 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 17:11:39,952 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 17 treesize of output 12 [2023-12-02 17:11:40,269 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 17:11:40,560 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 17:11:40,855 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 17:11:41,173 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 17:11:41,540 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 17:11:41,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2023-12-02 17:11:42,053 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 17:11:42,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 64 proven. 608 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2023-12-02 17:11:42,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:11:42,442 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_855 (_ BitVec 32)) (v_ArrVal_814 (Array (_ BitVec 32) (_ BitVec 32)))) (= ((_ extract 7 0) (select (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base|) (bvadd (_ bv4 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|) v_ArrVal_855)) |c_~#signed_char_Array_0~0.base| v_ArrVal_814) |c_~#BOOL_unsigned_char_Array_0~0.base|) (bvadd |c_~#BOOL_unsigned_char_Array_0~0.offset| (_ bv5 32)))) (_ bv0 8))) is different from false [2023-12-02 17:11:42,479 WARN L854 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_855 (_ BitVec 32)) (v_ArrVal_814 (Array (_ BitVec 32) (_ BitVec 32)))) (= ((_ extract 7 0) (select (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base|) (bvadd (_ bv4 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|) v_ArrVal_855)) |c_~#signed_char_Array_0~0.base| v_ArrVal_814) |c_~#BOOL_unsigned_char_Array_0~0.base|) (bvadd |c_~#BOOL_unsigned_char_Array_0~0.offset| (_ bv5 32)))) (_ bv0 8))) |c_ULTIMATE.start_step_#t~short17#1|) is different from false [2023-12-02 17:11:42,631 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_855 (_ BitVec 32)) (v_ArrVal_814 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_854 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_854) |c_~#BOOL_unsigned_char_Array_0~0.base|)) (.cse1 (bvadd |c_~#BOOL_unsigned_char_Array_0~0.offset| (_ bv5 32)))) (or (= (_ bv0 8) ((_ extract 7 0) (select (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse0 (bvadd (_ bv4 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|) v_ArrVal_855)) |c_~#signed_char_Array_0~0.base| v_ArrVal_814) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse1))) (not (= ((_ extract 7 0) (select .cse0 .cse1)) (_ bv0 8)))))) is different from false [2023-12-02 17:11:42,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1945258865] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:11:42,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906786065] [2023-12-02 17:11:42,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:11:42,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:11:42,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:11:42,718 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:11:42,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-02 17:11:47,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:11:47,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 17:11:47,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:11:49,168 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 30 treesize of output 14 [2023-12-02 17:11:49,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2023-12-02 17:11:49,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-02 17:11:49,343 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:11:49,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906786065] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:11:49,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:11:49,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12, 9] total 21 [2023-12-02 17:11:49,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128762092] [2023-12-02 17:11:49,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:11:49,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 17:11:49,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:11:49,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 17:11:49,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=509, Unknown=20, NotChecked=318, Total=992 [2023-12-02 17:11:49,347 INFO L87 Difference]: Start difference. First operand 605 states and 809 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:11:52,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:11:54,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:11:56,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:11:59,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:12:01,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:12:03,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:12:05,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:12:07,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:12:09,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:12:09,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:12:09,572 INFO L93 Difference]: Finished difference Result 1197 states and 1593 transitions. [2023-12-02 17:12:09,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:12:09,573 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 176 [2023-12-02 17:12:09,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:12:09,577 INFO L225 Difference]: With dead ends: 1197 [2023-12-02 17:12:09,577 INFO L226 Difference]: Without dead ends: 662 [2023-12-02 17:12:09,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 564 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=156, Invalid=549, Unknown=21, NotChecked=330, Total=1056 [2023-12-02 17:12:09,579 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 138 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 6 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:12:09,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 454 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 511 Invalid, 7 Unknown, 0 Unchecked, 20.1s Time] [2023-12-02 17:12:09,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2023-12-02 17:12:09,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 545. [2023-12-02 17:12:09,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 445 states have (on average 1.253932584269663) internal successors, (558), 450 states have internal predecessors, (558), 84 states have call successors, (84), 15 states have call predecessors, (84), 15 states have return successors, (84), 79 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-02 17:12:09,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 726 transitions. [2023-12-02 17:12:09,632 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 726 transitions. Word has length 176 [2023-12-02 17:12:09,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:12:09,633 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 726 transitions. [2023-12-02 17:12:09,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:12:09,633 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 726 transitions. [2023-12-02 17:12:09,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-02 17:12:09,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:12:09,635 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:12:09,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-02 17:12:09,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2023-12-02 17:12:10,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:12:10,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:12:10,236 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:12:10,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:12:10,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1446077079, now seen corresponding path program 1 times [2023-12-02 17:12:10,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:12:10,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396236867] [2023-12-02 17:12:10,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:12:10,238 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 17:12:10,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:12:10,239 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:12:10,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:12:11,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:12:11,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 38 conjunts are in the unsatisfiable core [2023-12-02 17:12:11,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:12:11,620 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 17:12:12,413 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 37 treesize of output 30 [2023-12-02 17:12:13,085 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:12:13,086 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 52 treesize of output 33 [2023-12-02 17:12:13,663 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 17:12:14,105 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 17:12:14,538 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 17:12:14,998 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 17:12:15,456 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 17:12:15,976 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 17:12:16,431 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 17:12:16,995 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 17:12:17,311 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:12:17,312 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 47 treesize of output 43 [2023-12-02 17:12:17,638 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 51 treesize of output 40 [2023-12-02 17:12:18,178 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:12:18,178 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 80 treesize of output 38 [2023-12-02 17:12:18,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 104 proven. 632 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-02 17:12:18,470 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:12:19,290 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd |c_~#BOOL_unsigned_char_Array_0~0.offset| (_ bv1 32))) (.cse1 (bvadd (_ bv4 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (and (forall ((v_ArrVal_937 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 ((_ zero_extend 24) ((_ extract 7 0) (select (select (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_937) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse1))))) (or (= .cse0 (_ bv0 32)) (= (_ bv1 32) .cse0)))) (forall ((v_ArrVal_937 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_937) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= ((_ extract 7 0) (select .cse2 .cse3)) (_ bv0 8)) (= (_ bv1 32) ((_ zero_extend 24) ((_ extract 7 0) (select .cse2 .cse1))))))) (forall ((v_ArrVal_937 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_937) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (not (= ((_ extract 7 0) (select .cse4 .cse3)) (_ bv0 8))) (not (= (_ bv1 32) ((_ zero_extend 24) ((_ extract 7 0) (select .cse4 .cse1)))))))))) is different from false [2023-12-02 17:12:19,647 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd |c_~#BOOL_unsigned_char_Array_0~0.offset| (_ bv1 32))) (.cse6 (select |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base|)) (.cse1 (bvadd (_ bv4 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (and (or (let ((.cse3 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse6 .cse1 ((_ sign_extend 24) (_ bv1 8)))))) (and (forall ((v_ArrVal_937 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (store .cse3 |c_~#signed_char_Array_0~0.base| v_ArrVal_937) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (not (= ((_ zero_extend 24) ((_ extract 7 0) (select .cse0 .cse1))) (_ bv1 32))) (not (= ((_ extract 7 0) (select .cse0 .cse2)) (_ bv0 8)))))) (forall ((v_ArrVal_937 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 ((_ zero_extend 24) ((_ extract 7 0) (select (select (store .cse3 |c_~#signed_char_Array_0~0.base| v_ArrVal_937) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse1))))) (or (= .cse4 (_ bv0 32)) (= .cse4 (_ bv1 32))))) (forall ((v_ArrVal_937 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (store .cse3 |c_~#signed_char_Array_0~0.base| v_ArrVal_937) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= ((_ zero_extend 24) ((_ extract 7 0) (select .cse5 .cse1))) (_ bv1 32)) (= ((_ extract 7 0) (select .cse5 .cse2)) (_ bv0 8))))))) (not |c_ULTIMATE.start_step_#t~short19#1|)) (or (let ((.cse8 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse6 .cse1 ((_ sign_extend 24) (_ bv0 8)))))) (and (forall ((v_ArrVal_937 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (select (store .cse8 |c_~#signed_char_Array_0~0.base| v_ArrVal_937) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= ((_ zero_extend 24) ((_ extract 7 0) (select .cse7 .cse1))) (_ bv1 32)) (= ((_ extract 7 0) (select .cse7 .cse2)) (_ bv0 8))))) (forall ((v_ArrVal_937 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) (select (select (store .cse8 |c_~#signed_char_Array_0~0.base| v_ArrVal_937) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse1))))) (or (= .cse9 (_ bv1 32)) (= .cse9 (_ bv0 32))))) (forall ((v_ArrVal_937 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse10 (select (store .cse8 |c_~#signed_char_Array_0~0.base| v_ArrVal_937) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (not (= ((_ zero_extend 24) ((_ extract 7 0) (select .cse10 .cse1))) (_ bv1 32))) (not (= ((_ extract 7 0) (select .cse10 .cse2)) (_ bv0 8)))))))) |c_ULTIMATE.start_step_#t~short19#1|))) is different from false [2023-12-02 17:12:19,797 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse6 (select |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base|)) (.cse2 (bvadd |c_~#BOOL_unsigned_char_Array_0~0.offset| (_ bv1 32)))) (let ((.cse7 (= (_ bv0 8) ((_ extract 7 0) (select .cse6 .cse2)))) (.cse1 (bvadd (_ bv4 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (and (or (let ((.cse3 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse6 .cse1 ((_ sign_extend 24) (_ bv0 8)))))) (and (forall ((v_ArrVal_937 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (store .cse3 |c_~#signed_char_Array_0~0.base| v_ArrVal_937) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= ((_ zero_extend 24) ((_ extract 7 0) (select .cse0 .cse1))) (_ bv1 32)) (= ((_ extract 7 0) (select .cse0 .cse2)) (_ bv0 8))))) (forall ((v_ArrVal_937 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 ((_ zero_extend 24) ((_ extract 7 0) (select (select (store .cse3 |c_~#signed_char_Array_0~0.base| v_ArrVal_937) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse1))))) (or (= .cse4 (_ bv1 32)) (= .cse4 (_ bv0 32))))) (forall ((v_ArrVal_937 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (store .cse3 |c_~#signed_char_Array_0~0.base| v_ArrVal_937) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (not (= ((_ zero_extend 24) ((_ extract 7 0) (select .cse5 .cse1))) (_ bv1 32))) (not (= ((_ extract 7 0) (select .cse5 .cse2)) (_ bv0 8)))))))) (not .cse7)) (or .cse7 (let ((.cse9 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse6 .cse1 ((_ sign_extend 24) (_ bv1 8)))))) (and (forall ((v_ArrVal_937 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (select (store .cse9 |c_~#signed_char_Array_0~0.base| v_ArrVal_937) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (not (= ((_ zero_extend 24) ((_ extract 7 0) (select .cse8 .cse1))) (_ bv1 32))) (not (= ((_ extract 7 0) (select .cse8 .cse2)) (_ bv0 8)))))) (forall ((v_ArrVal_937 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse10 ((_ zero_extend 24) ((_ extract 7 0) (select (select (store .cse9 |c_~#signed_char_Array_0~0.base| v_ArrVal_937) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse1))))) (or (= .cse10 (_ bv0 32)) (= .cse10 (_ bv1 32))))) (forall ((v_ArrVal_937 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (select (store .cse9 |c_~#signed_char_Array_0~0.base| v_ArrVal_937) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= ((_ zero_extend 24) ((_ extract 7 0) (select .cse11 .cse1))) (_ bv1 32)) (= ((_ extract 7 0) (select .cse11 .cse2)) (_ bv0 8))))))))))) is different from false [2023-12-02 17:12:20,658 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ sign_extend 24) (_ bv1 8))) (.cse1 (bvadd (_ bv4 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse7 ((_ sign_extend 24) (_ bv0 8))) (.cse2 (bvadd |c_~#BOOL_unsigned_char_Array_0~0.offset| (_ bv1 32)))) (and (forall ((v_ArrVal_934 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_934) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (forall ((v_ArrVal_937 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse3 .cse1 .cse4)) |c_~#signed_char_Array_0~0.base| v_ArrVal_937) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= ((_ zero_extend 24) ((_ extract 7 0) (select .cse0 .cse1))) (_ bv1 32)) (= ((_ extract 7 0) (select .cse0 .cse2)) (_ bv0 8))))) (= (_ bv0 8) ((_ extract 7 0) (select .cse3 .cse2)))))) (forall ((v_ArrVal_934 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_934) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (not (= (_ bv0 8) ((_ extract 7 0) (select .cse5 .cse2)))) (forall ((v_ArrVal_937 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse5 .cse1 .cse7)) |c_~#signed_char_Array_0~0.base| v_ArrVal_937) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= ((_ zero_extend 24) ((_ extract 7 0) (select .cse6 .cse1))) (_ bv1 32)) (= ((_ extract 7 0) (select .cse6 .cse2)) (_ bv0 8)))))))) (forall ((v_ArrVal_934 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse9 (select (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_934) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (forall ((v_ArrVal_937 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse9 .cse1 .cse4)) |c_~#signed_char_Array_0~0.base| v_ArrVal_937) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (not (= ((_ zero_extend 24) ((_ extract 7 0) (select .cse8 .cse1))) (_ bv1 32))) (not (= ((_ extract 7 0) (select .cse8 .cse2)) (_ bv0 8)))))) (= (_ bv0 8) ((_ extract 7 0) (select .cse9 .cse2)))))) (forall ((v_ArrVal_934 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (select (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_934) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (forall ((v_ArrVal_937 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse10 ((_ zero_extend 24) ((_ extract 7 0) (select (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse11 .cse1 .cse4)) |c_~#signed_char_Array_0~0.base| v_ArrVal_937) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse1))))) (or (= .cse10 (_ bv1 32)) (= .cse10 (_ bv0 32))))) (= (_ bv0 8) ((_ extract 7 0) (select .cse11 .cse2)))))) (forall ((v_ArrVal_934 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse12 (select (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_934) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (not (= (_ bv0 8) ((_ extract 7 0) (select .cse12 .cse2)))) (forall ((v_ArrVal_937 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse13 ((_ zero_extend 24) ((_ extract 7 0) (select (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse12 .cse1 .cse7)) |c_~#signed_char_Array_0~0.base| v_ArrVal_937) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse1))))) (or (= .cse13 (_ bv1 32)) (= .cse13 (_ bv0 32)))))))) (forall ((v_ArrVal_934 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse15 (select (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_934) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (forall ((v_ArrVal_937 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse14 (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse15 .cse1 .cse7)) |c_~#signed_char_Array_0~0.base| v_ArrVal_937) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (not (= ((_ zero_extend 24) ((_ extract 7 0) (select .cse14 .cse1))) (_ bv1 32))) (not (= ((_ extract 7 0) (select .cse14 .cse2)) (_ bv0 8)))))) (not (= (_ bv0 8) ((_ extract 7 0) (select .cse15 .cse2))))))))) is different from false [2023-12-02 17:12:21,330 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:12:21,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396236867] [2023-12-02 17:12:21,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396236867] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:12:21,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1751819135] [2023-12-02 17:12:21,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:12:21,331 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 17:12:21,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 17:12:21,332 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 17:12:21,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2023-12-02 17:12:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:12:23,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 36 conjunts are in the unsatisfiable core [2023-12-02 17:12:23,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:12:24,004 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 17:12:24,295 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 17:12:24,817 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 21 treesize of output 20 [2023-12-02 17:12:25,409 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 17:12:25,834 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 17:12:26,230 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 25 treesize of output 18 [2023-12-02 17:12:26,659 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 17:12:27,059 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 17:12:27,455 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 25 treesize of output 18 [2023-12-02 17:12:27,831 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 17:12:28,337 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 17:12:28,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 45 [2023-12-02 17:12:29,212 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 61 treesize of output 46 [2023-12-02 17:12:30,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 48 [2023-12-02 17:12:30,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 112 proven. 608 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-12-02 17:12:30,223 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:12:30,754 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd |c_~#BOOL_unsigned_char_Array_0~0.offset| (_ bv1 32))) (.cse2 (bvadd (_ bv4 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (and (forall ((v_ArrVal_983 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_983) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (_ bv0 8) ((_ extract 7 0) (select .cse0 .cse1))) (= ((_ zero_extend 24) ((_ extract 7 0) (select .cse0 .cse2))) (_ bv1 32))))) (forall ((v_ArrVal_983 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_983) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (not (= ((_ zero_extend 24) ((_ extract 7 0) (select .cse3 .cse2))) (_ bv1 32))) (not (= (_ bv0 8) ((_ extract 7 0) (select .cse3 .cse1))))))) (forall ((v_ArrVal_983 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 ((_ zero_extend 24) ((_ extract 7 0) (select (select (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_983) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse2))))) (or (= .cse4 (_ bv0 32)) (= .cse4 (_ bv1 32))))))) is different from false [2023-12-02 17:12:31,087 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd |c_~#BOOL_unsigned_char_Array_0~0.offset| (_ bv1 32))) (.cse6 (select |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base|)) (.cse1 (bvadd (_ bv4 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (and (or (not |c_ULTIMATE.start_step_#t~short19#1|) (let ((.cse3 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse6 .cse1 ((_ sign_extend 24) (_ bv1 8)))))) (and (forall ((v_ArrVal_983 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (store .cse3 |c_~#signed_char_Array_0~0.base| v_ArrVal_983) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (not (= ((_ zero_extend 24) ((_ extract 7 0) (select .cse0 .cse1))) (_ bv1 32))) (not (= ((_ extract 7 0) (select .cse0 .cse2)) (_ bv0 8)))))) (forall ((v_ArrVal_983 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 ((_ zero_extend 24) ((_ extract 7 0) (select (select (store .cse3 |c_~#signed_char_Array_0~0.base| v_ArrVal_983) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse1))))) (or (= .cse4 (_ bv1 32)) (= .cse4 (_ bv0 32))))) (forall ((v_ArrVal_983 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (store .cse3 |c_~#signed_char_Array_0~0.base| v_ArrVal_983) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= ((_ zero_extend 24) ((_ extract 7 0) (select .cse5 .cse1))) (_ bv1 32)) (= ((_ extract 7 0) (select .cse5 .cse2)) (_ bv0 8)))))))) (or (let ((.cse8 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse6 .cse1 ((_ sign_extend 24) (_ bv0 8)))))) (and (forall ((v_ArrVal_983 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 ((_ zero_extend 24) ((_ extract 7 0) (select (select (store .cse8 |c_~#signed_char_Array_0~0.base| v_ArrVal_983) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse1))))) (or (= .cse7 (_ bv1 32)) (= .cse7 (_ bv0 32))))) (forall ((v_ArrVal_983 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse9 (select (store .cse8 |c_~#signed_char_Array_0~0.base| v_ArrVal_983) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (not (= ((_ extract 7 0) (select .cse9 .cse2)) (_ bv0 8))) (not (= ((_ zero_extend 24) ((_ extract 7 0) (select .cse9 .cse1))) (_ bv1 32)))))) (forall ((v_ArrVal_983 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse10 (select (store .cse8 |c_~#signed_char_Array_0~0.base| v_ArrVal_983) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= ((_ zero_extend 24) ((_ extract 7 0) (select .cse10 .cse1))) (_ bv1 32)) (= ((_ extract 7 0) (select .cse10 .cse2)) (_ bv0 8))))))) |c_ULTIMATE.start_step_#t~short19#1|))) is different from false [2023-12-02 17:12:33,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1751819135] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:12:33,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273371362] [2023-12-02 17:12:33,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:12:33,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:12:33,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:12:33,550 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:12:33,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-02 17:12:37,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:12:37,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-02 17:12:37,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:12:39,796 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 47 treesize of output 25 [2023-12-02 17:12:40,229 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 53 treesize of output 42 [2023-12-02 17:12:40,923 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:12:40,923 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 82 treesize of output 40 [2023-12-02 17:12:41,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 17:12:41,084 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:12:41,509 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd |c_~#BOOL_unsigned_char_Array_0~0.offset| (_ bv1 32))) (.cse1 (bvadd (_ bv4 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (and (forall ((v_ArrVal_1017 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 ((_ zero_extend 24) ((_ extract 7 0) (select (select (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_1017) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse1))))) (or (= .cse0 (_ bv1 32)) (= .cse0 (_ bv0 32))))) (forall ((v_ArrVal_1017 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_1017) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= ((_ extract 7 0) (select .cse2 .cse3)) (_ bv0 8)) (= ((_ zero_extend 24) ((_ extract 7 0) (select .cse2 .cse1))) (_ bv1 32))))) (forall ((v_ArrVal_1017 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_1017) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (not (= ((_ extract 7 0) (select .cse4 .cse3)) (_ bv0 8))) (not (= ((_ zero_extend 24) ((_ extract 7 0) (select .cse4 .cse1))) (_ bv1 32)))))))) is different from false [2023-12-02 17:12:41,828 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd |c_~#BOOL_unsigned_char_Array_0~0.offset| (_ bv1 32))) (.cse6 (select |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base|)) (.cse2 (bvadd (_ bv4 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (and (or |c_ULTIMATE.start_step_#t~short19#1| (let ((.cse1 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse6 .cse2 ((_ sign_extend 24) (_ bv0 8)))))) (and (forall ((v_ArrVal_1017 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 ((_ zero_extend 24) ((_ extract 7 0) (select (select (store .cse1 |c_~#signed_char_Array_0~0.base| v_ArrVal_1017) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse2))))) (or (= .cse0 (_ bv0 32)) (= .cse0 (_ bv1 32))))) (forall ((v_ArrVal_1017 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (store .cse1 |c_~#signed_char_Array_0~0.base| v_ArrVal_1017) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (not (= ((_ zero_extend 24) ((_ extract 7 0) (select .cse3 .cse2))) (_ bv1 32))) (not (= ((_ extract 7 0) (select .cse3 .cse4)) (_ bv0 8)))))) (forall ((v_ArrVal_1017 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (store .cse1 |c_~#signed_char_Array_0~0.base| v_ArrVal_1017) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= ((_ extract 7 0) (select .cse5 .cse4)) (_ bv0 8)) (= ((_ zero_extend 24) ((_ extract 7 0) (select .cse5 .cse2))) (_ bv1 32)))))))) (or (let ((.cse8 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse6 .cse2 ((_ sign_extend 24) (_ bv1 8)))))) (and (forall ((v_ArrVal_1017 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (select (store .cse8 |c_~#signed_char_Array_0~0.base| v_ArrVal_1017) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (not (= ((_ zero_extend 24) ((_ extract 7 0) (select .cse7 .cse2))) (_ bv1 32))) (not (= ((_ extract 7 0) (select .cse7 .cse4)) (_ bv0 8)))))) (forall ((v_ArrVal_1017 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse9 (select (store .cse8 |c_~#signed_char_Array_0~0.base| v_ArrVal_1017) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= ((_ zero_extend 24) ((_ extract 7 0) (select .cse9 .cse2))) (_ bv1 32)) (= ((_ extract 7 0) (select .cse9 .cse4)) (_ bv0 8))))) (forall ((v_ArrVal_1017 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse10 ((_ zero_extend 24) ((_ extract 7 0) (select (select (store .cse8 |c_~#signed_char_Array_0~0.base| v_ArrVal_1017) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse2))))) (or (= .cse10 (_ bv0 32)) (= .cse10 (_ bv1 32))))))) (not |c_ULTIMATE.start_step_#t~short19#1|)))) is different from false [2023-12-02 17:12:41,868 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 17:12:42,010 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:12:42,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 342 treesize of output 249 [2023-12-02 17:12:42,055 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:12:42,055 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 1 case distinctions, treesize of input 380 treesize of output 332 [2023-12-02 17:12:42,077 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:12:42,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 363 treesize of output 319 [2023-12-02 17:12:42,102 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:12:42,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 302 treesize of output 294 [2023-12-02 17:12:42,117 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:12:42,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 294 treesize of output 286 [2023-12-02 17:12:42,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 286 treesize of output 278 [2023-12-02 17:12:42,142 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:12:42,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 278 treesize of output 270 [2023-12-02 17:12:42,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 270 treesize of output 262 [2023-12-02 17:12:42,169 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:12:42,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 262 treesize of output 254 [2023-12-02 17:12:42,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-02 17:12:42,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273371362] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 17:12:42,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 17:12:42,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [21, 14, 12] total 45 [2023-12-02 17:12:42,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326959928] [2023-12-02 17:12:42,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:12:42,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 17:12:42,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:12:42,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 17:12:42,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=249, Invalid=1666, Unknown=9, NotChecked=728, Total=2652 [2023-12-02 17:12:42,629 INFO L87 Difference]: Start difference. First operand 545 states and 726 transitions. Second operand has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:12:45,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:12:47,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:12:52,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:12:55,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:12:57,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:12:58,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:13:01,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:13:01,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:13:01,614 INFO L93 Difference]: Finished difference Result 1056 states and 1404 transitions. [2023-12-02 17:13:01,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-02 17:13:01,616 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 176 [2023-12-02 17:13:01,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:13:01,620 INFO L225 Difference]: With dead ends: 1056 [2023-12-02 17:13:01,620 INFO L226 Difference]: Without dead ends: 581 [2023-12-02 17:13:01,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 718 SyntacticMatches, 4 SemanticMatches, 62 ConstructedPredicates, 8 IntricatePredicates, 1 DeprecatedPredicates, 1152 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=367, Invalid=2736, Unknown=9, NotChecked=920, Total=4032 [2023-12-02 17:13:01,623 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 296 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 14 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 518 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:13:01,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 791 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 605 Invalid, 6 Unknown, 518 Unchecked, 17.2s Time] [2023-12-02 17:13:01,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2023-12-02 17:13:01,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 557. [2023-12-02 17:13:01,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 455 states have (on average 1.2483516483516484) internal successors, (568), 460 states have internal predecessors, (568), 84 states have call successors, (84), 17 states have call predecessors, (84), 17 states have return successors, (84), 79 states have call predecessors, (84), 84 states have call successors, (84) [2023-12-02 17:13:01,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 736 transitions. [2023-12-02 17:13:01,677 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 736 transitions. Word has length 176 [2023-12-02 17:13:01,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:13:01,678 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 736 transitions. [2023-12-02 17:13:01,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:13:01,678 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 736 transitions. [2023-12-02 17:13:01,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-02 17:13:01,680 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:13:01,680 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:13:01,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2023-12-02 17:13:01,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-12-02 17:13:02,089 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:13:02,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:13:02,282 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:13:02,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:13:02,282 INFO L85 PathProgramCache]: Analyzing trace with hash -41932819, now seen corresponding path program 1 times [2023-12-02 17:13:02,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:13:02,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012087137] [2023-12-02 17:13:02,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:13:02,283 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 17:13:02,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:13:02,284 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:13:02,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 (31)] Waiting until timeout for monitored process [2023-12-02 17:13:03,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:13:03,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-02 17:13:03,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:13:03,824 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 17:13:04,287 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 26 treesize of output 25 [2023-12-02 17:13:04,858 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 30 treesize of output 23 [2023-12-02 17:13:05,237 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 30 treesize of output 23 [2023-12-02 17:13:05,638 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 30 treesize of output 23 [2023-12-02 17:13:06,028 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 30 treesize of output 23 [2023-12-02 17:13:06,426 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 30 treesize of output 23 [2023-12-02 17:13:06,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2023-12-02 17:13:07,210 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 30 treesize of output 23 [2023-12-02 17:13:07,663 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 30 treesize of output 23 [2023-12-02 17:13:08,059 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:13:08,060 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 40 treesize of output 27 [2023-12-02 17:13:08,202 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 29 treesize of output 22 [2023-12-02 17:13:08,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 79 proven. 614 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2023-12-02 17:13:08,393 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:13:08,488 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1061 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 8) ((_ extract 7 0) (select (select (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_1061) |c_~#BOOL_unsigned_char_Array_0~0.base|) (bvadd (_ bv2 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|))))) is different from false [2023-12-02 17:13:08,528 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1061 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1060 (_ BitVec 32))) (= ((_ extract 7 0) (select (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base|) (bvadd (_ bv4 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|) v_ArrVal_1060)) |c_~#signed_char_Array_0~0.base| v_ArrVal_1061) |c_~#BOOL_unsigned_char_Array_0~0.base|) (bvadd (_ bv2 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (_ bv0 8))) is different from false [2023-12-02 17:13:08,576 WARN L854 $PredicateComparison]: unable to prove that (or |c_ULTIMATE.start_step_#t~short14#1| (forall ((v_ArrVal_1061 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1060 (_ BitVec 32))) (= ((_ extract 7 0) (select (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base|) (bvadd (_ bv4 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|) v_ArrVal_1060)) |c_~#signed_char_Array_0~0.base| v_ArrVal_1061) |c_~#BOOL_unsigned_char_Array_0~0.base|) (bvadd (_ bv2 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (_ bv0 8)))) is different from false [2023-12-02 17:13:08,660 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1061 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1060 (_ BitVec 32)) (v_ArrVal_1058 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_1058) |c_~#BOOL_unsigned_char_Array_0~0.base|)) (.cse1 (bvadd (_ bv2 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (or (= ((_ extract 7 0) (select (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse0 (bvadd (_ bv4 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|) v_ArrVal_1060)) |c_~#signed_char_Array_0~0.base| v_ArrVal_1061) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse1)) (_ bv0 8)) (not (= ((_ extract 7 0) (select .cse0 .cse1)) (_ bv0 8)))))) is different from false [2023-12-02 17:13:08,728 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:13:08,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012087137] [2023-12-02 17:13:08,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2012087137] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:13:08,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [873107754] [2023-12-02 17:13:08,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:13:08,728 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 17:13:08,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 17:13:08,729 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 17:13:08,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2023-12-02 17:13:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:13:10,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 30 conjunts are in the unsatisfiable core [2023-12-02 17:13:10,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:13:11,317 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 17:13:11,812 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 21 treesize of output 20 [2023-12-02 17:13:12,392 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 25 treesize of output 18 [2023-12-02 17:13:12,795 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 25 treesize of output 18 [2023-12-02 17:13:13,196 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 17:13:13,589 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 17:13:13,980 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 25 treesize of output 18 [2023-12-02 17:13:14,381 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 17:13:14,730 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 17:13:15,201 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 17:13:15,663 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 40 treesize of output 27 [2023-12-02 17:13:15,819 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 33 treesize of output 24 [2023-12-02 17:13:16,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 112 proven. 608 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2023-12-02 17:13:16,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:13:16,399 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1104 (_ BitVec 32)) (v_ArrVal_1105 (Array (_ BitVec 32) (_ BitVec 32)))) (= ((_ extract 7 0) (select (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store (select |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base|) (bvadd (_ bv4 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|) v_ArrVal_1104)) |c_~#signed_char_Array_0~0.base| v_ArrVal_1105) |c_~#BOOL_unsigned_char_Array_0~0.base|) (bvadd (_ bv2 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (_ bv0 8))) is different from false [2023-12-02 17:13:16,662 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1104 (_ BitVec 32)) (v_ArrVal_1105 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1102 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_1102) |c_~#BOOL_unsigned_char_Array_0~0.base|)) (.cse1 (bvadd (_ bv2 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (or (= ((_ extract 7 0) (select (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse0 (bvadd (_ bv4 32) |c_~#BOOL_unsigned_char_Array_0~0.offset|) v_ArrVal_1104)) |c_~#signed_char_Array_0~0.base| v_ArrVal_1105) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse1)) (_ bv0 8)) (not (= ((_ extract 7 0) (select .cse0 .cse1)) (_ bv0 8)))))) is different from false [2023-12-02 17:13:16,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [873107754] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:13:16,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332872914] [2023-12-02 17:13:16,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:13:16,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:13:16,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:13:16,746 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:13:16,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-02 17:13:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:13:23,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 17:13:23,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:13:24,880 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 30 treesize of output 14 [2023-12-02 17:13:24,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2023-12-02 17:13:25,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-02 17:13:25,202 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:13:25,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332872914] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:13:25,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:13:25,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13, 10] total 27 [2023-12-02 17:13:25,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115803877] [2023-12-02 17:13:25,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:13:25,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 17:13:25,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:13:25,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 17:13:25,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=853, Unknown=29, NotChecked=402, Total=1482 [2023-12-02 17:13:25,205 INFO L87 Difference]: Start difference. First operand 557 states and 736 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:13:28,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:13:30,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:13:31,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:13:34,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:13:36,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:13:37,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:13:37,370 INFO L93 Difference]: Finished difference Result 1124 states and 1479 transitions. [2023-12-02 17:13:37,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:13:37,371 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 176 [2023-12-02 17:13:37,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:13:37,376 INFO L225 Difference]: With dead ends: 1124 [2023-12-02 17:13:37,376 INFO L226 Difference]: Without dead ends: 637 [2023-12-02 17:13:37,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 596 GetRequests, 558 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=210, Invalid=907, Unknown=29, NotChecked=414, Total=1560 [2023-12-02 17:13:37,379 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 136 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:13:37,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 406 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 591 Invalid, 3 Unknown, 0 Unchecked, 12.0s Time] [2023-12-02 17:13:37,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2023-12-02 17:13:37,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 356. [2023-12-02 17:13:37,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 288 states have (on average 1.2465277777777777) internal successors, (359), 289 states have internal predecessors, (359), 56 states have call successors, (56), 11 states have call predecessors, (56), 11 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-02 17:13:37,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 471 transitions. [2023-12-02 17:13:37,407 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 471 transitions. Word has length 176 [2023-12-02 17:13:37,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:13:37,408 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 471 transitions. [2023-12-02 17:13:37,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 6 states have internal predecessors, (64), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:13:37,408 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 471 transitions. [2023-12-02 17:13:37,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-02 17:13:37,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:13:37,410 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:13:37,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-12-02 17:13:37,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 (31)] Ended with exit code 0 [2023-12-02 17:13:37,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2023-12-02 17:13:38,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 17:13:38,011 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:13:38,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:13:38,011 INFO L85 PathProgramCache]: Analyzing trace with hash 513337923, now seen corresponding path program 1 times [2023-12-02 17:13:38,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:13:38,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1053194292] [2023-12-02 17:13:38,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:13:38,012 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 17:13:38,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:13:38,013 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:13:38,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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)] Waiting until timeout for monitored process [2023-12-02 17:13:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:13:38,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:13:38,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:13:38,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-02 17:13:38,564 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:13:38,564 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:13:38,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1053194292] [2023-12-02 17:13:38,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1053194292] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:13:38,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:13:38,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:13:38,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766587781] [2023-12-02 17:13:38,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:13:38,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:13:38,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:13:38,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:13:38,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:13:38,567 INFO L87 Difference]: Start difference. First operand 356 states and 471 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:13:38,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:13:38,708 INFO L93 Difference]: Finished difference Result 654 states and 866 transitions. [2023-12-02 17:13:38,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 17:13:38,708 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 177 [2023-12-02 17:13:38,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:13:38,712 INFO L225 Difference]: With dead ends: 654 [2023-12-02 17:13:38,712 INFO L226 Difference]: Without dead ends: 368 [2023-12-02 17:13:38,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 17:13:38,713 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 24 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:13:38,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 575 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:13:38,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2023-12-02 17:13:38,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 362. [2023-12-02 17:13:38,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 294 states have (on average 1.2414965986394557) internal successors, (365), 295 states have internal predecessors, (365), 56 states have call successors, (56), 11 states have call predecessors, (56), 11 states have return successors, (56), 55 states have call predecessors, (56), 56 states have call successors, (56) [2023-12-02 17:13:38,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 477 transitions. [2023-12-02 17:13:38,738 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 477 transitions. Word has length 177 [2023-12-02 17:13:38,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:13:38,739 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 477 transitions. [2023-12-02 17:13:38,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:13:38,739 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 477 transitions. [2023-12-02 17:13:38,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-02 17:13:38,740 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:13:38,740 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:13:38,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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)] Ended with exit code 0 [2023-12-02 17:13:38,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:13:38,941 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:13:38,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:13:38,941 INFO L85 PathProgramCache]: Analyzing trace with hash -938003672, now seen corresponding path program 1 times [2023-12-02 17:13:38,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:13:38,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [558063376] [2023-12-02 17:13:38,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:13:38,942 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 17:13:38,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:13:38,943 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:13:38,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 (35)] Waiting until timeout for monitored process [2023-12-02 17:13:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:13:40,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-02 17:13:40,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:13:41,354 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 17:13:42,076 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 31 treesize of output 24 [2023-12-02 17:13:42,466 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 31 treesize of output 24 [2023-12-02 17:13:42,813 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 31 treesize of output 24 [2023-12-02 17:13:43,227 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 31 [2023-12-02 17:13:43,540 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 48 treesize of output 37 [2023-12-02 17:13:44,181 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:13:44,182 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 88 treesize of output 40 [2023-12-02 17:13:44,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 357 proven. 192 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2023-12-02 17:13:44,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:13:44,695 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1204 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_1204) |c_~#signed_char_Array_0~0.base|))) (= ((_ sign_extend 24) ((_ extract 7 0) (select .cse0 (bvadd (_ bv2 32) |c_~#signed_char_Array_0~0.offset|)))) ((_ sign_extend 24) ((_ extract 7 0) (select .cse0 (bvadd (_ bv4 32) |c_~#signed_char_Array_0~0.offset|))))))) is different from false [2023-12-02 17:13:44,888 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 17:13:44,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [558063376] [2023-12-02 17:13:44,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [558063376] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:13:44,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [184314842] [2023-12-02 17:13:44,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:13:44,889 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 17:13:44,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 17:13:44,890 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 17:13:44,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2023-12-02 17:13:47,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:13:47,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-02 17:13:47,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:13:48,888 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 17:13:49,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19 [2023-12-02 17:13:50,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19 [2023-12-02 17:13:50,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19 [2023-12-02 17:13:51,212 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 17:13:51,579 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 17:13:52,705 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 69 treesize of output 41 [2023-12-02 17:13:52,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 383 proven. 180 refuted. 0 times theorem prover too weak. 449 trivial. 0 not checked. [2023-12-02 17:13:52,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:13:53,137 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1240 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_1240) |c_~#signed_char_Array_0~0.base|))) (let ((.cse0 ((_ sign_extend 24) ((_ extract 7 0) (select .cse1 (bvadd (_ bv2 32) |c_~#signed_char_Array_0~0.offset|)))))) (or (bvsge (_ bv4294967286 32) .cse0) (= ((_ sign_extend 24) ((_ extract 7 0) (select .cse1 (bvadd (_ bv4 32) |c_~#signed_char_Array_0~0.offset|)))) .cse0))))) is different from false [2023-12-02 17:13:53,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [184314842] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:13:53,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424213195] [2023-12-02 17:13:53,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:13:53,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:13:53,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:13:53,396 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:13:53,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-02 17:14:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:14:06,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-02 17:14:06,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:14:07,697 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 21 treesize of output 21 [2023-12-02 17:14:07,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19 [2023-12-02 17:14:08,994 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 17:14:08,994 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 78 treesize of output 36 [2023-12-02 17:14:09,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-12-02 17:14:09,015 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:14:09,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424213195] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:14:09,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:14:09,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16, 15] total 34 [2023-12-02 17:14:09,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738696204] [2023-12-02 17:14:09,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:14:09,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 17:14:09,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 17:14:09,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 17:14:09,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1428, Unknown=2, NotChecked=158, Total=1806 [2023-12-02 17:14:09,017 INFO L87 Difference]: Start difference. First operand 362 states and 477 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:14:11,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:14:16,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:14:18,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:14:20,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:14:22,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:14:24,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:14:26,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:14:28,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:14:30,929 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:14:32,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:14:38,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:14:40,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:14:43,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:14:44,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 17:14:44,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:14:44,468 INFO L93 Difference]: Finished difference Result 780 states and 1003 transitions. [2023-12-02 17:14:44,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-02 17:14:44,469 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 179 [2023-12-02 17:14:44,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:14:44,473 INFO L225 Difference]: With dead ends: 780 [2023-12-02 17:14:44,473 INFO L226 Difference]: Without dead ends: 778 [2023-12-02 17:14:44,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 568 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1328 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=559, Invalid=3479, Unknown=2, NotChecked=250, Total=4290 [2023-12-02 17:14:44,477 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 373 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 117 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.5s IncrementalHoareTripleChecker+Time [2023-12-02 17:14:44,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 711 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 800 Invalid, 11 Unknown, 0 Unchecked, 33.5s Time] [2023-12-02 17:14:44,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2023-12-02 17:14:44,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 568. [2023-12-02 17:14:44,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 492 states have (on average 1.2642276422764227) internal successors, (622), 494 states have internal predecessors, (622), 62 states have call successors, (62), 13 states have call predecessors, (62), 13 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-02 17:14:44,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 746 transitions. [2023-12-02 17:14:44,529 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 746 transitions. Word has length 179 [2023-12-02 17:14:44,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:14:44,529 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 746 transitions. [2023-12-02 17:14:44,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-12-02 17:14:44,530 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 746 transitions. [2023-12-02 17:14:44,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-02 17:14:44,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:14:44,531 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:14:44,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 (35)] Ended with exit code 0 [2023-12-02 17:14:44,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (36)] Ended with exit code 0 [2023-12-02 17:14:44,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-12-02 17:14:45,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:14:45,132 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:14:45,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:14:45,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1112980326, now seen corresponding path program 1 times [2023-12-02 17:14:45,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 17:14:45,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473044475] [2023-12-02 17:14:45,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:14:45,134 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 17:14:45,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 17:14:45,135 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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 17:14:45,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0135d73e-7f44-436f-927b-d8ce750574ac/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