./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-49.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-49.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje --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 06bb6f3bbb0c6ee3bc73b3f1732ad2bc217c179634d5fa3dbf744e010ef897a1 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 04:48:38,863 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 04:48:38,979 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 04:48:38,985 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 04:48:38,985 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 04:48:39,017 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 04:48:39,018 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 04:48:39,018 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 04:48:39,019 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 04:48:39,020 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 04:48:39,020 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 04:48:39,021 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 04:48:39,021 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 04:48:39,022 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 04:48:39,022 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 04:48:39,023 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 04:48:39,023 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 04:48:39,024 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 04:48:39,024 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 04:48:39,025 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 04:48:39,026 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 04:48:39,026 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 04:48:39,027 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 04:48:39,028 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 04:48:39,028 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 04:48:39,029 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 04:48:39,030 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 04:48:39,030 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 04:48:39,030 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 04:48:39,031 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 04:48:39,031 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 04:48:39,032 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 04:48:39,032 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 04:48:39,033 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 04:48:39,033 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 04:48:39,034 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 04:48:39,034 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 04:48:39,035 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 04:48:39,035 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:48:39,036 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 04:48:39,036 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 04:48:39,037 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 04:48:39,037 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 04:48:39,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 04:48:39,038 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 04:48:39,038 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 04:48:39,039 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 04:48:39,039 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_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06bb6f3bbb0c6ee3bc73b3f1732ad2bc217c179634d5fa3dbf744e010ef897a1 [2024-11-09 04:48:39,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 04:48:39,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 04:48:39,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 04:48:39,391 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 04:48:39,392 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 04:48:39,393 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-49.i Unable to find full path for "g++" [2024-11-09 04:48:41,928 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 04:48:42,195 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 04:48:42,195 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-49.i [2024-11-09 04:48:42,208 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/data/69fd0a0f8/b527d9c85fd8492fb34ced917b4bd8f3/FLAGb6dc9e315 [2024-11-09 04:48:42,238 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/data/69fd0a0f8/b527d9c85fd8492fb34ced917b4bd8f3 [2024-11-09 04:48:42,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 04:48:42,246 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 04:48:42,248 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 04:48:42,248 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 04:48:42,256 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 04:48:42,257 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:48:42" (1/1) ... [2024-11-09 04:48:42,259 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2361a15e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:42, skipping insertion in model container [2024-11-09 04:48:42,259 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:48:42" (1/1) ... [2024-11-09 04:48:42,306 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 04:48:42,524 WARN L250 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_24e9ecb9-aea4-41da-a7c0-277c79afe552/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-49.i[916,929] [2024-11-09 04:48:42,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:48:42,645 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 04:48:42,660 WARN L250 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_24e9ecb9-aea4-41da-a7c0-277c79afe552/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-49.i[916,929] [2024-11-09 04:48:42,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:48:42,747 INFO L204 MainTranslator]: Completed translation [2024-11-09 04:48:42,748 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:42 WrapperNode [2024-11-09 04:48:42,748 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 04:48:42,750 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 04:48:42,750 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 04:48:42,750 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 04:48:42,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:42" (1/1) ... [2024-11-09 04:48:42,793 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:42" (1/1) ... [2024-11-09 04:48:42,893 INFO L138 Inliner]: procedures = 30, calls = 192, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 657 [2024-11-09 04:48:42,894 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 04:48:42,895 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 04:48:42,895 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 04:48:42,895 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 04:48:42,911 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:42" (1/1) ... [2024-11-09 04:48:42,911 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:42" (1/1) ... [2024-11-09 04:48:42,927 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:42" (1/1) ... [2024-11-09 04:48:42,930 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:42" (1/1) ... [2024-11-09 04:48:42,990 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:42" (1/1) ... [2024-11-09 04:48:43,005 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:42" (1/1) ... [2024-11-09 04:48:43,013 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:42" (1/1) ... [2024-11-09 04:48:43,021 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:42" (1/1) ... [2024-11-09 04:48:43,039 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 04:48:43,044 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 04:48:43,044 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 04:48:43,045 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 04:48:43,046 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:42" (1/1) ... [2024-11-09 04:48:43,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:48:43,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:48:43,110 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 04:48:43,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 04:48:43,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 04:48:43,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2024-11-09 04:48:43,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-09 04:48:43,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2024-11-09 04:48:43,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 04:48:43,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2024-11-09 04:48:43,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 04:48:43,160 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 04:48:43,161 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 04:48:43,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 04:48:43,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 04:48:43,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 04:48:43,433 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 04:48:43,436 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 04:48:44,590 INFO L? ?]: Removed 216 outVars from TransFormulas that were not future-live. [2024-11-09 04:48:44,591 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 04:48:45,770 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 04:48:45,771 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 04:48:45,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:48:45 BoogieIcfgContainer [2024-11-09 04:48:45,772 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 04:48:45,774 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 04:48:45,774 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 04:48:45,780 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 04:48:45,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:48:42" (1/3) ... [2024-11-09 04:48:45,781 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3844d46d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:48:45, skipping insertion in model container [2024-11-09 04:48:45,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:42" (2/3) ... [2024-11-09 04:48:45,782 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3844d46d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:48:45, skipping insertion in model container [2024-11-09 04:48:45,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:48:45" (3/3) ... [2024-11-09 04:48:45,784 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-49.i [2024-11-09 04:48:45,802 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 04:48:45,802 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 04:48:45,888 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 04:48:45,898 INFO L333 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, 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;@a2456c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 04:48:45,899 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 04:48:45,903 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-09 04:48:45,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-09 04:48:45,913 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:48:45,915 INFO L215 NwaCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:48:45,915 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:48:45,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:48:45,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1269914966, now seen corresponding path program 1 times [2024-11-09 04:48:45,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:48:45,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118848620] [2024-11-09 04:48:45,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:48:45,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:48:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 04:48:48,501 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 04:48:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 04:48:50,747 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-09 04:48:50,750 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 04:48:50,752 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-09 04:48:50,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 04:48:50,760 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-09 04:48:50,825 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 04:48:50,829 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 04:48:50 BoogieIcfgContainer [2024-11-09 04:48:50,830 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 04:48:50,832 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 04:48:50,832 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 04:48:50,833 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 04:48:50,833 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:48:45" (3/4) ... [2024-11-09 04:48:50,837 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-09 04:48:50,838 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 04:48:50,840 INFO L158 Benchmark]: Toolchain (without parser) took 8593.65ms. Allocated memory was 146.8MB in the beginning and 383.8MB in the end (delta: 237.0MB). Free memory was 108.8MB in the beginning and 129.1MB in the end (delta: -20.3MB). Peak memory consumption was 218.4MB. Max. memory is 16.1GB. [2024-11-09 04:48:50,840 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 146.8MB. Free memory is still 86.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 04:48:50,841 INFO L158 Benchmark]: CACSL2BoogieTranslator took 500.98ms. Allocated memory is still 146.8MB. Free memory was 108.8MB in the beginning and 89.0MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-09 04:48:50,843 INFO L158 Benchmark]: Boogie Procedure Inliner took 144.40ms. Allocated memory is still 146.8MB. Free memory was 89.0MB in the beginning and 83.4MB in the end (delta: 5.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-09 04:48:50,843 INFO L158 Benchmark]: Boogie Preprocessor took 148.67ms. Allocated memory is still 146.8MB. Free memory was 83.4MB in the beginning and 78.9MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 04:48:50,845 INFO L158 Benchmark]: RCFGBuilder took 2727.81ms. Allocated memory was 146.8MB in the beginning and 199.2MB in the end (delta: 52.4MB). Free memory was 78.9MB in the beginning and 126.3MB in the end (delta: -47.4MB). Peak memory consumption was 75.7MB. Max. memory is 16.1GB. [2024-11-09 04:48:50,847 INFO L158 Benchmark]: TraceAbstraction took 5055.89ms. Allocated memory was 199.2MB in the beginning and 383.8MB in the end (delta: 184.5MB). Free memory was 126.3MB in the beginning and 130.1MB in the end (delta: -3.8MB). Peak memory consumption was 182.0MB. Max. memory is 16.1GB. [2024-11-09 04:48:50,848 INFO L158 Benchmark]: Witness Printer took 6.43ms. Allocated memory is still 383.8MB. Free memory was 130.1MB in the beginning and 129.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 04:48:50,851 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 146.8MB. Free memory is still 86.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 500.98ms. Allocated memory is still 146.8MB. Free memory was 108.8MB in the beginning and 89.0MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 144.40ms. Allocated memory is still 146.8MB. Free memory was 89.0MB in the beginning and 83.4MB in the end (delta: 5.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 148.67ms. Allocated memory is still 146.8MB. Free memory was 83.4MB in the beginning and 78.9MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 2727.81ms. Allocated memory was 146.8MB in the beginning and 199.2MB in the end (delta: 52.4MB). Free memory was 78.9MB in the beginning and 126.3MB in the end (delta: -47.4MB). Peak memory consumption was 75.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5055.89ms. Allocated memory was 199.2MB in the beginning and 383.8MB in the end (delta: 184.5MB). Free memory was 126.3MB in the beginning and 130.1MB in the end (delta: -3.8MB). Peak memory consumption was 182.0MB. Max. memory is 16.1GB. * Witness Printer took 6.43ms. Allocated memory is still 383.8MB. Free memory was 130.1MB in the beginning and 129.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 67, overapproximation of shiftRight at line 55. Possible FailurePath: [L36] unsigned char isInitial = 0; [L37-L50] struct WrapperStruct00 WrapperStruct00 = { 4, 1000000000000000.4, 1000.2, 256, 4, 10, 128, -2, 0, 0, 0, 1 }; [L112] isInitial = 1 [L113] FCALL initially() [L114] COND TRUE 1 [L115] FCALL updateLastVariables() [L116] CALL updateVariables() [L82] WrapperStruct00.var_1_2 = __VERIFIER_nondet_float() [L83] EXPR WrapperStruct00.var_1_2 [L83] EXPR WrapperStruct00.var_1_2 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_2 <= -1.0e-20F [L83] EXPR (WrapperStruct00.var_1_2 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_2 <= -1.0e-20F) || (WrapperStruct00.var_1_2 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_2 >= 1.0e-20F ) [L83] EXPR WrapperStruct00.var_1_2 [L83] EXPR WrapperStruct00.var_1_2 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_2 >= 1.0e-20F [L83] EXPR WrapperStruct00.var_1_2 [L83] EXPR WrapperStruct00.var_1_2 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_2 >= 1.0e-20F [L83] EXPR (WrapperStruct00.var_1_2 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_2 <= -1.0e-20F) || (WrapperStruct00.var_1_2 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_2 >= 1.0e-20F ) VAL [WrapperStruct00={4:0}, isInitial=1] [L83] CALL assume_abort_if_not((WrapperStruct00.var_1_2 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_2 <= -1.0e-20F) || (WrapperStruct00.var_1_2 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_2 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L83] RET assume_abort_if_not((WrapperStruct00.var_1_2 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_2 <= -1.0e-20F) || (WrapperStruct00.var_1_2 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_2 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, isInitial=1] [L84] WrapperStruct00.var_1_3 = __VERIFIER_nondet_float() [L85] EXPR WrapperStruct00.var_1_3 [L85] EXPR WrapperStruct00.var_1_3 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_3 <= -1.0e-20F [L85] EXPR (WrapperStruct00.var_1_3 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_3 <= -1.0e-20F) || (WrapperStruct00.var_1_3 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_3 >= 1.0e-20F ) [L85] EXPR WrapperStruct00.var_1_3 [L85] EXPR WrapperStruct00.var_1_3 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_3 >= 1.0e-20F [L85] EXPR WrapperStruct00.var_1_3 [L85] EXPR WrapperStruct00.var_1_3 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_3 >= 1.0e-20F [L85] EXPR (WrapperStruct00.var_1_3 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_3 <= -1.0e-20F) || (WrapperStruct00.var_1_3 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_3 >= 1.0e-20F ) VAL [WrapperStruct00={4:0}, isInitial=1] [L85] CALL assume_abort_if_not((WrapperStruct00.var_1_3 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_3 <= -1.0e-20F) || (WrapperStruct00.var_1_3 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_3 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L85] RET assume_abort_if_not((WrapperStruct00.var_1_3 >= -922337.2036854776000e+13F && WrapperStruct00.var_1_3 <= -1.0e-20F) || (WrapperStruct00.var_1_3 <= 9223372.036854776000e+12F && WrapperStruct00.var_1_3 >= 1.0e-20F )) VAL [WrapperStruct00={4:0}, isInitial=1] [L86] WrapperStruct00.var_1_4 = __VERIFIER_nondet_ushort() [L87] EXPR WrapperStruct00.var_1_4 VAL [WrapperStruct00={4:0}, isInitial=1] [L87] CALL assume_abort_if_not(WrapperStruct00.var_1_4 >= 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L87] RET assume_abort_if_not(WrapperStruct00.var_1_4 >= 0) VAL [WrapperStruct00={4:0}, isInitial=1] [L88] EXPR WrapperStruct00.var_1_4 VAL [WrapperStruct00={4:0}, isInitial=1] [L88] CALL assume_abort_if_not(WrapperStruct00.var_1_4 <= 65534) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L88] RET assume_abort_if_not(WrapperStruct00.var_1_4 <= 65534) VAL [WrapperStruct00={4:0}, isInitial=1] [L89] WrapperStruct00.var_1_5 = __VERIFIER_nondet_ushort() [L90] EXPR WrapperStruct00.var_1_5 VAL [WrapperStruct00={4:0}, isInitial=1] [L90] CALL assume_abort_if_not(WrapperStruct00.var_1_5 >= 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L90] RET assume_abort_if_not(WrapperStruct00.var_1_5 >= 0) VAL [WrapperStruct00={4:0}, isInitial=1] [L91] EXPR WrapperStruct00.var_1_5 VAL [WrapperStruct00={4:0}, isInitial=1] [L91] CALL assume_abort_if_not(WrapperStruct00.var_1_5 <= 65534) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L91] RET assume_abort_if_not(WrapperStruct00.var_1_5 <= 65534) VAL [WrapperStruct00={4:0}, isInitial=1] [L92] WrapperStruct00.var_1_6 = __VERIFIER_nondet_ushort() [L93] EXPR WrapperStruct00.var_1_6 VAL [WrapperStruct00={4:0}, isInitial=1] [L93] CALL assume_abort_if_not(WrapperStruct00.var_1_6 >= 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L93] RET assume_abort_if_not(WrapperStruct00.var_1_6 >= 0) VAL [WrapperStruct00={4:0}, isInitial=1] [L94] EXPR WrapperStruct00.var_1_6 VAL [WrapperStruct00={4:0}, isInitial=1] [L94] CALL assume_abort_if_not(WrapperStruct00.var_1_6 <= 65534) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L94] RET assume_abort_if_not(WrapperStruct00.var_1_6 <= 65534) VAL [WrapperStruct00={4:0}, isInitial=1] [L95] WrapperStruct00.var_1_9 = __VERIFIER_nondet_short() [L96] EXPR WrapperStruct00.var_1_9 VAL [WrapperStruct00={4:0}, isInitial=1] [L96] CALL assume_abort_if_not(WrapperStruct00.var_1_9 >= -32766) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L96] RET assume_abort_if_not(WrapperStruct00.var_1_9 >= -32766) VAL [WrapperStruct00={4:0}, isInitial=1] [L97] EXPR WrapperStruct00.var_1_9 VAL [WrapperStruct00={4:0}, isInitial=1] [L97] CALL assume_abort_if_not(WrapperStruct00.var_1_9 <= 32766) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L97] RET assume_abort_if_not(WrapperStruct00.var_1_9 <= 32766) VAL [WrapperStruct00={4:0}, isInitial=1] [L98] WrapperStruct00.var_1_11 = __VERIFIER_nondet_uchar() [L99] EXPR WrapperStruct00.var_1_11 VAL [WrapperStruct00={4:0}, isInitial=1] [L99] CALL assume_abort_if_not(WrapperStruct00.var_1_11 >= 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L99] RET assume_abort_if_not(WrapperStruct00.var_1_11 >= 0) VAL [WrapperStruct00={4:0}, isInitial=1] [L100] EXPR WrapperStruct00.var_1_11 VAL [WrapperStruct00={4:0}, isInitial=1] [L100] CALL assume_abort_if_not(WrapperStruct00.var_1_11 <= 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L100] RET assume_abort_if_not(WrapperStruct00.var_1_11 <= 0) VAL [WrapperStruct00={4:0}, isInitial=1] [L101] WrapperStruct00.var_1_12 = __VERIFIER_nondet_uchar() [L102] EXPR WrapperStruct00.var_1_12 VAL [WrapperStruct00={4:0}, isInitial=1] [L102] CALL assume_abort_if_not(WrapperStruct00.var_1_12 >= 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L102] RET assume_abort_if_not(WrapperStruct00.var_1_12 >= 0) VAL [WrapperStruct00={4:0}, isInitial=1] [L103] EXPR WrapperStruct00.var_1_12 VAL [WrapperStruct00={4:0}, isInitial=1] [L103] CALL assume_abort_if_not(WrapperStruct00.var_1_12 <= 0) VAL [WrapperStruct00={4:0}, \old(cond)=1, isInitial=1] [L20] COND FALSE !(!cond) [L103] RET assume_abort_if_not(WrapperStruct00.var_1_12 <= 0) VAL [WrapperStruct00={4:0}, isInitial=1] [L116] RET updateVariables() [L117] CALL step() [L54] EXPR WrapperStruct00.var_1_9 [L54] EXPR ((WrapperStruct00.var_1_9) < 0 ) ? -(WrapperStruct00.var_1_9) : (WrapperStruct00.var_1_9) [L54] EXPR WrapperStruct00.var_1_9 [L54] EXPR ((WrapperStruct00.var_1_9) < 0 ) ? -(WrapperStruct00.var_1_9) : (WrapperStruct00.var_1_9) [L54] WrapperStruct00.var_1_8 = ((((WrapperStruct00.var_1_9) < 0 ) ? -(WrapperStruct00.var_1_9) : (WrapperStruct00.var_1_9))) [L55] EXPR WrapperStruct00.var_1_4 [L55] EXPR 50 >> WrapperStruct00.var_1_4 [L55] EXPR WrapperStruct00.var_1_8 [L55] COND FALSE !((50 >> WrapperStruct00.var_1_4) <= WrapperStruct00.var_1_8) [L58] EXPR WrapperStruct00.var_1_11 [L58] WrapperStruct00.var_1_10 = (! WrapperStruct00.var_1_11) [L60] EXPR WrapperStruct00.var_1_12 [L60] COND TRUE ! WrapperStruct00.var_1_12 [L61] EXPR WrapperStruct00.var_1_4 [L61] EXPR WrapperStruct00.var_1_6 [L61] EXPR WrapperStruct00.var_1_8 [L61] EXPR ((WrapperStruct00.var_1_6) < (WrapperStruct00.var_1_8)) ? (WrapperStruct00.var_1_6) : (WrapperStruct00.var_1_8) [L61] EXPR WrapperStruct00.var_1_8 [L61] EXPR ((WrapperStruct00.var_1_6) < (WrapperStruct00.var_1_8)) ? (WrapperStruct00.var_1_6) : (WrapperStruct00.var_1_8) [L61] COND TRUE WrapperStruct00.var_1_4 >= ((((WrapperStruct00.var_1_6) < (WrapperStruct00.var_1_8)) ? (WrapperStruct00.var_1_6) : (WrapperStruct00.var_1_8))) [L62] EXPR WrapperStruct00.var_1_10 [L62] EXPR WrapperStruct00.var_1_10 && WrapperStruct00.var_1_11 [L62] EXPR WrapperStruct00.var_1_11 [L62] EXPR WrapperStruct00.var_1_10 && WrapperStruct00.var_1_11 [L62] WrapperStruct00.var_1_13 = (WrapperStruct00.var_1_10 && WrapperStruct00.var_1_11) [L67] EXPR WrapperStruct00.var_1_2 [L67] COND TRUE WrapperStruct00.var_1_2 >= 64.5f [L68] EXPR WrapperStruct00.var_1_2 [L68] EXPR WrapperStruct00.var_1_3 [L68] COND TRUE WrapperStruct00.var_1_2 >= WrapperStruct00.var_1_3 [L69] EXPR WrapperStruct00.var_1_4 [L69] EXPR WrapperStruct00.var_1_5 [L69] EXPR WrapperStruct00.var_1_6 [L69] EXPR ((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6) [L69] EXPR WrapperStruct00.var_1_5 [L69] EXPR ((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6) [L69] EXPR ((WrapperStruct00.var_1_4) > (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6)))) [L69] EXPR WrapperStruct00.var_1_5 [L69] EXPR WrapperStruct00.var_1_6 [L69] EXPR ((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6) [L69] EXPR WrapperStruct00.var_1_5 [L69] EXPR ((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6) [L69] EXPR ((WrapperStruct00.var_1_4) > (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6)))) [L69] EXPR (((((WrapperStruct00.var_1_4) > (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6)))))) < 0 ) ? -((((WrapperStruct00.var_1_4) > (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6)))))) : ((((WrapperStruct00.var_1_4) > (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6)))))) [L69] EXPR WrapperStruct00.var_1_4 [L69] EXPR WrapperStruct00.var_1_5 [L69] EXPR WrapperStruct00.var_1_6 [L69] EXPR ((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6) [L69] EXPR WrapperStruct00.var_1_5 [L69] EXPR ((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6) [L69] EXPR ((WrapperStruct00.var_1_4) > (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6)))) [L69] EXPR WrapperStruct00.var_1_5 [L69] EXPR WrapperStruct00.var_1_6 [L69] EXPR ((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6) [L69] EXPR WrapperStruct00.var_1_5 [L69] EXPR ((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6) [L69] EXPR ((WrapperStruct00.var_1_4) > (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6)))) [L69] EXPR (((((WrapperStruct00.var_1_4) > (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6)))))) < 0 ) ? -((((WrapperStruct00.var_1_4) > (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6)))))) : ((((WrapperStruct00.var_1_4) > (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6)))))) [L69] WrapperStruct00.var_1_1 = (((((((WrapperStruct00.var_1_4) > (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6)))))) < 0 ) ? -((((WrapperStruct00.var_1_4) > (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6)))))) : ((((WrapperStruct00.var_1_4) > (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6)))))))) [L117] RET step() [L118] CALL, EXPR property() [L108] EXPR WrapperStruct00.var_1_2 [L108] EXPR (WrapperStruct00.var_1_2 >= 64.5f) ? ((WrapperStruct00.var_1_2 >= WrapperStruct00.var_1_3) ? (WrapperStruct00.var_1_1 == ((unsigned short int) (((((((WrapperStruct00.var_1_4) > (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6)))))) < 0 ) ? -((((WrapperStruct00.var_1_4) > (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6)))))) : ((((WrapperStruct00.var_1_4) > (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6)))))))))) : (WrapperStruct00.var_1_13 ? (WrapperStruct00.var_1_1 == ((unsigned short int) WrapperStruct00.var_1_5)) : (WrapperStruct00.var_1_1 == ((unsigned short int) WrapperStruct00.var_1_6)))) : (WrapperStruct00.var_1_1 == ((unsigned short int) 50)) [L108] EXPR WrapperStruct00.var_1_1 [L108] EXPR (WrapperStruct00.var_1_2 >= 64.5f) ? ((WrapperStruct00.var_1_2 >= WrapperStruct00.var_1_3) ? (WrapperStruct00.var_1_1 == ((unsigned short int) (((((((WrapperStruct00.var_1_4) > (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6)))))) < 0 ) ? -((((WrapperStruct00.var_1_4) > (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6)))))) : ((((WrapperStruct00.var_1_4) > (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6)))))))))) : (WrapperStruct00.var_1_13 ? (WrapperStruct00.var_1_1 == ((unsigned short int) WrapperStruct00.var_1_5)) : (WrapperStruct00.var_1_1 == ((unsigned short int) WrapperStruct00.var_1_6)))) : (WrapperStruct00.var_1_1 == ((unsigned short int) 50)) [L108] EXPR ((WrapperStruct00.var_1_2 >= 64.5f) ? ((WrapperStruct00.var_1_2 >= WrapperStruct00.var_1_3) ? (WrapperStruct00.var_1_1 == ((unsigned short int) (((((((WrapperStruct00.var_1_4) > (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6)))))) < 0 ) ? -((((WrapperStruct00.var_1_4) > (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6)))))) : ((((WrapperStruct00.var_1_4) > (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6)))))))))) : (WrapperStruct00.var_1_13 ? (WrapperStruct00.var_1_1 == ((unsigned short int) WrapperStruct00.var_1_5)) : (WrapperStruct00.var_1_1 == ((unsigned short int) WrapperStruct00.var_1_6)))) : (WrapperStruct00.var_1_1 == ((unsigned short int) 50))) && (WrapperStruct00.var_1_8 == ((signed short int) ((((WrapperStruct00.var_1_9) < 0 ) ? -(WrapperStruct00.var_1_9) : (WrapperStruct00.var_1_9))))) [L108] EXPR (((WrapperStruct00.var_1_2 >= 64.5f) ? ((WrapperStruct00.var_1_2 >= WrapperStruct00.var_1_3) ? (WrapperStruct00.var_1_1 == ((unsigned short int) (((((((WrapperStruct00.var_1_4) > (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6)))))) < 0 ) ? -((((WrapperStruct00.var_1_4) > (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6)))))) : ((((WrapperStruct00.var_1_4) > (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6)))))))))) : (WrapperStruct00.var_1_13 ? (WrapperStruct00.var_1_1 == ((unsigned short int) WrapperStruct00.var_1_5)) : (WrapperStruct00.var_1_1 == ((unsigned short int) WrapperStruct00.var_1_6)))) : (WrapperStruct00.var_1_1 == ((unsigned short int) 50))) && (WrapperStruct00.var_1_8 == ((signed short int) ((((WrapperStruct00.var_1_9) < 0 ) ? -(WrapperStruct00.var_1_9) : (WrapperStruct00.var_1_9)))))) && (((50 >> WrapperStruct00.var_1_4) <= WrapperStruct00.var_1_8) ? (WrapperStruct00.var_1_10 == ((unsigned char) ((! (! WrapperStruct00.var_1_11)) || WrapperStruct00.var_1_12))) : (WrapperStruct00.var_1_10 == ((unsigned char) (! WrapperStruct00.var_1_11)))) [L108] EXPR ((((WrapperStruct00.var_1_2 >= 64.5f) ? ((WrapperStruct00.var_1_2 >= WrapperStruct00.var_1_3) ? (WrapperStruct00.var_1_1 == ((unsigned short int) (((((((WrapperStruct00.var_1_4) > (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6)))))) < 0 ) ? -((((WrapperStruct00.var_1_4) > (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6)))))) : ((((WrapperStruct00.var_1_4) > (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6)))))))))) : (WrapperStruct00.var_1_13 ? (WrapperStruct00.var_1_1 == ((unsigned short int) WrapperStruct00.var_1_5)) : (WrapperStruct00.var_1_1 == ((unsigned short int) WrapperStruct00.var_1_6)))) : (WrapperStruct00.var_1_1 == ((unsigned short int) 50))) && (WrapperStruct00.var_1_8 == ((signed short int) ((((WrapperStruct00.var_1_9) < 0 ) ? -(WrapperStruct00.var_1_9) : (WrapperStruct00.var_1_9)))))) && (((50 >> WrapperStruct00.var_1_4) <= WrapperStruct00.var_1_8) ? (WrapperStruct00.var_1_10 == ((unsigned char) ((! (! WrapperStruct00.var_1_11)) || WrapperStruct00.var_1_12))) : (WrapperStruct00.var_1_10 == ((unsigned char) (! WrapperStruct00.var_1_11))))) && ((! WrapperStruct00.var_1_12) ? ((WrapperStruct00.var_1_4 >= ((((WrapperStruct00.var_1_6) < (WrapperStruct00.var_1_8)) ? (WrapperStruct00.var_1_6) : (WrapperStruct00.var_1_8)))) ? (WrapperStruct00.var_1_13 == ((unsigned char) (WrapperStruct00.var_1_10 && WrapperStruct00.var_1_11))) : (WrapperStruct00.var_1_13 == ((unsigned char) WrapperStruct00.var_1_11))) : 1) [L108-L109] return ((((WrapperStruct00.var_1_2 >= 64.5f) ? ((WrapperStruct00.var_1_2 >= WrapperStruct00.var_1_3) ? (WrapperStruct00.var_1_1 == ((unsigned short int) (((((((WrapperStruct00.var_1_4) > (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6)))))) < 0 ) ? -((((WrapperStruct00.var_1_4) > (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6)))))) : ((((WrapperStruct00.var_1_4) > (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6))))) ? (WrapperStruct00.var_1_4) : (((((WrapperStruct00.var_1_5) > (WrapperStruct00.var_1_6)) ? (WrapperStruct00.var_1_5) : (WrapperStruct00.var_1_6)))))))))) : (WrapperStruct00.var_1_13 ? (WrapperStruct00.var_1_1 == ((unsigned short int) WrapperStruct00.var_1_5)) : (WrapperStruct00.var_1_1 == ((unsigned short int) WrapperStruct00.var_1_6)))) : (WrapperStruct00.var_1_1 == ((unsigned short int) 50))) && (WrapperStruct00.var_1_8 == ((signed short int) ((((WrapperStruct00.var_1_9) < 0 ) ? -(WrapperStruct00.var_1_9) : (WrapperStruct00.var_1_9)))))) && (((50 >> WrapperStruct00.var_1_4) <= WrapperStruct00.var_1_8) ? (WrapperStruct00.var_1_10 == ((unsigned char) ((! (! WrapperStruct00.var_1_11)) || WrapperStruct00.var_1_12))) : (WrapperStruct00.var_1_10 == ((unsigned char) (! WrapperStruct00.var_1_11))))) && ((! WrapperStruct00.var_1_12) ? ((WrapperStruct00.var_1_4 >= ((((WrapperStruct00.var_1_6) < (WrapperStruct00.var_1_8)) ? (WrapperStruct00.var_1_6) : (WrapperStruct00.var_1_8)))) ? (WrapperStruct00.var_1_13 == ((unsigned char) (WrapperStruct00.var_1_10 && WrapperStruct00.var_1_11))) : (WrapperStruct00.var_1_13 == ((unsigned char) WrapperStruct00.var_1_11))) : 1) ; [L118] RET, EXPR property() [L118] CALL __VERIFIER_assert(property()) [L19] COND TRUE !(cond) VAL [WrapperStruct00={4:0}, isInitial=1] [L19] reach_error() VAL [WrapperStruct00={4:0}, isInitial=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.9s, OverallIterations: 1, TraceHistogramMax: 14, 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=37occurred 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, 2.4s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 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 [2024-11-09 04:48:50,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/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_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-49.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje --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 06bb6f3bbb0c6ee3bc73b3f1732ad2bc217c179634d5fa3dbf744e010ef897a1 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 04:48:53,531 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 04:48:53,613 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-09 04:48:53,621 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 04:48:53,622 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 04:48:53,671 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 04:48:53,671 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 04:48:53,672 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 04:48:53,673 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 04:48:53,675 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 04:48:53,675 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 04:48:53,676 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 04:48:53,676 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 04:48:53,677 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 04:48:53,677 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 04:48:53,678 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 04:48:53,678 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 04:48:53,679 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 04:48:53,679 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 04:48:53,683 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 04:48:53,683 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 04:48:53,688 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 04:48:53,688 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 04:48:53,688 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 04:48:53,689 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 04:48:53,689 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-09 04:48:53,689 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 04:48:53,689 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-09 04:48:53,690 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 04:48:53,690 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 04:48:53,690 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 04:48:53,691 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 04:48:53,691 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 04:48:53,691 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 04:48:53,692 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 04:48:53,692 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:48:53,693 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 04:48:53,693 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 04:48:53,693 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 04:48:53,693 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-09 04:48:53,694 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-09 04:48:53,696 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 04:48:53,696 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 04:48:53,696 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06bb6f3bbb0c6ee3bc73b3f1732ad2bc217c179634d5fa3dbf744e010ef897a1 [2024-11-09 04:48:54,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 04:48:54,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 04:48:54,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 04:48:54,118 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 04:48:54,119 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 04:48:54,120 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-49.i Unable to find full path for "g++" [2024-11-09 04:48:56,245 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 04:48:56,536 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 04:48:56,537 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-49.i [2024-11-09 04:48:56,552 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/data/647e897e9/bda3b516146845ce9dd6a0c1ee64f6bf/FLAGb4272ed3a [2024-11-09 04:48:56,576 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/data/647e897e9/bda3b516146845ce9dd6a0c1ee64f6bf [2024-11-09 04:48:56,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 04:48:56,583 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 04:48:56,586 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 04:48:56,587 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 04:48:56,594 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 04:48:56,595 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:48:56" (1/1) ... [2024-11-09 04:48:56,596 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a3d0dfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:56, skipping insertion in model container [2024-11-09 04:48:56,597 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:48:56" (1/1) ... [2024-11-09 04:48:56,650 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 04:48:56,866 WARN L250 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_24e9ecb9-aea4-41da-a7c0-277c79afe552/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-49.i[916,929] [2024-11-09 04:48:56,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:48:56,997 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 04:48:57,011 WARN L250 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_24e9ecb9-aea4-41da-a7c0-277c79afe552/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-49.i[916,929] [2024-11-09 04:48:57,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:48:57,166 INFO L204 MainTranslator]: Completed translation [2024-11-09 04:48:57,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:57 WrapperNode [2024-11-09 04:48:57,167 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 04:48:57,168 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 04:48:57,168 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 04:48:57,168 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 04:48:57,176 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:57" (1/1) ... [2024-11-09 04:48:57,205 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:57" (1/1) ... [2024-11-09 04:48:57,265 INFO L138 Inliner]: procedures = 34, calls = 192, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 641 [2024-11-09 04:48:57,270 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 04:48:57,270 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 04:48:57,270 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 04:48:57,271 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 04:48:57,285 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:57" (1/1) ... [2024-11-09 04:48:57,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:57" (1/1) ... [2024-11-09 04:48:57,296 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:57" (1/1) ... [2024-11-09 04:48:57,297 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:57" (1/1) ... [2024-11-09 04:48:57,321 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:57" (1/1) ... [2024-11-09 04:48:57,326 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:57" (1/1) ... [2024-11-09 04:48:57,330 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:57" (1/1) ... [2024-11-09 04:48:57,333 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:57" (1/1) ... [2024-11-09 04:48:57,338 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 04:48:57,339 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 04:48:57,340 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 04:48:57,340 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 04:48:57,341 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:57" (1/1) ... [2024-11-09 04:48:57,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:48:57,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:48:57,400 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 04:48:57,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 04:48:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 04:48:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2024-11-09 04:48:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-09 04:48:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2024-11-09 04:48:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2024-11-09 04:48:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2024-11-09 04:48:57,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2024-11-09 04:48:57,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2024-11-09 04:48:57,442 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 04:48:57,442 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 04:48:57,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2024-11-09 04:48:57,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 04:48:57,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 04:48:57,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2024-11-09 04:48:57,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2024-11-09 04:48:57,628 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 04:48:57,631 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 04:48:58,642 INFO L? ?]: Removed 212 outVars from TransFormulas that were not future-live. [2024-11-09 04:48:58,642 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 04:48:58,662 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 04:48:58,663 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 04:48:58,663 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:48:58 BoogieIcfgContainer [2024-11-09 04:48:58,663 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 04:48:58,665 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 04:48:58,665 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 04:48:58,670 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 04:48:58,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:48:56" (1/3) ... [2024-11-09 04:48:58,672 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60479c7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:48:58, skipping insertion in model container [2024-11-09 04:48:58,672 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:57" (2/3) ... [2024-11-09 04:48:58,673 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60479c7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:48:58, skipping insertion in model container [2024-11-09 04:48:58,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:48:58" (3/3) ... [2024-11-09 04:48:58,674 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-49.i [2024-11-09 04:48:58,695 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 04:48:58,695 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 04:48:58,759 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 04:48:58,766 INFO L333 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, 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;@7bccc023, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 04:48:58,766 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 04:48:58,771 INFO L276 IsEmpty]: Start isEmpty. Operand has 130 states, 113 states have (on average 1.4778761061946903) internal successors, (167), 114 states have internal predecessors, (167), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-09 04:48:58,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-09 04:48:58,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:48:58,792 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:48:58,793 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:48:58,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:48:58,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1635791032, now seen corresponding path program 1 times [2024-11-09 04:48:58,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:48:58,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [298378744] [2024-11-09 04:48:58,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:48:58,820 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 [2024-11-09 04:48:58,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:48:58,824 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:48:58,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:48:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:48:59,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-09 04:48:59,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:48:59,325 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2024-11-09 04:48:59,325 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:48:59,328 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:48:59,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [298378744] [2024-11-09 04:48:59,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [298378744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:48:59,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:48:59,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:48:59,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606618848] [2024-11-09 04:48:59,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:48:59,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 04:48:59,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:48:59,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 04:48:59,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 04:48:59,372 INFO L87 Difference]: Start difference. First operand has 130 states, 113 states have (on average 1.4778761061946903) internal successors, (167), 114 states have internal predecessors, (167), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 04:48:59,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:48:59,425 INFO L93 Difference]: Finished difference Result 253 states and 398 transitions. [2024-11-09 04:48:59,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 04:48:59,427 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 115 [2024-11-09 04:48:59,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:48:59,437 INFO L225 Difference]: With dead ends: 253 [2024-11-09 04:48:59,438 INFO L226 Difference]: Without dead ends: 126 [2024-11-09 04:48:59,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 04:48:59,448 INFO L432 NwaCegarLoop]: 188 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:48:59,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:48:59,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-09 04:48:59,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2024-11-09 04:48:59,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 110 states have (on average 1.4545454545454546) internal successors, (160), 110 states have internal predecessors, (160), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-09 04:48:59,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 188 transitions. [2024-11-09 04:48:59,518 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 188 transitions. Word has length 115 [2024-11-09 04:48:59,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:48:59,520 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 188 transitions. [2024-11-09 04:48:59,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 04:48:59,521 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 188 transitions. [2024-11-09 04:48:59,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-09 04:48:59,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:48:59,528 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:48:59,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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)] Ended with exit code 0 [2024-11-09 04:48:59,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:48:59,733 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:48:59,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:48:59,734 INFO L85 PathProgramCache]: Analyzing trace with hash -656163232, now seen corresponding path program 1 times [2024-11-09 04:48:59,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:48:59,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1376315748] [2024-11-09 04:48:59,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:48:59,736 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:48:59,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:48:59,740 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:48:59,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:49:00,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:49:00,127 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 04:49:00,133 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:49:00,182 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2024-11-09 04:49:00,183 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:49:00,183 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:49:00,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1376315748] [2024-11-09 04:49:00,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1376315748] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:49:00,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:49:00,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 04:49:00,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505157750] [2024-11-09 04:49:00,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:49:00,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:49:00,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:49:00,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:49:00,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:49:00,189 INFO L87 Difference]: Start difference. First operand 126 states and 188 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 04:49:00,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:49:00,257 INFO L93 Difference]: Finished difference Result 251 states and 376 transitions. [2024-11-09 04:49:00,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:49:00,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 115 [2024-11-09 04:49:00,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:49:00,260 INFO L225 Difference]: With dead ends: 251 [2024-11-09 04:49:00,260 INFO L226 Difference]: Without dead ends: 128 [2024-11-09 04:49:00,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:49:00,263 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 0 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:49:00,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 547 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:49:00,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-09 04:49:00,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2024-11-09 04:49:00,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 112 states have (on average 1.4464285714285714) internal successors, (162), 112 states have internal predecessors, (162), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-09 04:49:00,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 190 transitions. [2024-11-09 04:49:00,278 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 190 transitions. Word has length 115 [2024-11-09 04:49:00,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:49:00,280 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 190 transitions. [2024-11-09 04:49:00,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 04:49:00,280 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 190 transitions. [2024-11-09 04:49:00,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-09 04:49:00,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:49:00,284 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:49:00,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:49:00,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:49:00,486 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:49:00,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:49:00,487 INFO L85 PathProgramCache]: Analyzing trace with hash 650979166, now seen corresponding path program 1 times [2024-11-09 04:49:00,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:49:00,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1266460236] [2024-11-09 04:49:00,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:49:00,488 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 [2024-11-09 04:49:00,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:49:00,492 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:49:00,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:49:00,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:49:00,834 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 04:49:00,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:49:00,890 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 [2024-11-09 04:49:00,970 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 37 treesize of output 25 [2024-11-09 04:49:01,003 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-09 04:49:01,003 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:49:01,003 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:49:01,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1266460236] [2024-11-09 04:49:01,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1266460236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:49:01,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:49:01,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 04:49:01,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349997797] [2024-11-09 04:49:01,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:49:01,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 04:49:01,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:49:01,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 04:49:01,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:49:01,010 INFO L87 Difference]: Start difference. First operand 128 states and 190 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 04:49:02,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:49:02,134 INFO L93 Difference]: Finished difference Result 380 states and 567 transitions. [2024-11-09 04:49:02,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 04:49:02,135 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 115 [2024-11-09 04:49:02,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:49:02,137 INFO L225 Difference]: With dead ends: 380 [2024-11-09 04:49:02,138 INFO L226 Difference]: Without dead ends: 255 [2024-11-09 04:49:02,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 04:49:02,140 INFO L432 NwaCegarLoop]: 198 mSDtfsCounter, 169 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:49:02,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 667 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 04:49:02,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-09 04:49:02,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 132. [2024-11-09 04:49:02,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 116 states have (on average 1.4396551724137931) internal successors, (167), 116 states have internal predecessors, (167), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-09 04:49:02,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 195 transitions. [2024-11-09 04:49:02,156 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 195 transitions. Word has length 115 [2024-11-09 04:49:02,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:49:02,157 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 195 transitions. [2024-11-09 04:49:02,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 04:49:02,158 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 195 transitions. [2024-11-09 04:49:02,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-09 04:49:02,160 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:49:02,160 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:49:02,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:49:02,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:49:02,365 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:49:02,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:49:02,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1319558055, now seen corresponding path program 1 times [2024-11-09 04:49:02,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:49:02,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1230303384] [2024-11-09 04:49:02,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:49:02,367 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 [2024-11-09 04:49:02,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:49:02,369 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:49:02,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:49:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:49:02,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 04:49:02,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:49:02,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 04:49:02,933 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 27 treesize of output 26 [2024-11-09 04:49:03,031 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 81 treesize of output 61 [2024-11-09 04:49:03,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:49:03,055 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:49:03,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 103 [2024-11-09 04:49:03,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 81 treesize of output 41 [2024-11-09 04:49:03,423 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:49:03,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 99 treesize of output 45 [2024-11-09 04:49:03,481 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 04:49:03,485 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:49:03,485 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:49:03,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1230303384] [2024-11-09 04:49:03,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1230303384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:49:03,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:49:03,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 04:49:03,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159072169] [2024-11-09 04:49:03,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:49:03,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 04:49:03,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:49:03,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 04:49:03,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-09 04:49:03,488 INFO L87 Difference]: Start difference. First operand 132 states and 195 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 04:49:07,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:49:07,230 INFO L93 Difference]: Finished difference Result 386 states and 567 transitions. [2024-11-09 04:49:07,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 04:49:07,231 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 117 [2024-11-09 04:49:07,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:49:07,234 INFO L225 Difference]: With dead ends: 386 [2024-11-09 04:49:07,234 INFO L226 Difference]: Without dead ends: 257 [2024-11-09 04:49:07,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2024-11-09 04:49:07,236 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 397 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:49:07,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 431 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-09 04:49:07,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-11-09 04:49:07,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 248. [2024-11-09 04:49:07,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 220 states have (on average 1.440909090909091) internal successors, (317), 221 states have internal predecessors, (317), 24 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-09 04:49:07,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 365 transitions. [2024-11-09 04:49:07,279 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 365 transitions. Word has length 117 [2024-11-09 04:49:07,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:49:07,280 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 365 transitions. [2024-11-09 04:49:07,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 9 states have internal predecessors, (53), 2 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 04:49:07,280 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 365 transitions. [2024-11-09 04:49:07,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-09 04:49:07,289 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:49:07,290 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:49:07,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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)] Forceful destruction successful, exit code 0 [2024-11-09 04:49:07,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:49:07,491 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:49:07,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:49:07,491 INFO L85 PathProgramCache]: Analyzing trace with hash 671261555, now seen corresponding path program 1 times [2024-11-09 04:49:07,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:49:07,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [556290361] [2024-11-09 04:49:07,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:49:07,492 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:49:07,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:49:07,493 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:49:07,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:49:07,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:49:07,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 04:49:07,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:49:07,922 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 [2024-11-09 04:49:07,961 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 28 treesize of output 27 [2024-11-09 04:49:08,034 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 82 treesize of output 62 [2024-11-09 04:49:08,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:49:08,054 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:49:08,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 104 [2024-11-09 04:49:08,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 19 [2024-11-09 04:49:08,478 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:49:08,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 90 [2024-11-09 04:49:08,759 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:49:08,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 120 treesize of output 101 [2024-11-09 04:49:09,223 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:49:09,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 126 treesize of output 56 [2024-11-09 04:49:12,127 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-09 04:49:12,127 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:49:12,128 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:49:12,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [556290361] [2024-11-09 04:49:12,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [556290361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:49:12,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:49:12,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 04:49:12,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016377045] [2024-11-09 04:49:12,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:49:12,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 04:49:12,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:49:12,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 04:49:12,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-09 04:49:12,131 INFO L87 Difference]: Start difference. First operand 248 states and 365 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 04:49:14,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 04:49:16,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 04:49:20,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 04:49:22,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 04:49:24,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 04:49:26,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 04:49:28,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 04:49:30,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 04:49:33,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 04:49:35,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 04:49:38,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 04:49:40,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 04:49:42,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 04:49:44,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 04:49:47,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 04:49:49,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 04:49:51,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 04:49:54,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 04:49:56,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 04:49:57,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:49:57,070 INFO L93 Difference]: Finished difference Result 903 states and 1330 transitions. [2024-11-09 04:49:57,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 04:49:57,071 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 119 [2024-11-09 04:49:57,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:49:57,076 INFO L225 Difference]: With dead ends: 903 [2024-11-09 04:49:57,077 INFO L226 Difference]: Without dead ends: 658 [2024-11-09 04:49:57,078 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2024-11-09 04:49:57,079 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 737 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 81 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.4s IncrementalHoareTripleChecker+Time [2024-11-09 04:49:57,079 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 762 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 978 Invalid, 15 Unknown, 0 Unchecked, 44.4s Time] [2024-11-09 04:49:57,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2024-11-09 04:49:57,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 468. [2024-11-09 04:49:57,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 422 states have (on average 1.45260663507109) internal successors, (613), 425 states have internal predecessors, (613), 40 states have call successors, (40), 5 states have call predecessors, (40), 5 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-09 04:49:57,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 693 transitions. [2024-11-09 04:49:57,173 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 693 transitions. Word has length 119 [2024-11-09 04:49:57,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:49:57,174 INFO L471 AbstractCegarLoop]: Abstraction has 468 states and 693 transitions. [2024-11-09 04:49:57,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 04:49:57,174 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 693 transitions. [2024-11-09 04:49:57,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-09 04:49:57,181 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:49:57,182 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:49:57,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:49:57,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:49:57,383 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:49:57,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:49:57,383 INFO L85 PathProgramCache]: Analyzing trace with hash 278234545, now seen corresponding path program 1 times [2024-11-09 04:49:57,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:49:57,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1654925115] [2024-11-09 04:49:57,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:49:57,384 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 [2024-11-09 04:49:57,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:49:57,387 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:49:57,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:49:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:49:57,788 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 04:49:57,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:49:57,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 04:49:57,807 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 [2024-11-09 04:49:57,899 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 [2024-11-09 04:49:58,050 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 46 treesize of output 42 [2024-11-09 04:49:58,125 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 115 treesize of output 89 [2024-11-09 04:49:58,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:49:58,140 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:49:58,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 119 [2024-11-09 04:49:58,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 45 [2024-11-09 04:49:58,747 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:49:58,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 178 treesize of output 120 [2024-11-09 04:49:59,118 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:49:59,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 186 treesize of output 131 [2024-11-09 04:50:00,059 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:50:00,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 203 treesize of output 91 [2024-11-09 04:50:00,362 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-11-09 04:50:00,362 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:50:00,363 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:50:00,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1654925115] [2024-11-09 04:50:00,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1654925115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:50:00,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:50:00,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-09 04:50:00,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31252721] [2024-11-09 04:50:00,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:50:00,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 04:50:00,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:50:00,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 04:50:00,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-09 04:50:00,366 INFO L87 Difference]: Start difference. First operand 468 states and 693 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 04:50:07,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:50:07,867 INFO L93 Difference]: Finished difference Result 1122 states and 1655 transitions. [2024-11-09 04:50:07,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 04:50:07,869 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 119 [2024-11-09 04:50:07,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:50:07,873 INFO L225 Difference]: With dead ends: 1122 [2024-11-09 04:50:07,873 INFO L226 Difference]: Without dead ends: 657 [2024-11-09 04:50:07,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2024-11-09 04:50:07,876 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 848 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 1694 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 1761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:50:07,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 1103 Invalid, 1761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1694 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-11-09 04:50:07,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2024-11-09 04:50:07,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 500. [2024-11-09 04:50:07,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 454 states have (on average 1.4537444933920705) internal successors, (660), 457 states have internal predecessors, (660), 40 states have call successors, (40), 5 states have call predecessors, (40), 5 states have return successors, (40), 37 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-09 04:50:07,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 740 transitions. [2024-11-09 04:50:07,933 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 740 transitions. Word has length 119 [2024-11-09 04:50:07,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:50:07,934 INFO L471 AbstractCegarLoop]: Abstraction has 500 states and 740 transitions. [2024-11-09 04:50:07,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 04:50:07,934 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 740 transitions. [2024-11-09 04:50:07,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-09 04:50:07,936 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:50:07,936 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:50:07,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:50:08,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:50:08,138 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:50:08,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:50:08,138 INFO L85 PathProgramCache]: Analyzing trace with hash -863622900, now seen corresponding path program 1 times [2024-11-09 04:50:08,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:50:08,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068657992] [2024-11-09 04:50:08,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:50:08,140 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 [2024-11-09 04:50:08,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:50:08,143 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:50:08,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:50:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:50:08,534 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 04:50:08,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:50:08,549 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 [2024-11-09 04:50:08,706 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 41 treesize of output 19 [2024-11-09 04:50:08,835 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 [2024-11-09 04:50:08,907 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 91 treesize of output 69 [2024-11-09 04:50:08,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:50:08,920 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:50:08,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 93 [2024-11-09 04:50:09,111 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:50:09,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 52 [2024-11-09 04:50:09,266 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:50:09,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 23 [2024-11-09 04:50:09,316 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 173 proven. 6 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2024-11-09 04:50:09,317 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:50:09,692 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 33 proven. 6 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 04:50:09,692 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:50:09,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068657992] [2024-11-09 04:50:09,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068657992] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:50:09,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [867956967] [2024-11-09 04:50:09,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:50:09,693 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:50:09,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:50:09,697 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:50:09,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-11-09 04:50:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:50:10,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-09 04:50:10,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:50:10,773 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 [2024-11-09 04:50:11,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2024-11-09 04:50:11,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2024-11-09 04:50:11,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2024-11-09 04:50:11,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2024-11-09 04:50:12,196 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 64 treesize of output 32 [2024-11-09 04:50:12,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2024-11-09 04:50:12,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2024-11-09 04:50:12,980 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 62 treesize of output 41 [2024-11-09 04:50:13,200 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 108 treesize of output 78 [2024-11-09 04:50:13,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:50:13,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 102 [2024-11-09 04:50:13,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:50:13,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:50:13,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 25 [2024-11-09 04:50:13,763 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:50:13,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 168 treesize of output 116 [2024-11-09 04:50:14,036 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:50:14,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 185 treesize of output 93 [2024-11-09 04:50:14,182 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-09 04:50:14,183 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:50:14,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [867956967] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:50:14,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 04:50:14,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11, 8] total 26 [2024-11-09 04:50:14,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171792212] [2024-11-09 04:50:14,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:50:14,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 04:50:14,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:50:14,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 04:50:14,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2024-11-09 04:50:14,186 INFO L87 Difference]: Start difference. First operand 500 states and 740 transitions. Second operand has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 04:50:17,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:50:17,830 INFO L93 Difference]: Finished difference Result 1478 states and 2170 transitions. [2024-11-09 04:50:17,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 04:50:17,831 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 119 [2024-11-09 04:50:17,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:50:17,836 INFO L225 Difference]: With dead ends: 1478 [2024-11-09 04:50:17,836 INFO L226 Difference]: Without dead ends: 981 [2024-11-09 04:50:17,838 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 329 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=131, Invalid=739, Unknown=0, NotChecked=0, Total=870 [2024-11-09 04:50:17,838 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 649 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:50:17,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 414 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-09 04:50:17,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2024-11-09 04:50:17,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 677. [2024-11-09 04:50:17,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 586 states have (on average 1.4078498293515358) internal successors, (825), 592 states have internal predecessors, (825), 80 states have call successors, (80), 10 states have call predecessors, (80), 10 states have return successors, (80), 74 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-09 04:50:17,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 985 transitions. [2024-11-09 04:50:17,922 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 985 transitions. Word has length 119 [2024-11-09 04:50:17,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:50:17,922 INFO L471 AbstractCegarLoop]: Abstraction has 677 states and 985 transitions. [2024-11-09 04:50:17,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 04:50:17,923 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 985 transitions. [2024-11-09 04:50:17,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-09 04:50:17,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:50:17,925 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:50:17,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2024-11-09 04:50:18,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:50:18,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:50:18,327 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:50:18,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:50:18,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1818267407, now seen corresponding path program 1 times [2024-11-09 04:50:18,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:50:18,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1971728740] [2024-11-09 04:50:18,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:50:18,328 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 [2024-11-09 04:50:18,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:50:18,329 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:50:18,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:50:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:50:18,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 04:50:18,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:50:18,729 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 [2024-11-09 04:50:18,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 04:50:18,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 04:50:18,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2024-11-09 04:50:18,817 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 105 treesize of output 81 [2024-11-09 04:50:18,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:50:18,828 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:50:18,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 115 [2024-11-09 04:50:18,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 25 treesize of output 4 [2024-11-09 04:50:19,508 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:50:19,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 148 treesize of output 108 [2024-11-09 04:50:19,756 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:50:19,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 156 treesize of output 119 [2024-11-09 04:50:20,441 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:50:20,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 174 treesize of output 80 [2024-11-09 04:50:20,789 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-09 04:50:20,789 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:50:20,790 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:50:20,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1971728740] [2024-11-09 04:50:20,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1971728740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:50:20,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:50:20,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-09 04:50:20,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915043066] [2024-11-09 04:50:20,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:50:20,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 04:50:20,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:50:20,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 04:50:20,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-09 04:50:20,792 INFO L87 Difference]: Start difference. First operand 677 states and 985 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 04:50:30,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:50:30,005 INFO L93 Difference]: Finished difference Result 1752 states and 2538 transitions. [2024-11-09 04:50:30,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 04:50:30,007 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 119 [2024-11-09 04:50:30,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:50:30,013 INFO L225 Difference]: With dead ends: 1752 [2024-11-09 04:50:30,013 INFO L226 Difference]: Without dead ends: 1078 [2024-11-09 04:50:30,015 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-11-09 04:50:30,015 INFO L432 NwaCegarLoop]: 226 mSDtfsCounter, 767 mSDsluCounter, 1424 mSDsCounter, 0 mSdLazyCounter, 1876 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 1650 SdHoareTripleChecker+Invalid, 1959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2024-11-09 04:50:30,016 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 1650 Invalid, 1959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1876 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2024-11-09 04:50:30,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2024-11-09 04:50:30,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 637. [2024-11-09 04:50:30,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 562 states have (on average 1.4234875444839858) internal successors, (800), 566 states have internal predecessors, (800), 64 states have call successors, (64), 10 states have call predecessors, (64), 10 states have return successors, (64), 60 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-09 04:50:30,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 928 transitions. [2024-11-09 04:50:30,095 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 928 transitions. Word has length 119 [2024-11-09 04:50:30,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:50:30,096 INFO L471 AbstractCegarLoop]: Abstraction has 637 states and 928 transitions. [2024-11-09 04:50:30,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 04:50:30,096 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 928 transitions. [2024-11-09 04:50:30,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-09 04:50:30,099 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:50:30,099 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:50:30,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:50:30,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:50:30,300 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:50:30,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:50:30,301 INFO L85 PathProgramCache]: Analyzing trace with hash 2083672879, now seen corresponding path program 1 times [2024-11-09 04:50:30,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:50:30,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436917743] [2024-11-09 04:50:30,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:50:30,302 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 [2024-11-09 04:50:30,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:50:30,306 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:50:30,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:50:30,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:50:30,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 04:50:30,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:50:30,680 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 [2024-11-09 04:50:30,718 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 27 treesize of output 26 [2024-11-09 04:50:30,758 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 81 treesize of output 61 [2024-11-09 04:50:30,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:50:30,774 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:50:30,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 103 [2024-11-09 04:50:30,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 70 treesize of output 41 [2024-11-09 04:50:31,177 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:50:31,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 110 treesize of output 88 [2024-11-09 04:50:31,382 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:50:31,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 118 treesize of output 99 [2024-11-09 04:50:31,788 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:50:31,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 124 treesize of output 54 [2024-11-09 04:50:31,851 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-09 04:50:31,852 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:50:31,852 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:50:31,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [436917743] [2024-11-09 04:50:31,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [436917743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:50:31,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:50:31,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-09 04:50:31,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322018520] [2024-11-09 04:50:31,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:50:31,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 04:50:31,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:50:31,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 04:50:31,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-09 04:50:31,856 INFO L87 Difference]: Start difference. First operand 637 states and 928 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 04:50:37,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:50:37,252 INFO L93 Difference]: Finished difference Result 1615 states and 2333 transitions. [2024-11-09 04:50:37,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 04:50:37,253 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 119 [2024-11-09 04:50:37,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:50:37,258 INFO L225 Difference]: With dead ends: 1615 [2024-11-09 04:50:37,258 INFO L226 Difference]: Without dead ends: 981 [2024-11-09 04:50:37,260 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2024-11-09 04:50:37,261 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 851 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-09 04:50:37,261 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 803 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-09 04:50:37,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2024-11-09 04:50:37,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 564. [2024-11-09 04:50:37,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 505 states have (on average 1.4277227722772277) internal successors, (721), 507 states have internal predecessors, (721), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 46 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-09 04:50:37,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 817 transitions. [2024-11-09 04:50:37,341 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 817 transitions. Word has length 119 [2024-11-09 04:50:37,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:50:37,342 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 817 transitions. [2024-11-09 04:50:37,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 04:50:37,342 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 817 transitions. [2024-11-09 04:50:37,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-09 04:50:37,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:50:37,344 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:50:37,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:50:37,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:50:37,545 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:50:37,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:50:37,546 INFO L85 PathProgramCache]: Analyzing trace with hash 482555183, now seen corresponding path program 1 times [2024-11-09 04:50:37,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:50:37,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94910074] [2024-11-09 04:50:37,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:50:37,547 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 [2024-11-09 04:50:37,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:50:37,548 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:50:37,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:50:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:50:37,906 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 04:50:37,911 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:50:37,916 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 [2024-11-09 04:50:37,919 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 [2024-11-09 04:50:37,974 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 [2024-11-09 04:50:38,095 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 46 treesize of output 42 [2024-11-09 04:50:38,157 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 115 treesize of output 89 [2024-11-09 04:50:38,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:50:38,172 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:50:38,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 119 [2024-11-09 04:50:38,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 55 [2024-11-09 04:50:38,826 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:50:38,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 191 treesize of output 133 [2024-11-09 04:50:39,142 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:50:39,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 177 treesize of output 134 [2024-11-09 04:50:39,868 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:50:39,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 195 treesize of output 95 [2024-11-09 04:50:40,120 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-11-09 04:50:40,120 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:50:40,120 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:50:40,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94910074] [2024-11-09 04:50:40,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94910074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:50:40,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:50:40,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-09 04:50:40,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696763764] [2024-11-09 04:50:40,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:50:40,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 04:50:40,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:50:40,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 04:50:40,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-09 04:50:40,123 INFO L87 Difference]: Start difference. First operand 564 states and 817 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 04:50:53,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:50:53,224 INFO L93 Difference]: Finished difference Result 1459 states and 2103 transitions. [2024-11-09 04:50:53,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 04:50:53,226 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 119 [2024-11-09 04:50:53,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:50:53,230 INFO L225 Difference]: With dead ends: 1459 [2024-11-09 04:50:53,230 INFO L226 Difference]: Without dead ends: 898 [2024-11-09 04:50:53,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2024-11-09 04:50:53,232 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 628 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 3115 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 3176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2024-11-09 04:50:53,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [628 Valid, 1629 Invalid, 3176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 3115 Invalid, 0 Unknown, 0 Unchecked, 12.4s Time] [2024-11-09 04:50:53,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2024-11-09 04:50:53,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 562. [2024-11-09 04:50:53,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 503 states have (on average 1.4254473161033798) internal successors, (717), 505 states have internal predecessors, (717), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 46 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-09 04:50:53,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 813 transitions. [2024-11-09 04:50:53,317 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 813 transitions. Word has length 119 [2024-11-09 04:50:53,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:50:53,317 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 813 transitions. [2024-11-09 04:50:53,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 04:50:53,318 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 813 transitions. [2024-11-09 04:50:53,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-09 04:50:53,320 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:50:53,320 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:50:53,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:50:53,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:50:53,521 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:50:53,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:50:53,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1138263370, now seen corresponding path program 1 times [2024-11-09 04:50:53,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:50:53,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [732218991] [2024-11-09 04:50:53,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:50:53,522 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 [2024-11-09 04:50:53,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:50:53,524 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:50:53,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:50:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:50:53,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 04:50:53,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:50:53,807 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-09 04:50:53,807 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:50:53,807 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:50:53,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [732218991] [2024-11-09 04:50:53,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [732218991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:50:53,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:50:53,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 04:50:53,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799432767] [2024-11-09 04:50:53,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:50:53,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:50:53,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:50:53,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:50:53,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:50:53,809 INFO L87 Difference]: Start difference. First operand 562 states and 813 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 04:50:53,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:50:53,915 INFO L93 Difference]: Finished difference Result 1121 states and 1623 transitions. [2024-11-09 04:50:53,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:50:53,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 119 [2024-11-09 04:50:53,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:50:53,919 INFO L225 Difference]: With dead ends: 1121 [2024-11-09 04:50:53,919 INFO L226 Difference]: Without dead ends: 562 [2024-11-09 04:50:53,921 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:50:53,922 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 0 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:50:53,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 548 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:50:53,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2024-11-09 04:50:53,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2024-11-09 04:50:54,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 503 states have (on average 1.4214711729622267) internal successors, (715), 505 states have internal predecessors, (715), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 46 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-09 04:50:54,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 811 transitions. [2024-11-09 04:50:54,003 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 811 transitions. Word has length 119 [2024-11-09 04:50:54,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:50:54,003 INFO L471 AbstractCegarLoop]: Abstraction has 562 states and 811 transitions. [2024-11-09 04:50:54,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 04:50:54,003 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 811 transitions. [2024-11-09 04:50:54,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-09 04:50:54,006 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:50:54,007 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:50:54,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2024-11-09 04:50:54,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:50:54,208 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:50:54,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:50:54,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1442109068, now seen corresponding path program 1 times [2024-11-09 04:50:54,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:50:54,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [547199585] [2024-11-09 04:50:54,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:50:54,211 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 [2024-11-09 04:50:54,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:50:54,214 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:50:54,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:50:54,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:50:54,560 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 04:50:54,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:50:54,568 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 [2024-11-09 04:50:54,627 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 [2024-11-09 04:50:54,685 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 27 treesize of output 26 [2024-11-09 04:50:54,741 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:50:54,741 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 50 treesize of output 26 [2024-11-09 04:50:54,764 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 123 proven. 6 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-09 04:50:54,765 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:50:55,004 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 33 proven. 6 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 04:50:55,004 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:50:55,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [547199585] [2024-11-09 04:50:55,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [547199585] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:50:55,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2138241354] [2024-11-09 04:50:55,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:50:55,005 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:50:55,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:50:55,009 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:50:55,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2024-11-09 04:50:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:50:56,026 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 04:50:56,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:50:56,218 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 [2024-11-09 04:50:56,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2024-11-09 04:50:56,883 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:50:56,884 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 1 case distinctions, treesize of input 39 treesize of output 37 [2024-11-09 04:50:57,014 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:50:57,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 29 [2024-11-09 04:50:57,026 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 173 proven. 6 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2024-11-09 04:50:57,026 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:50:57,235 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 33 proven. 6 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 04:50:57,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2138241354] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:50:57,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887170746] [2024-11-09 04:50:57,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:50:57,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:50:57,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:50:57,238 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:50:57,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 04:50:57,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:50:57,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 04:50:57,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:50:57,536 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 [2024-11-09 04:50:57,597 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 27 treesize of output 26 [2024-11-09 04:50:57,649 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:50:57,650 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 50 treesize of output 26 [2024-11-09 04:50:57,657 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 123 proven. 6 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-09 04:50:57,657 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:50:57,848 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 33 proven. 6 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 04:50:57,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887170746] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:50:57,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 04:50:57,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 10, 7, 8, 7] total 19 [2024-11-09 04:50:57,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178737459] [2024-11-09 04:50:57,849 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 04:50:57,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 04:50:57,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:50:57,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 04:50:57,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2024-11-09 04:50:57,852 INFO L87 Difference]: Start difference. First operand 562 states and 811 transitions. Second operand has 19 states, 16 states have (on average 6.6875) internal successors, (107), 18 states have internal predecessors, (107), 8 states have call successors, (31), 5 states have call predecessors, (31), 8 states have return successors, (31), 6 states have call predecessors, (31), 8 states have call successors, (31) [2024-11-09 04:51:00,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:51:00,317 INFO L93 Difference]: Finished difference Result 1145 states and 1641 transitions. [2024-11-09 04:51:00,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 04:51:00,318 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 6.6875) internal successors, (107), 18 states have internal predecessors, (107), 8 states have call successors, (31), 5 states have call predecessors, (31), 8 states have return successors, (31), 6 states have call predecessors, (31), 8 states have call successors, (31) Word has length 121 [2024-11-09 04:51:00,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:51:00,320 INFO L225 Difference]: With dead ends: 1145 [2024-11-09 04:51:00,320 INFO L226 Difference]: Without dead ends: 586 [2024-11-09 04:51:00,322 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 729 GetRequests, 699 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2024-11-09 04:51:00,322 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 415 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:51:00,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 337 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 04:51:00,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2024-11-09 04:51:00,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 363. [2024-11-09 04:51:00,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 326 states have (on average 1.3987730061349692) internal successors, (456), 326 states have internal predecessors, (456), 28 states have call successors, (28), 8 states have call predecessors, (28), 8 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-09 04:51:00,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 512 transitions. [2024-11-09 04:51:00,395 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 512 transitions. Word has length 121 [2024-11-09 04:51:00,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:51:00,395 INFO L471 AbstractCegarLoop]: Abstraction has 363 states and 512 transitions. [2024-11-09 04:51:00,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 6.6875) internal successors, (107), 18 states have internal predecessors, (107), 8 states have call successors, (31), 5 states have call predecessors, (31), 8 states have return successors, (31), 6 states have call predecessors, (31), 8 states have call successors, (31) [2024-11-09 04:51:00,396 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 512 transitions. [2024-11-09 04:51:00,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-09 04:51:00,398 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:51:00,398 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:51:00,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2024-11-09 04:51:00,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 04:51:00,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:51:01,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:51:01,002 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:51:01,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:51:01,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1660963786, now seen corresponding path program 1 times [2024-11-09 04:51:01,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:51:01,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319977080] [2024-11-09 04:51:01,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:51:01,004 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 [2024-11-09 04:51:01,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:51:01,005 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:51:01,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:51:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:51:01,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 04:51:01,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:51:01,446 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 [2024-11-09 04:51:01,513 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 25 treesize of output 24 [2024-11-09 04:51:01,628 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:01,629 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 35 treesize of output 37 [2024-11-09 04:51:01,946 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:01,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 59 [2024-11-09 04:51:02,116 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 85 treesize of output 65 [2024-11-09 04:51:02,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:51:02,132 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:02,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 121 [2024-11-09 04:51:02,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 53 [2024-11-09 04:51:02,685 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:02,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 147 treesize of output 122 [2024-11-09 04:51:03,052 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:03,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 155 treesize of output 133 [2024-11-09 04:51:03,782 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:03,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 172 treesize of output 84 [2024-11-09 04:51:03,965 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-09 04:51:03,966 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:51:03,966 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:51:03,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [319977080] [2024-11-09 04:51:03,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [319977080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:51:03,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:51:03,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-09 04:51:03,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504448889] [2024-11-09 04:51:03,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:51:03,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 04:51:03,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:51:03,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 04:51:03,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2024-11-09 04:51:03,968 INFO L87 Difference]: Start difference. First operand 363 states and 512 transitions. Second operand has 15 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-09 04:51:10,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:51:10,830 INFO L93 Difference]: Finished difference Result 1057 states and 1490 transitions. [2024-11-09 04:51:10,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 04:51:10,832 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 121 [2024-11-09 04:51:10,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:51:10,835 INFO L225 Difference]: With dead ends: 1057 [2024-11-09 04:51:10,835 INFO L226 Difference]: Without dead ends: 697 [2024-11-09 04:51:10,836 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2024-11-09 04:51:10,837 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 787 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 1499 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 1599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:51:10,837 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 830 Invalid, 1599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1499 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2024-11-09 04:51:10,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2024-11-09 04:51:10,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 355. [2024-11-09 04:51:10,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 318 states have (on average 1.3962264150943395) internal successors, (444), 318 states have internal predecessors, (444), 28 states have call successors, (28), 8 states have call predecessors, (28), 8 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-09 04:51:10,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 500 transitions. [2024-11-09 04:51:10,923 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 500 transitions. Word has length 121 [2024-11-09 04:51:10,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:51:10,923 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 500 transitions. [2024-11-09 04:51:10,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.2) internal successors, (63), 15 states have internal predecessors, (63), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-09 04:51:10,924 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 500 transitions. [2024-11-09 04:51:10,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-09 04:51:10,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:51:10,925 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:51:10,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:51:11,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:51:11,127 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:51:11,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:51:11,127 INFO L85 PathProgramCache]: Analyzing trace with hash 133320139, now seen corresponding path program 1 times [2024-11-09 04:51:11,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:51:11,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456391595] [2024-11-09 04:51:11,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:51:11,128 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 [2024-11-09 04:51:11,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:51:11,129 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:51:11,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:51:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:51:11,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 04:51:11,516 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:51:11,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 04:51:11,576 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 [2024-11-09 04:51:11,626 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 27 treesize of output 26 [2024-11-09 04:51:11,669 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 81 treesize of output 61 [2024-11-09 04:51:11,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:51:11,676 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:11,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 89 [2024-11-09 04:51:11,788 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:11,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 53 [2024-11-09 04:51:11,880 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:11,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 64 [2024-11-09 04:51:12,024 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:12,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 68 treesize of output 28 [2024-11-09 04:51:12,064 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 123 proven. 6 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-09 04:51:12,064 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:51:12,430 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 33 proven. 6 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 04:51:12,431 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:51:12,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456391595] [2024-11-09 04:51:12,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456391595] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:51:12,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1803901902] [2024-11-09 04:51:12,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:51:12,431 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:51:12,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:51:12,432 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:51:12,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2024-11-09 04:51:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:51:13,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-09 04:51:13,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:51:13,686 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 [2024-11-09 04:51:14,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2024-11-09 04:51:14,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 40 [2024-11-09 04:51:14,839 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:14,839 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 1 case distinctions, treesize of input 69 treesize of output 51 [2024-11-09 04:51:15,290 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:15,290 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 3 case distinctions, treesize of input 77 treesize of output 62 [2024-11-09 04:51:15,821 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:15,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 85 treesize of output 73 [2024-11-09 04:51:16,397 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:16,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 96 treesize of output 76 [2024-11-09 04:51:16,828 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:16,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 93 treesize of output 84 [2024-11-09 04:51:17,623 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:17,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 102 treesize of output 96 [2024-11-09 04:51:17,889 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 148 treesize of output 108 [2024-11-09 04:51:17,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:51:17,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 8 select indices, 8 select index equivalence classes, 37 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 172 [2024-11-09 04:51:18,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 51 [2024-11-09 04:51:19,055 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:19,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 248 treesize of output 191 [2024-11-09 04:51:19,704 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:19,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 55 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 256 treesize of output 202 [2024-11-09 04:51:20,233 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:20,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 273 treesize of output 137 [2024-11-09 04:51:20,461 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 320 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-09 04:51:20,462 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:51:20,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1803901902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:51:20,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 04:51:20,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11, 8] total 31 [2024-11-09 04:51:20,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656143342] [2024-11-09 04:51:20,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:51:20,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 04:51:20,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:51:20,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 04:51:20,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=779, Unknown=0, NotChecked=0, Total=930 [2024-11-09 04:51:20,465 INFO L87 Difference]: Start difference. First operand 355 states and 500 transitions. Second operand has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 16 states have internal predecessors, (69), 6 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-09 04:51:25,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:51:25,757 INFO L93 Difference]: Finished difference Result 843 states and 1164 transitions. [2024-11-09 04:51:25,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 04:51:25,758 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 16 states have internal predecessors, (69), 6 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 121 [2024-11-09 04:51:25,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:51:25,760 INFO L225 Difference]: With dead ends: 843 [2024-11-09 04:51:25,760 INFO L226 Difference]: Without dead ends: 491 [2024-11-09 04:51:25,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 329 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=196, Invalid=994, Unknown=0, NotChecked=0, Total=1190 [2024-11-09 04:51:25,762 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 484 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-09 04:51:25,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 564 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-09 04:51:25,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2024-11-09 04:51:25,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 375. [2024-11-09 04:51:25,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 335 states have (on average 1.3761194029850747) internal successors, (461), 335 states have internal predecessors, (461), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-09 04:51:25,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 517 transitions. [2024-11-09 04:51:25,863 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 517 transitions. Word has length 121 [2024-11-09 04:51:25,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:51:25,864 INFO L471 AbstractCegarLoop]: Abstraction has 375 states and 517 transitions. [2024-11-09 04:51:25,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.0588235294117645) internal successors, (69), 16 states have internal predecessors, (69), 6 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-09 04:51:25,864 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 517 transitions. [2024-11-09 04:51:25,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-09 04:51:25,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:51:25,867 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:51:25,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:51:26,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2024-11-09 04:51:26,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 04:51:26,268 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:51:26,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:51:26,268 INFO L85 PathProgramCache]: Analyzing trace with hash -484622525, now seen corresponding path program 1 times [2024-11-09 04:51:26,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:51:26,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69897930] [2024-11-09 04:51:26,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:51:26,269 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 [2024-11-09 04:51:26,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:51:26,270 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:51:26,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2024-11-09 04:51:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:51:26,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 04:51:26,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:51:26,698 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 [2024-11-09 04:51:26,743 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 [2024-11-09 04:51:26,877 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:26,877 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 37 treesize of output 39 [2024-11-09 04:51:26,934 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 91 treesize of output 69 [2024-11-09 04:51:26,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:51:26,945 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:26,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 107 [2024-11-09 04:51:26,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 70 treesize of output 34 [2024-11-09 04:51:27,116 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:27,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 64 [2024-11-09 04:51:27,240 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:27,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 64 treesize of output 75 [2024-11-09 04:51:27,641 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:27,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 92 treesize of output 46 [2024-11-09 04:51:27,714 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 123 proven. 6 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-09 04:51:27,714 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:51:28,089 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-09 04:51:28,089 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:51:28,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69897930] [2024-11-09 04:51:28,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69897930] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 04:51:28,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 04:51:28,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 16 [2024-11-09 04:51:28,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282521312] [2024-11-09 04:51:28,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:51:28,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 04:51:28,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:51:28,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 04:51:28,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-09 04:51:28,091 INFO L87 Difference]: Start difference. First operand 375 states and 517 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 04:51:29,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:51:29,394 INFO L93 Difference]: Finished difference Result 1021 states and 1415 transitions. [2024-11-09 04:51:29,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:51:29,394 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 121 [2024-11-09 04:51:29,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:51:29,396 INFO L225 Difference]: With dead ends: 1021 [2024-11-09 04:51:29,396 INFO L226 Difference]: Without dead ends: 649 [2024-11-09 04:51:29,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-11-09 04:51:29,398 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 141 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:51:29,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 633 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 04:51:29,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2024-11-09 04:51:29,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 540. [2024-11-09 04:51:29,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 500 states have (on average 1.414) internal successors, (707), 500 states have internal predecessors, (707), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-09 04:51:29,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 763 transitions. [2024-11-09 04:51:29,503 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 763 transitions. Word has length 121 [2024-11-09 04:51:29,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:51:29,504 INFO L471 AbstractCegarLoop]: Abstraction has 540 states and 763 transitions. [2024-11-09 04:51:29,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 04:51:29,504 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 763 transitions. [2024-11-09 04:51:29,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-09 04:51:29,506 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:51:29,507 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:51:29,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2024-11-09 04:51:29,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:51:29,708 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:51:29,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:51:29,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1856336492, now seen corresponding path program 1 times [2024-11-09 04:51:29,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:51:29,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306022368] [2024-11-09 04:51:29,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:51:29,709 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 [2024-11-09 04:51:29,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:51:29,710 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:51:29,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2024-11-09 04:51:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:51:30,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 04:51:30,144 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:51:30,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 04:51:30,150 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 [2024-11-09 04:51:30,201 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 25 treesize of output 24 [2024-11-09 04:51:30,439 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 56 treesize of output 55 [2024-11-09 04:51:30,508 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 125 treesize of output 97 [2024-11-09 04:51:30,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:51:30,523 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:30,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 97 treesize of output 137 [2024-11-09 04:51:30,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:51:30,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 74 [2024-11-09 04:51:31,232 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 225 treesize of output 181 [2024-11-09 04:51:31,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:51:31,243 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:31,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 181 treesize of output 203 [2024-11-09 04:51:31,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 189 treesize of output 156 [2024-11-09 04:51:32,206 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:32,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 404 treesize of output 250 [2024-11-09 04:51:33,799 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:33,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 421 treesize of output 201 [2024-11-09 04:51:34,137 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2024-11-09 04:51:34,138 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:51:34,138 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:51:34,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306022368] [2024-11-09 04:51:34,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306022368] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:51:34,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:51:34,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-09 04:51:34,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221297771] [2024-11-09 04:51:34,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:51:34,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 04:51:34,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:51:34,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 04:51:34,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-09 04:51:34,140 INFO L87 Difference]: Start difference. First operand 540 states and 763 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-09 04:51:44,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:51:44,542 INFO L93 Difference]: Finished difference Result 1448 states and 2018 transitions. [2024-11-09 04:51:44,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 04:51:44,544 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 121 [2024-11-09 04:51:44,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:51:44,548 INFO L225 Difference]: With dead ends: 1448 [2024-11-09 04:51:44,548 INFO L226 Difference]: Without dead ends: 911 [2024-11-09 04:51:44,549 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2024-11-09 04:51:44,550 INFO L432 NwaCegarLoop]: 183 mSDtfsCounter, 851 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 2065 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 2167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 2065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:51:44,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 1251 Invalid, 2167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 2065 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2024-11-09 04:51:44,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2024-11-09 04:51:44,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 530. [2024-11-09 04:51:44,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 490 states have (on average 1.4183673469387754) internal successors, (695), 490 states have internal predecessors, (695), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-09 04:51:44,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 751 transitions. [2024-11-09 04:51:44,687 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 751 transitions. Word has length 121 [2024-11-09 04:51:44,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:51:44,688 INFO L471 AbstractCegarLoop]: Abstraction has 530 states and 751 transitions. [2024-11-09 04:51:44,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-09 04:51:44,688 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 751 transitions. [2024-11-09 04:51:44,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-09 04:51:44,690 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:51:44,691 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:51:44,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2024-11-09 04:51:44,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:51:44,892 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:51:44,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:51:44,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1913442186, now seen corresponding path program 1 times [2024-11-09 04:51:44,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:51:44,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906394579] [2024-11-09 04:51:44,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:51:44,894 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 [2024-11-09 04:51:44,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:51:44,898 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:51:44,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:51:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:51:45,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 04:51:45,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:51:45,372 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 [2024-11-09 04:51:45,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 04:51:45,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 04:51:45,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2024-11-09 04:51:45,469 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 75 treesize of output 57 [2024-11-09 04:51:45,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:51:45,477 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:45,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 89 [2024-11-09 04:51:45,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:51:45,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 31 [2024-11-09 04:51:45,734 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:45,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 123 treesize of output 101 [2024-11-09 04:51:45,903 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:45,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 131 treesize of output 112 [2024-11-09 04:51:46,357 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:46,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 149 treesize of output 73 [2024-11-09 04:51:46,595 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-09 04:51:46,595 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:51:46,595 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:51:46,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906394579] [2024-11-09 04:51:46,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906394579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:51:46,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:51:46,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-09 04:51:46,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335443847] [2024-11-09 04:51:46,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:51:46,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 04:51:46,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:51:46,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 04:51:46,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-09 04:51:46,598 INFO L87 Difference]: Start difference. First operand 530 states and 751 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 04:51:53,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:51:53,253 INFO L93 Difference]: Finished difference Result 1426 states and 1994 transitions. [2024-11-09 04:51:53,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 04:51:53,255 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 121 [2024-11-09 04:51:53,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:51:53,257 INFO L225 Difference]: With dead ends: 1426 [2024-11-09 04:51:53,257 INFO L226 Difference]: Without dead ends: 899 [2024-11-09 04:51:53,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-09 04:51:53,259 INFO L432 NwaCegarLoop]: 252 mSDtfsCounter, 469 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 1509 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 1614 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:51:53,259 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 1614 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1509 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-11-09 04:51:53,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2024-11-09 04:51:53,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 563. [2024-11-09 04:51:53,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 523 states have (on average 1.4206500956022945) internal successors, (743), 523 states have internal predecessors, (743), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-09 04:51:53,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 799 transitions. [2024-11-09 04:51:53,385 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 799 transitions. Word has length 121 [2024-11-09 04:51:53,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:51:53,385 INFO L471 AbstractCegarLoop]: Abstraction has 563 states and 799 transitions. [2024-11-09 04:51:53,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 04:51:53,386 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 799 transitions. [2024-11-09 04:51:53,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-09 04:51:53,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:51:53,388 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:51:53,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:51:53,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:51:53,589 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:51:53,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:51:53,589 INFO L85 PathProgramCache]: Analyzing trace with hash 2108814892, now seen corresponding path program 1 times [2024-11-09 04:51:53,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:51:53,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [323366348] [2024-11-09 04:51:53,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:51:53,590 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 [2024-11-09 04:51:53,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:51:53,594 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:51:53,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2024-11-09 04:51:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:51:54,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 04:51:54,021 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:51:54,025 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 [2024-11-09 04:51:54,084 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 [2024-11-09 04:51:54,133 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 25 treesize of output 24 [2024-11-09 04:51:54,343 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 56 treesize of output 46 [2024-11-09 04:51:54,422 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 109 treesize of output 85 [2024-11-09 04:51:54,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:51:54,433 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:54,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 85 treesize of output 133 [2024-11-09 04:51:54,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 54 treesize of output 49 [2024-11-09 04:51:55,502 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 197 treesize of output 163 [2024-11-09 04:51:55,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:51:55,517 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:55,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 163 treesize of output 205 [2024-11-09 04:51:55,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 143 [2024-11-09 04:51:56,570 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:56,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 348 treesize of output 254 [2024-11-09 04:51:58,656 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:51:58,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 366 treesize of output 206 [2024-11-09 04:52:00,243 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-09 04:52:00,243 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:52:00,243 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:52:00,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [323366348] [2024-11-09 04:52:00,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [323366348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:52:00,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:52:00,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-09 04:52:00,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779383589] [2024-11-09 04:52:00,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:52:00,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 04:52:00,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:52:00,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 04:52:00,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2024-11-09 04:52:00,246 INFO L87 Difference]: Start difference. First operand 563 states and 799 transitions. Second operand has 16 states, 16 states have (on average 3.75) internal successors, (60), 16 states have internal predecessors, (60), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-09 04:52:52,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:52,086 INFO L93 Difference]: Finished difference Result 1689 states and 2360 transitions. [2024-11-09 04:52:52,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 04:52:52,087 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.75) internal successors, (60), 16 states have internal predecessors, (60), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 121 [2024-11-09 04:52:52,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:52,094 INFO L225 Difference]: With dead ends: 1689 [2024-11-09 04:52:52,095 INFO L226 Difference]: Without dead ends: 1129 [2024-11-09 04:52:52,095 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2024-11-09 04:52:52,096 INFO L432 NwaCegarLoop]: 240 mSDtfsCounter, 779 mSDsluCounter, 1819 mSDsCounter, 0 mSdLazyCounter, 3869 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 2059 SdHoareTripleChecker+Invalid, 3925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 3869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:52,096 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 2059 Invalid, 3925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 3869 Invalid, 0 Unknown, 0 Unchecked, 50.2s Time] [2024-11-09 04:52:52,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2024-11-09 04:52:52,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 569. [2024-11-09 04:52:52,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 529 states have (on average 1.4234404536862004) internal successors, (753), 529 states have internal predecessors, (753), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-09 04:52:52,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 809 transitions. [2024-11-09 04:52:52,261 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 809 transitions. Word has length 121 [2024-11-09 04:52:52,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:52,262 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 809 transitions. [2024-11-09 04:52:52,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.75) internal successors, (60), 16 states have internal predecessors, (60), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-09 04:52:52,262 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 809 transitions. [2024-11-09 04:52:52,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-09 04:52:52,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:52,264 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:52:52,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2024-11-09 04:52:52,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:52:52,465 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:52:52,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:52,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1291166442, now seen corresponding path program 1 times [2024-11-09 04:52:52,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:52,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [108251671] [2024-11-09 04:52:52,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:52,466 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 [2024-11-09 04:52:52,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:52,468 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:52:52,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2024-11-09 04:52:53,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:53,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 04:52:53,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:53,042 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 [2024-11-09 04:52:53,272 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 41 treesize of output 19 [2024-11-09 04:52:53,396 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 41 treesize of output 19 [2024-11-09 04:52:53,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 38 [2024-11-09 04:52:53,779 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 99 treesize of output 77 [2024-11-09 04:52:53,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:52:53,793 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:52:53,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 115 [2024-11-09 04:52:53,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:52:53,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 52 [2024-11-09 04:52:54,650 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 189 treesize of output 157 [2024-11-09 04:52:54,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:52:54,661 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:52:54,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 157 treesize of output 189 [2024-11-09 04:52:55,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 150 [2024-11-09 04:52:55,682 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:52:55,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 332 treesize of output 241 [2024-11-09 04:52:57,771 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:52:57,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 350 treesize of output 202 [2024-11-09 04:52:59,695 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 197 proven. 15 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-11-09 04:52:59,695 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:53:00,779 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-09 04:53:00,780 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:53:00,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [108251671] [2024-11-09 04:53:00,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [108251671] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 04:53:00,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 04:53:00,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [17] total 22 [2024-11-09 04:53:00,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4151476] [2024-11-09 04:53:00,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:53:00,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 04:53:00,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:53:00,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 04:53:00,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2024-11-09 04:53:00,782 INFO L87 Difference]: Start difference. First operand 569 states and 809 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 04:53:04,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:53:04,276 INFO L93 Difference]: Finished difference Result 1240 states and 1749 transitions. [2024-11-09 04:53:04,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 04:53:04,277 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 121 [2024-11-09 04:53:04,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:53:04,280 INFO L225 Difference]: With dead ends: 1240 [2024-11-09 04:53:04,280 INFO L226 Difference]: Without dead ends: 674 [2024-11-09 04:53:04,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 218 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2024-11-09 04:53:04,281 INFO L432 NwaCegarLoop]: 248 mSDtfsCounter, 138 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-09 04:53:04,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 1368 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-09 04:53:04,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2024-11-09 04:53:04,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 530. [2024-11-09 04:53:04,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 490 states have (on average 1.4183673469387754) internal successors, (695), 490 states have internal predecessors, (695), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-09 04:53:04,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 751 transitions. [2024-11-09 04:53:04,440 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 751 transitions. Word has length 121 [2024-11-09 04:53:04,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:53:04,441 INFO L471 AbstractCegarLoop]: Abstraction has 530 states and 751 transitions. [2024-11-09 04:53:04,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 04:53:04,441 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 751 transitions. [2024-11-09 04:53:04,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-09 04:53:04,443 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:53:04,444 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:53:04,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2024-11-09 04:53:04,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:53:04,648 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:53:04,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:53:04,648 INFO L85 PathProgramCache]: Analyzing trace with hash 865076326, now seen corresponding path program 1 times [2024-11-09 04:53:04,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:53:04,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342347277] [2024-11-09 04:53:04,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:53:04,649 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 [2024-11-09 04:53:04,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:53:04,651 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:53:04,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:53:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:53:05,096 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 04:53:05,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:53:05,111 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 [2024-11-09 04:53:05,172 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 [2024-11-09 04:53:05,347 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:05,347 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 37 treesize of output 39 [2024-11-09 04:53:05,416 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 91 treesize of output 69 [2024-11-09 04:53:05,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:53:05,425 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:05,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 107 [2024-11-09 04:53:05,591 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:05,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 66 [2024-11-09 04:53:05,747 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:05,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 70 treesize of output 28 [2024-11-09 04:53:05,792 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 123 proven. 6 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-09 04:53:05,793 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:53:06,157 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 33 proven. 6 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 04:53:06,157 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:53:06,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342347277] [2024-11-09 04:53:06,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342347277] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:53:06,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1845289572] [2024-11-09 04:53:06,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:53:06,158 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:53:06,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:53:06,160 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:53:06,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2024-11-09 04:53:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:53:07,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-09 04:53:07,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:53:07,752 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 [2024-11-09 04:53:08,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2024-11-09 04:53:08,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 40 [2024-11-09 04:53:09,092 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:09,092 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 1 case distinctions, treesize of input 69 treesize of output 51 [2024-11-09 04:53:09,768 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:09,769 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 3 case distinctions, treesize of input 77 treesize of output 62 [2024-11-09 04:53:10,433 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:10,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 85 treesize of output 73 [2024-11-09 04:53:11,143 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:11,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 93 treesize of output 84 [2024-11-09 04:53:12,046 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:12,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 102 treesize of output 96 [2024-11-09 04:53:12,355 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 148 treesize of output 108 [2024-11-09 04:53:12,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:53:12,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 7 select indices, 7 select index equivalence classes, 29 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 162 [2024-11-09 04:53:12,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:53:12,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 29 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 89 [2024-11-09 04:53:13,713 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:13,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 242 treesize of output 186 [2024-11-09 04:53:14,900 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:14,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 303 treesize of output 155 [2024-11-09 04:53:15,098 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 332 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 04:53:15,099 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:53:15,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1845289572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:53:15,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 04:53:15,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11, 8] total 31 [2024-11-09 04:53:15,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004493667] [2024-11-09 04:53:15,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:53:15,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 04:53:15,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:53:15,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 04:53:15,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=780, Unknown=0, NotChecked=0, Total=930 [2024-11-09 04:53:15,102 INFO L87 Difference]: Start difference. First operand 530 states and 751 transitions. Second operand has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 16 states have internal predecessors, (72), 7 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-09 04:53:24,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:53:24,514 INFO L93 Difference]: Finished difference Result 1801 states and 2541 transitions. [2024-11-09 04:53:24,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 04:53:24,515 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 16 states have internal predecessors, (72), 7 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 121 [2024-11-09 04:53:24,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:53:24,521 INFO L225 Difference]: With dead ends: 1801 [2024-11-09 04:53:24,521 INFO L226 Difference]: Without dead ends: 1274 [2024-11-09 04:53:24,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 327 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=168, Invalid=888, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 04:53:24,523 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 765 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 1509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2024-11-09 04:53:24,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 887 Invalid, 1509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2024-11-09 04:53:24,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2024-11-09 04:53:24,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 1061. [2024-11-09 04:53:24,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 978 states have (on average 1.4151329243353783) internal successors, (1384), 980 states have internal predecessors, (1384), 56 states have call successors, (56), 26 states have call predecessors, (56), 26 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 04:53:24,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1496 transitions. [2024-11-09 04:53:24,877 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1496 transitions. Word has length 121 [2024-11-09 04:53:24,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:53:24,877 INFO L471 AbstractCegarLoop]: Abstraction has 1061 states and 1496 transitions. [2024-11-09 04:53:24,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 16 states have internal predecessors, (72), 7 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-09 04:53:24,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1496 transitions. [2024-11-09 04:53:24,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 04:53:24,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:53:24,880 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:53:24,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:53:25,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2024-11-09 04:53:25,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 04:53:25,281 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:53:25,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:53:25,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1173283612, now seen corresponding path program 1 times [2024-11-09 04:53:25,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:53:25,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300849671] [2024-11-09 04:53:25,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:53:25,283 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 [2024-11-09 04:53:25,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:53:25,286 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:53:25,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2024-11-09 04:53:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:53:25,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-09 04:53:25,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:53:25,812 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 [2024-11-09 04:53:25,815 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 [2024-11-09 04:53:25,879 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 [2024-11-09 04:53:25,935 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 25 treesize of output 24 [2024-11-09 04:53:26,107 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:26,107 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 35 treesize of output 37 [2024-11-09 04:53:26,348 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:26,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 40 [2024-11-09 04:53:26,671 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 66 treesize of output 59 [2024-11-09 04:53:26,934 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 111 treesize of output 85 [2024-11-09 04:53:26,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:53:26,951 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:26,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 85 treesize of output 143 [2024-11-09 04:53:27,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 65 [2024-11-09 04:53:28,261 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:28,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 214 treesize of output 159 [2024-11-09 04:53:28,743 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:28,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 222 treesize of output 170 [2024-11-09 04:53:30,036 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:30,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 238 treesize of output 102 [2024-11-09 04:53:30,321 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-09 04:53:30,321 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:53:30,321 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:53:30,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300849671] [2024-11-09 04:53:30,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1300849671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:53:30,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:53:30,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-09 04:53:30,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030453104] [2024-11-09 04:53:30,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:53:30,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 04:53:30,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:53:30,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 04:53:30,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2024-11-09 04:53:30,324 INFO L87 Difference]: Start difference. First operand 1061 states and 1496 transitions. Second operand has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-09 04:53:42,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:53:42,842 INFO L93 Difference]: Finished difference Result 2621 states and 3670 transitions. [2024-11-09 04:53:42,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 04:53:42,843 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 123 [2024-11-09 04:53:42,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:53:42,849 INFO L225 Difference]: With dead ends: 2621 [2024-11-09 04:53:42,849 INFO L226 Difference]: Without dead ends: 1563 [2024-11-09 04:53:42,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2024-11-09 04:53:42,851 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 914 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 1782 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 1886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:53:42,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 1046 Invalid, 1886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1782 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2024-11-09 04:53:42,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2024-11-09 04:53:43,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1319. [2024-11-09 04:53:43,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1229 states have (on average 1.4239218877135882) internal successors, (1750), 1234 states have internal predecessors, (1750), 60 states have call successors, (60), 29 states have call predecessors, (60), 29 states have return successors, (60), 55 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-09 04:53:43,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1870 transitions. [2024-11-09 04:53:43,429 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1870 transitions. Word has length 123 [2024-11-09 04:53:43,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:53:43,430 INFO L471 AbstractCegarLoop]: Abstraction has 1319 states and 1870 transitions. [2024-11-09 04:53:43,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-09 04:53:43,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1870 transitions. [2024-11-09 04:53:43,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 04:53:43,435 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:53:43,435 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:53:43,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2024-11-09 04:53:43,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:53:43,636 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:53:43,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:53:43,637 INFO L85 PathProgramCache]: Analyzing trace with hash -780724667, now seen corresponding path program 1 times [2024-11-09 04:53:43,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:53:43,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563561158] [2024-11-09 04:53:43,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:53:43,638 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 [2024-11-09 04:53:43,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:53:43,639 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:53:43,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:53:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:53:44,127 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 04:53:44,131 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:53:44,137 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 [2024-11-09 04:53:44,214 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 27 treesize of output 26 [2024-11-09 04:53:44,327 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:44,327 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 37 treesize of output 39 [2024-11-09 04:53:44,449 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:44,450 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 60 treesize of output 30 [2024-11-09 04:53:44,474 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 04:53:44,475 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:53:44,475 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:53:44,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [563561158] [2024-11-09 04:53:44,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [563561158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:53:44,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:53:44,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 04:53:44,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798278566] [2024-11-09 04:53:44,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:53:44,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 04:53:44,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:53:44,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 04:53:44,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-09 04:53:44,477 INFO L87 Difference]: Start difference. First operand 1319 states and 1870 transitions. Second operand has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 10 states have internal predecessors, (59), 2 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 04:53:49,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:53:49,031 INFO L93 Difference]: Finished difference Result 2955 states and 4108 transitions. [2024-11-09 04:53:49,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-09 04:53:49,032 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 10 states have internal predecessors, (59), 2 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 123 [2024-11-09 04:53:49,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:53:49,038 INFO L225 Difference]: With dead ends: 2955 [2024-11-09 04:53:49,039 INFO L226 Difference]: Without dead ends: 1639 [2024-11-09 04:53:49,050 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2024-11-09 04:53:49,055 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 324 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 1357 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 1429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-09 04:53:49,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 540 Invalid, 1429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1357 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-09 04:53:49,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2024-11-09 04:53:49,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1319. [2024-11-09 04:53:49,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1229 states have (on average 1.417412530512612) internal successors, (1742), 1234 states have internal predecessors, (1742), 60 states have call successors, (60), 29 states have call predecessors, (60), 29 states have return successors, (60), 55 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-09 04:53:49,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1862 transitions. [2024-11-09 04:53:49,661 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1862 transitions. Word has length 123 [2024-11-09 04:53:49,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:53:49,662 INFO L471 AbstractCegarLoop]: Abstraction has 1319 states and 1862 transitions. [2024-11-09 04:53:49,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.555555555555555) internal successors, (59), 10 states have internal predecessors, (59), 2 states have call successors, (14), 1 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 04:53:49,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1862 transitions. [2024-11-09 04:53:49,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 04:53:49,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:53:49,666 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:53:49,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:53:49,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:53:49,867 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:53:49,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:53:49,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1520097923, now seen corresponding path program 1 times [2024-11-09 04:53:49,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:53:49,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896101765] [2024-11-09 04:53:49,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:53:49,869 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 [2024-11-09 04:53:49,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:53:49,870 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:53:49,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2024-11-09 04:53:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:53:50,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 04:53:50,430 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:53:50,435 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 [2024-11-09 04:53:50,498 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 [2024-11-09 04:53:50,553 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 [2024-11-09 04:53:50,672 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 46 treesize of output 33 [2024-11-09 04:53:50,760 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 82 treesize of output 62 [2024-11-09 04:53:50,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:53:50,768 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:50,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 90 [2024-11-09 04:53:50,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 35 [2024-11-09 04:53:51,228 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 126 treesize of output 102 [2024-11-09 04:53:51,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:53:51,240 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:51,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 136 [2024-11-09 04:53:51,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 127 treesize of output 83 [2024-11-09 04:53:51,846 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:51,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 206 treesize of output 154 [2024-11-09 04:53:52,962 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:52,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 223 treesize of output 123 [2024-11-09 04:53:53,257 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-11-09 04:53:53,257 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:53:53,257 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:53:53,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896101765] [2024-11-09 04:53:53,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896101765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:53:53,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:53:53,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-09 04:53:53,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431602959] [2024-11-09 04:53:53,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:53:53,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 04:53:53,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:53:53,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 04:53:53,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-09 04:53:53,260 INFO L87 Difference]: Start difference. First operand 1319 states and 1862 transitions. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 04:54:03,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:54:03,484 INFO L93 Difference]: Finished difference Result 3685 states and 5127 transitions. [2024-11-09 04:54:03,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 04:54:03,485 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 123 [2024-11-09 04:54:03,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:54:03,492 INFO L225 Difference]: With dead ends: 3685 [2024-11-09 04:54:03,492 INFO L226 Difference]: Without dead ends: 2369 [2024-11-09 04:54:03,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2024-11-09 04:54:03,494 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 650 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 2104 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 2170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2024-11-09 04:54:03,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 1213 Invalid, 2170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2104 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2024-11-09 04:54:03,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2369 states. [2024-11-09 04:54:04,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2369 to 1299. [2024-11-09 04:54:04,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1299 states, 1209 states have (on average 1.4210090984284534) internal successors, (1718), 1214 states have internal predecessors, (1718), 60 states have call successors, (60), 29 states have call predecessors, (60), 29 states have return successors, (60), 55 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-09 04:54:04,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1838 transitions. [2024-11-09 04:54:04,073 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1838 transitions. Word has length 123 [2024-11-09 04:54:04,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:54:04,074 INFO L471 AbstractCegarLoop]: Abstraction has 1299 states and 1838 transitions. [2024-11-09 04:54:04,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 04:54:04,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1838 transitions. [2024-11-09 04:54:04,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 04:54:04,079 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:04,080 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:54:04,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2024-11-09 04:54:04,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:54:04,281 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:54:04,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:04,281 INFO L85 PathProgramCache]: Analyzing trace with hash 355635162, now seen corresponding path program 1 times [2024-11-09 04:54:04,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:54:04,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73470208] [2024-11-09 04:54:04,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:04,282 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 [2024-11-09 04:54:04,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:54:04,284 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:54:04,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2024-11-09 04:54:04,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:04,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-09 04:54:04,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:54:04,862 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 [2024-11-09 04:54:04,867 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 [2024-11-09 04:54:04,961 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 25 treesize of output 24 [2024-11-09 04:54:05,145 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:54:05,145 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 [2024-11-09 04:54:05,283 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:54:05,283 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 35 treesize of output 37 [2024-11-09 04:54:05,499 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:54:05,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 40 [2024-11-09 04:54:05,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 68 [2024-11-09 04:54:06,090 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 111 treesize of output 85 [2024-11-09 04:54:06,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:54:06,102 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:54:06,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 85 treesize of output 157 [2024-11-09 04:54:06,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 79 [2024-11-09 04:54:07,177 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:54:07,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 213 treesize of output 158 [2024-11-09 04:54:07,618 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:54:07,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 221 treesize of output 169 [2024-11-09 04:54:08,826 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:54:08,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 237 treesize of output 101 [2024-11-09 04:54:09,069 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-09 04:54:09,069 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:54:09,070 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:54:09,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73470208] [2024-11-09 04:54:09,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [73470208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:54:09,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:54:09,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-09 04:54:09,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138951081] [2024-11-09 04:54:09,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:54:09,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 04:54:09,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:54:09,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 04:54:09,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2024-11-09 04:54:09,072 INFO L87 Difference]: Start difference. First operand 1299 states and 1838 transitions. Second operand has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-09 04:54:26,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:54:26,091 INFO L93 Difference]: Finished difference Result 3005 states and 4230 transitions. [2024-11-09 04:54:26,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 04:54:26,092 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 123 [2024-11-09 04:54:26,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:54:26,095 INFO L225 Difference]: With dead ends: 3005 [2024-11-09 04:54:26,096 INFO L226 Difference]: Without dead ends: 1709 [2024-11-09 04:54:26,097 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2024-11-09 04:54:26,097 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 605 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 2561 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 2608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:54:26,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 1367 Invalid, 2608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2561 Invalid, 0 Unknown, 0 Unchecked, 16.0s Time] [2024-11-09 04:54:26,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1709 states. [2024-11-09 04:54:26,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1709 to 1295. [2024-11-09 04:54:26,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1295 states, 1205 states have (on average 1.4190871369294606) internal successors, (1710), 1210 states have internal predecessors, (1710), 60 states have call successors, (60), 29 states have call predecessors, (60), 29 states have return successors, (60), 55 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-09 04:54:26,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 1830 transitions. [2024-11-09 04:54:26,506 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 1830 transitions. Word has length 123 [2024-11-09 04:54:26,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:54:26,506 INFO L471 AbstractCegarLoop]: Abstraction has 1295 states and 1830 transitions. [2024-11-09 04:54:26,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-09 04:54:26,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 1830 transitions. [2024-11-09 04:54:26,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 04:54:26,509 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:26,509 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:54:26,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2024-11-09 04:54:26,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:54:26,710 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:54:26,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:26,710 INFO L85 PathProgramCache]: Analyzing trace with hash -2011039032, now seen corresponding path program 1 times [2024-11-09 04:54:26,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:54:26,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [640771610] [2024-11-09 04:54:26,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:26,711 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 [2024-11-09 04:54:26,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:54:26,712 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:54:26,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:54:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:27,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 04:54:27,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:54:27,112 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-09 04:54:27,112 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:54:27,112 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:54:27,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [640771610] [2024-11-09 04:54:27,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [640771610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:54:27,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:54:27,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 04:54:27,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170443985] [2024-11-09 04:54:27,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:54:27,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 04:54:27,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:54:27,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 04:54:27,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:54:27,114 INFO L87 Difference]: Start difference. First operand 1295 states and 1830 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 04:54:27,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:54:27,491 INFO L93 Difference]: Finished difference Result 1313 states and 1851 transitions. [2024-11-09 04:54:27,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:54:27,492 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 123 [2024-11-09 04:54:27,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:54:27,495 INFO L225 Difference]: With dead ends: 1313 [2024-11-09 04:54:27,496 INFO L226 Difference]: Without dead ends: 1311 [2024-11-09 04:54:27,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:54:27,496 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 0 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:54:27,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 900 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:54:27,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2024-11-09 04:54:27,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 1311. [2024-11-09 04:54:27,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1311 states, 1221 states have (on average 1.4135954135954136) internal successors, (1726), 1226 states have internal predecessors, (1726), 60 states have call successors, (60), 29 states have call predecessors, (60), 29 states have return successors, (60), 55 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-09 04:54:27,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1846 transitions. [2024-11-09 04:54:27,878 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1846 transitions. Word has length 123 [2024-11-09 04:54:27,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:54:27,879 INFO L471 AbstractCegarLoop]: Abstraction has 1311 states and 1846 transitions. [2024-11-09 04:54:27,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 04:54:27,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1846 transitions. [2024-11-09 04:54:27,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 04:54:27,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:27,882 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:54:27,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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)] Forceful destruction successful, exit code 0 [2024-11-09 04:54:28,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:54:28,083 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:54:28,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:28,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1852375176, now seen corresponding path program 1 times [2024-11-09 04:54:28,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:54:28,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546622266] [2024-11-09 04:54:28,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:28,085 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 [2024-11-09 04:54:28,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:54:28,089 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:54:28,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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)] Waiting until timeout for monitored process [2024-11-09 04:54:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:28,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 04:54:28,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:54:28,686 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 [2024-11-09 04:54:28,755 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 [2024-11-09 04:54:28,817 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 27 treesize of output 26 [2024-11-09 04:54:28,867 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 81 treesize of output 61 [2024-11-09 04:54:28,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:54:28,876 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:54:28,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 89 [2024-11-09 04:54:28,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 28 [2024-11-09 04:54:29,020 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:54:29,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 51 [2024-11-09 04:54:29,135 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:54:29,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 62 [2024-11-09 04:54:29,493 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 123 proven. 6 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-09 04:54:29,493 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:54:29,870 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 33 proven. 6 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 04:54:29,870 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:54:29,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [546622266] [2024-11-09 04:54:29,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [546622266] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:54:29,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [894825155] [2024-11-09 04:54:29,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:29,871 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:54:29,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:54:29,873 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:54:29,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2024-11-09 04:54:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:31,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 04:54:31,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:54:31,451 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 [2024-11-09 04:54:31,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 17 [2024-11-09 04:54:31,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2024-11-09 04:54:32,098 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 77 treesize of output 55 [2024-11-09 04:54:32,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:54:32,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 77 [2024-11-09 04:54:32,334 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:54:32,334 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 3 case distinctions, treesize of input 52 treesize of output 49 [2024-11-09 04:54:32,504 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:54:32,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 56 [2024-11-09 04:54:32,922 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:54:32,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 67 treesize of output 39 [2024-11-09 04:54:32,929 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 173 proven. 6 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2024-11-09 04:54:32,929 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:54:33,207 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 33 proven. 6 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 04:54:33,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [894825155] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:54:33,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847289739] [2024-11-09 04:54:33,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:33,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:54:33,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:54:33,210 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:54:33,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-09 04:54:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:33,568 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 04:54:33,572 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:54:33,593 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 [2024-11-09 04:54:33,653 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 27 treesize of output 26 [2024-11-09 04:54:33,698 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 81 treesize of output 61 [2024-11-09 04:54:33,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:54:33,707 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:54:33,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 89 [2024-11-09 04:54:33,798 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:54:33,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 51 [2024-11-09 04:54:33,859 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:54:33,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 62 [2024-11-09 04:54:34,196 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 123 proven. 6 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-09 04:54:34,196 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:54:34,524 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 33 proven. 6 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 04:54:34,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847289739] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:54:34,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 04:54:34,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 12, 7, 11, 7] total 24 [2024-11-09 04:54:34,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820857962] [2024-11-09 04:54:34,525 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 04:54:34,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 04:54:34,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:54:34,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 04:54:34,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2024-11-09 04:54:34,529 INFO L87 Difference]: Start difference. First operand 1311 states and 1846 transitions. Second operand has 24 states, 21 states have (on average 6.619047619047619) internal successors, (139), 24 states have internal predecessors, (139), 8 states have call successors, (31), 5 states have call predecessors, (31), 8 states have return successors, (31), 5 states have call predecessors, (31), 8 states have call successors, (31) [2024-11-09 04:54:42,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:54:42,765 INFO L93 Difference]: Finished difference Result 3721 states and 5098 transitions. [2024-11-09 04:54:42,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-09 04:54:42,766 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 6.619047619047619) internal successors, (139), 24 states have internal predecessors, (139), 8 states have call successors, (31), 5 states have call predecessors, (31), 8 states have return successors, (31), 5 states have call predecessors, (31), 8 states have call successors, (31) Word has length 123 [2024-11-09 04:54:42,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:54:42,773 INFO L225 Difference]: With dead ends: 3721 [2024-11-09 04:54:42,773 INFO L226 Difference]: Without dead ends: 2413 [2024-11-09 04:54:42,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 703 SyntacticMatches, 7 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=526, Invalid=1454, Unknown=0, NotChecked=0, Total=1980 [2024-11-09 04:54:42,776 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 1155 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 1818 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1196 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 2025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 1818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-09 04:54:42,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1196 Valid, 744 Invalid, 2025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 1818 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-11-09 04:54:42,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2024-11-09 04:54:43,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 1311. [2024-11-09 04:54:43,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1311 states, 1221 states have (on average 1.4103194103194103) internal successors, (1722), 1226 states have internal predecessors, (1722), 60 states have call successors, (60), 29 states have call predecessors, (60), 29 states have return successors, (60), 55 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-09 04:54:43,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1842 transitions. [2024-11-09 04:54:43,216 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1842 transitions. Word has length 123 [2024-11-09 04:54:43,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:54:43,216 INFO L471 AbstractCegarLoop]: Abstraction has 1311 states and 1842 transitions. [2024-11-09 04:54:43,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 6.619047619047619) internal successors, (139), 24 states have internal predecessors, (139), 8 states have call successors, (31), 5 states have call predecessors, (31), 8 states have return successors, (31), 5 states have call predecessors, (31), 8 states have call successors, (31) [2024-11-09 04:54:43,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1842 transitions. [2024-11-09 04:54:43,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 04:54:43,220 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:43,220 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:54:43,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-09 04:54:43,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (33)] Ended with exit code 0 [2024-11-09 04:54:43,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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)] Forceful destruction successful, exit code 0 [2024-11-09 04:54:43,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:54:43,822 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:54:43,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:43,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1762533750, now seen corresponding path program 1 times [2024-11-09 04:54:43,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:54:43,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854838585] [2024-11-09 04:54:43,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:43,823 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 [2024-11-09 04:54:43,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:54:43,825 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:54:43,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:54:44,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:44,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-09 04:54:44,456 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:54:44,459 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 [2024-11-09 04:54:44,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 04:54:44,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 04:54:44,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 04:54:44,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 04:54:44,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-09 04:54:44,618 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 46 treesize of output 42 [2024-11-09 04:54:44,708 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 122 treesize of output 94 [2024-11-09 04:54:44,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:54:44,721 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:54:44,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 94 treesize of output 148 [2024-11-09 04:54:44,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 25 treesize of output 4 [2024-11-09 04:54:45,729 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:54:45,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 207 treesize of output 152 [2024-11-09 04:54:46,163 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:54:46,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 215 treesize of output 163 [2024-11-09 04:54:47,315 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:54:47,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 231 treesize of output 95 [2024-11-09 04:54:47,474 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2024-11-09 04:54:47,474 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:54:47,474 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:54:47,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854838585] [2024-11-09 04:54:47,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [854838585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:54:47,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:54:47,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-09 04:54:47,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273074702] [2024-11-09 04:54:47,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:54:47,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 04:54:47,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:54:47,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 04:54:47,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-09 04:54:47,476 INFO L87 Difference]: Start difference. First operand 1311 states and 1842 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 04:54:55,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:54:55,878 INFO L93 Difference]: Finished difference Result 3148 states and 4381 transitions. [2024-11-09 04:54:55,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 04:54:55,880 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 123 [2024-11-09 04:54:55,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:54:55,888 INFO L225 Difference]: With dead ends: 3148 [2024-11-09 04:54:55,888 INFO L226 Difference]: Without dead ends: 1840 [2024-11-09 04:54:55,890 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2024-11-09 04:54:55,891 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 662 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:54:55,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 661 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-11-09 04:54:55,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2024-11-09 04:54:56,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 1498. [2024-11-09 04:54:56,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1498 states, 1408 states have (on average 1.4197443181818181) internal successors, (1999), 1413 states have internal predecessors, (1999), 60 states have call successors, (60), 29 states have call predecessors, (60), 29 states have return successors, (60), 55 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-09 04:54:56,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1498 states to 1498 states and 2119 transitions. [2024-11-09 04:54:56,275 INFO L78 Accepts]: Start accepts. Automaton has 1498 states and 2119 transitions. Word has length 123 [2024-11-09 04:54:56,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:54:56,276 INFO L471 AbstractCegarLoop]: Abstraction has 1498 states and 2119 transitions. [2024-11-09 04:54:56,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 04:54:56,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1498 states and 2119 transitions. [2024-11-09 04:54:56,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 04:54:56,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:54:56,280 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:54:56,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:54:56,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:54:56,480 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:54:56,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:54:56,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1543679032, now seen corresponding path program 1 times [2024-11-09 04:54:56,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:54:56,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1528979259] [2024-11-09 04:54:56,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:54:56,482 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 [2024-11-09 04:54:56,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:54:56,483 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:54:56,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2024-11-09 04:54:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:54:57,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-09 04:54:57,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:54:57,022 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 [2024-11-09 04:54:57,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 04:54:57,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 04:54:57,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 04:54:57,035 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 [2024-11-09 04:54:57,098 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 25 treesize of output 24 [2024-11-09 04:54:57,329 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 56 treesize of output 55 [2024-11-09 04:54:57,432 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 132 treesize of output 102 [2024-11-09 04:54:57,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:54:57,442 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:54:57,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 102 treesize of output 152 [2024-11-09 04:54:57,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 68 treesize of output 59 [2024-11-09 04:54:58,467 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:54:58,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 232 treesize of output 156 [2024-11-09 04:54:58,863 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:54:58,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 216 treesize of output 155 [2024-11-09 04:55:00,009 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:00,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 232 treesize of output 96 [2024-11-09 04:55:00,181 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2024-11-09 04:55:00,181 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:55:00,181 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:55:00,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1528979259] [2024-11-09 04:55:00,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1528979259] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:55:00,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:55:00,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-09 04:55:00,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966220023] [2024-11-09 04:55:00,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:55:00,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 04:55:00,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:55:00,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 04:55:00,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-09 04:55:00,183 INFO L87 Difference]: Start difference. First operand 1498 states and 2119 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-09 04:55:11,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:55:11,139 INFO L93 Difference]: Finished difference Result 3497 states and 4901 transitions. [2024-11-09 04:55:11,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 04:55:11,140 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 123 [2024-11-09 04:55:11,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:55:11,147 INFO L225 Difference]: With dead ends: 3497 [2024-11-09 04:55:11,148 INFO L226 Difference]: Without dead ends: 2002 [2024-11-09 04:55:11,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-09 04:55:11,151 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 691 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 1926 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 2001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2024-11-09 04:55:11,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 1057 Invalid, 2001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1926 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2024-11-09 04:55:11,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2024-11-09 04:55:11,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1491. [2024-11-09 04:55:11,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1491 states, 1401 states have (on average 1.4182726623840114) internal successors, (1987), 1406 states have internal predecessors, (1987), 60 states have call successors, (60), 29 states have call predecessors, (60), 29 states have return successors, (60), 55 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-09 04:55:11,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 2107 transitions. [2024-11-09 04:55:11,662 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 2107 transitions. Word has length 123 [2024-11-09 04:55:11,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:55:11,663 INFO L471 AbstractCegarLoop]: Abstraction has 1491 states and 2107 transitions. [2024-11-09 04:55:11,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-09 04:55:11,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 2107 transitions. [2024-11-09 04:55:11,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 04:55:11,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:55:11,666 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:55:11,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2024-11-09 04:55:11,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:55:11,867 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:55:11,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:55:11,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1008109860, now seen corresponding path program 1 times [2024-11-09 04:55:11,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:55:11,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251610182] [2024-11-09 04:55:11,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:55:11,868 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 [2024-11-09 04:55:11,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:55:11,869 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:55:11,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2024-11-09 04:55:12,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:55:12,361 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-09 04:55:12,366 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:55:12,373 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 [2024-11-09 04:55:12,377 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 [2024-11-09 04:55:12,452 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 25 treesize of output 24 [2024-11-09 04:55:12,614 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:12,614 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 35 treesize of output 37 [2024-11-09 04:55:12,827 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:12,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 40 [2024-11-09 04:55:12,983 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:12,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 40 [2024-11-09 04:55:13,194 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 46 treesize of output 51 [2024-11-09 04:55:13,411 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 103 treesize of output 79 [2024-11-09 04:55:13,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:13,422 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:13,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 79 treesize of output 141 [2024-11-09 04:55:13,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 57 [2024-11-09 04:55:14,309 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:14,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 200 treesize of output 157 [2024-11-09 04:55:14,740 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:14,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 208 treesize of output 168 [2024-11-09 04:55:15,890 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:15,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 224 treesize of output 100 [2024-11-09 04:55:16,194 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-09 04:55:16,194 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:55:16,195 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:55:16,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251610182] [2024-11-09 04:55:16,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251610182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:55:16,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:55:16,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-09 04:55:16,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493701505] [2024-11-09 04:55:16,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:55:16,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 04:55:16,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:55:16,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 04:55:16,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2024-11-09 04:55:16,197 INFO L87 Difference]: Start difference. First operand 1491 states and 2107 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-09 04:55:28,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:55:28,881 INFO L93 Difference]: Finished difference Result 3913 states and 5470 transitions. [2024-11-09 04:55:28,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 04:55:28,883 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 123 [2024-11-09 04:55:28,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:55:28,891 INFO L225 Difference]: With dead ends: 3913 [2024-11-09 04:55:28,892 INFO L226 Difference]: Without dead ends: 2425 [2024-11-09 04:55:28,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2024-11-09 04:55:28,894 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 803 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:55:28,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 731 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1261 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2024-11-09 04:55:28,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2024-11-09 04:55:29,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 1633. [2024-11-09 04:55:29,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1633 states, 1543 states have (on average 1.4329228775113416) internal successors, (2211), 1548 states have internal predecessors, (2211), 60 states have call successors, (60), 29 states have call predecessors, (60), 29 states have return successors, (60), 55 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-09 04:55:29,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 2331 transitions. [2024-11-09 04:55:29,260 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 2331 transitions. Word has length 123 [2024-11-09 04:55:29,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:55:29,260 INFO L471 AbstractCegarLoop]: Abstraction has 1633 states and 2331 transitions. [2024-11-09 04:55:29,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-09 04:55:29,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 2331 transitions. [2024-11-09 04:55:29,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 04:55:29,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:55:29,262 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:55:29,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Ended with exit code 0 [2024-11-09 04:55:29,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:55:29,463 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:55:29,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:55:29,464 INFO L85 PathProgramCache]: Analyzing trace with hash -10103101, now seen corresponding path program 1 times [2024-11-09 04:55:29,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:55:29,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679111823] [2024-11-09 04:55:29,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:55:29,464 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 [2024-11-09 04:55:29,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:55:29,466 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:55:29,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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 [2024-11-09 04:55:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:55:29,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 04:55:29,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:55:29,925 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 [2024-11-09 04:55:29,937 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 [2024-11-09 04:55:29,996 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 [2024-11-09 04:55:30,074 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 35 treesize of output 37 [2024-11-09 04:55:30,171 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 85 treesize of output 65 [2024-11-09 04:55:30,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:30,178 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:30,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 107 [2024-11-09 04:55:30,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 49 [2024-11-09 04:55:30,599 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 152 treesize of output 120 [2024-11-09 04:55:30,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:30,608 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:30,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 120 treesize of output 152 [2024-11-09 04:55:30,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 110 [2024-11-09 04:55:31,150 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:31,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 258 treesize of output 167 [2024-11-09 04:55:32,059 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:32,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 276 treesize of output 128 [2024-11-09 04:55:32,367 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2024-11-09 04:55:32,367 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:55:32,367 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:55:32,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679111823] [2024-11-09 04:55:32,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679111823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:55:32,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:55:32,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-09 04:55:32,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878292901] [2024-11-09 04:55:32,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:55:32,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 04:55:32,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:55:32,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 04:55:32,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-09 04:55:32,369 INFO L87 Difference]: Start difference. First operand 1633 states and 2331 transitions. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 04:55:46,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:55:46,578 INFO L93 Difference]: Finished difference Result 4043 states and 5650 transitions. [2024-11-09 04:55:46,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 04:55:46,579 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 123 [2024-11-09 04:55:46,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:55:46,586 INFO L225 Difference]: With dead ends: 4043 [2024-11-09 04:55:46,586 INFO L226 Difference]: Without dead ends: 2413 [2024-11-09 04:55:46,589 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2024-11-09 04:55:46,590 INFO L432 NwaCegarLoop]: 204 mSDtfsCounter, 652 mSDsluCounter, 1184 mSDsCounter, 0 mSdLazyCounter, 2678 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 2743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2024-11-09 04:55:46,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 1388 Invalid, 2743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 2678 Invalid, 0 Unknown, 0 Unchecked, 12.4s Time] [2024-11-09 04:55:46,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2024-11-09 04:55:47,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 1747. [2024-11-09 04:55:47,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1747 states, 1640 states have (on average 1.4213414634146342) internal successors, (2331), 1648 states have internal predecessors, (2331), 72 states have call successors, (72), 34 states have call predecessors, (72), 34 states have return successors, (72), 64 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-09 04:55:47,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 2475 transitions. [2024-11-09 04:55:47,132 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 2475 transitions. Word has length 123 [2024-11-09 04:55:47,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:55:47,133 INFO L471 AbstractCegarLoop]: Abstraction has 1747 states and 2475 transitions. [2024-11-09 04:55:47,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 04:55:47,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 2475 transitions. [2024-11-09 04:55:47,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 04:55:47,135 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:55:47,135 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:55:47,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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)] Forceful destruction successful, exit code 0 [2024-11-09 04:55:47,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:55:47,336 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:55:47,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:55:47,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1825758310, now seen corresponding path program 1 times [2024-11-09 04:55:47,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:55:47,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [178594114] [2024-11-09 04:55:47,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:55:47,338 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 [2024-11-09 04:55:47,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:55:47,339 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:55:47,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2024-11-09 04:55:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:55:47,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 04:55:47,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:55:47,825 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 [2024-11-09 04:55:47,828 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 [2024-11-09 04:55:47,879 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 [2024-11-09 04:55:47,924 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 25 treesize of output 24 [2024-11-09 04:55:48,040 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:48,040 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 35 treesize of output 37 [2024-11-09 04:55:48,255 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:48,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 50 [2024-11-09 04:55:48,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 64 [2024-11-09 04:55:48,806 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 113 treesize of output 87 [2024-11-09 04:55:48,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:48,817 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:48,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 87 treesize of output 159 [2024-11-09 04:55:48,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 68 [2024-11-09 04:55:49,849 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:49,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 201 treesize of output 158 [2024-11-09 04:55:50,304 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:50,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 209 treesize of output 169 [2024-11-09 04:55:51,496 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:51,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 225 treesize of output 101 [2024-11-09 04:55:51,966 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 304 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-09 04:55:51,966 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:55:51,966 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:55:51,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [178594114] [2024-11-09 04:55:51,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [178594114] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:55:51,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:55:51,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-09 04:55:51,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189559643] [2024-11-09 04:55:51,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:55:51,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 04:55:51,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:55:51,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 04:55:51,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2024-11-09 04:55:51,969 INFO L87 Difference]: Start difference. First operand 1747 states and 2475 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-09 04:56:08,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:56:08,774 INFO L93 Difference]: Finished difference Result 4343 states and 6098 transitions. [2024-11-09 04:56:08,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 04:56:08,775 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 123 [2024-11-09 04:56:08,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:56:08,780 INFO L225 Difference]: With dead ends: 4343 [2024-11-09 04:56:08,780 INFO L226 Difference]: Without dead ends: 2599 [2024-11-09 04:56:08,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2024-11-09 04:56:08,782 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 738 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 1674 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 1769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:56:08,782 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 899 Invalid, 1769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1674 Invalid, 0 Unknown, 0 Unchecked, 15.3s Time] [2024-11-09 04:56:08,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2599 states. [2024-11-09 04:56:09,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2599 to 1743. [2024-11-09 04:56:09,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1743 states, 1636 states have (on average 1.4199266503667483) internal successors, (2323), 1644 states have internal predecessors, (2323), 72 states have call successors, (72), 34 states have call predecessors, (72), 34 states have return successors, (72), 64 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-09 04:56:09,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1743 states to 1743 states and 2467 transitions. [2024-11-09 04:56:09,352 INFO L78 Accepts]: Start accepts. Automaton has 1743 states and 2467 transitions. Word has length 123 [2024-11-09 04:56:09,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:56:09,352 INFO L471 AbstractCegarLoop]: Abstraction has 1743 states and 2467 transitions. [2024-11-09 04:56:09,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-09 04:56:09,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1743 states and 2467 transitions. [2024-11-09 04:56:09,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 04:56:09,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:56:09,354 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:56:09,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2024-11-09 04:56:09,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:56:09,555 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:56:09,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:56:09,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1620322762, now seen corresponding path program 1 times [2024-11-09 04:56:09,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:56:09,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1017023512] [2024-11-09 04:56:09,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:56:09,556 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 [2024-11-09 04:56:09,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:56:09,558 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:56:09,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2024-11-09 04:56:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:56:10,093 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-09 04:56:10,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:56:10,101 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 [2024-11-09 04:56:10,104 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 [2024-11-09 04:56:10,164 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 [2024-11-09 04:56:10,217 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 25 treesize of output 24 [2024-11-09 04:56:10,350 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:56:10,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 27 [2024-11-09 04:56:10,453 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:56:10,453 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 [2024-11-09 04:56:10,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2024-11-09 04:56:10,670 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 112 treesize of output 86 [2024-11-09 04:56:10,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:56:10,681 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:56:10,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 86 treesize of output 144 [2024-11-09 04:56:10,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 70 treesize of output 61 [2024-11-09 04:56:11,554 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:56:11,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 211 treesize of output 156 [2024-11-09 04:56:11,941 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:56:11,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 219 treesize of output 167 [2024-11-09 04:56:13,162 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:56:13,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 235 treesize of output 99 [2024-11-09 04:56:13,441 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2024-11-09 04:56:13,441 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:56:13,441 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:56:13,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1017023512] [2024-11-09 04:56:13,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1017023512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:56:13,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:56:13,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-09 04:56:13,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723886034] [2024-11-09 04:56:13,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:56:13,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 04:56:13,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:56:13,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 04:56:13,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-11-09 04:56:13,443 INFO L87 Difference]: Start difference. First operand 1743 states and 2467 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-09 04:56:21,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:56:21,019 INFO L93 Difference]: Finished difference Result 4345 states and 6090 transitions. [2024-11-09 04:56:21,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 04:56:21,021 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 123 [2024-11-09 04:56:21,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:56:21,026 INFO L225 Difference]: With dead ends: 4345 [2024-11-09 04:56:21,026 INFO L226 Difference]: Without dead ends: 2605 [2024-11-09 04:56:21,028 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-11-09 04:56:21,029 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 576 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:56:21,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 564 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-11-09 04:56:21,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2605 states. [2024-11-09 04:56:21,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2605 to 1626. [2024-11-09 04:56:21,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1541 states have (on average 1.4497079818299805) internal successors, (2234), 1543 states have internal predecessors, (2234), 56 states have call successors, (56), 28 states have call predecessors, (56), 28 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 04:56:21,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 2346 transitions. [2024-11-09 04:56:21,489 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 2346 transitions. Word has length 123 [2024-11-09 04:56:21,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:56:21,489 INFO L471 AbstractCegarLoop]: Abstraction has 1626 states and 2346 transitions. [2024-11-09 04:56:21,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-09 04:56:21,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 2346 transitions. [2024-11-09 04:56:21,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 04:56:21,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:56:21,491 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:56:21,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Ended with exit code 0 [2024-11-09 04:56:21,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:56:21,692 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:56:21,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:56:21,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1839177480, now seen corresponding path program 1 times [2024-11-09 04:56:21,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:56:21,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1774541414] [2024-11-09 04:56:21,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:56:21,693 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 [2024-11-09 04:56:21,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:56:21,697 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:56:21,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2024-11-09 04:56:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:56:22,227 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 04:56:22,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:56:22,234 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 [2024-11-09 04:56:22,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 04:56:22,241 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 [2024-11-09 04:56:22,294 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 25 treesize of output 24 [2024-11-09 04:56:22,398 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:56:22,398 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 35 treesize of output 37 [2024-11-09 04:56:22,575 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:56:22,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 40 [2024-11-09 04:56:22,799 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 46 treesize of output 51 [2024-11-09 04:56:22,889 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 122 treesize of output 94 [2024-11-09 04:56:22,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:56:22,899 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:56:22,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 94 treesize of output 148 [2024-11-09 04:56:23,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 60 treesize of output 51 [2024-11-09 04:56:23,815 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:56:23,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 198 treesize of output 152 [2024-11-09 04:56:24,201 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:56:24,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 206 treesize of output 163 [2024-11-09 04:56:25,301 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:56:25,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 222 treesize of output 104 [2024-11-09 04:56:25,672 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-09 04:56:25,672 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:56:25,672 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:56:25,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1774541414] [2024-11-09 04:56:25,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1774541414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:56:25,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:56:25,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-09 04:56:25,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364924209] [2024-11-09 04:56:25,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:56:25,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 04:56:25,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:56:25,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 04:56:25,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-09 04:56:25,674 INFO L87 Difference]: Start difference. First operand 1626 states and 2346 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-09 04:56:38,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:56:38,954 INFO L93 Difference]: Finished difference Result 3932 states and 5622 transitions. [2024-11-09 04:56:38,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 04:56:38,956 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 123 [2024-11-09 04:56:38,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:56:38,959 INFO L225 Difference]: With dead ends: 3932 [2024-11-09 04:56:38,959 INFO L226 Difference]: Without dead ends: 2309 [2024-11-09 04:56:38,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2024-11-09 04:56:38,961 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 571 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:56:38,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 825 Invalid, 1461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time] [2024-11-09 04:56:38,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2309 states. [2024-11-09 04:56:39,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2309 to 1619. [2024-11-09 04:56:39,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1619 states, 1534 states have (on average 1.4485006518904824) internal successors, (2222), 1536 states have internal predecessors, (2222), 56 states have call successors, (56), 28 states have call predecessors, (56), 28 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 04:56:39,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 2334 transitions. [2024-11-09 04:56:39,361 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 2334 transitions. Word has length 123 [2024-11-09 04:56:39,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:56:39,361 INFO L471 AbstractCegarLoop]: Abstraction has 1619 states and 2334 transitions. [2024-11-09 04:56:39,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-09 04:56:39,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 2334 transitions. [2024-11-09 04:56:39,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 04:56:39,363 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:56:39,364 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:56:39,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2024-11-09 04:56:39,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:56:39,564 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:56:39,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:56:39,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1957494990, now seen corresponding path program 1 times [2024-11-09 04:56:39,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:56:39,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251836538] [2024-11-09 04:56:39,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:56:39,566 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 [2024-11-09 04:56:39,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:56:39,567 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:56:39,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2024-11-09 04:56:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:56:39,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 04:56:39,949 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:56:40,077 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 97 treesize of output 43 [2024-11-09 04:56:40,134 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 96 proven. 4 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-09 04:56:40,135 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:56:40,337 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 61 treesize of output 25 [2024-11-09 04:56:40,347 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 3 proven. 36 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 04:56:40,347 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:56:40,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251836538] [2024-11-09 04:56:40,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251836538] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:56:40,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [289898723] [2024-11-09 04:56:40,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:56:40,348 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:56:40,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:56:40,349 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:56:40,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (43)] Waiting until timeout for monitored process [2024-11-09 04:56:41,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:56:41,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 04:56:41,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:56:41,510 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 97 treesize of output 43 [2024-11-09 04:56:41,525 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 96 proven. 4 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-09 04:56:41,525 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:56:41,645 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 61 treesize of output 25 [2024-11-09 04:56:41,655 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 3 proven. 36 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 04:56:41,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [289898723] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:56:41,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161483929] [2024-11-09 04:56:41,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:56:41,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:56:41,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:56:41,658 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:56:41,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-09 04:56:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:56:41,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 04:56:41,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:56:42,091 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 31 treesize of output 15 [2024-11-09 04:56:42,142 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 27 treesize of output 26 [2024-11-09 04:56:42,213 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 81 treesize of output 61 [2024-11-09 04:56:42,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:56:42,222 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:56:42,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 89 [2024-11-09 04:56:42,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 34 [2024-11-09 04:56:42,407 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:56:42,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 51 [2024-11-09 04:56:42,631 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:56:42,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 22 [2024-11-09 04:56:42,688 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 123 proven. 6 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-09 04:56:42,688 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:56:43,267 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 33 proven. 6 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 04:56:43,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161483929] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:56:43,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 04:56:43,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9, 8, 10, 8] total 22 [2024-11-09 04:56:43,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745063613] [2024-11-09 04:56:43,268 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 04:56:43,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-09 04:56:43,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:56:43,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-09 04:56:43,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-11-09 04:56:43,271 INFO L87 Difference]: Start difference. First operand 1619 states and 2334 transitions. Second operand has 22 states, 19 states have (on average 6.7894736842105265) internal successors, (129), 22 states have internal predecessors, (129), 7 states have call successors, (43), 4 states have call predecessors, (43), 6 states have return successors, (43), 4 states have call predecessors, (43), 7 states have call successors, (43) [2024-11-09 04:56:57,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:56:57,655 INFO L93 Difference]: Finished difference Result 4315 states and 5950 transitions. [2024-11-09 04:56:57,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-11-09 04:56:57,657 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 6.7894736842105265) internal successors, (129), 22 states have internal predecessors, (129), 7 states have call successors, (43), 4 states have call predecessors, (43), 6 states have return successors, (43), 4 states have call predecessors, (43), 7 states have call successors, (43) Word has length 123 [2024-11-09 04:56:57,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:56:57,664 INFO L225 Difference]: With dead ends: 4315 [2024-11-09 04:56:57,664 INFO L226 Difference]: Without dead ends: 2611 [2024-11-09 04:56:57,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 816 GetRequests, 717 SyntacticMatches, 5 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2747 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=1444, Invalid=7676, Unknown=0, NotChecked=0, Total=9120 [2024-11-09 04:56:57,672 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 1279 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 2532 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1280 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 2715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 2532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:56:57,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1280 Valid, 1011 Invalid, 2715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 2532 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-11-09 04:56:57,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2024-11-09 04:56:58,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 1615. [2024-11-09 04:56:58,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1530 states have (on average 1.4431372549019608) internal successors, (2208), 1532 states have internal predecessors, (2208), 56 states have call successors, (56), 28 states have call predecessors, (56), 28 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 04:56:58,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 2320 transitions. [2024-11-09 04:56:58,492 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 2320 transitions. Word has length 123 [2024-11-09 04:56:58,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:56:58,493 INFO L471 AbstractCegarLoop]: Abstraction has 1615 states and 2320 transitions. [2024-11-09 04:56:58,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 6.7894736842105265) internal successors, (129), 22 states have internal predecessors, (129), 7 states have call successors, (43), 4 states have call predecessors, (43), 6 states have return successors, (43), 4 states have call predecessors, (43), 7 states have call successors, (43) [2024-11-09 04:56:58,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 2320 transitions. [2024-11-09 04:56:58,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 04:56:58,497 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:56:58,497 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:56:58,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Ended with exit code 0 [2024-11-09 04:56:58,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (43)] Forceful destruction successful, exit code 0 [2024-11-09 04:56:58,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-11-09 04:56:59,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:56:59,099 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:56:59,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:56:59,100 INFO L85 PathProgramCache]: Analyzing trace with hash -940087039, now seen corresponding path program 1 times [2024-11-09 04:56:59,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:56:59,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815788216] [2024-11-09 04:56:59,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:56:59,101 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 [2024-11-09 04:56:59,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:56:59,105 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:56:59,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2024-11-09 04:56:59,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:56:59,863 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 04:56:59,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:56:59,927 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 [2024-11-09 04:57:00,417 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 80 treesize of output 34 [2024-11-09 04:57:00,683 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 80 treesize of output 34 [2024-11-09 04:57:00,908 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 75 treesize of output 44 [2024-11-09 04:57:01,226 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:01,226 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 90 treesize of output 47 [2024-11-09 04:57:01,471 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:01,472 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 90 treesize of output 47 [2024-11-09 04:57:01,734 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:01,734 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 85 treesize of output 57 [2024-11-09 04:57:02,221 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:02,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 96 treesize of output 71 [2024-11-09 04:57:02,419 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 132 treesize of output 102 [2024-11-09 04:57:02,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:57:02,428 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:02,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 102 treesize of output 138 [2024-11-09 04:57:02,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 65 [2024-11-09 04:57:03,117 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:03,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 227 treesize of output 151 [2024-11-09 04:57:03,778 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:03,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 306 treesize of output 120 [2024-11-09 04:57:03,892 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-09 04:57:03,892 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:57:03,892 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:57:03,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815788216] [2024-11-09 04:57:03,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [815788216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:57:03,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:57:03,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-09 04:57:03,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997347236] [2024-11-09 04:57:03,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:57:03,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 04:57:03,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:57:03,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 04:57:03,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-11-09 04:57:03,894 INFO L87 Difference]: Start difference. First operand 1615 states and 2320 transitions. Second operand has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 13 states have internal predecessors, (65), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-09 04:57:10,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:57:10,046 INFO L93 Difference]: Finished difference Result 3275 states and 4692 transitions. [2024-11-09 04:57:10,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 04:57:10,047 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 13 states have internal predecessors, (65), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 123 [2024-11-09 04:57:10,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:57:10,051 INFO L225 Difference]: With dead ends: 3275 [2024-11-09 04:57:10,051 INFO L226 Difference]: Without dead ends: 1663 [2024-11-09 04:57:10,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2024-11-09 04:57:10,054 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 716 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:57:10,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 628 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-09 04:57:10,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2024-11-09 04:57:10,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1613. [2024-11-09 04:57:10,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1613 states, 1528 states have (on average 1.442408376963351) internal successors, (2204), 1530 states have internal predecessors, (2204), 56 states have call successors, (56), 28 states have call predecessors, (56), 28 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 04:57:10,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 2316 transitions. [2024-11-09 04:57:10,638 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 2316 transitions. Word has length 123 [2024-11-09 04:57:10,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:57:10,638 INFO L471 AbstractCegarLoop]: Abstraction has 1613 states and 2316 transitions. [2024-11-09 04:57:10,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 13 states have internal predecessors, (65), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-09 04:57:10,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 2316 transitions. [2024-11-09 04:57:10,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 04:57:10,640 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:57:10,640 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:57:10,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2024-11-09 04:57:10,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:57:10,841 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:57:10,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:57:10,841 INFO L85 PathProgramCache]: Analyzing trace with hash -739067227, now seen corresponding path program 1 times [2024-11-09 04:57:10,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:57:10,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1281690803] [2024-11-09 04:57:10,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:57:10,842 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 [2024-11-09 04:57:10,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:57:10,843 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:57:10,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2024-11-09 04:57:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:57:11,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 04:57:11,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:57:11,438 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 [2024-11-09 04:57:11,498 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 [2024-11-09 04:57:11,694 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:11,694 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 37 treesize of output 39 [2024-11-09 04:57:11,773 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 91 treesize of output 69 [2024-11-09 04:57:11,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:57:11,784 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:11,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 107 [2024-11-09 04:57:11,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:57:11,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 30 [2024-11-09 04:57:11,978 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:11,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 66 [2024-11-09 04:57:12,095 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:12,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 72 treesize of output 77 [2024-11-09 04:57:12,256 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:12,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 78 treesize of output 32 [2024-11-09 04:57:12,301 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 123 proven. 6 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-09 04:57:12,301 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:57:12,618 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 33 proven. 6 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 04:57:12,618 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:57:12,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1281690803] [2024-11-09 04:57:12,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1281690803] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:57:12,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2038691989] [2024-11-09 04:57:12,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:57:12,618 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:57:12,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:57:12,619 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:57:12,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (47)] Waiting until timeout for monitored process [2024-11-09 04:57:14,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:57:14,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-09 04:57:14,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:57:14,391 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 [2024-11-09 04:57:14,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2024-11-09 04:57:15,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2024-11-09 04:57:15,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 40 [2024-11-09 04:57:15,841 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:15,842 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 1 case distinctions, treesize of input 69 treesize of output 51 [2024-11-09 04:57:16,335 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:16,335 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 3 case distinctions, treesize of input 77 treesize of output 62 [2024-11-09 04:57:16,866 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:16,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 88 treesize of output 65 [2024-11-09 04:57:17,370 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:17,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 86 treesize of output 74 [2024-11-09 04:57:17,602 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 132 treesize of output 96 [2024-11-09 04:57:17,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:57:17,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 134 [2024-11-09 04:57:17,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 73 treesize of output 62 [2024-11-09 04:57:18,404 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:18,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 216 treesize of output 154 [2024-11-09 04:57:18,923 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:18,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 224 treesize of output 165 [2024-11-09 04:57:19,843 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:19,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 285 treesize of output 141 [2024-11-09 04:57:20,016 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-09 04:57:20,017 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:57:20,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2038691989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:57:20,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 04:57:20,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [12, 8] total 31 [2024-11-09 04:57:20,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845977585] [2024-11-09 04:57:20,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:57:20,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 04:57:20,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:57:20,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 04:57:20,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=781, Unknown=0, NotChecked=0, Total=930 [2024-11-09 04:57:20,020 INFO L87 Difference]: Start difference. First operand 1613 states and 2316 transitions. Second operand has 16 states, 16 states have (on average 4.25) internal successors, (68), 15 states have internal predecessors, (68), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-09 04:57:27,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:57:27,998 INFO L93 Difference]: Finished difference Result 3381 states and 4822 transitions. [2024-11-09 04:57:27,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 04:57:27,999 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 15 states have internal predecessors, (68), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 123 [2024-11-09 04:57:27,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:57:28,004 INFO L225 Difference]: With dead ends: 3381 [2024-11-09 04:57:28,004 INFO L226 Difference]: Without dead ends: 1771 [2024-11-09 04:57:28,007 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 333 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=166, Invalid=890, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 04:57:28,007 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 1071 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 1518 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 1574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:57:28,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 864 Invalid, 1574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1518 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-11-09 04:57:28,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2024-11-09 04:57:28,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 1612. [2024-11-09 04:57:28,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1527 states have (on average 1.441388343156516) internal successors, (2201), 1529 states have internal predecessors, (2201), 56 states have call successors, (56), 28 states have call predecessors, (56), 28 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 04:57:28,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2313 transitions. [2024-11-09 04:57:28,678 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2313 transitions. Word has length 123 [2024-11-09 04:57:28,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:57:28,678 INFO L471 AbstractCegarLoop]: Abstraction has 1612 states and 2313 transitions. [2024-11-09 04:57:28,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.25) internal successors, (68), 15 states have internal predecessors, (68), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-09 04:57:28,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2313 transitions. [2024-11-09 04:57:28,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 04:57:28,681 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:57:28,681 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:57:28,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (47)] Ended with exit code 0 [2024-11-09 04:57:28,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2024-11-09 04:57:29,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:57:29,082 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:57:29,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:57:29,084 INFO L85 PathProgramCache]: Analyzing trace with hash -157908319, now seen corresponding path program 1 times [2024-11-09 04:57:29,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:57:29,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115274880] [2024-11-09 04:57:29,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:57:29,085 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 [2024-11-09 04:57:29,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:57:29,089 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:57:29,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2024-11-09 04:57:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:57:29,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 04:57:29,714 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:57:29,722 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 [2024-11-09 04:57:29,784 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 [2024-11-09 04:57:29,971 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:29,971 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 37 treesize of output 39 [2024-11-09 04:57:30,051 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 91 treesize of output 69 [2024-11-09 04:57:30,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:57:30,062 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:30,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 107 [2024-11-09 04:57:30,077 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-09 04:57:30,416 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:30,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 65 [2024-11-09 04:57:30,626 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:30,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 27 [2024-11-09 04:57:30,662 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 123 proven. 6 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-09 04:57:30,662 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:57:31,015 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 33 proven. 6 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 04:57:31,015 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:57:31,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115274880] [2024-11-09 04:57:31,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2115274880] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:57:31,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1382361242] [2024-11-09 04:57:31,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:57:31,015 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:57:31,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:57:31,017 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:57:31,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (49)] Waiting until timeout for monitored process [2024-11-09 04:57:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:57:32,286 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-09 04:57:32,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:57:32,436 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 [2024-11-09 04:57:32,457 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 [2024-11-09 04:57:32,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2024-11-09 04:57:32,714 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 96 treesize of output 72 [2024-11-09 04:57:32,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:57:32,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 102 [2024-11-09 04:57:32,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2024-11-09 04:57:33,276 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:33,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 54 [2024-11-09 04:57:33,425 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:33,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 50 treesize of output 26 [2024-11-09 04:57:33,431 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2024-11-09 04:57:33,431 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:57:33,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1382361242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:57:33,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 04:57:33,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12, 9] total 24 [2024-11-09 04:57:33,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897048687] [2024-11-09 04:57:33,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:57:33,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 04:57:33,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:57:33,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 04:57:33,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=432, Unknown=0, NotChecked=0, Total=552 [2024-11-09 04:57:33,434 INFO L87 Difference]: Start difference. First operand 1612 states and 2313 transitions. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 9 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 04:57:38,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:57:38,374 INFO L93 Difference]: Finished difference Result 3963 states and 5585 transitions. [2024-11-09 04:57:38,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 04:57:38,375 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 9 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 123 [2024-11-09 04:57:38,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:57:38,381 INFO L225 Difference]: With dead ends: 3963 [2024-11-09 04:57:38,381 INFO L226 Difference]: Without dead ends: 2354 [2024-11-09 04:57:38,384 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 341 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2024-11-09 04:57:38,384 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 678 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-09 04:57:38,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 623 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-09 04:57:38,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2354 states. [2024-11-09 04:57:39,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2354 to 1632. [2024-11-09 04:57:39,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1632 states, 1547 states have (on average 1.4408532643826761) internal successors, (2229), 1549 states have internal predecessors, (2229), 56 states have call successors, (56), 28 states have call predecessors, (56), 28 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 04:57:39,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 2341 transitions. [2024-11-09 04:57:39,058 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 2341 transitions. Word has length 123 [2024-11-09 04:57:39,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:57:39,059 INFO L471 AbstractCegarLoop]: Abstraction has 1632 states and 2341 transitions. [2024-11-09 04:57:39,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 9 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-09 04:57:39,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 2341 transitions. [2024-11-09 04:57:39,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 04:57:39,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:57:39,062 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:57:39,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (49)] Ended with exit code 0 [2024-11-09 04:57:39,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2024-11-09 04:57:39,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:57:39,463 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:57:39,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:57:39,463 INFO L85 PathProgramCache]: Analyzing trace with hash -744714333, now seen corresponding path program 1 times [2024-11-09 04:57:39,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:57:39,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141488802] [2024-11-09 04:57:39,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:57:39,464 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 [2024-11-09 04:57:39,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:57:39,465 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:57:39,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2024-11-09 04:57:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:57:39,981 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 04:57:39,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:57:40,058 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 [2024-11-09 04:57:40,348 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 80 treesize of output 34 [2024-11-09 04:57:40,527 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 75 treesize of output 44 [2024-11-09 04:57:40,847 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:40,848 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 85 treesize of output 57 [2024-11-09 04:57:41,239 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:41,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 70 [2024-11-09 04:57:41,719 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:41,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 105 treesize of output 83 [2024-11-09 04:57:42,302 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:42,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 115 treesize of output 96 [2024-11-09 04:57:43,178 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:43,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 126 treesize of output 110 [2024-11-09 04:57:43,460 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 180 treesize of output 140 [2024-11-09 04:57:43,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:57:43,473 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:43,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 140 treesize of output 198 [2024-11-09 04:57:43,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:57:43,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 29 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 90 [2024-11-09 04:57:44,871 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 327 treesize of output 259 [2024-11-09 04:57:44,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:57:44,891 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:44,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 28 case distinctions, treesize of input 259 treesize of output 275 [2024-11-09 04:57:45,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 287 treesize of output 264 [2024-11-09 04:57:47,623 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:47,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 679 treesize of output 277 [2024-11-09 04:57:47,785 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 332 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-09 04:57:47,785 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:57:47,785 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:57:47,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141488802] [2024-11-09 04:57:47,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141488802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:57:47,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:57:47,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-09 04:57:47,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964639916] [2024-11-09 04:57:47,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:57:47,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 04:57:47,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:57:47,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 04:57:47,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2024-11-09 04:57:47,788 INFO L87 Difference]: Start difference. First operand 1632 states and 2341 transitions. Second operand has 17 states, 17 states have (on average 4.352941176470588) internal successors, (74), 16 states have internal predecessors, (74), 7 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-09 04:57:57,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:57:57,802 INFO L93 Difference]: Finished difference Result 3347 states and 4778 transitions. [2024-11-09 04:57:57,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 04:57:57,803 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.352941176470588) internal successors, (74), 16 states have internal predecessors, (74), 7 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 123 [2024-11-09 04:57:57,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:57:57,808 INFO L225 Difference]: With dead ends: 3347 [2024-11-09 04:57:57,808 INFO L226 Difference]: Without dead ends: 1718 [2024-11-09 04:57:57,810 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2024-11-09 04:57:57,811 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 1143 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 1929 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 1977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2024-11-09 04:57:57,811 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1143 Valid, 1040 Invalid, 1977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1929 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2024-11-09 04:57:57,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1718 states. [2024-11-09 04:57:58,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1718 to 1620. [2024-11-09 04:57:58,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1620 states, 1535 states have (on average 1.439087947882736) internal successors, (2209), 1537 states have internal predecessors, (2209), 56 states have call successors, (56), 28 states have call predecessors, (56), 28 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 04:57:58,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 2321 transitions. [2024-11-09 04:57:58,545 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 2321 transitions. Word has length 123 [2024-11-09 04:57:58,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:57:58,546 INFO L471 AbstractCegarLoop]: Abstraction has 1620 states and 2321 transitions. [2024-11-09 04:57:58,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.352941176470588) internal successors, (74), 16 states have internal predecessors, (74), 7 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-09 04:57:58,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 2321 transitions. [2024-11-09 04:57:58,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-09 04:57:58,549 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:57:58,549 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:57:58,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Ended with exit code 0 [2024-11-09 04:57:58,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:57:58,751 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:57:58,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:57:58,751 INFO L85 PathProgramCache]: Analyzing trace with hash -782417842, now seen corresponding path program 1 times [2024-11-09 04:57:58,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:57:58,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [777977789] [2024-11-09 04:57:58,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:57:58,752 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 [2024-11-09 04:57:58,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:57:58,755 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:57:58,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2024-11-09 04:57:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:57:59,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 04:57:59,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:57:59,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 04:57:59,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 04:57:59,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 04:57:59,283 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 [2024-11-09 04:57:59,342 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 [2024-11-09 04:57:59,390 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 [2024-11-09 04:57:59,437 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 25 treesize of output 24 [2024-11-09 04:57:59,549 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:59,550 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 35 treesize of output 37 [2024-11-09 04:57:59,740 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:59,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 51 [2024-11-09 04:57:59,800 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 100 treesize of output 76 [2024-11-09 04:57:59,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:57:59,808 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:57:59,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 124 [2024-11-09 04:57:59,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:57:59,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 50 [2024-11-09 04:58:00,299 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:58:00,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 138 treesize of output 113 [2024-11-09 04:58:01,003 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:58:01,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 182 treesize of output 154 [2024-11-09 04:58:01,276 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:58:01,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 205 treesize of output 87 [2024-11-09 04:58:01,341 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-09 04:58:01,342 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:58:01,342 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:58:01,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [777977789] [2024-11-09 04:58:01,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [777977789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:58:01,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:58:01,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-09 04:58:01,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281660882] [2024-11-09 04:58:01,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:58:01,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 04:58:01,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:58:01,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 04:58:01,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=77, Unknown=0, NotChecked=0, Total=132 [2024-11-09 04:58:01,344 INFO L87 Difference]: Start difference. First operand 1620 states and 2321 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-09 04:58:10,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:58:10,391 INFO L93 Difference]: Finished difference Result 3875 states and 5426 transitions. [2024-11-09 04:58:10,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 04:58:10,392 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 123 [2024-11-09 04:58:10,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:58:10,395 INFO L225 Difference]: With dead ends: 3875 [2024-11-09 04:58:10,395 INFO L226 Difference]: Without dead ends: 2258 [2024-11-09 04:58:10,397 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=77, Invalid=105, Unknown=0, NotChecked=0, Total=182 [2024-11-09 04:58:10,398 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 938 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2024-11-09 04:58:10,398 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 721 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2024-11-09 04:58:10,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2024-11-09 04:58:10,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 1620. [2024-11-09 04:58:10,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1620 states, 1535 states have (on average 1.4364820846905537) internal successors, (2205), 1537 states have internal predecessors, (2205), 56 states have call successors, (56), 28 states have call predecessors, (56), 28 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 04:58:10,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 2317 transitions. [2024-11-09 04:58:10,912 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 2317 transitions. Word has length 123 [2024-11-09 04:58:10,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:58:10,912 INFO L471 AbstractCegarLoop]: Abstraction has 1620 states and 2317 transitions. [2024-11-09 04:58:10,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-09 04:58:10,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 2317 transitions. [2024-11-09 04:58:10,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-09 04:58:10,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:58:10,916 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:58:10,924 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Ended with exit code 0 [2024-11-09 04:58:11,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:58:11,117 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:58:11,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:58:11,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1947602909, now seen corresponding path program 1 times [2024-11-09 04:58:11,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:58:11,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [913769991] [2024-11-09 04:58:11,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:58:11,118 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 [2024-11-09 04:58:11,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:58:11,121 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:58:11,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2024-11-09 04:58:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:58:11,631 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 04:58:11,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:58:11,638 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 [2024-11-09 04:58:11,780 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 [2024-11-09 04:58:11,893 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:58:11,894 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 [2024-11-09 04:58:12,010 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:58:12,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 61 [2024-11-09 04:58:12,141 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:58:12,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 61 treesize of output 72 [2024-11-09 04:58:12,636 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:58:12,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 94 treesize of output 42 [2024-11-09 04:58:12,792 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2024-11-09 04:58:12,792 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:58:12,792 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:58:12,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [913769991] [2024-11-09 04:58:12,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [913769991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:58:12,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:58:12,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-09 04:58:12,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891824405] [2024-11-09 04:58:12,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:58:12,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 04:58:12,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:58:12,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 04:58:12,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-11-09 04:58:12,794 INFO L87 Difference]: Start difference. First operand 1620 states and 2317 transitions. Second operand has 17 states, 16 states have (on average 4.0) internal successors, (64), 17 states have internal predecessors, (64), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-09 04:58:23,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:58:23,621 INFO L93 Difference]: Finished difference Result 4067 states and 5586 transitions. [2024-11-09 04:58:23,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-09 04:58:23,621 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.0) internal successors, (64), 17 states have internal predecessors, (64), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 125 [2024-11-09 04:58:23,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:58:23,625 INFO L225 Difference]: With dead ends: 4067 [2024-11-09 04:58:23,625 INFO L226 Difference]: Without dead ends: 2450 [2024-11-09 04:58:23,626 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=241, Invalid=949, Unknown=0, NotChecked=0, Total=1190 [2024-11-09 04:58:23,627 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 587 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 2704 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 2780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2024-11-09 04:58:23,627 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 1089 Invalid, 2780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2704 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2024-11-09 04:58:23,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2450 states. [2024-11-09 04:58:24,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2450 to 1630. [2024-11-09 04:58:24,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1545 states have (on average 1.4349514563106796) internal successors, (2217), 1547 states have internal predecessors, (2217), 56 states have call successors, (56), 28 states have call predecessors, (56), 28 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 04:58:24,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2329 transitions. [2024-11-09 04:58:24,152 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2329 transitions. Word has length 125 [2024-11-09 04:58:24,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:58:24,152 INFO L471 AbstractCegarLoop]: Abstraction has 1630 states and 2329 transitions. [2024-11-09 04:58:24,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.0) internal successors, (64), 17 states have internal predecessors, (64), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-09 04:58:24,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2329 transitions. [2024-11-09 04:58:24,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-09 04:58:24,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:58:24,154 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:58:24,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2024-11-09 04:58:24,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:58:24,355 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:58:24,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:58:24,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1054824555, now seen corresponding path program 1 times [2024-11-09 04:58:24,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:58:24,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [823009401] [2024-11-09 04:58:24,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:58:24,356 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 [2024-11-09 04:58:24,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:58:24,357 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:58:24,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2024-11-09 04:58:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:58:24,877 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 04:58:24,882 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:58:24,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-09 04:58:24,890 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 [2024-11-09 04:58:24,944 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 25 treesize of output 24 [2024-11-09 04:58:25,046 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:58:25,046 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 35 treesize of output 37 [2024-11-09 04:58:25,199 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:58:25,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 40 [2024-11-09 04:58:25,326 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:58:25,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 50 [2024-11-09 04:58:25,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 72 [2024-11-09 04:58:25,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 93 [2024-11-09 04:58:25,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:58:25,968 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:58:25,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 93 treesize of output 161 [2024-11-09 04:58:26,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 79 [2024-11-09 04:58:26,702 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 232 treesize of output 184 [2024-11-09 04:58:26,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:58:26,713 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:58:26,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 184 treesize of output 226 [2024-11-09 04:58:27,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 208 treesize of output 190 [2024-11-09 04:58:27,751 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:58:27,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 418 treesize of output 258 [2024-11-09 04:58:29,611 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:58:29,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 434 treesize of output 190 [2024-11-09 04:58:29,834 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 304 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-09 04:58:29,834 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:58:29,834 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:58:29,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [823009401] [2024-11-09 04:58:29,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [823009401] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:58:29,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:58:29,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-09 04:58:29,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588497853] [2024-11-09 04:58:29,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:58:29,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 04:58:29,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:58:29,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 04:58:29,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2024-11-09 04:58:29,836 INFO L87 Difference]: Start difference. First operand 1630 states and 2329 transitions. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-09 04:58:45,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:58:45,005 INFO L93 Difference]: Finished difference Result 3631 states and 5104 transitions. [2024-11-09 04:58:45,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 04:58:45,006 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 125 [2024-11-09 04:58:45,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:58:45,009 INFO L225 Difference]: With dead ends: 3631 [2024-11-09 04:58:45,009 INFO L226 Difference]: Without dead ends: 2004 [2024-11-09 04:58:45,011 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2024-11-09 04:58:45,011 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 821 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 1680 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2024-11-09 04:58:45,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 878 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1680 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2024-11-09 04:58:45,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2024-11-09 04:58:45,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 1554. [2024-11-09 04:58:45,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1554 states, 1469 states have (on average 1.424778761061947) internal successors, (2093), 1471 states have internal predecessors, (2093), 56 states have call successors, (56), 28 states have call predecessors, (56), 28 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 04:58:45,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2205 transitions. [2024-11-09 04:58:45,655 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2205 transitions. Word has length 125 [2024-11-09 04:58:45,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:58:45,655 INFO L471 AbstractCegarLoop]: Abstraction has 1554 states and 2205 transitions. [2024-11-09 04:58:45,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-09 04:58:45,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2205 transitions. [2024-11-09 04:58:45,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-09 04:58:45,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:58:45,658 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:58:45,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Ended with exit code 0 [2024-11-09 04:58:45,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:58:45,858 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:58:45,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:58:45,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1568077253, now seen corresponding path program 1 times [2024-11-09 04:58:45,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:58:45,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874420597] [2024-11-09 04:58:45,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:58:45,859 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 [2024-11-09 04:58:45,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:58:45,863 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:58:45,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2024-11-09 04:58:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:58:46,394 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 04:58:46,398 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:58:46,401 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 [2024-11-09 04:58:46,403 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 [2024-11-09 04:58:46,459 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 [2024-11-09 04:58:46,508 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 25 treesize of output 24 [2024-11-09 04:58:46,617 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:58:46,618 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 35 treesize of output 37 [2024-11-09 04:58:46,782 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:58:46,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 50 [2024-11-09 04:58:47,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 72 [2024-11-09 04:58:47,276 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 135 treesize of output 105 [2024-11-09 04:58:47,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:58:47,292 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:58:47,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 105 treesize of output 169 [2024-11-09 04:58:47,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 68 [2024-11-09 04:58:48,706 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 249 treesize of output 199 [2024-11-09 04:58:48,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:58:48,719 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:58:48,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 199 treesize of output 237 [2024-11-09 04:58:48,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 268 treesize of output 164 [2024-11-09 04:58:49,995 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:58:49,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 452 treesize of output 280 [2024-11-09 04:58:52,359 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:58:52,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 468 treesize of output 212 [2024-11-09 04:58:52,740 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 304 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-09 04:58:52,740 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:58:52,741 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:58:52,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [874420597] [2024-11-09 04:58:52,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [874420597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:58:52,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:58:52,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-09 04:58:52,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327068904] [2024-11-09 04:58:52,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:58:52,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 04:58:52,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:58:52,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 04:58:52,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2024-11-09 04:58:52,742 INFO L87 Difference]: Start difference. First operand 1554 states and 2205 transitions. Second operand has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-09 04:59:07,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:59:07,446 INFO L93 Difference]: Finished difference Result 3918 states and 5485 transitions. [2024-11-09 04:59:07,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 04:59:07,448 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 125 [2024-11-09 04:59:07,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:59:07,452 INFO L225 Difference]: With dead ends: 3918 [2024-11-09 04:59:07,452 INFO L226 Difference]: Without dead ends: 2367 [2024-11-09 04:59:07,454 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2024-11-09 04:59:07,455 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 1247 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 1700 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1247 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 1805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:59:07,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1247 Valid, 910 Invalid, 1805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1700 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2024-11-09 04:59:07,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2024-11-09 04:59:08,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 1619. [2024-11-09 04:59:08,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1619 states, 1534 states have (on average 1.4322033898305084) internal successors, (2197), 1536 states have internal predecessors, (2197), 56 states have call successors, (56), 28 states have call predecessors, (56), 28 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 04:59:08,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 2309 transitions. [2024-11-09 04:59:08,071 INFO L78 Accepts]: Start accepts. Automaton has 1619 states and 2309 transitions. Word has length 125 [2024-11-09 04:59:08,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:59:08,072 INFO L471 AbstractCegarLoop]: Abstraction has 1619 states and 2309 transitions. [2024-11-09 04:59:08,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-09 04:59:08,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1619 states and 2309 transitions. [2024-11-09 04:59:08,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-09 04:59:08,074 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:59:08,074 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:59:08,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Ended with exit code 0 [2024-11-09 04:59:08,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:59:08,275 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:59:08,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:59:08,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1434063747, now seen corresponding path program 1 times [2024-11-09 04:59:08,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:59:08,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407370437] [2024-11-09 04:59:08,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:59:08,277 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 [2024-11-09 04:59:08,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:59:08,278 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:59:08,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2024-11-09 04:59:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:59:08,927 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-09 04:59:08,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:59:08,938 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 [2024-11-09 04:59:09,018 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 25 treesize of output 24 [2024-11-09 04:59:09,153 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:59:09,154 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 [2024-11-09 04:59:09,247 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:59:09,247 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 [2024-11-09 04:59:09,339 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:59:09,339 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 [2024-11-09 04:59:09,440 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:59:09,441 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 [2024-11-09 04:59:09,645 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 56 treesize of output 55 [2024-11-09 04:59:09,744 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 132 treesize of output 102 [2024-11-09 04:59:09,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:59:09,758 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:59:09,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 102 treesize of output 152 [2024-11-09 04:59:09,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 76 [2024-11-09 04:59:11,162 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 258 treesize of output 206 [2024-11-09 04:59:11,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:59:11,174 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:59:11,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 206 treesize of output 226 [2024-11-09 04:59:11,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 220 treesize of output 183 [2024-11-09 04:59:12,796 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:59:12,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 470 treesize of output 277 [2024-11-09 04:59:15,219 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:59:15,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 486 treesize of output 218 [2024-11-09 04:59:15,664 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2024-11-09 04:59:15,665 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:59:15,665 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:59:15,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407370437] [2024-11-09 04:59:15,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [407370437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:59:15,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:59:15,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-09 04:59:15,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273858884] [2024-11-09 04:59:15,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:59:15,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 04:59:15,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:59:15,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 04:59:15,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-09 04:59:15,667 INFO L87 Difference]: Start difference. First operand 1619 states and 2309 transitions. Second operand has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-09 04:59:25,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:59:25,643 INFO L93 Difference]: Finished difference Result 3589 states and 5042 transitions. [2024-11-09 04:59:25,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 04:59:25,645 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 125 [2024-11-09 04:59:25,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:59:25,648 INFO L225 Difference]: With dead ends: 3589 [2024-11-09 04:59:25,648 INFO L226 Difference]: Without dead ends: 1973 [2024-11-09 04:59:25,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2024-11-09 04:59:25,650 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 936 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 1718 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 1786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:59:25,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 911 Invalid, 1786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1718 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2024-11-09 04:59:25,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1973 states. [2024-11-09 04:59:26,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1973 to 1449. [2024-11-09 04:59:26,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1364 states have (on average 1.4200879765395895) internal successors, (1937), 1366 states have internal predecessors, (1937), 56 states have call successors, (56), 28 states have call predecessors, (56), 28 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 04:59:26,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 2049 transitions. [2024-11-09 04:59:26,312 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 2049 transitions. Word has length 125 [2024-11-09 04:59:26,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:59:26,312 INFO L471 AbstractCegarLoop]: Abstraction has 1449 states and 2049 transitions. [2024-11-09 04:59:26,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-09 04:59:26,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 2049 transitions. [2024-11-09 04:59:26,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-09 04:59:26,315 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:59:26,315 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:59:26,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2024-11-09 04:59:26,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:59:26,516 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:59:26,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:59:26,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1595773909, now seen corresponding path program 1 times [2024-11-09 04:59:26,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:59:26,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796644088] [2024-11-09 04:59:26,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:59:26,517 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 [2024-11-09 04:59:26,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:59:26,518 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:59:26,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2024-11-09 04:59:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:59:27,023 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 04:59:27,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:59:27,029 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 [2024-11-09 04:59:27,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 04:59:27,034 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 [2024-11-09 04:59:27,083 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 [2024-11-09 04:59:27,124 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 [2024-11-09 04:59:27,165 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 25 treesize of output 24 [2024-11-09 04:59:27,291 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 36 treesize of output 38 [2024-11-09 04:59:27,416 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 93 treesize of output 71 [2024-11-09 04:59:27,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:59:27,424 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:59:27,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 71 treesize of output 123 [2024-11-09 04:59:27,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 51 [2024-11-09 04:59:27,866 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 168 treesize of output 132 [2024-11-09 04:59:27,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:59:27,876 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:59:27,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 132 treesize of output 170 [2024-11-09 04:59:28,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 136 treesize of output 111 [2024-11-09 04:59:28,582 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:59:28,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 290 treesize of output 184 [2024-11-09 04:59:29,888 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:59:29,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 306 treesize of output 134 [2024-11-09 04:59:30,358 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-09 04:59:30,358 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:59:30,358 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:59:30,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796644088] [2024-11-09 04:59:30,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796644088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:59:30,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:59:30,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 04:59:30,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187831834] [2024-11-09 04:59:30,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:59:30,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 04:59:30,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:59:30,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 04:59:30,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-09 04:59:30,360 INFO L87 Difference]: Start difference. First operand 1449 states and 2049 transitions. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-09 04:59:47,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:59:47,462 INFO L93 Difference]: Finished difference Result 3327 states and 4646 transitions. [2024-11-09 04:59:47,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 04:59:47,463 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 125 [2024-11-09 04:59:47,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:59:47,466 INFO L225 Difference]: With dead ends: 3327 [2024-11-09 04:59:47,466 INFO L226 Difference]: Without dead ends: 1881 [2024-11-09 04:59:47,467 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2024-11-09 04:59:47,467 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 584 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:59:47,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 613 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1205 Invalid, 0 Unknown, 0 Unchecked, 15.2s Time] [2024-11-09 04:59:47,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2024-11-09 04:59:48,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1353. [2024-11-09 04:59:48,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1353 states, 1268 states have (on average 1.410883280757098) internal successors, (1789), 1270 states have internal predecessors, (1789), 56 states have call successors, (56), 28 states have call predecessors, (56), 28 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 04:59:48,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 1901 transitions. [2024-11-09 04:59:48,071 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 1901 transitions. Word has length 125 [2024-11-09 04:59:48,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:59:48,071 INFO L471 AbstractCegarLoop]: Abstraction has 1353 states and 1901 transitions. [2024-11-09 04:59:48,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-09 04:59:48,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 1901 transitions. [2024-11-09 04:59:48,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-09 04:59:48,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:59:48,073 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:59:48,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Ended with exit code 0 [2024-11-09 04:59:48,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:59:48,274 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:59:48,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:59:48,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1192991109, now seen corresponding path program 1 times [2024-11-09 04:59:48,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:59:48,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116039245] [2024-11-09 04:59:48,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:59:48,275 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 [2024-11-09 04:59:48,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:59:48,279 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 04:59:48,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2024-11-09 04:59:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:59:48,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 04:59:48,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:59:48,914 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 [2024-11-09 04:59:48,991 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 [2024-11-09 04:59:49,067 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 [2024-11-09 04:59:49,144 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 25 treesize of output 24 [2024-11-09 04:59:49,319 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:59:49,319 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 35 treesize of output 37 [2024-11-09 04:59:49,563 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:59:49,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 50 [2024-11-09 04:59:49,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 64 [2024-11-09 04:59:50,024 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 132 treesize of output 102 [2024-11-09 04:59:50,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:59:50,037 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:59:50,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 102 treesize of output 152 [2024-11-09 04:59:50,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 79 treesize of output 66 [2024-11-09 04:59:51,457 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 239 treesize of output 191 [2024-11-09 04:59:51,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:59:51,473 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:59:51,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 191 treesize of output 219 [2024-11-09 04:59:51,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 249 treesize of output 161 [2024-11-09 04:59:52,928 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:59:52,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 432 treesize of output 263 [2024-11-09 04:59:55,839 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:59:55,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 448 treesize of output 204 [2024-11-09 04:59:56,804 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-09 04:59:56,805 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:59:56,805 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:59:56,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116039245] [2024-11-09 04:59:56,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1116039245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:59:56,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:59:56,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-09 04:59:56,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147805507] [2024-11-09 04:59:56,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:59:56,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 04:59:56,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:59:56,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 04:59:56,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2024-11-09 04:59:56,807 INFO L87 Difference]: Start difference. First operand 1353 states and 1901 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-09 05:00:20,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:00:20,804 INFO L93 Difference]: Finished difference Result 3790 states and 5290 transitions. [2024-11-09 05:00:20,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 05:00:20,806 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 125 [2024-11-09 05:00:20,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:00:20,810 INFO L225 Difference]: With dead ends: 3790 [2024-11-09 05:00:20,810 INFO L226 Difference]: Without dead ends: 2440 [2024-11-09 05:00:20,811 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2024-11-09 05:00:20,812 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 1070 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 1302 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:00:20,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1070 Valid, 706 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1302 Invalid, 0 Unknown, 0 Unchecked, 21.0s Time] [2024-11-09 05:00:20,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2024-11-09 05:00:21,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 1415. [2024-11-09 05:00:21,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1330 states have (on average 1.4195488721804512) internal successors, (1888), 1332 states have internal predecessors, (1888), 56 states have call successors, (56), 28 states have call predecessors, (56), 28 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 05:00:21,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 2000 transitions. [2024-11-09 05:00:21,504 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 2000 transitions. Word has length 125 [2024-11-09 05:00:21,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:00:21,505 INFO L471 AbstractCegarLoop]: Abstraction has 1415 states and 2000 transitions. [2024-11-09 05:00:21,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-09 05:00:21,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 2000 transitions. [2024-11-09 05:00:21,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-09 05:00:21,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:00:21,507 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:00:21,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2024-11-09 05:00:21,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:00:21,708 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:00:21,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:00:21,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1058977603, now seen corresponding path program 1 times [2024-11-09 05:00:21,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:00:21,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1571113146] [2024-11-09 05:00:21,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:00:21,709 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 [2024-11-09 05:00:21,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:00:21,710 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:00:21,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2024-11-09 05:00:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:00:22,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 05:00:22,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:00:22,366 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 [2024-11-09 05:00:22,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 05:00:22,372 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 [2024-11-09 05:00:22,434 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 [2024-11-09 05:00:22,484 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 25 treesize of output 24 [2024-11-09 05:00:22,613 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:00:22,614 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 35 treesize of output 37 [2024-11-09 05:00:22,870 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 46 treesize of output 51 [2024-11-09 05:00:22,962 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 122 treesize of output 94 [2024-11-09 05:00:22,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:00:22,972 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:00:22,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 94 treesize of output 148 [2024-11-09 05:00:23,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 72 [2024-11-09 05:00:24,413 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 221 treesize of output 177 [2024-11-09 05:00:24,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:00:24,426 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:00:24,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 177 treesize of output 213 [2024-11-09 05:00:24,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 164 [2024-11-09 05:00:25,779 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:00:25,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 396 treesize of output 251 [2024-11-09 05:00:28,085 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:00:28,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 412 treesize of output 192 [2024-11-09 05:00:29,417 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-09 05:00:29,417 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:00:29,418 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:00:29,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1571113146] [2024-11-09 05:00:29,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1571113146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:00:29,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:00:29,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-09 05:00:29,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151629005] [2024-11-09 05:00:29,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:00:29,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 05:00:29,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:00:29,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 05:00:29,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2024-11-09 05:00:29,420 INFO L87 Difference]: Start difference. First operand 1415 states and 2000 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-09 05:01:04,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:01:04,512 INFO L93 Difference]: Finished difference Result 3397 states and 4754 transitions. [2024-11-09 05:01:04,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 05:01:04,514 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 125 [2024-11-09 05:01:04,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:01:04,517 INFO L225 Difference]: With dead ends: 3397 [2024-11-09 05:01:04,517 INFO L226 Difference]: Without dead ends: 1985 [2024-11-09 05:01:04,519 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2024-11-09 05:01:04,519 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 765 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 1637 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 1712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:01:04,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 851 Invalid, 1712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1637 Invalid, 0 Unknown, 0 Unchecked, 32.2s Time] [2024-11-09 05:01:04,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2024-11-09 05:01:05,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1281. [2024-11-09 05:01:05,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1281 states, 1196 states have (on average 1.4096989966555185) internal successors, (1686), 1198 states have internal predecessors, (1686), 56 states have call successors, (56), 28 states have call predecessors, (56), 28 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 05:01:05,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1798 transitions. [2024-11-09 05:01:05,134 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1798 transitions. Word has length 125 [2024-11-09 05:01:05,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:01:05,134 INFO L471 AbstractCegarLoop]: Abstraction has 1281 states and 1798 transitions. [2024-11-09 05:01:05,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-09 05:01:05,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1798 transitions. [2024-11-09 05:01:05,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-09 05:01:05,136 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:01:05,136 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:01:05,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2024-11-09 05:01:05,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:01:05,337 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:01:05,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:01:05,337 INFO L85 PathProgramCache]: Analyzing trace with hash 945590270, now seen corresponding path program 1 times [2024-11-09 05:01:05,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:01:05,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [256626198] [2024-11-09 05:01:05,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:01:05,338 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 [2024-11-09 05:01:05,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:01:05,339 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:01:05,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2024-11-09 05:01:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:01:05,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 05:01:05,954 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:01:05,958 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 [2024-11-09 05:01:06,017 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 [2024-11-09 05:01:06,075 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 27 treesize of output 26 [2024-11-09 05:01:06,139 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 63 treesize of output 47 [2024-11-09 05:01:06,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:01:06,152 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:06,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 83 [2024-11-09 05:01:06,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 19 [2024-11-09 05:01:06,403 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:06,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 70 [2024-11-09 05:01:06,571 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:06,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 97 treesize of output 81 [2024-11-09 05:01:06,809 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:06,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 103 treesize of output 45 [2024-11-09 05:01:06,864 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 123 proven. 6 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-09 05:01:06,864 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:01:07,294 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 33 proven. 6 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 05:01:07,294 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:01:07,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [256626198] [2024-11-09 05:01:07,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [256626198] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:01:07,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [755446994] [2024-11-09 05:01:07,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:01:07,295 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:01:07,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:01:07,296 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:01:07,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (60)] Waiting until timeout for monitored process [2024-11-09 05:01:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:01:09,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-09 05:01:09,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:01:09,385 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 [2024-11-09 05:01:10,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 40 [2024-11-09 05:01:10,521 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:10,521 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 1 case distinctions, treesize of input 69 treesize of output 51 [2024-11-09 05:01:11,095 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:11,096 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 3 case distinctions, treesize of input 77 treesize of output 62 [2024-11-09 05:01:11,721 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:11,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 88 treesize of output 65 [2024-11-09 05:01:12,212 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:12,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 85 treesize of output 73 [2024-11-09 05:01:13,034 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:13,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 96 treesize of output 76 [2024-11-09 05:01:13,718 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:13,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 94 treesize of output 85 [2024-11-09 05:01:14,101 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 126 treesize of output 92 [2024-11-09 05:01:14,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:01:14,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 22 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 142 [2024-11-09 05:01:14,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 76 [2024-11-09 05:01:15,130 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:15,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 215 treesize of output 160 [2024-11-09 05:01:15,794 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:15,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 223 treesize of output 171 [2024-11-09 05:01:16,926 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:16,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 284 treesize of output 140 [2024-11-09 05:01:17,144 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 05:01:17,144 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:01:17,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [755446994] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:01:17,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 05:01:17,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [11, 8] total 31 [2024-11-09 05:01:17,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502301387] [2024-11-09 05:01:17,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:01:17,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 05:01:17,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:01:17,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 05:01:17,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=779, Unknown=0, NotChecked=0, Total=930 [2024-11-09 05:01:17,146 INFO L87 Difference]: Start difference. First operand 1281 states and 1798 transitions. Second operand has 17 states, 17 states have (on average 4.294117647058823) internal successors, (73), 16 states have internal predecessors, (73), 6 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-09 05:01:27,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:01:27,575 INFO L93 Difference]: Finished difference Result 2845 states and 3991 transitions. [2024-11-09 05:01:27,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 05:01:27,576 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.294117647058823) internal successors, (73), 16 states have internal predecessors, (73), 6 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 125 [2024-11-09 05:01:27,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:01:27,579 INFO L225 Difference]: With dead ends: 2845 [2024-11-09 05:01:27,580 INFO L226 Difference]: Without dead ends: 1567 [2024-11-09 05:01:27,582 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 340 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=169, Invalid=887, Unknown=0, NotChecked=0, Total=1056 [2024-11-09 05:01:27,582 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 749 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 1666 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:01:27,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 881 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1666 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2024-11-09 05:01:27,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1567 states. [2024-11-09 05:01:28,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1567 to 1277. [2024-11-09 05:01:28,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 1192 states have (on average 1.407718120805369) internal successors, (1678), 1194 states have internal predecessors, (1678), 56 states have call successors, (56), 28 states have call predecessors, (56), 28 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 05:01:28,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1790 transitions. [2024-11-09 05:01:28,179 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1790 transitions. Word has length 125 [2024-11-09 05:01:28,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:01:28,180 INFO L471 AbstractCegarLoop]: Abstraction has 1277 states and 1790 transitions. [2024-11-09 05:01:28,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.294117647058823) internal successors, (73), 16 states have internal predecessors, (73), 6 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-09 05:01:28,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1790 transitions. [2024-11-09 05:01:28,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-09 05:01:28,182 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:01:28,182 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:01:28,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2024-11-09 05:01:28,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (60)] Forceful destruction successful, exit code 0 [2024-11-09 05:01:28,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 05:01:28,583 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:01:28,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:01:28,583 INFO L85 PathProgramCache]: Analyzing trace with hash -467395528, now seen corresponding path program 1 times [2024-11-09 05:01:28,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:01:28,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1303159466] [2024-11-09 05:01:28,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:01:28,584 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 [2024-11-09 05:01:28,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:01:28,585 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:01:28,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2024-11-09 05:01:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:01:29,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 05:01:29,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:01:29,094 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 [2024-11-09 05:01:29,123 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 [2024-11-09 05:01:29,138 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-09 05:01:29,138 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:01:29,139 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:01:29,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1303159466] [2024-11-09 05:01:29,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1303159466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:01:29,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:01:29,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:01:29,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417418134] [2024-11-09 05:01:29,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:01:29,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:01:29,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:01:29,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:01:29,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:01:29,142 INFO L87 Difference]: Start difference. First operand 1277 states and 1790 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 05:01:31,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:01:31,437 INFO L93 Difference]: Finished difference Result 3433 states and 4786 transitions. [2024-11-09 05:01:31,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:01:31,438 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 125 [2024-11-09 05:01:31,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:01:31,442 INFO L225 Difference]: With dead ends: 3433 [2024-11-09 05:01:31,442 INFO L226 Difference]: Without dead ends: 2159 [2024-11-09 05:01:31,448 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 05:01:31,449 INFO L432 NwaCegarLoop]: 252 mSDtfsCounter, 161 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:01:31,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 824 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 05:01:31,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2159 states. [2024-11-09 05:01:32,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2159 to 1263. [2024-11-09 05:01:32,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1263 states, 1178 states have (on average 1.4023769100169778) internal successors, (1652), 1180 states have internal predecessors, (1652), 56 states have call successors, (56), 28 states have call predecessors, (56), 28 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 05:01:32,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1764 transitions. [2024-11-09 05:01:32,100 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1764 transitions. Word has length 125 [2024-11-09 05:01:32,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:01:32,101 INFO L471 AbstractCegarLoop]: Abstraction has 1263 states and 1764 transitions. [2024-11-09 05:01:32,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-09 05:01:32,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1764 transitions. [2024-11-09 05:01:32,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-09 05:01:32,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:01:32,103 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:01:32,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2024-11-09 05:01:32,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:01:32,304 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:01:32,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:01:32,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1054201542, now seen corresponding path program 1 times [2024-11-09 05:01:32,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:01:32,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [728707350] [2024-11-09 05:01:32,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:01:32,305 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 [2024-11-09 05:01:32,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:01:32,306 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:01:32,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2024-11-09 05:01:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:01:32,977 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 05:01:32,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:01:33,022 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 [2024-11-09 05:01:33,353 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 75 treesize of output 44 [2024-11-09 05:01:33,679 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:33,680 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 85 treesize of output 57 [2024-11-09 05:01:34,094 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:34,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 70 [2024-11-09 05:01:34,612 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:34,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 110 treesize of output 73 [2024-11-09 05:01:35,026 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:35,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 105 treesize of output 83 [2024-11-09 05:01:35,644 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:35,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 120 treesize of output 86 [2024-11-09 05:01:36,262 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:36,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 116 treesize of output 97 [2024-11-09 05:01:36,548 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 152 treesize of output 118 [2024-11-09 05:01:36,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:01:36,560 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:36,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 118 treesize of output 174 [2024-11-09 05:01:36,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 75 [2024-11-09 05:01:37,626 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 286 treesize of output 226 [2024-11-09 05:01:37,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:01:37,640 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:37,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 226 treesize of output 244 [2024-11-09 05:01:37,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 295 treesize of output 179 [2024-11-09 05:01:39,742 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:39,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 597 treesize of output 243 [2024-11-09 05:01:39,894 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-09 05:01:39,894 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:01:39,894 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:01:39,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [728707350] [2024-11-09 05:01:39,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [728707350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:01:39,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:01:39,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-09 05:01:39,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810827765] [2024-11-09 05:01:39,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:01:39,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 05:01:39,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:01:39,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 05:01:39,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2024-11-09 05:01:39,896 INFO L87 Difference]: Start difference. First operand 1263 states and 1764 transitions. Second operand has 16 states, 16 states have (on average 4.5625) internal successors, (73), 15 states have internal predecessors, (73), 6 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-09 05:01:48,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:01:48,504 INFO L93 Difference]: Finished difference Result 2742 states and 3838 transitions. [2024-11-09 05:01:48,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 05:01:48,505 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.5625) internal successors, (73), 15 states have internal predecessors, (73), 6 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 125 [2024-11-09 05:01:48,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:01:48,507 INFO L225 Difference]: With dead ends: 2742 [2024-11-09 05:01:48,507 INFO L226 Difference]: Without dead ends: 1482 [2024-11-09 05:01:48,508 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2024-11-09 05:01:48,509 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 624 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 1618 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 1641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:01:48,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 879 Invalid, 1641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1618 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2024-11-09 05:01:48,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2024-11-09 05:01:49,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1259. [2024-11-09 05:01:49,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1259 states, 1174 states have (on average 1.4020442930153323) internal successors, (1646), 1176 states have internal predecessors, (1646), 56 states have call successors, (56), 28 states have call predecessors, (56), 28 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 05:01:49,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 1758 transitions. [2024-11-09 05:01:49,103 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 1758 transitions. Word has length 125 [2024-11-09 05:01:49,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:01:49,103 INFO L471 AbstractCegarLoop]: Abstraction has 1259 states and 1758 transitions. [2024-11-09 05:01:49,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.5625) internal successors, (73), 15 states have internal predecessors, (73), 6 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-09 05:01:49,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 1758 transitions. [2024-11-09 05:01:49,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-09 05:01:49,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:01:49,105 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:01:49,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2024-11-09 05:01:49,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:01:49,306 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:01:49,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:01:49,306 INFO L85 PathProgramCache]: Analyzing trace with hash -279800288, now seen corresponding path program 1 times [2024-11-09 05:01:49,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:01:49,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1612347084] [2024-11-09 05:01:49,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:01:49,307 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 [2024-11-09 05:01:49,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:01:49,308 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:01:49,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2024-11-09 05:01:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:01:49,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 05:01:49,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:01:49,873 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 [2024-11-09 05:01:49,926 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 [2024-11-09 05:01:49,980 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 27 treesize of output 26 [2024-11-09 05:01:50,026 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 81 treesize of output 61 [2024-11-09 05:01:50,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:01:50,033 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:50,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 89 [2024-11-09 05:01:50,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 34 [2024-11-09 05:01:50,266 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:50,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 51 [2024-11-09 05:01:50,376 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:50,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 62 [2024-11-09 05:01:50,524 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:50,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 60 treesize of output 26 [2024-11-09 05:01:50,553 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 123 proven. 6 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-09 05:01:50,553 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:01:50,926 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 33 proven. 6 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 05:01:50,926 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:01:50,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1612347084] [2024-11-09 05:01:50,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1612347084] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:01:50,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [774688074] [2024-11-09 05:01:50,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:01:50,927 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:01:50,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:01:50,928 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:01:50,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (64)] Waiting until timeout for monitored process [2024-11-09 05:01:52,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:01:52,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-09 05:01:52,479 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:01:52,898 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 [2024-11-09 05:01:53,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 32 [2024-11-09 05:01:53,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 40 [2024-11-09 05:01:54,181 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:54,181 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 1 case distinctions, treesize of input 69 treesize of output 51 [2024-11-09 05:01:54,701 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:54,702 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 3 case distinctions, treesize of input 80 treesize of output 54 [2024-11-09 05:01:55,066 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:55,066 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 3 case distinctions, treesize of input 80 treesize of output 54 [2024-11-09 05:01:55,428 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:55,429 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 3 case distinctions, treesize of input 80 treesize of output 54 [2024-11-09 05:01:55,889 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:55,889 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 3 case distinctions, treesize of input 78 treesize of output 63 [2024-11-09 05:01:56,143 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 124 treesize of output 90 [2024-11-09 05:01:56,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:01:56,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 130 [2024-11-09 05:01:56,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 37 treesize of output 38 [2024-11-09 05:01:57,078 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 219 treesize of output 163 [2024-11-09 05:01:57,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:01:57,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 22 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 191 [2024-11-09 05:01:57,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 195 treesize of output 165 [2024-11-09 05:01:58,335 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:58,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 396 treesize of output 257 [2024-11-09 05:01:59,718 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:01:59,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 457 treesize of output 233 [2024-11-09 05:01:59,915 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-09 05:01:59,915 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:01:59,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [774688074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:01:59,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 05:01:59,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [12, 9] total 30 [2024-11-09 05:01:59,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946108336] [2024-11-09 05:01:59,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:01:59,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 05:01:59,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:01:59,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 05:01:59,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=735, Unknown=0, NotChecked=0, Total=870 [2024-11-09 05:01:59,917 INFO L87 Difference]: Start difference. First operand 1259 states and 1758 transitions. Second operand has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 14 states have internal predecessors, (67), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-09 05:02:09,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:02:09,300 INFO L93 Difference]: Finished difference Result 2758 states and 3829 transitions. [2024-11-09 05:02:09,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 05:02:09,301 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 14 states have internal predecessors, (67), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 125 [2024-11-09 05:02:09,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:02:09,303 INFO L225 Difference]: With dead ends: 2758 [2024-11-09 05:02:09,303 INFO L226 Difference]: Without dead ends: 1502 [2024-11-09 05:02:09,305 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 339 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=151, Invalid=841, Unknown=0, NotChecked=0, Total=992 [2024-11-09 05:02:09,305 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 1197 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 1726 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:02:09,305 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1197 Valid, 953 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1726 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2024-11-09 05:02:09,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2024-11-09 05:02:09,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1252. [2024-11-09 05:02:09,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 1167 states have (on average 1.4010282776349614) internal successors, (1635), 1169 states have internal predecessors, (1635), 56 states have call successors, (56), 28 states have call predecessors, (56), 28 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 05:02:09,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1747 transitions. [2024-11-09 05:02:09,906 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1747 transitions. Word has length 125 [2024-11-09 05:02:09,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:02:09,907 INFO L471 AbstractCegarLoop]: Abstraction has 1252 states and 1747 transitions. [2024-11-09 05:02:09,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.466666666666667) internal successors, (67), 14 states have internal predecessors, (67), 4 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-09 05:02:09,907 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1747 transitions. [2024-11-09 05:02:09,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-09 05:02:09,909 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:02:09,909 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:02:09,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (64)] Forceful destruction successful, exit code 0 [2024-11-09 05:02:10,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2024-11-09 05:02:10,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:02:10,311 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:02:10,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:02:10,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1940813415, now seen corresponding path program 1 times [2024-11-09 05:02:10,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:02:10,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1558651612] [2024-11-09 05:02:10,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:10,312 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 [2024-11-09 05:02:10,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:02:10,315 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:02:10,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2024-11-09 05:02:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:02:10,897 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 05:02:10,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:02:10,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 05:02:10,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 05:02:10,910 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 [2024-11-09 05:02:10,969 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 [2024-11-09 05:02:11,018 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 25 treesize of output 24 [2024-11-09 05:02:11,149 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:02:11,150 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 [2024-11-09 05:02:11,251 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:02:11,252 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 35 treesize of output 37 [2024-11-09 05:02:11,427 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:02:11,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 50 [2024-11-09 05:02:11,703 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:02:11,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 64 [2024-11-09 05:02:11,835 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 92 treesize of output 70 [2024-11-09 05:02:11,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:02:11,844 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:02:11,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 70 treesize of output 136 [2024-11-09 05:02:11,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 53 [2024-11-09 05:02:12,308 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:02:12,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 147 treesize of output 119 [2024-11-09 05:02:13,255 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:02:13,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 191 treesize of output 151 [2024-11-09 05:02:13,568 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:02:13,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 214 treesize of output 84 [2024-11-09 05:02:13,643 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 304 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-09 05:02:13,643 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:02:13,643 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:02:13,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1558651612] [2024-11-09 05:02:13,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1558651612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:02:13,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:02:13,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-09 05:02:13,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018637004] [2024-11-09 05:02:13,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:02:13,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 05:02:13,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:02:13,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 05:02:13,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=90, Unknown=0, NotChecked=0, Total=156 [2024-11-09 05:02:13,645 INFO L87 Difference]: Start difference. First operand 1252 states and 1747 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-09 05:02:22,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:02:22,504 INFO L93 Difference]: Finished difference Result 3335 states and 4644 transitions. [2024-11-09 05:02:22,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 05:02:22,505 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 125 [2024-11-09 05:02:22,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:02:22,510 INFO L225 Difference]: With dead ends: 3335 [2024-11-09 05:02:22,510 INFO L226 Difference]: Without dead ends: 2086 [2024-11-09 05:02:22,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=90, Invalid=120, Unknown=0, NotChecked=0, Total=210 [2024-11-09 05:02:22,512 INFO L432 NwaCegarLoop]: 172 mSDtfsCounter, 876 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:02:22,512 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 609 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-11-09 05:02:22,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2086 states. [2024-11-09 05:02:23,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2086 to 1330. [2024-11-09 05:02:23,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1330 states, 1245 states have (on average 1.4096385542168675) internal successors, (1755), 1247 states have internal predecessors, (1755), 56 states have call successors, (56), 28 states have call predecessors, (56), 28 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 05:02:23,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1867 transitions. [2024-11-09 05:02:23,154 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1867 transitions. Word has length 125 [2024-11-09 05:02:23,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:02:23,154 INFO L471 AbstractCegarLoop]: Abstraction has 1330 states and 1867 transitions. [2024-11-09 05:02:23,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-09 05:02:23,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1867 transitions. [2024-11-09 05:02:23,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-09 05:02:23,156 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:02:23,157 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:02:23,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2024-11-09 05:02:23,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 05:02:23,357 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:02:23,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:02:23,358 INFO L85 PathProgramCache]: Analyzing trace with hash 2141833227, now seen corresponding path program 1 times [2024-11-09 05:02:23,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:02:23,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1024957865] [2024-11-09 05:02:23,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:23,359 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 [2024-11-09 05:02:23,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:02:23,360 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:02:23,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2024-11-09 05:02:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:02:23,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-09 05:02:23,945 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:02:23,948 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 [2024-11-09 05:02:23,998 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 [2024-11-09 05:02:24,150 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:02:24,150 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 37 treesize of output 39 [2024-11-09 05:02:24,215 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 91 treesize of output 69 [2024-11-09 05:02:24,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:02:24,223 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:02:24,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 107 [2024-11-09 05:02:24,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 57 treesize of output 39 [2024-11-09 05:02:24,397 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:02:24,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 64 [2024-11-09 05:02:24,523 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:02:24,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 64 treesize of output 75 [2024-11-09 05:02:24,696 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:02:24,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 70 treesize of output 30 [2024-11-09 05:02:24,727 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 123 proven. 6 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-09 05:02:24,727 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:02:25,064 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 33 proven. 6 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 05:02:25,064 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:02:25,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1024957865] [2024-11-09 05:02:25,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1024957865] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:02:25,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2126995577] [2024-11-09 05:02:25,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:25,065 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 05:02:25,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 05:02:25,066 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 05:02:25,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (67)] Waiting until timeout for monitored process [2024-11-09 05:02:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:02:26,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 05:02:26,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:02:26,712 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 [2024-11-09 05:02:26,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-09 05:02:26,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2024-11-09 05:02:27,052 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 69 treesize of output 49 [2024-11-09 05:02:27,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:02:27,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 73 [2024-11-09 05:02:27,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 17 [2024-11-09 05:02:27,222 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:02:27,223 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 3 case distinctions, treesize of input 38 treesize of output 43 [2024-11-09 05:02:27,342 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:02:27,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 54 [2024-11-09 05:02:27,489 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:02:27,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 50 treesize of output 26 [2024-11-09 05:02:27,494 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 123 proven. 6 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-09 05:02:27,495 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:02:27,705 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 33 proven. 6 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 05:02:27,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2126995577] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:02:27,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607999494] [2024-11-09 05:02:27,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:27,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:02:27,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:02:27,707 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:02:27,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-11-09 05:02:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:02:28,136 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 05:02:28,139 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:02:28,154 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 [2024-11-09 05:02:28,202 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 27 treesize of output 26 [2024-11-09 05:02:28,279 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 81 treesize of output 61 [2024-11-09 05:02:28,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:02:28,286 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:02:28,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 89 [2024-11-09 05:02:28,477 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:02:28,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 51 [2024-11-09 05:02:28,627 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:02:28,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 62 [2024-11-09 05:02:28,800 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:02:28,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 60 treesize of output 26 [2024-11-09 05:02:28,806 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 123 proven. 6 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-09 05:02:28,806 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:02:28,999 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 33 proven. 6 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2024-11-09 05:02:28,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607999494] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:02:29,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 05:02:29,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 11, 8, 11, 8] total 29 [2024-11-09 05:02:29,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565833306] [2024-11-09 05:02:29,000 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 05:02:29,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-09 05:02:29,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:02:29,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-09 05:02:29,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=626, Unknown=0, NotChecked=0, Total=812 [2024-11-09 05:02:29,002 INFO L87 Difference]: Start difference. First operand 1330 states and 1867 transitions. Second operand has 29 states, 26 states have (on average 5.730769230769231) internal successors, (149), 29 states have internal predecessors, (149), 8 states have call successors, (33), 5 states have call predecessors, (33), 8 states have return successors, (33), 5 states have call predecessors, (33), 8 states have call successors, (33) [2024-11-09 05:02:42,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:02:42,907 INFO L93 Difference]: Finished difference Result 4239 states and 5691 transitions. [2024-11-09 05:02:42,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-09 05:02:42,908 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 5.730769230769231) internal successors, (149), 29 states have internal predecessors, (149), 8 states have call successors, (33), 5 states have call predecessors, (33), 8 states have return successors, (33), 5 states have call predecessors, (33), 8 states have call successors, (33) Word has length 125 [2024-11-09 05:02:42,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:02:42,913 INFO L225 Difference]: With dead ends: 4239 [2024-11-09 05:02:42,913 INFO L226 Difference]: Without dead ends: 2912 [2024-11-09 05:02:42,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 791 GetRequests, 715 SyntacticMatches, 9 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1431 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1072, Invalid=3620, Unknown=0, NotChecked=0, Total=4692 [2024-11-09 05:02:42,915 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 2465 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 2115 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2466 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 2544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 2115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:02:42,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2466 Valid, 798 Invalid, 2544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 2115 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2024-11-09 05:02:42,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2024-11-09 05:02:43,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 1352. [2024-11-09 05:02:43,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1267 states have (on average 1.409629044988161) internal successors, (1786), 1269 states have internal predecessors, (1786), 56 states have call successors, (56), 28 states have call predecessors, (56), 28 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2024-11-09 05:02:43,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1898 transitions. [2024-11-09 05:02:43,805 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1898 transitions. Word has length 125 [2024-11-09 05:02:43,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:02:43,805 INFO L471 AbstractCegarLoop]: Abstraction has 1352 states and 1898 transitions. [2024-11-09 05:02:43,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 5.730769230769231) internal successors, (149), 29 states have internal predecessors, (149), 8 states have call successors, (33), 5 states have call predecessors, (33), 8 states have return successors, (33), 5 states have call predecessors, (33), 8 states have call successors, (33) [2024-11-09 05:02:43,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1898 transitions. [2024-11-09 05:02:43,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-09 05:02:43,808 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:02:43,808 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 05:02:43,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2024-11-09 05:02:44,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2024-11-09 05:02:44,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (67)] Forceful destruction successful, exit code 0 [2024-11-09 05:02:44,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 05:02:44,409 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:02:44,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:02:44,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1555027213, now seen corresponding path program 1 times [2024-11-09 05:02:44,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 05:02:44,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855333735] [2024-11-09 05:02:44,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:02:44,410 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 [2024-11-09 05:02:44,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 05:02:44,411 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -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) [2024-11-09 05:02:44,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24e9ecb9-aea4-41da-a7c0-277c79afe552/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2024-11-09 05:02:45,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:02:45,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 05:02:45,139 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:02:45,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 05:02:45,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-09 05:02:45,148 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 [2024-11-09 05:02:45,216 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 [2024-11-09 05:02:45,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2024-11-09 05:02:45,404 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:02:45,404 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 35 treesize of output 37 [2024-11-09 05:02:45,603 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:02:45,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 50 [2024-11-09 05:02:45,875 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:02:45,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 53 [2024-11-09 05:02:46,153 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:02:46,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 64 [2024-11-09 05:02:46,261 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 110 treesize of output 84 [2024-11-09 05:02:46,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 05:02:46,272 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:02:46,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 84 treesize of output 142 [2024-11-09 05:02:46,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 62 [2024-11-09 05:02:46,845 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:02:46,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 168 treesize of output 128 [2024-11-09 05:02:47,459 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:02:47,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 206 treesize of output 160 [2024-11-09 05:02:47,876 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 05:02:47,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 229 treesize of output 93 [2024-11-09 05:02:48,001 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 304 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-09 05:02:48,001 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:02:48,001 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 05:02:48,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [855333735] [2024-11-09 05:02:48,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [855333735] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:02:48,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:02:48,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-09 05:02:48,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147461418] [2024-11-09 05:02:48,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:02:48,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 05:02:48,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 05:02:48,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 05:02:48,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2024-11-09 05:02:48,003 INFO L87 Difference]: Start difference. First operand 1352 states and 1898 transitions. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 12 states have internal predecessors, (70), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14)