./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-simple-white-blue-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-simple-white-blue-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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_af4553ec-b488-4a41-8567-a994af80bbe6/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 b63900034700ff8018e29578512f73f88317ae4b603a38b2f2f558c77b57812d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 04:48:18,904 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 04:48:19,031 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 04:48:19,040 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 04:48:19,041 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 04:48:19,082 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 04:48:19,083 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 04:48:19,083 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 04:48:19,086 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 04:48:19,087 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 04:48:19,087 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 04:48:19,087 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 04:48:19,088 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 04:48:19,088 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 04:48:19,089 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 04:48:19,089 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 04:48:19,089 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 04:48:19,094 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 04:48:19,094 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 04:48:19,095 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 04:48:19,095 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 04:48:19,100 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 04:48:19,101 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 04:48:19,101 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 04:48:19,101 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 04:48:19,102 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 04:48:19,102 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 04:48:19,104 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 04:48:19,105 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 04:48:19,105 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 04:48:19,105 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 04:48:19,105 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 04:48:19,106 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 04:48:19,106 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 04:48:19,106 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 04:48:19,107 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 04:48:19,107 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 04:48:19,107 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 04:48:19,108 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:48:19,109 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 04:48:19,109 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 04:48:19,109 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 04:48:19,110 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 04:48:19,110 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 04:48:19,110 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 04:48:19,111 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 04:48:19,111 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 04:48:19,111 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_af4553ec-b488-4a41-8567-a994af80bbe6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b63900034700ff8018e29578512f73f88317ae4b603a38b2f2f558c77b57812d [2024-11-09 04:48:19,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 04:48:19,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 04:48:19,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 04:48:19,457 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 04:48:19,458 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 04:48:19,459 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/forester-heap/sll-simple-white-blue-1.i Unable to find full path for "g++" [2024-11-09 04:48:21,556 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 04:48:21,887 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 04:48:21,888 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/sv-benchmarks/c/forester-heap/sll-simple-white-blue-1.i [2024-11-09 04:48:21,903 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/data/d67775f9d/cac90df2f4fa469391d22a661d3b46cd/FLAG724cfb1bd [2024-11-09 04:48:21,923 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/data/d67775f9d/cac90df2f4fa469391d22a661d3b46cd [2024-11-09 04:48:21,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 04:48:21,926 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 04:48:21,928 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 04:48:21,928 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 04:48:21,937 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 04:48:21,938 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:48:21" (1/1) ... [2024-11-09 04:48:21,939 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4340729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:21, skipping insertion in model container [2024-11-09 04:48:21,939 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:48:21" (1/1) ... [2024-11-09 04:48:21,993 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 04:48:22,384 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_af4553ec-b488-4a41-8567-a994af80bbe6/sv-benchmarks/c/forester-heap/sll-simple-white-blue-1.i[22605,22618] [2024-11-09 04:48:22,395 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:48:22,408 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 04:48:22,474 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_af4553ec-b488-4a41-8567-a994af80bbe6/sv-benchmarks/c/forester-heap/sll-simple-white-blue-1.i[22605,22618] [2024-11-09 04:48:22,480 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:48:22,520 INFO L204 MainTranslator]: Completed translation [2024-11-09 04:48:22,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:22 WrapperNode [2024-11-09 04:48:22,521 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 04:48:22,522 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 04:48:22,523 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 04:48:22,523 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 04:48:22,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:22" (1/1) ... [2024-11-09 04:48:22,561 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:22" (1/1) ... [2024-11-09 04:48:22,612 INFO L138 Inliner]: procedures = 119, calls = 31, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 105 [2024-11-09 04:48:22,613 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 04:48:22,614 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 04:48:22,614 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 04:48:22,614 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 04:48:22,633 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:22" (1/1) ... [2024-11-09 04:48:22,637 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:22" (1/1) ... [2024-11-09 04:48:22,647 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:22" (1/1) ... [2024-11-09 04:48:22,647 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:22" (1/1) ... [2024-11-09 04:48:22,667 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:22" (1/1) ... [2024-11-09 04:48:22,675 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:22" (1/1) ... [2024-11-09 04:48:22,680 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:22" (1/1) ... [2024-11-09 04:48:22,681 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:22" (1/1) ... [2024-11-09 04:48:22,688 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 04:48:22,690 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 04:48:22,690 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 04:48:22,690 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 04:48:22,691 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:22" (1/1) ... [2024-11-09 04:48:22,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:48:22,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:48:22,747 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 04:48:22,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 04:48:22,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 04:48:22,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 04:48:22,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 04:48:22,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 04:48:22,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 04:48:22,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 04:48:22,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 04:48:22,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 04:48:22,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 04:48:22,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 04:48:22,972 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 04:48:22,975 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 04:48:23,266 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-09 04:48:23,267 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 04:48:23,314 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 04:48:23,315 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-09 04:48:23,316 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:48:23 BoogieIcfgContainer [2024-11-09 04:48:23,316 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 04:48:23,320 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 04:48:23,320 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 04:48:23,324 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 04:48:23,325 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:48:21" (1/3) ... [2024-11-09 04:48:23,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7587b14e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:48:23, skipping insertion in model container [2024-11-09 04:48:23,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:22" (2/3) ... [2024-11-09 04:48:23,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7587b14e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:48:23, skipping insertion in model container [2024-11-09 04:48:23,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:48:23" (3/3) ... [2024-11-09 04:48:23,331 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-simple-white-blue-1.i [2024-11-09 04:48:23,355 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 04:48:23,356 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 04:48:23,436 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 04:48:23,445 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;@7f6cb573, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 04:48:23,446 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 04:48:23,451 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:48:23,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-09 04:48:23,459 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:48:23,460 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:48:23,460 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:48:23,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:48:23,504 INFO L85 PathProgramCache]: Analyzing trace with hash -607807568, now seen corresponding path program 1 times [2024-11-09 04:48:23,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:48:23,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222991839] [2024-11-09 04:48:23,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:48:23,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:48:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:48:23,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:48:23,750 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:48:23,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222991839] [2024-11-09 04:48:23,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222991839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:48:23,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:48:23,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:48:23,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479312874] [2024-11-09 04:48:23,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:48:23,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 04:48:23,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:48:23,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 04:48:23,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 04:48:23,795 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 24 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:48:23,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:48:23,825 INFO L93 Difference]: Finished difference Result 46 states and 71 transitions. [2024-11-09 04:48:23,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 04:48:23,828 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-09 04:48:23,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:48:23,840 INFO L225 Difference]: With dead ends: 46 [2024-11-09 04:48:23,840 INFO L226 Difference]: Without dead ends: 19 [2024-11-09 04:48:23,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 04:48:23,850 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:48:23,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:48:23,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-09 04:48:23,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-09 04:48:23,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:48:23,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2024-11-09 04:48:23,890 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 11 [2024-11-09 04:48:23,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:48:23,890 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2024-11-09 04:48:23,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:48:23,891 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2024-11-09 04:48:23,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 04:48:23,892 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:48:23,892 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:48:23,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 04:48:23,893 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:48:23,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:48:23,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1316015846, now seen corresponding path program 1 times [2024-11-09 04:48:23,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:48:23,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578814407] [2024-11-09 04:48:23,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:48:23,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:48:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:48:24,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:48:24,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:48:24,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578814407] [2024-11-09 04:48:24,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578814407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:48:24,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:48:24,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 04:48:24,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463869278] [2024-11-09 04:48:24,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:48:24,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 04:48:24,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:48:24,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 04:48:24,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 04:48:24,705 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:48:24,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:48:24,963 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2024-11-09 04:48:24,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 04:48:24,964 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-09 04:48:24,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:48:24,966 INFO L225 Difference]: With dead ends: 53 [2024-11-09 04:48:24,966 INFO L226 Difference]: Without dead ends: 51 [2024-11-09 04:48:24,967 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-09 04:48:24,968 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 48 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:48:24,969 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 61 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:48:24,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-09 04:48:24,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 30. [2024-11-09 04:48:24,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:48:24,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2024-11-09 04:48:24,980 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 13 [2024-11-09 04:48:24,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:48:24,980 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2024-11-09 04:48:24,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:48:24,981 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2024-11-09 04:48:24,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 04:48:24,982 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:48:24,982 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:48:24,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 04:48:24,982 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:48:24,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:48:24,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1469049729, now seen corresponding path program 1 times [2024-11-09 04:48:24,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:48:24,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39543387] [2024-11-09 04:48:24,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:48:24,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:48:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:48:25,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:48:25,294 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:48:25,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39543387] [2024-11-09 04:48:25,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39543387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:48:25,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:48:25,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 04:48:25,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416928644] [2024-11-09 04:48:25,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:48:25,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 04:48:25,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:48:25,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 04:48:25,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:48:25,300 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:48:25,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:48:25,462 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2024-11-09 04:48:25,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:48:25,464 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-09 04:48:25,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:48:25,466 INFO L225 Difference]: With dead ends: 49 [2024-11-09 04:48:25,466 INFO L226 Difference]: Without dead ends: 40 [2024-11-09 04:48:25,467 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-09 04:48:25,468 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 41 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:48:25,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 57 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:48:25,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-09 04:48:25,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2024-11-09 04:48:25,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:48:25,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2024-11-09 04:48:25,483 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 15 [2024-11-09 04:48:25,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:48:25,483 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2024-11-09 04:48:25,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:48:25,484 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2024-11-09 04:48:25,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 04:48:25,485 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:48:25,486 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:48:25,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 04:48:25,486 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:48:25,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:48:25,487 INFO L85 PathProgramCache]: Analyzing trace with hash 574814571, now seen corresponding path program 1 times [2024-11-09 04:48:25,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:48:25,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184580350] [2024-11-09 04:48:25,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:48:25,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:48:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:48:26,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:48:26,357 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:48:26,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184580350] [2024-11-09 04:48:26,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184580350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:48:26,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901539646] [2024-11-09 04:48:26,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:48:26,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:48:26,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:48:26,361 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:48:26,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 04:48:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:48:26,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-09 04:48:26,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:48:26,608 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 11 treesize of output 7 [2024-11-09 04:48:26,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-09 04:48:26,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:48:26,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2024-11-09 04:48:26,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:48:26,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-09 04:48:26,776 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-09 04:48:26,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-09 04:48:26,866 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-11-09 04:48:26,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-11-09 04:48:26,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 04:48:26,885 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 11 treesize of output 7 [2024-11-09 04:48:26,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-09 04:48:27,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-09 04:48:27,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-09 04:48:27,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:48:27,089 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:48:27,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:48:27,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901539646] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:48:27,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [934552065] [2024-11-09 04:48:27,388 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2024-11-09 04:48:27,389 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:48:27,393 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:48:27,399 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:48:27,399 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:48:28,539 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:48:30,896 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '450#(and (exists ((|v_#memory_int_45| (Array Int (Array Int Int)))) (= |#memory_int| (store |v_#memory_int_45| |ULTIMATE.start_main_~head~0#1.base| (store (store (select |v_#memory_int_45| |ULTIMATE.start_main_~head~0#1.base|) 4 1) 0 (select (select |#memory_int| |ULTIMATE.start_main_~head~0#1.base|) 0))))) (<= 1 |#StackHeapBarrier|) (= (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ |ULTIMATE.start_main_~x~0#1.offset| 4)) 1) (not (= |ULTIMATE.start_main_~head~0#1.base| 0)) (exists ((|v_ULTIMATE.start_main_#t~nondet5#1_15| Int)) (and (<= |v_ULTIMATE.start_main_#t~nondet5#1_15| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_#t~nondet5#1_15| 2147483648)) (not (= |v_ULTIMATE.start_main_#t~nondet5#1_15| 0)))) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|) 0) |ULTIMATE.start_main_~x~0#1.offset|) (exists ((|v_#length_20| (Array Int Int))) (= (store |v_#length_20| |ULTIMATE.start_main_~head~0#1.base| 8) |#length|)) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|) 0) |ULTIMATE.start_main_~x~0#1.base|) (exists ((|v_#memory_$Pointer$.base_44| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_24| (Array Int (Array Int Int)))) (and (= |v_#memory_$Pointer$.base_24| (store |v_#memory_$Pointer$.base_44| |ULTIMATE.start_main_~head~0#1.base| (store (select |v_#memory_$Pointer$.base_44| |ULTIMATE.start_main_~head~0#1.base|) 4 (select (select |v_#memory_$Pointer$.base_24| |ULTIMATE.start_main_~head~0#1.base|) 4)))) (= (store |v_#memory_$Pointer$.base_24| |ULTIMATE.start_main_~head~0#1.base| (store (select |v_#memory_$Pointer$.base_24| |ULTIMATE.start_main_~head~0#1.base|) 0 (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|) 0))) |#memory_$Pointer$.base|))) (exists ((|v_#memory_$Pointer$.offset_44| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_24| (Array Int (Array Int Int)))) (and (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_24| |ULTIMATE.start_main_~head~0#1.base| (store (select |v_#memory_$Pointer$.offset_24| |ULTIMATE.start_main_~head~0#1.base|) 0 0))) (= (store |v_#memory_$Pointer$.offset_44| |ULTIMATE.start_main_~head~0#1.base| (store (select |v_#memory_$Pointer$.offset_44| |ULTIMATE.start_main_~head~0#1.base|) 4 (select (select |v_#memory_$Pointer$.offset_24| |ULTIMATE.start_main_~head~0#1.base|) 4))) |v_#memory_$Pointer$.offset_24|))) (<= (+ |ULTIMATE.start_main_~head~0#1.base| 1) |#StackHeapBarrier|) (= |ULTIMATE.start_main_~head~0#1.offset| 0) (exists ((|v_#valid_24| (Array Int Int))) (and (= (store |v_#valid_24| |ULTIMATE.start_main_~head~0#1.base| 1) |#valid|) (= (select |v_#valid_24| |ULTIMATE.start_main_~head~0#1.base|) 0))) (not (= |ULTIMATE.start_main_~x~0#1.base| 0)))' at error location [2024-11-09 04:48:30,897 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:48:30,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:48:30,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-09 04:48:30,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300459656] [2024-11-09 04:48:30,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:48:30,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 04:48:30,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:48:30,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 04:48:30,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=563, Unknown=1, NotChecked=0, Total=650 [2024-11-09 04:48:30,899 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 15 states, 15 states have (on average 2.2) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:48:31,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:48:31,653 INFO L93 Difference]: Finished difference Result 71 states and 89 transitions. [2024-11-09 04:48:31,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 04:48:31,654 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-09 04:48:31,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:48:31,655 INFO L225 Difference]: With dead ends: 71 [2024-11-09 04:48:31,656 INFO L226 Difference]: Without dead ends: 69 [2024-11-09 04:48:31,656 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=151, Invalid=904, Unknown=1, NotChecked=0, Total=1056 [2024-11-09 04:48:31,658 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 95 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 04:48:31,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 168 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 04:48:31,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-09 04:48:31,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 37. [2024-11-09 04:48:31,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 36 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:48:31,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2024-11-09 04:48:31,668 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 15 [2024-11-09 04:48:31,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:48:31,669 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2024-11-09 04:48:31,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:48:31,669 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2024-11-09 04:48:31,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 04:48:31,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:48:31,670 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:48:31,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 04:48:31,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:48:31,875 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:48:31,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:48:31,876 INFO L85 PathProgramCache]: Analyzing trace with hash 2063938213, now seen corresponding path program 1 times [2024-11-09 04:48:31,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:48:31,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462425300] [2024-11-09 04:48:31,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:48:31,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:48:31,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:48:32,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:48:32,147 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:48:32,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462425300] [2024-11-09 04:48:32,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462425300] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:48:32,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:48:32,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 04:48:32,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193345749] [2024-11-09 04:48:32,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:48:32,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 04:48:32,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:48:32,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 04:48:32,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:48:32,149 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:48:32,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:48:32,325 INFO L93 Difference]: Finished difference Result 72 states and 91 transitions. [2024-11-09 04:48:32,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:48:32,328 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-09 04:48:32,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:48:32,329 INFO L225 Difference]: With dead ends: 72 [2024-11-09 04:48:32,329 INFO L226 Difference]: Without dead ends: 64 [2024-11-09 04:48:32,330 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-09 04:48:32,331 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 53 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:48:32,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 67 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:48:32,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-09 04:48:32,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 44. [2024-11-09 04:48:32,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.302325581395349) internal successors, (56), 43 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:48:32,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2024-11-09 04:48:32,348 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 16 [2024-11-09 04:48:32,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:48:32,350 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2024-11-09 04:48:32,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:48:32,351 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2024-11-09 04:48:32,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 04:48:32,351 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:48:32,351 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:48:32,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 04:48:32,352 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:48:32,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:48:32,352 INFO L85 PathProgramCache]: Analyzing trace with hash 459094605, now seen corresponding path program 1 times [2024-11-09 04:48:32,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:48:32,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959677730] [2024-11-09 04:48:32,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:48:32,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:48:32,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:48:32,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:48:32,874 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:48:32,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959677730] [2024-11-09 04:48:32,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959677730] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:48:32,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079675951] [2024-11-09 04:48:32,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:48:32,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:48:32,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:48:32,877 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:48:32,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 04:48:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:48:32,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-09 04:48:32,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:48:33,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2024-11-09 04:48:33,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-09 04:48:33,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2024-11-09 04:48:33,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2024-11-09 04:48:33,107 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-11-09 04:48:33,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-11-09 04:48:33,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-09 04:48:33,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2024-11-09 04:48:33,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7 [2024-11-09 04:48:33,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:48:33,379 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:48:33,491 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:48:33,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 31 [2024-11-09 04:48:33,500 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:48:33,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2024-11-09 04:48:33,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-09 04:48:33,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-09 04:48:33,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:48:33,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079675951] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:48:33,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [750298640] [2024-11-09 04:48:33,768 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-09 04:48:33,768 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:48:33,768 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:48:33,769 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:48:33,769 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:48:34,559 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:48:38,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [750298640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:48:38,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:48:38,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6, 6, 6] total 21 [2024-11-09 04:48:38,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592470966] [2024-11-09 04:48:38,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:48:38,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 04:48:38,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:48:38,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 04:48:38,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2024-11-09 04:48:38,960 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:48:41,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 04:48:43,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 04:48:45,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 04:48:47,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-09 04:48:48,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:48:48,278 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2024-11-09 04:48:48,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 04:48:48,279 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-09 04:48:48,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:48:48,280 INFO L225 Difference]: With dead ends: 57 [2024-11-09 04:48:48,280 INFO L226 Difference]: Without dead ends: 44 [2024-11-09 04:48:48,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 31 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2024-11-09 04:48:48,281 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 2 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:48:48,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 49 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 108 Invalid, 5 Unknown, 0 Unchecked, 9.3s Time] [2024-11-09 04:48:48,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-09 04:48:48,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2024-11-09 04:48:48,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.2790697674418605) internal successors, (55), 43 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:48:48,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2024-11-09 04:48:48,291 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 17 [2024-11-09 04:48:48,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:48:48,292 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2024-11-09 04:48:48,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:48:48,292 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2024-11-09 04:48:48,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 04:48:48,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:48:48,293 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:48:48,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 04:48:48,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 04:48:48,496 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:48:48,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:48:48,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1332061312, now seen corresponding path program 1 times [2024-11-09 04:48:48,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:48:48,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833455849] [2024-11-09 04:48:48,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:48:48,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:48:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:48:48,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:48:48,653 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:48:48,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833455849] [2024-11-09 04:48:48,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833455849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:48:48,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:48:48,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 04:48:48,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490936737] [2024-11-09 04:48:48,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:48:48,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 04:48:48,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:48:48,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 04:48:48,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:48:48,656 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:48:48,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:48:48,864 INFO L93 Difference]: Finished difference Result 62 states and 75 transitions. [2024-11-09 04:48:48,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:48:48,867 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-09 04:48:48,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:48:48,868 INFO L225 Difference]: With dead ends: 62 [2024-11-09 04:48:48,868 INFO L226 Difference]: Without dead ends: 49 [2024-11-09 04:48:48,868 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-09 04:48:48,869 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 21 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:48:48,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 64 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:48:48,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-09 04:48:48,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 37. [2024-11-09 04:48:48,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.25) internal successors, (45), 36 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:48:48,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2024-11-09 04:48:48,887 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 18 [2024-11-09 04:48:48,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:48:48,887 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2024-11-09 04:48:48,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:48:48,887 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2024-11-09 04:48:48,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 04:48:48,889 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:48:48,889 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:48:48,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 04:48:48,890 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:48:48,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:48:48,891 INFO L85 PathProgramCache]: Analyzing trace with hash -232460466, now seen corresponding path program 1 times [2024-11-09 04:48:48,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:48:48,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294296649] [2024-11-09 04:48:48,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:48:48,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:48:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:48:49,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:48:49,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:48:49,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294296649] [2024-11-09 04:48:49,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294296649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:48:49,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:48:49,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 04:48:49,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196188231] [2024-11-09 04:48:49,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:48:49,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 04:48:49,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:48:49,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 04:48:49,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:48:49,102 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:48:49,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:48:49,275 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2024-11-09 04:48:49,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 04:48:49,276 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-09 04:48:49,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:48:49,277 INFO L225 Difference]: With dead ends: 51 [2024-11-09 04:48:49,277 INFO L226 Difference]: Without dead ends: 32 [2024-11-09 04:48:49,277 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 04:48:49,278 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 9 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:48:49,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 56 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:48:49,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-09 04:48:49,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-09 04:48:49,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:48:49,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2024-11-09 04:48:49,293 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 19 [2024-11-09 04:48:49,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:48:49,293 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2024-11-09 04:48:49,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:48:49,294 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2024-11-09 04:48:49,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 04:48:49,294 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:48:49,294 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:48:49,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 04:48:49,295 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:48:49,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:48:49,295 INFO L85 PathProgramCache]: Analyzing trace with hash 224172626, now seen corresponding path program 1 times [2024-11-09 04:48:49,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:48:49,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728535663] [2024-11-09 04:48:49,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:48:49,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:48:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:48:50,155 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:48:50,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:48:50,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728535663] [2024-11-09 04:48:50,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728535663] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:48:50,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100263502] [2024-11-09 04:48:50,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:48:50,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:48:50,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:48:50,158 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:48:50,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 04:48:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:48:50,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-09 04:48:50,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:48:50,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-09 04:48:50,319 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 11 treesize of output 7 [2024-11-09 04:48:50,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:48:50,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:48:50,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 34 [2024-11-09 04:48:50,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 11 [2024-11-09 04:48:50,456 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-09 04:48:50,490 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-09 04:48:50,491 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 74 [2024-11-09 04:48:50,499 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2024-11-09 04:48:50,570 INFO L349 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2024-11-09 04:48:50,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2024-11-09 04:48:50,631 INFO L349 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2024-11-09 04:48:50,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 25 treesize of output 29 [2024-11-09 04:48:50,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-09 04:48:50,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2024-11-09 04:48:50,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:48:50,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 36 [2024-11-09 04:48:50,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:48:50,915 INFO L349 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2024-11-09 04:48:50,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2024-11-09 04:48:50,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:48:50,928 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 33 [2024-11-09 04:48:50,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:48:50,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2024-11-09 04:48:50,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7 [2024-11-09 04:48:51,590 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-09 04:48:51,590 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 40 [2024-11-09 04:48:51,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 15 treesize of output 7 [2024-11-09 04:48:51,749 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:48:51,749 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:48:52,074 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:48:52,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 37 [2024-11-09 04:48:52,087 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:48:52,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 34 [2024-11-09 04:48:52,337 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:48:52,338 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 56 [2024-11-09 04:48:52,394 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:48:52,395 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 549 treesize of output 440 [2024-11-09 04:48:52,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 182 [2024-11-09 04:48:52,435 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:48:52,436 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 182 treesize of output 159 [2024-11-09 04:48:52,493 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:48:52,493 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 1039 treesize of output 1014 [2024-11-09 04:48:52,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 114 [2024-11-09 04:48:52,558 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:48:52,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 123 [2024-11-09 04:48:52,595 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:48:52,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 117 treesize of output 119 [2024-11-09 04:48:55,977 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 04:48:55,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 11 [2024-11-09 04:48:58,233 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:48:58,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100263502] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:48:58,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1941386559] [2024-11-09 04:48:58,236 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-09 04:48:58,236 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:48:58,236 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:48:58,236 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:48:58,237 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:49:01,369 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:49:03,566 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1401#(and (<= 1 |#StackHeapBarrier|) (= (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ |ULTIMATE.start_main_~x~0#1.offset| 4)) 1) (= |ULTIMATE.start_main_~head~0#1.offset| 0) (or (not (= |ULTIMATE.start_main_~x~0#1.base| 0)) (not (= |ULTIMATE.start_main_~x~0#1.offset| 0))))' at error location [2024-11-09 04:49:03,566 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:49:03,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:49:03,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 10] total 23 [2024-11-09 04:49:03,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265762027] [2024-11-09 04:49:03,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:49:03,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 04:49:03,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:49:03,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 04:49:03,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1110, Unknown=0, NotChecked=0, Total=1260 [2024-11-09 04:49:03,569 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 23 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:06,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:49:06,710 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2024-11-09 04:49:06,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-09 04:49:06,711 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 23 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-09 04:49:06,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:49:06,712 INFO L225 Difference]: With dead ends: 63 [2024-11-09 04:49:06,712 INFO L226 Difference]: Without dead ends: 61 [2024-11-09 04:49:06,713 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=298, Invalid=1958, Unknown=0, NotChecked=0, Total=2256 [2024-11-09 04:49:06,714 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 168 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:49:06,715 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 180 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 04:49:06,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-09 04:49:06,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 40. [2024-11-09 04:49:06,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.205128205128205) internal successors, (47), 39 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:06,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2024-11-09 04:49:06,726 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 19 [2024-11-09 04:49:06,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:49:06,727 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2024-11-09 04:49:06,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 23 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:06,727 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2024-11-09 04:49:06,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-09 04:49:06,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:49:06,728 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:49:06,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 04:49:06,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:49:06,932 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:49:06,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:49:06,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1640784403, now seen corresponding path program 1 times [2024-11-09 04:49:06,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:49:06,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352523116] [2024-11-09 04:49:06,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:49:06,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:49:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:49:07,432 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:49:07,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:49:07,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352523116] [2024-11-09 04:49:07,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352523116] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:49:07,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348379807] [2024-11-09 04:49:07,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:49:07,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:49:07,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:49:07,436 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:49:07,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 04:49:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:49:07,559 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-09 04:49:07,570 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:49:07,591 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 13 treesize of output 9 [2024-11-09 04:49:07,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-09 04:49:07,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2024-11-09 04:49:07,684 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-09 04:49:07,706 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-09 04:49:07,706 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39 [2024-11-09 04:49:07,725 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-11-09 04:49:07,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-11-09 04:49:07,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2024-11-09 04:49:07,868 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 16 treesize of output 8 [2024-11-09 04:49:07,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-09 04:49:07,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:49:07,935 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:49:08,039 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_530 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_530) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 1))) is different from false [2024-11-09 04:49:08,058 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_530 (Array Int Int))) (not (= (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_530) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 1))) is different from false [2024-11-09 04:49:08,081 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_530 (Array Int Int))) (not (= (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) v_ArrVal_530) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 1))) is different from false [2024-11-09 04:49:08,121 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:49:08,121 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 40 [2024-11-09 04:49:08,158 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:49:08,158 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 91 treesize of output 78 [2024-11-09 04:49:08,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 58 [2024-11-09 04:49:08,509 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-09 04:49:08,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348379807] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:49:08,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1330030673] [2024-11-09 04:49:08,512 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2024-11-09 04:49:08,512 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:49:08,512 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:49:08,513 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:49:08,513 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:49:12,147 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-09 04:49:17,215 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1707#(and (<= 1 |#StackHeapBarrier|) (= (select (select |#memory_int| |ULTIMATE.start_main_~x~0#1.base|) (+ |ULTIMATE.start_main_~x~0#1.offset| 4)) 1) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~head~0#1.base|) 0) |ULTIMATE.start_main_~x~0#1.offset|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~head~0#1.base|) 0) |ULTIMATE.start_main_~x~0#1.base|) (exists ((|v_#valid_45| (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.base_94| Int) (|v_ULTIMATE.start_main_#t~malloc11#1.base_6| Int) (|v_#memory_int_21| (Array Int (Array Int Int))) (|v_#memory_int_89| (Array Int (Array Int Int))) (|v_ULTIMATE.start_main_~x~0#1.offset_93| Int) (|v_#memory_$Pointer$.base_83| (Array Int (Array Int Int))) (|v_#length_37| (Array Int Int)) (|v_#memory_$Pointer$.offset_25| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_25| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_81| (Array Int (Array Int Int)))) (and (= (store |v_#memory_$Pointer$.offset_81| |v_ULTIMATE.start_main_~x~0#1.base_94| (store (store (select |v_#memory_$Pointer$.offset_81| |v_ULTIMATE.start_main_~x~0#1.base_94|) |v_ULTIMATE.start_main_~x~0#1.offset_93| 0) (+ 4 |v_ULTIMATE.start_main_~x~0#1.offset_93|) (select (select |v_#memory_$Pointer$.offset_25| |v_ULTIMATE.start_main_~x~0#1.base_94|) (+ 4 |v_ULTIMATE.start_main_~x~0#1.offset_93|)))) |v_#memory_$Pointer$.offset_25|) (= (store |v_#memory_$Pointer$.base_25| |v_ULTIMATE.start_main_~x~0#1.base_94| (store (select |v_#memory_$Pointer$.base_25| |v_ULTIMATE.start_main_~x~0#1.base_94|) |v_ULTIMATE.start_main_~x~0#1.offset_93| (select (select |v_#memory_$Pointer$.base_83| |v_ULTIMATE.start_main_~x~0#1.base_94|) |v_ULTIMATE.start_main_~x~0#1.offset_93|))) |#memory_$Pointer$.base|) (= (store |v_#valid_45| |v_ULTIMATE.start_main_#t~malloc11#1.base_6| 1) |#valid|) (= (select |v_#valid_45| |v_ULTIMATE.start_main_#t~malloc11#1.base_6|) 0) (= |#memory_int| (store |v_#memory_int_21| |v_ULTIMATE.start_main_~x~0#1.base_94| (store (store (select |v_#memory_int_21| |v_ULTIMATE.start_main_~x~0#1.base_94|) (+ 4 |v_ULTIMATE.start_main_~x~0#1.offset_93|) 1) |v_ULTIMATE.start_main_~x~0#1.offset_93| (select (select |#memory_int| |v_ULTIMATE.start_main_~x~0#1.base_94|) |v_ULTIMATE.start_main_~x~0#1.offset_93|)))) (<= (+ |v_ULTIMATE.start_main_#t~malloc11#1.base_6| 1) |#StackHeapBarrier|) (= (store |v_#memory_$Pointer$.base_83| |v_ULTIMATE.start_main_~x~0#1.base_94| (store (store (select |v_#memory_$Pointer$.base_83| |v_ULTIMATE.start_main_~x~0#1.base_94|) |v_ULTIMATE.start_main_~x~0#1.offset_93| |v_ULTIMATE.start_main_#t~malloc11#1.base_6|) (+ 4 |v_ULTIMATE.start_main_~x~0#1.offset_93|) (select (select |v_#memory_$Pointer$.base_25| |v_ULTIMATE.start_main_~x~0#1.base_94|) (+ 4 |v_ULTIMATE.start_main_~x~0#1.offset_93|)))) |v_#memory_$Pointer$.base_25|) (not (= |v_ULTIMATE.start_main_#t~malloc11#1.base_6| 0)) (= |v_#memory_int_21| (store |v_#memory_int_89| |v_ULTIMATE.start_main_~x~0#1.base_94| (store (select |v_#memory_int_89| |v_ULTIMATE.start_main_~x~0#1.base_94|) |v_ULTIMATE.start_main_~x~0#1.offset_93| (select (select |v_#memory_int_21| |v_ULTIMATE.start_main_~x~0#1.base_94|) |v_ULTIMATE.start_main_~x~0#1.offset_93|)))) (= |#length| (store |v_#length_37| |v_ULTIMATE.start_main_#t~malloc11#1.base_6| 8)) (= |#memory_$Pointer$.offset| (store |v_#memory_$Pointer$.offset_25| |v_ULTIMATE.start_main_~x~0#1.base_94| (store (select |v_#memory_$Pointer$.offset_25| |v_ULTIMATE.start_main_~x~0#1.base_94|) |v_ULTIMATE.start_main_~x~0#1.offset_93| (select (select |v_#memory_$Pointer$.offset_81| |v_ULTIMATE.start_main_~x~0#1.base_94|) |v_ULTIMATE.start_main_~x~0#1.offset_93|)))))) (= |ULTIMATE.start_main_~head~0#1.offset| 0) (or (not (= |ULTIMATE.start_main_~x~0#1.base| 0)) (not (= |ULTIMATE.start_main_~x~0#1.offset| 0))) (= (select (select |#memory_int| |ULTIMATE.start_main_~head~0#1.base|) 4) 1))' at error location [2024-11-09 04:49:17,215 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-09 04:49:17,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:49:17,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-09 04:49:17,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139835601] [2024-11-09 04:49:17,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 04:49:17,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 04:49:17,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:49:17,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 04:49:17,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=802, Unknown=4, NotChecked=180, Total=1122 [2024-11-09 04:49:17,217 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:17,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:49:17,749 INFO L93 Difference]: Finished difference Result 78 states and 96 transitions. [2024-11-09 04:49:17,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 04:49:17,750 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-09 04:49:17,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:49:17,751 INFO L225 Difference]: With dead ends: 78 [2024-11-09 04:49:17,751 INFO L226 Difference]: Without dead ends: 71 [2024-11-09 04:49:17,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=174, Invalid=1024, Unknown=4, NotChecked=204, Total=1406 [2024-11-09 04:49:17,752 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 82 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 169 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:49:17,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 159 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 131 Invalid, 0 Unknown, 169 Unchecked, 0.3s Time] [2024-11-09 04:49:17,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-09 04:49:17,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 54. [2024-11-09 04:49:17,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 53 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:17,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2024-11-09 04:49:17,768 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 21 [2024-11-09 04:49:17,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:49:17,768 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2024-11-09 04:49:17,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:17,769 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2024-11-09 04:49:17,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 04:49:17,769 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:49:17,769 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:49:17,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-09 04:49:17,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 04:49:17,970 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:49:17,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:49:17,971 INFO L85 PathProgramCache]: Analyzing trace with hash -523072409, now seen corresponding path program 1 times [2024-11-09 04:49:17,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:49:17,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140802971] [2024-11-09 04:49:17,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:49:17,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:49:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:49:18,342 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 04:49:18,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:49:18,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140802971] [2024-11-09 04:49:18,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140802971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:49:18,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:49:18,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 04:49:18,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797062243] [2024-11-09 04:49:18,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:49:18,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 04:49:18,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:49:18,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 04:49:18,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 04:49:18,345 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:18,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:49:18,591 INFO L93 Difference]: Finished difference Result 71 states and 85 transitions. [2024-11-09 04:49:18,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 04:49:18,592 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-09 04:49:18,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:49:18,593 INFO L225 Difference]: With dead ends: 71 [2024-11-09 04:49:18,593 INFO L226 Difference]: Without dead ends: 57 [2024-11-09 04:49:18,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-09 04:49:18,595 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 12 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:49:18,596 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 56 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:49:18,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-09 04:49:18,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2024-11-09 04:49:18,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.2264150943396226) internal successors, (65), 53 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:18,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2024-11-09 04:49:18,619 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 22 [2024-11-09 04:49:18,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:49:18,619 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2024-11-09 04:49:18,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:49:18,620 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2024-11-09 04:49:18,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-09 04:49:18,622 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:49:18,622 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:49:18,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 04:49:18,622 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:49:18,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:49:18,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1621266503, now seen corresponding path program 2 times [2024-11-09 04:49:18,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:49:18,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271527153] [2024-11-09 04:49:18,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:49:18,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:49:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:49:19,410 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:49:19,410 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:49:19,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271527153] [2024-11-09 04:49:19,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271527153] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:49:19,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457953280] [2024-11-09 04:49:19,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 04:49:19,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:49:19,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:49:19,414 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:49:19,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 04:49:19,727 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 04:49:19,727 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:49:19,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-09 04:49:19,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:49:19,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-09 04:49:19,833 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2024-11-09 04:49:19,840 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2024-11-09 04:49:19,871 INFO L349 Elim1Store]: treesize reduction 18, result has 21.7 percent of original size [2024-11-09 04:49:19,871 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2024-11-09 04:49:19,910 INFO L349 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2024-11-09 04:49:19,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 31 [2024-11-09 04:49:19,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 [2024-11-09 04:49:19,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 [2024-11-09 04:49:19,983 INFO L349 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2024-11-09 04:49:19,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 25 treesize of output 29 [2024-11-09 04:49:20,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2024-11-09 04:49:20,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:49:20,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:49:20,143 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 41 [2024-11-09 04:49:20,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:49:20,165 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2024-11-09 04:49:20,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 51 [2024-11-09 04:49:20,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:49:20,185 INFO L349 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2024-11-09 04:49:20,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2024-11-09 04:49:20,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7 [2024-11-09 04:49:20,762 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:49:20,762 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:49:20,858 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:49:20,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 65 [2024-11-09 04:49:20,867 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:49:20,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 56 [2024-11-09 04:49:21,225 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:49:21,226 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 177 treesize of output 162 [2024-11-09 04:49:21,241 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:49:21,241 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 170 [2024-11-09 04:49:21,421 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:49:21,421 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 7 new quantified variables, introduced 10 case distinctions, treesize of input 1745 treesize of output 1309 [2024-11-09 04:49:23,181 INFO L349 Elim1Store]: treesize reduction 366, result has 58.8 percent of original size [2024-11-09 04:49:23,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 12 new quantified variables, introduced 55 case distinctions, treesize of input 4639 treesize of output 4712 [2024-11-09 04:49:23,851 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:49:23,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 2318 treesize of output 2306 [2024-11-09 04:49:24,507 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:49:24,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 1747 treesize of output 1761 [2024-11-09 04:49:25,082 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:49:25,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2262 treesize of output 2224 [2024-11-09 04:49:25,585 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:49:25,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1826 treesize of output 1778 [2024-11-09 04:49:25,785 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:49:25,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2035 treesize of output 1987 [2024-11-09 04:49:26,131 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:49:26,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1730 treesize of output 1710 [2024-11-09 04:52:37,128 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-09 04:52:37,128 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2024-11-09 04:52:37,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2024-11-09 04:52:37,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [876258654] [2024-11-09 04:52:37,131 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2024-11-09 04:52:37,131 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:52:37,132 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:52:37,132 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:52:37,132 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:52:37,135 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:132) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.checkSatTerm(SmtUtils.java:326) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.isFalse(SymbolicTools.java:220) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.RelationCheckUtil.isEqBottom_SolverAlphaSolver(RelationCheckUtil.java:56) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.ExplicitValueDomain.isEqBottom(ExplicitValueDomain.java:73) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.CompoundDomain.isEqBottom(CompoundDomain.java:84) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.StatsWrapperDomain.isEqBottom(StatsWrapperDomain.java:69) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.earlyExitAfterStep(DagInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 44 more [2024-11-09 04:52:37,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 04:52:37,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2024-11-09 04:52:37,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014668603] [2024-11-09 04:52:37,140 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 04:52:37,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 04:52:37,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:52:37,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 04:52:37,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-09 04:52:37,141 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:52:37,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-09 04:52:37,142 INFO L432 NwaCegarLoop]: 0 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, 0 SdHoareTripleChecker+Invalid, 1 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 04:52:37,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:52:37,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 04:52:37,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 04:52:37,345 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertCodeBlock(IncrementalHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:278) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:385) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 36 more [2024-11-09 04:52:37,352 INFO L158 Benchmark]: Toolchain (without parser) took 255425.66ms. Allocated memory was 165.7MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 129.7MB in the beginning and 684.2MB in the end (delta: -554.5MB). Peak memory consumption was 848.2MB. Max. memory is 16.1GB. [2024-11-09 04:52:37,352 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 121.6MB. Free memory is still 89.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 04:52:37,352 INFO L158 Benchmark]: CACSL2BoogieTranslator took 593.94ms. Allocated memory is still 165.7MB. Free memory was 129.7MB in the beginning and 109.6MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-09 04:52:37,353 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.83ms. Allocated memory is still 165.7MB. Free memory was 109.6MB in the beginning and 107.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 04:52:37,353 INFO L158 Benchmark]: Boogie Preprocessor took 74.43ms. Allocated memory is still 165.7MB. Free memory was 107.5MB in the beginning and 105.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 04:52:37,353 INFO L158 Benchmark]: RCFGBuilder took 627.41ms. Allocated memory is still 165.7MB. Free memory was 105.8MB in the beginning and 88.7MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-09 04:52:37,355 INFO L158 Benchmark]: TraceAbstraction took 254031.48ms. Allocated memory was 165.7MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 88.2MB in the beginning and 684.2MB in the end (delta: -596.0MB). Peak memory consumption was 806.3MB. Max. memory is 16.1GB. [2024-11-09 04:52:37,361 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 121.6MB. Free memory is still 89.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 593.94ms. Allocated memory is still 165.7MB. Free memory was 129.7MB in the beginning and 109.6MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.83ms. Allocated memory is still 165.7MB. Free memory was 109.6MB in the beginning and 107.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.43ms. Allocated memory is still 165.7MB. Free memory was 107.5MB in the beginning and 105.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 627.41ms. Allocated memory is still 165.7MB. Free memory was 105.8MB in the beginning and 88.7MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 254031.48ms. Allocated memory was 165.7MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 88.2MB in the beginning and 684.2MB in the end (delta: -596.0MB). Peak memory consumption was 806.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-simple-white-blue-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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_af4553ec-b488-4a41-8567-a994af80bbe6/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 b63900034700ff8018e29578512f73f88317ae4b603a38b2f2f558c77b57812d --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 04:52:39,989 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 04:52:40,098 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-09 04:52:40,108 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 04:52:40,109 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 04:52:40,153 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 04:52:40,156 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 04:52:40,157 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 04:52:40,158 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 04:52:40,160 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 04:52:40,161 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 04:52:40,161 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 04:52:40,162 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 04:52:40,162 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 04:52:40,165 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 04:52:40,165 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 04:52:40,166 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 04:52:40,167 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 04:52:40,167 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 04:52:40,168 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 04:52:40,170 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 04:52:40,171 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 04:52:40,172 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 04:52:40,172 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 04:52:40,173 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 04:52:40,173 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-09 04:52:40,173 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 04:52:40,174 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-09 04:52:40,174 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 04:52:40,175 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 04:52:40,175 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 04:52:40,176 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 04:52:40,176 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 04:52:40,176 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 04:52:40,177 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 04:52:40,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:52:40,178 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 04:52:40,178 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 04:52:40,179 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 04:52:40,179 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-09 04:52:40,180 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-09 04:52:40,182 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 04:52:40,182 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 04:52:40,182 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_af4553ec-b488-4a41-8567-a994af80bbe6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b63900034700ff8018e29578512f73f88317ae4b603a38b2f2f558c77b57812d [2024-11-09 04:52:40,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 04:52:40,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 04:52:40,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 04:52:40,691 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 04:52:40,691 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 04:52:40,692 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/forester-heap/sll-simple-white-blue-1.i Unable to find full path for "g++" [2024-11-09 04:52:43,304 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 04:52:43,651 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 04:52:43,651 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/sv-benchmarks/c/forester-heap/sll-simple-white-blue-1.i [2024-11-09 04:52:43,666 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/data/cea2c51f9/a9397411c9fe476696f1ccdf16f3fce6/FLAGa25f24e57 [2024-11-09 04:52:43,689 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/data/cea2c51f9/a9397411c9fe476696f1ccdf16f3fce6 [2024-11-09 04:52:43,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 04:52:43,694 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 04:52:43,695 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 04:52:43,695 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 04:52:43,701 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 04:52:43,702 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:52:43" (1/1) ... [2024-11-09 04:52:43,703 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60e1c6a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:52:43, skipping insertion in model container [2024-11-09 04:52:43,703 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:52:43" (1/1) ... [2024-11-09 04:52:43,762 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 04:52:44,238 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_af4553ec-b488-4a41-8567-a994af80bbe6/sv-benchmarks/c/forester-heap/sll-simple-white-blue-1.i[22605,22618] [2024-11-09 04:52:44,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:52:44,302 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 04:52:44,386 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_af4553ec-b488-4a41-8567-a994af80bbe6/sv-benchmarks/c/forester-heap/sll-simple-white-blue-1.i[22605,22618] [2024-11-09 04:52:44,391 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:52:44,438 INFO L204 MainTranslator]: Completed translation [2024-11-09 04:52:44,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:52:44 WrapperNode [2024-11-09 04:52:44,439 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 04:52:44,441 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 04:52:44,442 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 04:52:44,442 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 04:52:44,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:52:44" (1/1) ... [2024-11-09 04:52:44,479 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:52:44" (1/1) ... [2024-11-09 04:52:44,506 INFO L138 Inliner]: procedures = 122, calls = 31, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 103 [2024-11-09 04:52:44,506 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 04:52:44,507 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 04:52:44,508 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 04:52:44,508 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 04:52:44,519 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:52:44" (1/1) ... [2024-11-09 04:52:44,519 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:52:44" (1/1) ... [2024-11-09 04:52:44,523 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:52:44" (1/1) ... [2024-11-09 04:52:44,523 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:52:44" (1/1) ... [2024-11-09 04:52:44,534 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:52:44" (1/1) ... [2024-11-09 04:52:44,539 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:52:44" (1/1) ... [2024-11-09 04:52:44,543 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:52:44" (1/1) ... [2024-11-09 04:52:44,545 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:52:44" (1/1) ... [2024-11-09 04:52:44,549 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 04:52:44,550 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 04:52:44,550 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 04:52:44,551 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 04:52:44,551 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:52:44" (1/1) ... [2024-11-09 04:52:44,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:52:44,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:52:44,596 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 04:52:44,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 04:52:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2024-11-09 04:52:44,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 04:52:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 04:52:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 04:52:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 04:52:44,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 04:52:44,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2024-11-09 04:52:44,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-09 04:52:44,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 04:52:44,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 04:52:44,804 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 04:52:44,806 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 04:52:45,249 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-09 04:52:45,250 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 04:52:45,270 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 04:52:45,271 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-09 04:52:45,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:52:45 BoogieIcfgContainer [2024-11-09 04:52:45,272 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 04:52:45,276 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 04:52:45,276 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 04:52:45,281 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 04:52:45,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:52:43" (1/3) ... [2024-11-09 04:52:45,282 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@276a2cda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:52:45, skipping insertion in model container [2024-11-09 04:52:45,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:52:44" (2/3) ... [2024-11-09 04:52:45,283 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@276a2cda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:52:45, skipping insertion in model container [2024-11-09 04:52:45,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:52:45" (3/3) ... [2024-11-09 04:52:45,285 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-simple-white-blue-1.i [2024-11-09 04:52:45,307 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 04:52:45,308 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 04:52:45,371 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 04:52:45,379 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;@c1fb761, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 04:52:45,380 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 04:52:45,385 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 27 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:52:45,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 04:52:45,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:45,394 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:52:45,394 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:52:45,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:45,401 INFO L85 PathProgramCache]: Analyzing trace with hash 467989736, now seen corresponding path program 1 times [2024-11-09 04:52:45,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:45,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221807635] [2024-11-09 04:52:45,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:45,418 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 04:52:45,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:45,423 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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 04:52:45,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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 04:52:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:45,603 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-09 04:52:45,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:45,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:45,631 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:52:45,632 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:52:45,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221807635] [2024-11-09 04:52:45,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221807635] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:52:45,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:52:45,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:52:45,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570151879] [2024-11-09 04:52:45,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:52:45,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 04:52:45,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:52:45,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 04:52:45,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 04:52:45,682 INFO L87 Difference]: Start difference. First operand has 28 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 27 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:52:45,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:45,706 INFO L93 Difference]: Finished difference Result 51 states and 78 transitions. [2024-11-09 04:52:45,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 04:52:45,708 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-09 04:52:45,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:45,716 INFO L225 Difference]: With dead ends: 51 [2024-11-09 04:52:45,716 INFO L226 Difference]: Without dead ends: 20 [2024-11-09 04:52:45,719 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 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 04:52:45,724 INFO L432 NwaCegarLoop]: 35 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, 35 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 04:52:45,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:52:45,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-09 04:52:45,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-09 04:52:45,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:52:45,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2024-11-09 04:52:45,761 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 12 [2024-11-09 04:52:45,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:45,762 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2024-11-09 04:52:45,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:52:45,763 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2024-11-09 04:52:45,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-09 04:52:45,764 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:45,764 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:52:45,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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 04:52:45,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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 04:52:45,965 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:52:45,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:45,966 INFO L85 PathProgramCache]: Analyzing trace with hash 70106654, now seen corresponding path program 1 times [2024-11-09 04:52:45,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:45,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1887523924] [2024-11-09 04:52:45,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:45,968 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 04:52:45,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:45,984 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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 04:52:45,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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 04:52:46,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:46,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 04:52:46,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:46,245 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 13 treesize of output 9 [2024-11-09 04:52:46,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-09 04:52:46,399 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 04:52:46,444 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-09 04:52:46,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 29 [2024-11-09 04:52:46,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2024-11-09 04:52:46,489 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 04:52:46,520 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-09 04:52:46,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-09 04:52:46,719 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 33 treesize of output 21 [2024-11-09 04:52:46,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2024-11-09 04:52:46,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:46,833 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:52:46,834 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:52:46,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1887523924] [2024-11-09 04:52:46,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1887523924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:52:46,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:52:46,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 04:52:46,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551414200] [2024-11-09 04:52:46,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:52:46,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 04:52:46,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:52:46,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 04:52:46,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 04:52:46,842 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:52:48,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:48,317 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2024-11-09 04:52:48,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 04:52:48,318 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-09 04:52:48,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:48,321 INFO L225 Difference]: With dead ends: 54 [2024-11-09 04:52:48,321 INFO L226 Difference]: Without dead ends: 52 [2024-11-09 04:52:48,322 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-09 04:52:48,324 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 48 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:48,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 64 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 04:52:48,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-09 04:52:48,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 31. [2024-11-09 04:52:48,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3) internal successors, (39), 30 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:52:48,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2024-11-09 04:52:48,336 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 14 [2024-11-09 04:52:48,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:48,336 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2024-11-09 04:52:48,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:52:48,337 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2024-11-09 04:52:48,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 04:52:48,338 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:48,338 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:52:48,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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)] Forceful destruction successful, exit code 0 [2024-11-09 04:52:48,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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 04:52:48,543 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:52:48,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:48,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1848775495, now seen corresponding path program 1 times [2024-11-09 04:52:48,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:48,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [750104637] [2024-11-09 04:52:48,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:48,549 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 04:52:48,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:48,551 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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 04:52:48,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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 04:52:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:48,700 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 04:52:48,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:48,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2024-11-09 04:52:48,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:48,817 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:52:48,817 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:52:48,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [750104637] [2024-11-09 04:52:48,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [750104637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:52:48,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:52:48,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 04:52:48,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911369416] [2024-11-09 04:52:48,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:52:48,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 04:52:48,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:52:48,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 04:52:48,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:52:48,823 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:52:49,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:49,300 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2024-11-09 04:52:49,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 04:52:49,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-09 04:52:49,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:49,302 INFO L225 Difference]: With dead ends: 50 [2024-11-09 04:52:49,302 INFO L226 Difference]: Without dead ends: 41 [2024-11-09 04:52:49,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-09 04:52:49,304 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 12 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:49,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 64 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 04:52:49,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-09 04:52:49,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2024-11-09 04:52:49,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:52:49,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2024-11-09 04:52:49,324 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 16 [2024-11-09 04:52:49,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:49,325 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2024-11-09 04:52:49,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:52:49,326 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2024-11-09 04:52:49,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-09 04:52:49,328 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:49,328 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:52:49,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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)] Ended with exit code 0 [2024-11-09 04:52:49,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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 04:52:49,529 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:52:49,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:49,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1551956643, now seen corresponding path program 1 times [2024-11-09 04:52:49,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:49,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176778074] [2024-11-09 04:52:49,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:49,532 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 04:52:49,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:49,535 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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 04:52:49,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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 04:52:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:49,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 04:52:49,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:49,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-09 04:52:49,764 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 11 treesize of output 7 [2024-11-09 04:52:49,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 18 [2024-11-09 04:52:49,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 11 [2024-11-09 04:52:49,922 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 21 treesize of output 16 [2024-11-09 04:52:50,047 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 04:52:50,071 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-09 04:52:50,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-09 04:52:50,081 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 11 treesize of output 7 [2024-11-09 04:52:50,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-09 04:52:50,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-09 04:52:50,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-09 04:52:50,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:50,324 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:52:50,727 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_135 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_130 (_ BitVec 1)) (v_ArrVal_132 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~head~0#1.base_13| (_ BitVec 32)) (v_ArrVal_131 (_ BitVec 32)) (v_ArrVal_129 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv1 32) (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_132) v_ArrVal_131 v_ArrVal_129) |v_ULTIMATE.start_main_~head~0#1.base_13| v_ArrVal_135) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd |c_ULTIMATE.start_main_~head~0#1.offset| (_ bv4 32))))) (not (= (_ bv0 1) (select (store |c_#valid| v_ArrVal_131 v_ArrVal_130) |v_ULTIMATE.start_main_~head~0#1.base_13|))) (not (= (_ bv0 1) (select |c_#valid| v_ArrVal_131))) (not (= v_ArrVal_132 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| (select v_ArrVal_132 |c_ULTIMATE.start_main_~x~0#1.offset|)))))) is different from false [2024-11-09 04:52:50,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-09 04:52:50,798 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:52:50,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [176778074] [2024-11-09 04:52:50,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [176778074] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:52:50,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [433162664] [2024-11-09 04:52:50,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:50,799 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:52:50,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:52:50,802 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:52:50,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-09 04:52:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:51,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-09 04:52:51,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:51,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-09 04:52:51,089 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 11 treesize of output 7 [2024-11-09 04:52:51,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2024-11-09 04:52:51,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:52:51,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-09 04:52:51,210 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-09 04:52:51,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-09 04:52:51,449 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 11 treesize of output 7 [2024-11-09 04:52:51,457 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 15 treesize of output 1 [2024-11-09 04:52:51,489 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-09 04:52:51,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2024-11-09 04:52:51,548 INFO L349 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2024-11-09 04:52:51,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2024-11-09 04:52:51,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-09 04:52:51,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-09 04:52:51,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:51,794 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:52:51,864 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_187 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~head~0#1.base_16| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~head~0#1.base_16|))) (not (= (_ bv1 32) (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~head~0#1.base_16| v_ArrVal_187) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd |c_ULTIMATE.start_main_~head~0#1.offset| (_ bv4 32))))))) is different from false [2024-11-09 04:52:52,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-09 04:52:52,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [433162664] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:52:52,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427745955] [2024-11-09 04:52:52,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:52,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:52:52,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:52:52,589 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:52:52,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 04:52:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:52,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 04:52:52,740 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:52,752 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 11 treesize of output 7 [2024-11-09 04:52:52,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-09 04:52:52,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 18 [2024-11-09 04:52:52,843 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 21 treesize of output 16 [2024-11-09 04:52:52,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 11 [2024-11-09 04:52:52,935 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-09 04:52:52,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-09 04:52:52,945 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 11 treesize of output 7 [2024-11-09 04:52:52,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-09 04:52:52,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 04:52:53,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-09 04:52:53,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-09 04:52:53,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:53,085 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:52:53,340 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_135 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~x~0#1.base_59| (_ BitVec 32)) (|v_ULTIMATE.start_main_~head~0#1.base_13| (_ BitVec 32)) (v_ArrVal_237 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_238 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_239 (_ BitVec 1))) (or (not (= (_ bv0 1) (select (store |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_59| v_ArrVal_239) |v_ULTIMATE.start_main_~head~0#1.base_13|))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_59|))) (not (= (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| (select v_ArrVal_238 |c_ULTIMATE.start_main_~x~0#1.offset|)) v_ArrVal_238)) (not (= (_ bv1 32) (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_238) |v_ULTIMATE.start_main_~x~0#1.base_59| v_ArrVal_237) |v_ULTIMATE.start_main_~head~0#1.base_13| v_ArrVal_135) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd |c_ULTIMATE.start_main_~head~0#1.offset| (_ bv4 32))))))) is different from false [2024-11-09 04:52:53,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-09 04:52:53,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427745955] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:52:53,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 04:52:53,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2024-11-09 04:52:53,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39870825] [2024-11-09 04:52:53,423 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 04:52:53,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 04:52:53,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:52:53,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 04:52:53,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=221, Unknown=10, NotChecked=96, Total=380 [2024-11-09 04:52:53,428 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:52:56,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:56,247 INFO L93 Difference]: Finished difference Result 72 states and 90 transitions. [2024-11-09 04:52:56,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 04:52:56,248 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-09 04:52:56,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:56,250 INFO L225 Difference]: With dead ends: 72 [2024-11-09 04:52:56,250 INFO L226 Difference]: Without dead ends: 70 [2024-11-09 04:52:56,253 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 71 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=118, Invalid=390, Unknown=10, NotChecked=132, Total=650 [2024-11-09 04:52:56,254 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 150 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 212 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:56,254 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 173 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 225 Invalid, 0 Unknown, 212 Unchecked, 2.2s Time] [2024-11-09 04:52:56,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-09 04:52:56,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 38. [2024-11-09 04:52:56,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 37 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:52:56,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2024-11-09 04:52:56,274 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 16 [2024-11-09 04:52:56,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:56,275 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2024-11-09 04:52:56,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:52:56,275 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2024-11-09 04:52:56,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-09 04:52:56,278 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:56,278 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:52:56,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-09 04:52:56,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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 04:52:56,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2024-11-09 04:52:56,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 04:52:56,883 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:52:56,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:56,883 INFO L85 PathProgramCache]: Analyzing trace with hash -2004395923, now seen corresponding path program 1 times [2024-11-09 04:52:56,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:56,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [475273876] [2024-11-09 04:52:56,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:56,884 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 04:52:56,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:56,886 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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 04:52:56,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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 04:52:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:57,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-09 04:52:57,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:57,123 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 11 treesize of output 7 [2024-11-09 04:52:57,131 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 7 treesize of output 3 [2024-11-09 04:52:57,136 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 7 treesize of output 3 [2024-11-09 04:52:57,140 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 11 treesize of output 7 [2024-11-09 04:52:57,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:57,234 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:52:57,234 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:52:57,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [475273876] [2024-11-09 04:52:57,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [475273876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:52:57,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:52:57,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 04:52:57,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043544897] [2024-11-09 04:52:57,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:52:57,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 04:52:57,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:52:57,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 04:52:57,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 04:52:57,236 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:52:58,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:52:58,002 INFO L93 Difference]: Finished difference Result 83 states and 102 transitions. [2024-11-09 04:52:58,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 04:52:58,003 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-09 04:52:58,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:52:58,004 INFO L225 Difference]: With dead ends: 83 [2024-11-09 04:52:58,006 INFO L226 Difference]: Without dead ends: 63 [2024-11-09 04:52:58,006 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-09 04:52:58,007 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 39 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 04:52:58,008 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 81 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 04:52:58,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-09 04:52:58,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 44. [2024-11-09 04:52:58,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.255813953488372) internal successors, (54), 43 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:52:58,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2024-11-09 04:52:58,033 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 17 [2024-11-09 04:52:58,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:52:58,034 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2024-11-09 04:52:58,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:52:58,034 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2024-11-09 04:52:58,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-09 04:52:58,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:52:58,036 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:52:58,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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 04:52:58,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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 04:52:58,237 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:52:58,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:52:58,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1105212027, now seen corresponding path program 1 times [2024-11-09 04:52:58,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:52:58,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381570944] [2024-11-09 04:52:58,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:52:58,238 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:52:58,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:52:58,240 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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 04:52:58,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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 (9)] Waiting until timeout for monitored process [2024-11-09 04:52:58,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:52:58,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-09 04:52:58,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:52:58,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2024-11-09 04:52:58,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2024-11-09 04:52:58,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2024-11-09 04:52:58,510 INFO L349 Elim1Store]: treesize reduction 22, result has 43.6 percent of original size [2024-11-09 04:52:58,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 31 [2024-11-09 04:52:58,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7 [2024-11-09 04:52:58,562 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-09 04:52:58,562 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2024-11-09 04:52:59,134 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:52:59,135 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 86 treesize of output 98 [2024-11-09 04:52:59,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:52:59,777 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:53:00,199 INFO L349 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2024-11-09 04:53:00,200 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 28 treesize of output 23 [2024-11-09 04:53:00,380 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:00,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 31 [2024-11-09 04:53:00,400 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:00,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2024-11-09 04:53:00,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-09 04:53:00,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-09 04:53:00,531 WARN L851 $PredicateComparison]: unable to prove that (and (or (= |c_ULTIMATE.start_main_~head~0#1.offset| (_ bv0 32)) (and (forall ((|v_ULTIMATE.start_main_~head~0#1.base_22| (_ BitVec 32)) (v_arrayElimArr_3 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= |c_ULTIMATE.start_main_~head~0#1.offset| (select v_arrayElimArr_3 (_ bv0 32)))) (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~head~0#1.base_22| v_arrayElimArr_3) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) (forall ((|v_ULTIMATE.start_main_~head~0#1.base_22| (_ BitVec 32)) (v_arrayElimArr_4 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~head~0#1.base_22| v_arrayElimArr_4) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 32)) (not (= (select v_arrayElimArr_4 (_ bv0 32)) |c_ULTIMATE.start_main_~head~0#1.base|)))))) (forall ((|v_ULTIMATE.start_main_~head~0#1.base_22| (_ BitVec 32))) (or (forall ((v_arrayElimArr_3 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= |c_ULTIMATE.start_main_~head~0#1.offset| (select v_arrayElimArr_3 (_ bv0 32)))) (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~head~0#1.base_22| v_arrayElimArr_3) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) (= |c_ULTIMATE.start_main_~head~0#1.base| |v_ULTIMATE.start_main_~head~0#1.base_22|))) (forall ((|v_ULTIMATE.start_main_~head~0#1.base_22| (_ BitVec 32))) (or (forall ((v_arrayElimArr_4 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~head~0#1.base_22| v_arrayElimArr_4) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 32)) (not (= (select v_arrayElimArr_4 (_ bv0 32)) |c_ULTIMATE.start_main_~head~0#1.base|)))) (= |c_ULTIMATE.start_main_~head~0#1.base| |v_ULTIMATE.start_main_~head~0#1.base_22|)))) is different from false [2024-11-09 04:53:00,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:53:00,820 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:53:00,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381570944] [2024-11-09 04:53:00,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [381570944] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:53:00,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2066976351] [2024-11-09 04:53:00,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:53:00,821 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:53:00,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:53:00,824 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:53:00,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-11-09 04:53:01,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:53:01,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 04:53:01,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:53:01,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2024-11-09 04:53:01,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2024-11-09 04:53:01,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-09 04:53:01,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2024-11-09 04:53:01,305 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-09 04:53:01,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-09 04:53:01,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-09 04:53:01,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2024-11-09 04:53:01,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7 [2024-11-09 04:53:01,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:53:01,848 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:53:02,109 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:02,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 31 [2024-11-09 04:53:02,122 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:02,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2024-11-09 04:53:02,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-09 04:53:02,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-09 04:53:02,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:53:02,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2066976351] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:53:02,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726529835] [2024-11-09 04:53:02,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:53:02,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:53:02,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:53:02,498 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:53:02,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 04:53:02,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:53:02,652 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 04:53:02,663 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:53:02,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-09 04:53:02,681 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 22 treesize of output 7 [2024-11-09 04:53:02,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2024-11-09 04:53:02,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2024-11-09 04:53:02,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2024-11-09 04:53:02,893 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-09 04:53:02,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-09 04:53:02,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 19 [2024-11-09 04:53:02,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 19 [2024-11-09 04:53:03,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:53:03,410 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:53:03,515 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:03,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 31 [2024-11-09 04:53:03,527 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:03,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2024-11-09 04:53:03,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-09 04:53:03,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-09 04:53:05,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:53:05,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726529835] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:53:05,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 04:53:05,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 7, 7, 7, 7] total 30 [2024-11-09 04:53:05,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329433223] [2024-11-09 04:53:05,120 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 04:53:05,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-09 04:53:05,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:53:05,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-09 04:53:05,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=708, Unknown=1, NotChecked=54, Total=870 [2024-11-09 04:53:05,126 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand has 30 states, 30 states have (on average 2.5) internal successors, (75), 30 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:53:08,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:53:08,112 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2024-11-09 04:53:08,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 04:53:08,113 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.5) internal successors, (75), 30 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-09 04:53:08,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:53:08,113 INFO L225 Difference]: With dead ends: 60 [2024-11-09 04:53:08,113 INFO L226 Difference]: Without dead ends: 45 [2024-11-09 04:53:08,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=186, Invalid=1007, Unknown=1, NotChecked=66, Total=1260 [2024-11-09 04:53:08,115 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 62 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:53:08,115 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 168 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 202 Invalid, 0 Unknown, 27 Unchecked, 2.2s Time] [2024-11-09 04:53:08,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-09 04:53:08,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2024-11-09 04:53:08,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 43 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:53:08,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2024-11-09 04:53:08,124 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 18 [2024-11-09 04:53:08,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:53:08,125 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2024-11-09 04:53:08,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.5) internal successors, (75), 30 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:53:08,125 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2024-11-09 04:53:08,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 04:53:08,126 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:53:08,127 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:53:08,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-09 04:53:08,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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 (9)] Ended with exit code 0 [2024-11-09 04:53:08,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2024-11-09 04:53:08,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 04:53:08,731 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:53:08,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:53:08,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1714040648, now seen corresponding path program 1 times [2024-11-09 04:53:08,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:53:08,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1421225242] [2024-11-09 04:53:08,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:53:08,732 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 04:53:08,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:53:08,733 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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 04:53:08,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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 04:53:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:53:08,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 04:53:08,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:53:08,922 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 20 treesize of output 9 [2024-11-09 04:53:09,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:53:09,012 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:53:09,013 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:53:09,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1421225242] [2024-11-09 04:53:09,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1421225242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:53:09,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:53:09,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-09 04:53:09,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458355842] [2024-11-09 04:53:09,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:53:09,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 04:53:09,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:53:09,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 04:53:09,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-09 04:53:09,014 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:53:09,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:53:09,591 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2024-11-09 04:53:09,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 04:53:09,592 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-09 04:53:09,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:53:09,592 INFO L225 Difference]: With dead ends: 62 [2024-11-09 04:53:09,592 INFO L226 Difference]: Without dead ends: 45 [2024-11-09 04:53:09,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-09 04:53:09,593 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 21 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-09 04:53:09,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 60 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-09 04:53:09,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-09 04:53:09,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 33. [2024-11-09 04:53:09,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.21875) internal successors, (39), 32 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:53:09,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2024-11-09 04:53:09,607 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 19 [2024-11-09 04:53:09,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:53:09,607 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2024-11-09 04:53:09,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:53:09,607 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2024-11-09 04:53:09,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-09 04:53:09,608 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:53:09,608 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:53:09,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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)] Forceful destruction successful, exit code 0 [2024-11-09 04:53:09,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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 04:53:09,809 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:53:09,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:53:09,809 INFO L85 PathProgramCache]: Analyzing trace with hash 164052874, now seen corresponding path program 1 times [2024-11-09 04:53:09,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:53:09,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001231172] [2024-11-09 04:53:09,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:53:09,809 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 04:53:09,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:53:09,811 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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 04:53:09,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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 04:53:09,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:53:09,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-09 04:53:09,951 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:53:09,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-09 04:53:10,072 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-09 04:53:10,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-09 04:53:10,132 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-09 04:53:10,133 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 71 [2024-11-09 04:53:10,192 INFO L349 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2024-11-09 04:53:10,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 27 treesize of output 35 [2024-11-09 04:53:10,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2024-11-09 04:53:10,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-09 04:53:10,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2024-11-09 04:53:10,507 INFO L349 Elim1Store]: treesize reduction 22, result has 43.6 percent of original size [2024-11-09 04:53:10,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 31 [2024-11-09 04:53:10,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7 [2024-11-09 04:53:10,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:53:10,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 38 [2024-11-09 04:53:10,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:53:10,594 INFO L349 Elim1Store]: treesize reduction 6, result has 66.7 percent of original size [2024-11-09 04:53:10,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 26 [2024-11-09 04:53:10,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19 [2024-11-09 04:53:11,638 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 04:53:11,639 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 33 [2024-11-09 04:53:11,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:53:11,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 04:53:11,846 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:53:11,846 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:53:12,792 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:12,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 37 [2024-11-09 04:53:12,815 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:12,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 34 [2024-11-09 04:53:12,896 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_472 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~head~0#1.base_31| (_ BitVec 32)) (v_arrayElimArr_15 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_16 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_int| |v_ULTIMATE.start_main_~head~0#1.base_31| v_ArrVal_472))) (or (not (= |c_ULTIMATE.start_main_~head~0#1.offset| (select v_arrayElimArr_16 (_ bv0 32)))) (not (= (_ bv1 32) (select (select .cse0 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~head~0#1.base_31| v_arrayElimArr_15) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~head~0#1.base_31| v_arrayElimArr_16) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) (= (_ bv1 32) (select (select .cse0 |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd |c_ULTIMATE.start_main_~head~0#1.offset| (_ bv4 32)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~head~0#1.base_31|))) (not (= |c_ULTIMATE.start_main_~head~0#1.base| (select v_arrayElimArr_15 (_ bv0 32)))) (not (= (_ bv1 32) (select v_ArrVal_472 (_ bv4 32))))))) is different from false [2024-11-09 04:53:13,131 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:13,132 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 61 [2024-11-09 04:53:13,245 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:13,246 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 609 treesize of output 468 [2024-11-09 04:53:13,280 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:13,281 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 204 treesize of output 181 [2024-11-09 04:53:13,407 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:13,407 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 1215 treesize of output 1190 [2024-11-09 04:53:13,469 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:13,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 162 treesize of output 123 [2024-11-09 04:53:14,232 INFO L349 Elim1Store]: treesize reduction 11, result has 92.3 percent of original size [2024-11-09 04:53:14,232 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 206 treesize of output 291 [2024-11-09 04:53:14,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 201 treesize of output 191 [2024-11-09 04:53:14,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 179 [2024-11-09 04:53:14,897 INFO L349 Elim1Store]: treesize reduction 8, result has 91.0 percent of original size [2024-11-09 04:53:14,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 148 treesize of output 202 [2024-11-09 04:53:15,000 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:15,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 177 treesize of output 167 [2024-11-09 04:53:15,104 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:15,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 89 [2024-11-09 04:53:49,997 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-09 04:53:49,997 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:53:49,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001231172] [2024-11-09 04:53:49,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2001231172] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:53:49,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [835556511] [2024-11-09 04:53:49,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:53:49,997 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:53:49,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:53:50,001 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:53:50,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2024-11-09 04:53:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:53:50,226 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-09 04:53:50,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:53:50,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-09 04:53:50,292 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-09 04:53:50,301 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-09 04:53:50,333 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-09 04:53:50,333 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 71 [2024-11-09 04:53:50,371 INFO L349 Elim1Store]: treesize reduction 30, result has 34.8 percent of original size [2024-11-09 04:53:50,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 27 treesize of output 35 [2024-11-09 04:53:50,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-09 04:53:50,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 11 [2024-11-09 04:53:50,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2024-11-09 04:53:50,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:53:50,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 38 [2024-11-09 04:53:50,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:53:50,579 INFO L349 Elim1Store]: treesize reduction 6, result has 66.7 percent of original size [2024-11-09 04:53:50,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 26 [2024-11-09 04:53:50,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 26 [2024-11-09 04:53:50,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:53:50,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2024-11-09 04:53:50,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7 [2024-11-09 04:53:51,092 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 04:53:51,093 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 33 [2024-11-09 04:53:51,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:53:51,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 04:53:51,212 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:53:51,212 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:53:51,462 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:51,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 45 [2024-11-09 04:53:51,486 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:51,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 42 [2024-11-09 04:53:51,540 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_529 (_ BitVec 32)) (|v_ULTIMATE.start_main_~head~0#1.base_34| (_ BitVec 32)) (v_arrayElimArr_23 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_24 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_int| |v_ULTIMATE.start_main_~head~0#1.base_34| (store (store (select |c_#memory_int| |v_ULTIMATE.start_main_~head~0#1.base_34|) (_ bv4 32) (_ bv1 32)) (_ bv0 32) v_ArrVal_529)))) (or (not (= |c_ULTIMATE.start_main_~head~0#1.base| (select v_arrayElimArr_23 (_ bv0 32)))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~head~0#1.base_34|) (_ bv0 1))) (not (= (_ bv1 32) (select (select .cse0 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~head~0#1.base_34| v_arrayElimArr_23) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~head~0#1.base_34| v_arrayElimArr_24) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) (= (_ bv1 32) (select (select .cse0 |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd |c_ULTIMATE.start_main_~head~0#1.offset| (_ bv4 32)))) (not (= |c_ULTIMATE.start_main_~head~0#1.offset| (select v_arrayElimArr_24 (_ bv0 32))))))) is different from false [2024-11-09 04:53:51,728 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:51,729 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 64 [2024-11-09 04:53:51,807 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:51,807 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 654 treesize of output 509 [2024-11-09 04:53:51,839 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:51,839 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 216 treesize of output 193 [2024-11-09 04:53:51,846 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:53:51,905 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:53:52,317 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:52,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 1302 treesize of output 1360 [2024-11-09 04:53:52,465 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:52,466 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 3043 treesize of output 2922 [2024-11-09 04:53:52,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 386 treesize of output 378 [2024-11-09 04:53:52,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 431 treesize of output 409 [2024-11-09 04:53:52,838 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:52,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 397 treesize of output 387 [2024-11-09 04:53:52,976 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:53:52,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 431 treesize of output 403 [2024-11-09 04:53:54,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-09 04:54:00,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-09 04:54:08,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-09 04:54:08,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-09 04:54:09,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-09 04:54:09,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-09 04:54:09,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-09 04:54:09,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-09 04:54:10,383 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 04:54:10,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 15 [2024-11-09 04:54:10,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-09 04:54:24,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-09 04:54:28,063 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:54:28,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 211 treesize of output 211 [2024-11-09 04:54:31,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-09 04:55:00,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-09 04:55:06,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2024-11-09 04:55:06,632 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:55:06,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:06,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2024-11-09 04:55:06,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:06,878 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:55:06,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:06,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:06,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:06,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:07,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:07,078 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:55:07,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:07,170 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:55:07,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:07,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:07,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:07,334 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:55:07,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:07,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:07,411 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:55:07,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:07,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:07,537 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:55:07,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:07,568 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:55:07,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:07,601 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:55:07,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:07,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:07,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:08,325 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 04:55:08,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 133 [2024-11-09 04:55:10,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2024-11-09 04:55:10,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:12,043 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:55:12,081 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:12,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 32 [2024-11-09 04:55:12,147 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:55:12,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:12,316 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:55:12,354 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:12,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 32 [2024-11-09 04:55:12,445 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 04:55:12,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 1 [2024-11-09 04:55:13,351 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:55:13,418 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-09 04:55:13,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 581 treesize of output 1 [2024-11-09 04:55:13,459 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:55:13,487 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 04:55:13,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 190 treesize of output 1 [2024-11-09 04:55:13,709 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 04:55:13,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 164 treesize of output 1 [2024-11-09 04:55:15,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:15,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:15,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:15,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:15,661 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:55:15,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-09 04:55:15,708 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:55:15,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-09 04:55:16,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:16,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:16,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:16,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:16,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:16,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:17,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:17,049 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:55:17,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-09 04:55:17,123 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:55:17,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-11-09 04:55:17,277 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:55:17,328 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:17,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 100 [2024-11-09 04:55:17,446 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:55:17,527 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:17,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 92 [2024-11-09 04:55:17,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:17,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:35,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-09 04:55:35,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-09 04:55:35,769 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 04:55:35,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 11 [2024-11-09 04:55:35,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-09 04:55:35,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:35,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2024-11-09 04:55:37,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2024-11-09 04:55:37,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:37,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:37,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2024-11-09 04:55:37,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:37,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:37,594 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:37,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 50 [2024-11-09 04:55:37,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:37,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:37,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:37,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:37,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:38,113 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-09 04:55:38,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 215 treesize of output 1 [2024-11-09 04:55:38,176 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-11-09 04:55:38,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 122 treesize of output 1 [2024-11-09 04:55:38,242 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 04:55:38,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 1 [2024-11-09 04:55:38,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:38,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:38,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:38,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:38,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:39,322 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 04:55:39,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 133 [2024-11-09 04:55:39,521 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-11-09 04:55:39,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 289 treesize of output 1 [2024-11-09 04:55:39,573 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:55:39,633 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-09 04:55:39,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 65 [2024-11-09 04:55:41,097 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:55:41,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:41,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2024-11-09 04:55:41,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:41,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:41,312 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:55:41,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:41,356 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:55:41,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:41,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:45,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 226 treesize of output 210 [2024-11-09 04:55:48,340 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-09 04:55:48,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [835556511] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:55:48,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116249012] [2024-11-09 04:55:48,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:55:48,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:55:48,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:55:48,342 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:55:48,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 04:55:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:55:48,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-09 04:55:48,471 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:55:48,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-09 04:55:48,502 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 11 treesize of output 7 [2024-11-09 04:55:48,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-09 04:55:48,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 18 [2024-11-09 04:55:48,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-09 04:55:48,746 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-09 04:55:48,747 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 62 [2024-11-09 04:55:48,759 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 27 treesize of output 27 [2024-11-09 04:55:48,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 11 [2024-11-09 04:55:49,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2024-11-09 04:55:49,121 INFO L349 Elim1Store]: treesize reduction 22, result has 43.6 percent of original size [2024-11-09 04:55:49,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 31 [2024-11-09 04:55:49,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7 [2024-11-09 04:55:49,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:49,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 38 [2024-11-09 04:55:49,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:49,191 INFO L349 Elim1Store]: treesize reduction 6, result has 66.7 percent of original size [2024-11-09 04:55:49,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 26 [2024-11-09 04:55:49,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:49,219 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 33 [2024-11-09 04:55:50,737 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 04:55:50,738 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 32 [2024-11-09 04:55:50,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:50,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 04:55:50,951 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:55:50,951 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:55:51,131 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:51,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 37 [2024-11-09 04:55:51,155 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:51,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 34 [2024-11-09 04:55:51,230 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_597 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_30 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_31 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~head~0#1.base_37| (_ BitVec 32))) (let ((.cse0 (store |c_#memory_int| |v_ULTIMATE.start_main_~head~0#1.base_37| v_ArrVal_597))) (or (= (_ bv1 32) (select (select .cse0 |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd |c_ULTIMATE.start_main_~head~0#1.offset| (_ bv4 32)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~head~0#1.base_37|))) (not (= |c_ULTIMATE.start_main_~head~0#1.offset| (select v_arrayElimArr_31 (_ bv0 32)))) (not (= (select (select .cse0 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~head~0#1.base_37| v_arrayElimArr_30) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~head~0#1.base_37| v_arrayElimArr_31) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (_ bv1 32))) (not (= (_ bv1 32) (select v_ArrVal_597 (_ bv4 32)))) (not (= |c_ULTIMATE.start_main_~head~0#1.base| (select v_arrayElimArr_30 (_ bv0 32))))))) is different from false [2024-11-09 04:55:51,472 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:51,473 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 77 [2024-11-09 04:55:51,711 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:51,712 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 753 treesize of output 612 [2024-11-09 04:55:51,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 268 treesize of output 266 [2024-11-09 04:55:51,765 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:51,765 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 266 treesize of output 243 [2024-11-09 04:55:51,899 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:51,899 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 1711 treesize of output 1686 [2024-11-09 04:55:51,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 200 treesize of output 198 [2024-11-09 04:55:52,001 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:52,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 205 treesize of output 207 [2024-11-09 04:55:52,081 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:55:52,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 201 treesize of output 203 [2024-11-09 04:55:56,716 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-09 04:55:56,739 INFO L349 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2024-11-09 04:55:56,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 15 [2024-11-09 04:55:56,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:55:56,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 1 [2024-11-09 04:56:08,233 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-09 04:56:08,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116249012] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:56:08,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 04:56:08,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11, 11, 12, 13] total 38 [2024-11-09 04:56:08,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320391524] [2024-11-09 04:56:08,233 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 04:56:08,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-09 04:56:08,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:56:08,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-09 04:56:08,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1019, Unknown=7, NotChecked=204, Total=1406 [2024-11-09 04:56:08,236 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 38 states, 38 states have (on average 1.9473684210526316) internal successors, (74), 38 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:56:10,797 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 [1] [2024-11-09 04:56:16,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:56:19,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:56:21,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-09 04:56:28,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:56:28,391 INFO L93 Difference]: Finished difference Result 83 states and 96 transitions. [2024-11-09 04:56:28,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 04:56:28,392 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.9473684210526316) internal successors, (74), 38 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-09 04:56:28,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:56:28,392 INFO L225 Difference]: With dead ends: 83 [2024-11-09 04:56:28,392 INFO L226 Difference]: Without dead ends: 81 [2024-11-09 04:56:28,394 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 75 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=364, Invalid=1803, Unknown=7, NotChecked=276, Total=2450 [2024-11-09 04:56:28,395 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 149 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 210 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2024-11-09 04:56:28,395 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 275 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 400 Invalid, 1 Unknown, 210 Unchecked, 15.9s Time] [2024-11-09 04:56:28,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-09 04:56:28,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 45. [2024-11-09 04:56:28,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 44 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:56:28,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2024-11-09 04:56:28,409 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 20 [2024-11-09 04:56:28,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:56:28,410 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2024-11-09 04:56:28,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.9473684210526316) internal successors, (74), 38 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:56:28,410 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2024-11-09 04:56:28,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 04:56:28,411 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:56:28,411 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:56:28,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2024-11-09 04:56:28,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-09 04:56:28,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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 04:56:29,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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 04:56:29,012 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:56:29,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:56:29,013 INFO L85 PathProgramCache]: Analyzing trace with hash -299722421, now seen corresponding path program 1 times [2024-11-09 04:56:29,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:56:29,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1198930288] [2024-11-09 04:56:29,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:56:29,013 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 04:56:29,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:56:29,015 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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 04:56:29,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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 (16)] Waiting until timeout for monitored process [2024-11-09 04:56:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:56:29,211 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 04:56:29,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:56:29,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-09 04:56:29,255 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 11 treesize of output 7 [2024-11-09 04:56:29,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 18 [2024-11-09 04:56:29,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-09 04:56:29,390 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-09 04:56:29,390 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2024-11-09 04:56:29,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-09 04:56:29,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 11 [2024-11-09 04:56:29,668 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 16 treesize of output 8 [2024-11-09 04:56:29,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-09 04:56:29,880 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:56:29,880 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:56:30,033 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_657 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_657) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd |c_ULTIMATE.start_main_~head~0#1.offset| (_ bv4 32))) (_ bv1 32)))) is different from false [2024-11-09 04:56:30,064 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_657 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_657) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd |c_ULTIMATE.start_main_~head~0#1.offset| (_ bv4 32))) (_ bv1 32)))) is different from false [2024-11-09 04:56:30,096 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_657 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (_ bv1 32) (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) v_ArrVal_657) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd |c_ULTIMATE.start_main_~head~0#1.offset| (_ bv4 32)))))) is different from false [2024-11-09 04:56:30,152 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:56:30,153 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2024-11-09 04:56:30,200 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:56:30,200 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 81 treesize of output 68 [2024-11-09 04:56:30,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 48 [2024-11-09 04:56:30,976 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-09 04:56:30,976 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:56:30,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1198930288] [2024-11-09 04:56:30,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1198930288] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:56:30,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [3270296] [2024-11-09 04:56:30,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:56:30,977 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:56:30,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:56:30,978 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:56:30,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2024-11-09 04:56:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:56:31,227 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 04:56:31,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:56:31,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-09 04:56:31,279 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 11 treesize of output 7 [2024-11-09 04:56:31,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2024-11-09 04:56:31,368 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-09 04:56:31,408 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-09 04:56:31,408 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39 [2024-11-09 04:56:31,459 INFO L349 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2024-11-09 04:56:31,459 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 1 case distinctions, treesize of input 24 treesize of output 19 [2024-11-09 04:56:31,504 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2024-11-09 04:56:31,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-09 04:56:31,686 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 16 treesize of output 8 [2024-11-09 04:56:31,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-09 04:56:31,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:56:31,769 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:56:31,798 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_716 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (_ bv1 32) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_716) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd |c_ULTIMATE.start_main_~head~0#1.offset| (_ bv4 32)))))) is different from false [2024-11-09 04:56:31,828 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_716 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_716) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd |c_ULTIMATE.start_main_~head~0#1.offset| (_ bv4 32))) (_ bv1 32)))) is different from false [2024-11-09 04:56:31,857 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_716 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (_ bv1 32) (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) v_ArrVal_716) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd |c_ULTIMATE.start_main_~head~0#1.offset| (_ bv4 32)))))) is different from false [2024-11-09 04:56:31,898 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:56:31,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 40 [2024-11-09 04:56:31,938 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:56:31,939 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 91 treesize of output 78 [2024-11-09 04:56:31,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 58 [2024-11-09 04:56:32,483 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-09 04:56:32,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [3270296] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:56:32,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256321109] [2024-11-09 04:56:32,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:56:32,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:56:32,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:56:32,486 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:56:32,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 04:56:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:56:32,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-09 04:56:32,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:56:32,632 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 11 treesize of output 7 [2024-11-09 04:56:32,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-09 04:56:32,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 18 [2024-11-09 04:56:32,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-09 04:56:32,801 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-09 04:56:32,801 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2024-11-09 04:56:32,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-09 04:56:32,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 11 [2024-11-09 04:56:33,007 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 16 treesize of output 8 [2024-11-09 04:56:33,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-09 04:56:33,083 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:56:33,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:56:33,223 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_774 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (_ bv1 32) (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_774) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd |c_ULTIMATE.start_main_~head~0#1.offset| (_ bv4 32)))))) is different from false [2024-11-09 04:56:33,253 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_774 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (_ bv1 32) (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) v_ArrVal_774) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd |c_ULTIMATE.start_main_~head~0#1.offset| (_ bv4 32)))))) is different from false [2024-11-09 04:56:33,299 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:56:33,299 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2024-11-09 04:56:33,343 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:56:33,344 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 81 treesize of output 68 [2024-11-09 04:56:33,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 48 [2024-11-09 04:56:34,186 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-09 04:56:34,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256321109] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:56:34,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 04:56:34,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 24 [2024-11-09 04:56:34,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851621317] [2024-11-09 04:56:34,187 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 04:56:34,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 04:56:34,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:56:34,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 04:56:34,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=188, Unknown=19, NotChecked=280, Total=552 [2024-11-09 04:56:34,189 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 24 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:56:38,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:56:38,167 INFO L93 Difference]: Finished difference Result 71 states and 84 transitions. [2024-11-09 04:56:38,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 04:56:38,168 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 24 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-09 04:56:38,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:56:38,169 INFO L225 Difference]: With dead ends: 71 [2024-11-09 04:56:38,169 INFO L226 Difference]: Without dead ends: 64 [2024-11-09 04:56:38,170 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=115, Invalid=318, Unknown=19, NotChecked=360, Total=812 [2024-11-09 04:56:38,171 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 42 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 426 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-09 04:56:38,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 212 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 235 Invalid, 0 Unknown, 426 Unchecked, 3.5s Time] [2024-11-09 04:56:38,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-09 04:56:38,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2024-11-09 04:56:38,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 51 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:56:38,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2024-11-09 04:56:38,186 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 22 [2024-11-09 04:56:38,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:56:38,187 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2024-11-09 04:56:38,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 24 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 04:56:38,187 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2024-11-09 04:56:38,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-09 04:56:38,188 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:56:38,188 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:56:38,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2024-11-09 04:56:38,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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 (16)] Forceful destruction successful, exit code 0 [2024-11-09 04:56:38,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-09 04:56:38,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:56:38,789 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:56:38,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:56:38,790 INFO L85 PathProgramCache]: Analyzing trace with hash 156910671, now seen corresponding path program 2 times [2024-11-09 04:56:38,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:56:38,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115546843] [2024-11-09 04:56:38,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 04:56:38,790 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 04:56:38,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:56:38,793 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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 04:56:38,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af4553ec-b488-4a41-8567-a994af80bbe6/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)] Waiting until timeout for monitored process [2024-11-09 04:56:38,996 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 04:56:38,996 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 04:56:39,002 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-09 04:56:39,006 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:56:39,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-09 04:56:39,119 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-09 04:56:39,168 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-09 04:56:39,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-09 04:56:39,244 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-09 04:56:39,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-09 04:56:39,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2024-11-09 04:56:39,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-09 04:56:39,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2024-11-09 04:56:39,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:56:39,555 INFO L349 Elim1Store]: treesize reduction 44, result has 10.2 percent of original size [2024-11-09 04:56:39,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 108 treesize of output 79 [2024-11-09 04:56:39,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:56:39,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 11 [2024-11-09 04:56:39,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 15 [2024-11-09 04:56:39,674 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-09 04:56:39,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 36 [2024-11-09 04:56:39,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-09 04:56:39,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2024-11-09 04:56:39,968 INFO L349 Elim1Store]: treesize reduction 22, result has 43.6 percent of original size [2024-11-09 04:56:39,969 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 1 case distinctions, treesize of input 21 treesize of output 31 [2024-11-09 04:56:39,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7 [2024-11-09 04:56:40,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:56:40,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 38 [2024-11-09 04:56:40,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:56:40,047 INFO L349 Elim1Store]: treesize reduction 6, result has 66.7 percent of original size [2024-11-09 04:56:40,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 26 [2024-11-09 04:56:40,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 19 [2024-11-09 04:56:41,167 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-09 04:56:41,167 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 33 [2024-11-09 04:56:41,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-09 04:56:41,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 04:56:41,426 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:56:41,426 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:56:42,399 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:56:42,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 37 [2024-11-09 04:56:42,417 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:56:42,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 34 [2024-11-09 04:56:42,484 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_863 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~head~0#1.base_43| (_ BitVec 32)) (v_arrayElimArr_44 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_45 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_int| |v_ULTIMATE.start_main_~head~0#1.base_43| v_ArrVal_863))) (or (not (= (_ bv1 32) (select v_ArrVal_863 (_ bv4 32)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~head~0#1.base_43|))) (= (_ bv1 32) (select (select .cse0 |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd |c_ULTIMATE.start_main_~head~0#1.offset| (_ bv4 32)))) (not (= |c_ULTIMATE.start_main_~head~0#1.offset| (select v_arrayElimArr_45 (_ bv0 32)))) (not (= |c_ULTIMATE.start_main_~head~0#1.base| (select v_arrayElimArr_44 (_ bv0 32)))) (not (= (_ bv1 32) (select (select .cse0 (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~head~0#1.base_43| v_arrayElimArr_44) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (bvadd (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~head~0#1.base_43| v_arrayElimArr_45) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv4 32)))))))) is different from false [2024-11-09 04:56:42,922 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1.base_154| (_ BitVec 32)) (v_ArrVal_858 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_853 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_855 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_856 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_850 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_851 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_863 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~head~0#1.base_43| (_ BitVec 32)) (v_ArrVal_854 (_ BitVec 1)) (v_arrayElimArr_44 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_45 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_853) |v_ULTIMATE.start_main_~x~0#1.base_154| v_ArrVal_856) |v_ULTIMATE.start_main_~head~0#1.base_43| v_ArrVal_863))) (or (not (= (_ bv1 32) (select v_ArrVal_863 (_ bv4 32)))) (not (= (_ bv1 32) (select (select .cse0 (select (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_855) |v_ULTIMATE.start_main_~x~0#1.base_154| v_ArrVal_851) |v_ULTIMATE.start_main_~head~0#1.base_43| v_arrayElimArr_44) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (bvadd (_ bv4 32) (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_858) |v_ULTIMATE.start_main_~x~0#1.base_154| v_ArrVal_850) |v_ULTIMATE.start_main_~head~0#1.base_43| v_arrayElimArr_45) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) (not (= v_ArrVal_853 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| (select v_ArrVal_853 |c_ULTIMATE.start_main_~x~0#1.offset|)))) (= (_ bv1 32) (select (select .cse0 |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd |c_ULTIMATE.start_main_~head~0#1.offset| (_ bv4 32)))) (not (= |c_ULTIMATE.start_main_~head~0#1.offset| (select v_arrayElimArr_45 (_ bv0 32)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_154|))) (not (= (_ bv0 1) (select (store |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_154| v_ArrVal_854) |v_ULTIMATE.start_main_~head~0#1.base_43|))) (not (= |c_ULTIMATE.start_main_~head~0#1.base| (select v_arrayElimArr_44 (_ bv0 32))))))) is different from false [2024-11-09 04:56:43,141 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:56:43,141 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 62 [2024-11-09 04:56:43,313 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:56:43,314 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 1050 treesize of output 889 [2024-11-09 04:56:43,362 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:56:43,363 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 404 treesize of output 349 [2024-11-09 04:56:43,561 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:56:43,562 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 4223 treesize of output 4166 [2024-11-09 04:56:44,802 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:56:44,803 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 15430 treesize of output 15266 [2024-11-09 04:56:44,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1505 treesize of output 1467 [2024-11-09 04:56:45,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1422 treesize of output 1406 [2024-11-09 04:56:45,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1406 treesize of output 1374 [2024-11-09 04:56:45,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1427 treesize of output 1361 [2024-11-09 04:56:47,456 INFO L349 Elim1Store]: treesize reduction 8, result has 93.9 percent of original size [2024-11-09 04:56:47,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1450 treesize of output 1394 [2024-11-09 04:56:48,028 INFO L224 Elim1Store]: Index analysis took 108 ms [2024-11-09 04:56:48,560 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:56:48,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1322 treesize of output 1322 [2024-11-09 04:56:48,714 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:56:48,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1223 treesize of output 1195 [2024-11-09 04:56:48,988 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 04:56:48,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1167 treesize of output 1051