./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-manipulation/tree-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9353777f-f56e-4f12-a3c2-79599d44f623/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9353777f-f56e-4f12-a3c2-79599d44f623/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9353777f-f56e-4f12-a3c2-79599d44f623/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9353777f-f56e-4f12-a3c2-79599d44f623/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-manipulation/tree-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9353777f-f56e-4f12-a3c2-79599d44f623/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9353777f-f56e-4f12-a3c2-79599d44f623/bin/utaipan-verify-mE87zJ7Ire --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 3ab0e6b3adccdafccbf4f7749fddf566a909e7e6b26ed4ad49012db1c4c97a10 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:30:45,886 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:30:46,012 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9353777f-f56e-4f12-a3c2-79599d44f623/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:30:46,021 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:30:46,022 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:30:46,062 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:30:46,063 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:30:46,063 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:30:46,064 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:30:46,069 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:30:46,070 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:30:46,071 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:30:46,071 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:30:46,073 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:30:46,073 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:30:46,074 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:30:46,074 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:30:46,075 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:30:46,075 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:30:46,076 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:30:46,076 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:30:46,077 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:30:46,078 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:30:46,078 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:30:46,079 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:30:46,079 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:30:46,080 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:30:46,080 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:30:46,091 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:30:46,091 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:30:46,092 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:30:46,093 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:30:46,093 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:30:46,093 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:30:46,094 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:30:46,094 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:30:46,094 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:30:46,094 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:30:46,095 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:30:46,095 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:30:46,095 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:30:46,096 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:30:46,096 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:30:46,096 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:30:46,097 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:30:46,097 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:30:46,097 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:30:46,097 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_9353777f-f56e-4f12-a3c2-79599d44f623/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9353777f-f56e-4f12-a3c2-79599d44f623/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ab0e6b3adccdafccbf4f7749fddf566a909e7e6b26ed4ad49012db1c4c97a10 [2023-11-23 21:30:46,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:30:46,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:30:46,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:30:46,445 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:30:46,446 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:30:46,447 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9353777f-f56e-4f12-a3c2-79599d44f623/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/heap-manipulation/tree-3.i [2023-11-23 21:30:49,509 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:30:49,913 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:30:49,917 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9353777f-f56e-4f12-a3c2-79599d44f623/sv-benchmarks/c/heap-manipulation/tree-3.i [2023-11-23 21:30:49,937 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9353777f-f56e-4f12-a3c2-79599d44f623/bin/utaipan-verify-mE87zJ7Ire/data/b7aef2c9a/572d144f456a436ca79ef60dd983f1bb/FLAGcd2cfd5d6 [2023-11-23 21:30:49,953 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9353777f-f56e-4f12-a3c2-79599d44f623/bin/utaipan-verify-mE87zJ7Ire/data/b7aef2c9a/572d144f456a436ca79ef60dd983f1bb [2023-11-23 21:30:49,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:30:49,961 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:30:49,964 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:30:49,965 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:30:49,974 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:30:49,975 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:30:49" (1/1) ... [2023-11-23 21:30:49,976 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f9fb60a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:49, skipping insertion in model container [2023-11-23 21:30:49,976 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:30:49" (1/1) ... [2023-11-23 21:30:50,028 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:30:50,392 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9353777f-f56e-4f12-a3c2-79599d44f623/sv-benchmarks/c/heap-manipulation/tree-3.i[22626,22639] [2023-11-23 21:30:50,433 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:30:50,446 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:30:50,497 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9353777f-f56e-4f12-a3c2-79599d44f623/sv-benchmarks/c/heap-manipulation/tree-3.i[22626,22639] [2023-11-23 21:30:50,522 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:30:50,560 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:30:50,561 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:50 WrapperNode [2023-11-23 21:30:50,561 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:30:50,562 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:30:50,562 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:30:50,563 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:30:50,570 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:50" (1/1) ... [2023-11-23 21:30:50,606 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:50" (1/1) ... [2023-11-23 21:30:50,632 INFO L138 Inliner]: procedures = 122, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 150 [2023-11-23 21:30:50,633 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:30:50,633 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:30:50,634 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:30:50,634 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:30:50,643 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:50" (1/1) ... [2023-11-23 21:30:50,644 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:50" (1/1) ... [2023-11-23 21:30:50,647 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:50" (1/1) ... [2023-11-23 21:30:50,648 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:50" (1/1) ... [2023-11-23 21:30:50,658 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:50" (1/1) ... [2023-11-23 21:30:50,663 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:50" (1/1) ... [2023-11-23 21:30:50,666 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:50" (1/1) ... [2023-11-23 21:30:50,668 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:50" (1/1) ... [2023-11-23 21:30:50,671 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:30:50,672 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:30:50,673 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:30:50,673 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:30:50,674 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:50" (1/1) ... [2023-11-23 21:30:50,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:30:50,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9353777f-f56e-4f12-a3c2-79599d44f623/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:30:50,708 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9353777f-f56e-4f12-a3c2-79599d44f623/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:30:50,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9353777f-f56e-4f12-a3c2-79599d44f623/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:30:50,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:30:50,765 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2023-11-23 21:30:50,765 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2023-11-23 21:30:50,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:30:50,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:30:50,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:30:50,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:30:50,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 21:30:50,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:30:50,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:30:50,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:30:50,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:30:50,902 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:30:50,905 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:30:51,252 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:30:51,410 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:30:51,410 INFO L309 CfgBuilder]: Removed 11 assume(true) statements. [2023-11-23 21:30:51,411 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:30:51 BoogieIcfgContainer [2023-11-23 21:30:51,412 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:30:51,414 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:30:51,414 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:30:51,417 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:30:51,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:30:49" (1/3) ... [2023-11-23 21:30:51,418 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77876921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:30:51, skipping insertion in model container [2023-11-23 21:30:51,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:30:50" (2/3) ... [2023-11-23 21:30:51,419 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77876921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:30:51, skipping insertion in model container [2023-11-23 21:30:51,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:30:51" (3/3) ... [2023-11-23 21:30:51,420 INFO L112 eAbstractionObserver]: Analyzing ICFG tree-3.i [2023-11-23 21:30:51,442 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:30:51,442 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:30:51,496 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:30:51,503 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5a61a7f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:30:51,504 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:30:51,508 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 26 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:30:51,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 21:30:51,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:51,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:51,516 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:30:51,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:51,521 INFO L85 PathProgramCache]: Analyzing trace with hash -2003008705, now seen corresponding path program 1 times [2023-11-23 21:30:51,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:51,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940953215] [2023-11-23 21:30:51,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:51,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:30:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:51,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:30:51,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:30:51,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940953215] [2023-11-23 21:30:51,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940953215] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:51,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:30:51,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:30:51,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834616416] [2023-11-23 21:30:51,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:51,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:30:51,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:30:51,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:30:51,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:30:51,769 INFO L87 Difference]: Start difference. First operand has 28 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 26 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:30:51,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:51,849 INFO L93 Difference]: Finished difference Result 52 states and 89 transitions. [2023-11-23 21:30:51,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:30:51,851 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-23 21:30:51,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:51,858 INFO L225 Difference]: With dead ends: 52 [2023-11-23 21:30:51,859 INFO L226 Difference]: Without dead ends: 22 [2023-11-23 21:30:51,862 INFO L412 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 [2023-11-23 21:30:51,866 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:51,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:30:51,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-11-23 21:30:51,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-11-23 21:30:51,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 20 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:30:51,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2023-11-23 21:30:51,901 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 8 [2023-11-23 21:30:51,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:51,902 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2023-11-23 21:30:51,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:30:51,903 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2023-11-23 21:30:51,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 21:30:51,903 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:51,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:51,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:30:51,904 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:30:51,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:51,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1495242388, now seen corresponding path program 1 times [2023-11-23 21:30:51,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:51,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117755142] [2023-11-23 21:30:51,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:51,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:30:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:52,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:30:52,094 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:30:52,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117755142] [2023-11-23 21:30:52,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117755142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:52,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:30:52,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:30:52,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707648621] [2023-11-23 21:30:52,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:52,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:30:52,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:30:52,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:30:52,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:30:52,098 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:30:52,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:52,252 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2023-11-23 21:30:52,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:30:52,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-23 21:30:52,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:52,254 INFO L225 Difference]: With dead ends: 43 [2023-11-23 21:30:52,254 INFO L226 Difference]: Without dead ends: 24 [2023-11-23 21:30:52,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:30:52,256 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 1 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:52,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 65 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:30:52,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-23 21:30:52,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-23 21:30:52,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.3) internal successors, (26), 22 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:30:52,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2023-11-23 21:30:52,263 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 9 [2023-11-23 21:30:52,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:52,263 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2023-11-23 21:30:52,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:30:52,264 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2023-11-23 21:30:52,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:30:52,264 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:52,264 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:52,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:30:52,265 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:30:52,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:52,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1001040005, now seen corresponding path program 1 times [2023-11-23 21:30:52,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:52,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898658575] [2023-11-23 21:30:52,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:52,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:30:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:52,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:30:52,357 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:30:52,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898658575] [2023-11-23 21:30:52,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898658575] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:52,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:30:52,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:30:52,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176550027] [2023-11-23 21:30:52,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:52,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:30:52,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:30:52,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:30:52,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:30:52,360 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:30:52,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:52,447 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2023-11-23 21:30:52,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:30:52,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-23 21:30:52,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:52,449 INFO L225 Difference]: With dead ends: 42 [2023-11-23 21:30:52,449 INFO L226 Difference]: Without dead ends: 25 [2023-11-23 21:30:52,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:30:52,451 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:52,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:30:52,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-23 21:30:52,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-11-23 21:30:52,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 23 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:30:52,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2023-11-23 21:30:52,458 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 11 [2023-11-23 21:30:52,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:52,458 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2023-11-23 21:30:52,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:30:52,459 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2023-11-23 21:30:52,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 21:30:52,459 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:52,459 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:52,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:30:52,460 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:30:52,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:52,461 INFO L85 PathProgramCache]: Analyzing trace with hash 702136177, now seen corresponding path program 1 times [2023-11-23 21:30:52,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:52,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377099602] [2023-11-23 21:30:52,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:52,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:30:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:52,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:30:52,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:30:52,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377099602] [2023-11-23 21:30:52,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377099602] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:30:52,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198982675] [2023-11-23 21:30:52,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:52,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:52,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9353777f-f56e-4f12-a3c2-79599d44f623/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:30:52,863 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9353777f-f56e-4f12-a3c2-79599d44f623/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:30:52,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9353777f-f56e-4f12-a3c2-79599d44f623/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:30:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:53,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-23 21:30:53,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:53,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:30:53,112 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:30:53,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198982675] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:30:53,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:30:53,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 6 [2023-11-23 21:30:53,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403349928] [2023-11-23 21:30:53,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:30:53,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:30:53,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:30:53,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:30:53,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:30:53,115 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:30:53,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:30:53,298 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2023-11-23 21:30:53,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:30:53,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-23 21:30:53,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:30:53,300 INFO L225 Difference]: With dead ends: 38 [2023-11-23 21:30:53,302 INFO L226 Difference]: Without dead ends: 35 [2023-11-23 21:30:53,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:30:53,304 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 40 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:30:53,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 48 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:30:53,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-11-23 21:30:53,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 24. [2023-11-23 21:30:53,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:30:53,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2023-11-23 21:30:53,317 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 12 [2023-11-23 21:30:53,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:30:53,317 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2023-11-23 21:30:53,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:30:53,320 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-11-23 21:30:53,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-23 21:30:53,321 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:30:53,321 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:30:53,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9353777f-f56e-4f12-a3c2-79599d44f623/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:30:53,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9353777f-f56e-4f12-a3c2-79599d44f623/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:53,522 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:30:53,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:30:53,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1994994778, now seen corresponding path program 1 times [2023-11-23 21:30:53,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:30:53,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742047764] [2023-11-23 21:30:53,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:53,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:30:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:56,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:30:56,279 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:30:56,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742047764] [2023-11-23 21:30:56,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742047764] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:30:56,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992639688] [2023-11-23 21:30:56,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:30:56,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:30:56,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9353777f-f56e-4f12-a3c2-79599d44f623/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:30:56,282 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9353777f-f56e-4f12-a3c2-79599d44f623/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:30:56,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9353777f-f56e-4f12-a3c2-79599d44f623/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:30:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:30:56,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-23 21:30:56,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:30:56,508 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 [2023-11-23 21:30:56,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:30:56,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:30:56,819 INFO L349 Elim1Store]: treesize reduction 77, result has 8.3 percent of original size [2023-11-23 21:30:56,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1470 treesize of output 907 [2023-11-23 21:30:56,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:30:56,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:30:56,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 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 217 treesize of output 215 [2023-11-23 21:30:56,894 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2023-11-23 21:30:56,895 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 2 case distinctions, treesize of input 340 treesize of output 277 [2023-11-23 21:30:56,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:30:56,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:30:56,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 93 [2023-11-23 21:30:56,944 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 162 treesize of output 146 [2023-11-23 21:30:56,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:30:56,995 INFO L349 Elim1Store]: treesize reduction 38, result has 25.5 percent of original size [2023-11-23 21:30:56,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 86 [2023-11-23 21:30:57,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:30:57,068 INFO L349 Elim1Store]: treesize reduction 38, result has 25.5 percent of original size [2023-11-23 21:30:57,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 84 [2023-11-23 21:30:57,089 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 216 treesize of output 162 [2023-11-23 21:30:57,125 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-11-23 21:30:57,126 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 [2023-11-23 21:30:57,144 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 [2023-11-23 21:30:57,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:30:57,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:30:57,307 INFO L349 Elim1Store]: treesize reduction 83, result has 1.2 percent of original size [2023-11-23 21:30:57,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1554 treesize of output 919 [2023-11-23 21:30:57,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:30:57,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:30:57,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 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 217 treesize of output 215 [2023-11-23 21:30:57,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:30:57,431 INFO L349 Elim1Store]: treesize reduction 356, result has 0.3 percent of original size [2023-11-23 21:30:57,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 559 treesize of output 543 [2023-11-23 21:30:57,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:30:57,488 INFO L349 Elim1Store]: treesize reduction 218, result has 0.5 percent of original size [2023-11-23 21:30:57,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 473 treesize of output 468 [2023-11-23 21:30:57,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:30:57,537 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:30:57,538 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 76 treesize of output 61 [2023-11-23 21:30:57,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 60 [2023-11-23 21:30:57,559 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-23 21:30:57,607 INFO L349 Elim1Store]: treesize reduction 214, result has 0.5 percent of original size [2023-11-23 21:30:57,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 970 treesize of output 924 [2023-11-23 21:30:57,705 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 559 treesize of output 519 [2023-11-23 21:30:57,748 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 547 treesize of output 503 [2023-11-23 21:30:57,786 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-23 21:30:57,839 INFO L349 Elim1Store]: treesize reduction 450, result has 0.2 percent of original size [2023-11-23 21:30:57,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 1065 treesize of output 1004 [2023-11-23 21:30:57,907 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-23 21:30:57,924 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:30:57,927 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-23 21:30:57,937 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:30:57,944 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2023-11-23 21:30:57,945 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 2 case distinctions, treesize of input 140 treesize of output 119 [2023-11-23 21:30:57,958 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:30:57,962 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-23 21:30:57,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:30:57,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:30:57,989 INFO L349 Elim1Store]: treesize reduction 83, result has 1.2 percent of original size [2023-11-23 21:30:57,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1616 treesize of output 981 [2023-11-23 21:30:58,027 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2023-11-23 21:30:58,027 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 2 case distinctions, treesize of input 404 treesize of output 341 [2023-11-23 21:30:58,036 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:30:58,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:30:58,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:30:58,072 INFO L349 Elim1Store]: treesize reduction 83, result has 1.2 percent of original size [2023-11-23 21:30:58,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1715 treesize of output 1064 [2023-11-23 21:30:58,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:30:58,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:30:58,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 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 297 treesize of output 295 [2023-11-23 21:30:58,123 INFO L349 Elim1Store]: treesize reduction 115, result has 0.9 percent of original size [2023-11-23 21:30:58,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 416 treesize of output 405 [2023-11-23 21:30:58,140 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:30:58,144 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-23 21:30:58,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:30:58,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:30:58,169 INFO L349 Elim1Store]: treesize reduction 83, result has 1.2 percent of original size [2023-11-23 21:30:58,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1728 treesize of output 1077 [2023-11-23 21:30:58,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:30:58,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:30:58,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:30:58,227 INFO L349 Elim1Store]: treesize reduction 83, result has 1.2 percent of original size [2023-11-23 21:30:58,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1627 treesize of output 1041 [2023-11-23 21:30:58,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:30:58,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:30:58,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 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 297 treesize of output 295 [2023-11-23 21:30:58,282 INFO L349 Elim1Store]: treesize reduction 115, result has 0.9 percent of original size [2023-11-23 21:30:58,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 416 treesize of output 405 [2023-11-23 21:30:58,306 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:30:58,310 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-23 21:30:58,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:30:58,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:30:58,335 INFO L349 Elim1Store]: treesize reduction 83, result has 1.2 percent of original size [2023-11-23 21:30:58,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1640 treesize of output 1054 [2023-11-23 21:30:58,847 INFO L349 Elim1Store]: treesize reduction 4076, result has 0.0 percent of original size [2023-11-23 21:30:58,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 16 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 24 new quantified variables, introduced 81 case distinctions, treesize of input 18652 treesize of output 22139 [2023-11-23 21:31:04,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:31:07,240 WARN L177 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= |ULTIMATE.start_create_tree_~nodelast~0#1.base| (select v_DerPreprocessor_16 0)) [2023-11-23 21:31:08,969 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 781 treesize of output 692 [2023-11-23 21:31:09,133 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:31:09,136 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:31:09,181 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-11-23 21:31:09,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:31:09,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:31:09,361 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:31:09,361 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:31:09,542 INFO L349 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2023-11-23 21:31:09,542 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 2 case distinctions, treesize of input 2575 treesize of output 2519 [2023-11-23 21:31:16,941 WARN L293 SmtUtils]: Spent 7.35s on a formula simplification. DAG size of input: 75 DAG size of output: 60 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-23 21:31:16,941 INFO L349 Elim1Store]: treesize reduction 93, result has 56.5 percent of original size [2023-11-23 21:31:16,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 7918 treesize of output 4025 [2023-11-23 21:31:35,285 WARN L293 SmtUtils]: Spent 18.09s on a formula simplification. DAG size of input: 47 DAG size of output: 44 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-23 21:31:35,286 INFO L349 Elim1Store]: treesize reduction 15, result has 83.7 percent of original size [2023-11-23 21:31:35,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 13195 treesize of output 13119